id stringlengths 40 40 | instruction stringlengths 68 308 | input stringlengths 17 33.4k | output stringlengths 100 30k |
|---|---|---|---|
43a4b19c17d156786adf3515434e7d522664d75d | Analyze and fix the following issue in the Linux kernel code: dt-bindings: power: qcom,rpmhpd: Fix whitespace in RPMHPD defines | Problem Details:
Some RPMHPD_* defines in the Generic RPMH Power Domain Indexes section
were using spaces instead of tabs for alignment. Fix them to be
consistent with the rest of the file.
Signed-off-by: Shawn Guo <shengchao.guo@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Ulf Hansso... | ```diff
diff --git a/include/dt-bindings/power/qcom,rpmhpd.h b/include/dt-bindings/power/qcom,rpmhpd.h
index 67e2634fdc99..74e910150956 100644
--- a/include/dt-bindings/power/qcom,rpmhpd.h
+++ b/include/dt-bindings/power/qcom,rpmhpd.h
@@ -7,7 +7,7 @@
#define _DT_BINDINGS_POWER_QCOM_RPMHPD_H
/* Generic RPMH Power Do... |
26eb7c0a7ab09d83eec833db6a5a2bc60b9d4d9a | Analyze and fix the following issue in the Linux kernel code: drm/i915: Fix color blob reference handling in intel_plane_state | Problem Details:
Take proper references for hw color blobs (degamma_lut, gamma_lut,
ctm, lut_3d) in intel_plane_duplicate_state() and drop them in
intel_plane_destroy_state().
v2:
- handle blobs in hw state clear
Cc: <stable@vger.kernel.org> #v6.19+
Fixes: 3b7476e786c2 ("drm/i915/color: Add framework to program PRE/P... | ```diff
diff --git a/drivers/gpu/drm/i915/display/intel_plane.c b/drivers/gpu/drm/i915/display/intel_plane.c
index 82f445c83158..07eae4176dad 100644
--- a/drivers/gpu/drm/i915/display/intel_plane.c
+++ b/drivers/gpu/drm/i915/display/intel_plane.c
@@ -144,6 +144,15 @@ intel_plane_duplicate_state(struct drm_plane *plane)... |
8ee4e6dc8b960122b4c8504978d20774634b6633 | Analyze and fix the following issue in the Linux kernel code: clocksource/drivers/timer-ti-dm: Fix property name in comment | Problem Details:
ti,always-on property doesn't exist. ti,timer-alwon is meant here. Fix
this minor bug in the comment.
Signed-off-by: Markus Schneider-Pargmann (TI) <msp@baylibre.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Reviewed-by: Dhruva Gole <d-... | ```diff
diff --git a/drivers/clocksource/timer-ti-dm-systimer.c b/drivers/clocksource/timer-ti-dm-systimer.c
index eb0dfe4b9b7c..3804c1234522 100644
--- a/drivers/clocksource/timer-ti-dm-systimer.c
+++ b/drivers/clocksource/timer-ti-dm-systimer.c
@@ -226,7 +226,7 @@ static bool __init dmtimer_is_preferred(struct device... |
6951e870868d0b4bc385cbc851b871effa595330 | Analyze and fix the following issue in the Linux kernel code: dt-bindings: timer: arm,arch_timer: Fix requirements for interrupt description | Problem Details:
The arm,arch_timer DT binding is extremely imprecise in describing
the requirements for interrupts.
Follow the architecture by making it explicit that:
- the EL1 secure timer irq is required if EL3 is implemented
- the EL1 physical timer irq is always required
- the EL1 virtual timer irq is always req... | ```diff
diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
index c5fc3b6c8bd0..c65e48a155ab 100644
--- a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
+++ b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
@@ -1... |
e8694f7cc29287e843648d1075177b9a2000d957 | Analyze and fix the following issue in the Linux kernel code: wifi: fix leak if split 6 GHz scanning fails | Problem Details:
rdev->int_scan_req is leaked if cfg80211_scan() fails. Note that it's
supposed to be released at ___cfg80211_scan_done() but this doesn't happen
as rdev->scan_req is NULL at that point, too, leading to the early return
from the freeing function.
unreferenced object 0xffff8881161d0800 (size 512):
co... | ```diff
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 358cbc9e43d8..27a56ee2e8f0 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -1071,6 +1071,7 @@ int cfg80211_scan(struct cfg80211_registered_device *rdev)
struct cfg80211_scan_request_int *request;
struct cfg80211_scan_request_int *rde... |
10da12d352b7b2bb330a8609fdda9a58bf0e9856 | Analyze and fix the following issue in the Linux kernel code: configfs_lookup(): don't leave ->s_dentry dangling on failure | Problem Details:
Normally ->s_dentry is cleared when dentry it's pointing to becomes
negative (on eviction, realistically). However, that only happens
if dentry gets to be positive in the first place; in case of inode
allocation failure dentry never becomes positive, so ->d_iput()
is not called at all.
We do part of ... | ```diff
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 362b6ff9b908..e84483a0836d 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -486,6 +486,9 @@ static struct dentry * configfs_lookup(struct inode *dir,
inode = configfs_create(dentry, mode);
if (IS_ERR(inode)) {
+ spin_lock(&configfs_... |
995b736ad46a80af84e58596c5e23ce94035bddf | Analyze and fix the following issue in the Linux kernel code: thermal/core: Fix missing stub for devm_thermal_cooling_device_register | Problem Details:
Even it is very unlikely the thermal framework is disabled, the newly
added devm_thermal_cooling_device_register() function has not the stub
when the thermal framework is optout in the kernel.
Add it.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/2026053... | ```diff
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 81be6e6061b3..083b4f533933 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -344,7 +344,11 @@ static inline struct thermal_cooling_device *
thermal_cooling_device_register(const char *type, void *devdata,
const struct t... |
6d0c207c0a95bc4832fe0189973f64734ef5bfc0 | Analyze and fix the following issue in the Linux kernel code: dt-bindings: thermal: cooling-devices: Update support for 3 cells cooling device | Problem Details:
Extend the thermal cooling device binding to support a 3 cells specifier
along with the 2 cells format.
Update #cooling-cells property to enum to support both 2 and 3 arguments.
Fix pwm-fan.yaml to restrict the number of cells to 'const: 2'
Signed-off-by: Gaurav Kohli <gaurav.kohli@oss.qualcomm.com>... | ```diff
diff --git a/Documentation/devicetree/bindings/hwmon/pwm-fan.yaml b/Documentation/devicetree/bindings/hwmon/pwm-fan.yaml
index a84cc3a4cfdc..6a24851fd80d 100644
--- a/Documentation/devicetree/bindings/hwmon/pwm-fan.yaml
+++ b/Documentation/devicetree/bindings/hwmon/pwm-fan.yaml
@@ -63,7 +63,8 @@ properties:
... |
375a4a81968cc8bb56685c99bf1153bc70eb3b29 | Analyze and fix the following issue in the Linux kernel code: thermal/of: Fix trailing whitespace and repeated word | Problem Details:
Correct a trailing whitespace error on line 101 and remove a
duplicated "which" in the kernel-doc comment for thermal_of_zone_register.
Signed-off-by: Mayur Kumar <kmayur809@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Link: https://patch.msgid.link/20260511161854.193573-1-kmay... | ```diff
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index 99085c806a1f..75fb7663c507 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -98,7 +98,7 @@ static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *n
int ret, count;
*ntrips ... |
4bb840492cedf89d5bed72ede6e0f8e848141977 | Analyze and fix the following issue in the Linux kernel code: thermal/drivers/qcom: Fix typo in comment | Problem Details:
Fix a typo in the struct tsens_irq_data comment.
Replace "uppper" with "upper".
Signed-off-by: Jinseok Kim <always.starving0@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Acked-by: Amit Kucheria <amitk@kernel.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>... | ```diff
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index a2422ebee816..5e19c7588e03 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -27,7 +27,7 @@
* @up_viol: upper threshold violated
* @up_thresh: upper threshold temperature value
* @up_ir... |
18d65de8157c93666b2d42f1d46330ee4cb030b7 | Analyze and fix the following issue in the Linux kernel code: thermal/drivers/amlogic: Add support for secure monitor calibration readout | Problem Details:
Some SoCs (e.g. T7) expose thermal calibration data through the secure
monitor rather than a directly accessible eFuse register. Add a use_sm
flag to amlogic_thermal_data to select this path, and retrieve the
firmware handle and tsensor_id from the "amlogic,secure-monitor" DT
phandle with one fixed arg... | ```diff
diff --git a/drivers/thermal/amlogic_thermal.c b/drivers/thermal/amlogic_thermal.c
index 5448d772db12..a0b530624b60 100644
--- a/drivers/thermal/amlogic_thermal.c
+++ b/drivers/thermal/amlogic_thermal.c
@@ -25,6 +25,7 @@
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/thermal.h>
... |
5f1e4f65d3002a814c690434f1dd37facc1df6ca | Analyze and fix the following issue in the Linux kernel code: thermal/drivers/amlogic: Add missing dependency on MESON_SM | Problem Details:
The amlogic thermal driver calls meson_sm_get() and
meson_sm_get_thermal_calib() which are exported by the meson_sm
driver. Without CONFIG_MESON_SM enabled, the build fails with
undefined references to these symbols.
Add a proper Kconfig dependency on MESON_SM instead of relying on
stub functions, whi... | ```diff
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index b10080d61860..40a376cf9936 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -436,6 +436,7 @@ config AMLOGIC_THERMAL
tristate "Amlogic Thermal Support"
default ARCH_MESON
depends on OF && ARCH_MESON
+ depends on MESON... |
560000d619ef162568746ce287f0c725e24ea967 | Analyze and fix the following issue in the Linux kernel code: dma-mapping: direct: fix missing mapping for THRU_HOST_BRIDGE segments | Problem Details:
In dma_direct_map_sg(), the case PCI_P2PDMA_MAP_THRU_HOST_BRIDGE
incorrectly used 'break' instead of falling through to MAP_NONE.
As a result, segments traversing the host bridge skipped the required
dma_direct_map_phys() call entirely, leaving sg->dma_address
uninitialized and leading to DMA failures.... | ```diff
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 583c5922bca2..4391b797d4db 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -476,7 +476,7 @@ int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl, int nents,
* must be mapped with CPU physical address and not PCI
* ... |
5e50d4b8ae3ea622122d3c6a38d7f6fe68dfddca | Analyze and fix the following issue in the Linux kernel code: batman-adv: prevent ELP transmission interval underflow | Problem Details:
batadv_v_elp_start_timer() enqeues a delayed work. The time when it starts
is randomly chosen between (elp_interval - BATADV_JITTER) and
(elp_interval + BATADV_JITTER). The configured elp_interval must therefore
be larger or equal to BATADV_JITTER to avoid that it causes an underflow of
the unsigned in... | ```diff
diff --git a/net/batman-adv/netlink.c b/net/batman-adv/netlink.c
index e5463003a3bd..1ba206e40273 100644
--- a/net/batman-adv/netlink.c
+++ b/net/batman-adv/netlink.c
@@ -919,9 +919,15 @@ static int batadv_netlink_set_hardif(struct sk_buff *skb,
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
if (info->attrs[BATADV_ATTR... |
98b0fb191c878a64cbaebfe231d96d57576acf8c | Analyze and fix the following issue in the Linux kernel code: batman-adv: bla: annotate lasttime access with READ/WRITE_ONCE | Problem Details:
The lasttime field for claim, backbone_gw, and loopdetect tracks the
jiffies value of the most recent activity and is used to detect timeouts.
These accesses are not consistently protected by a lock, so
READ_ONCE/WRITE_ONCE must be used to prevent data races caused by compiler
optimizations.
Cc: stabl... | ```diff
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 87d6b11161e4..0461f11227d0 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -513,7 +513,7 @@ batadv_bla_get_backbone_gw(struct batadv_priv *bat_priv, const u8 *or... |
15ccbf685222274f5add1387af58c2a41a95f81e | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: add only finished tp_vars to lists | Problem Details:
When the receiver variables (aka "session") are initialized, then they are
added to the list of sessions before the timer is set up. A RCU protected
reader could therefore find the entry and run mod_setup before
batadv_tp_init_recv() finished the timer initialization.
The same is true for batadv_tp_st... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 3d3d06c88e1c..5498cdc972e9 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1096,21 +1096,21 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst,
tp_vars->prerandom_offset = 0;
spin_lock_init(&... |
f54c85ed42a1b27a516cf2a4728f5a612b799e07 | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: handle seqno wrap-around for fast recovery detection | Problem Details:
The recover variable and the last_sent sequence number are initialized on
purpose as a really high value which will wrap-around after the first 2000
bytes. The fast recovery precondition must therefore not use simple integer
comparisons but use helpers which are aware of the sequence number
wrap-around... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index ae6acbc60c8e..3d3d06c88e1c 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -733,7 +733,7 @@ static void batadv_tp_recv_ack(struct batadv_priv *bat_priv,
if (atomic_read(&tp_vars->dup_acks) != 3)
goto out;
... |
2b0d08f08ed3b2174f05c43089ec65f3543a025b | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: fix fast recovery precondition | Problem Details:
The fast recovery precondition checks if the recover (initialized to
BATADV_TP_FIRST_SEQ) is bigger than the received ack. But since recover is
only updated when this check is successful, it will never enter the fast
recovery mode.
According to RFC6582 Section 3.2 step 2, the check should actually be
... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 1655f181c929..ae6acbc60c8e 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -733,7 +733,7 @@ static void batadv_tp_recv_ack(struct batadv_priv *bat_priv,
if (atomic_read(&tp_vars->dup_acks) != 3)
goto out;
... |
33ccd52f3cc9ed46ce395199f89aa3234dc83314 | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: avoid divide-by-zero for dec_cwnd | Problem Details:
The cwnd is always MSS <= cwnd <= 0x20000000. But the calculation in
batadv_tp_update_cwnd() assumes unsigned 32 bit arithmetics.
((mss * 8) ** 2) / (cwnd * 8)
In case cwnd is actually 0x20000000, it will be shifted by 3 bit to the
left end up at 0x100000000 or U32_MAX + 1. It will therefore wrap... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 9ecbc6023cfc..1655f181c929 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -154,9 +154,12 @@ static void batadv_tp_update_cwnd(struct batadv_tp_vars *tp_vars, u32 mss)
return;
}
+ /* prevent overflow in (ms... |
765947b81fb54b6ebb0bc1cfe55c0fa399e002b8 | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: avoid window underflow | Problem Details:
In batadv_tp_avail(), win_left is calculated with 32-bit unsigned
arithmetic: win_left = win_limit - tp_vars->last_sent;
During Fast Recovery, cwnd is inflated and last_sent advances rapidly. When
Fast Recovery ends, cwnd drops abruptly back to ss_threshold. If the newly
shrunk win_limit is less than ... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index beabc264a4f1..9ecbc6023cfc 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -817,10 +817,15 @@ out:
static bool batadv_tp_avail(struct batadv_tp_vars *tp_vars,
size_t payload_len)
{
+ u32 last_sent = READ... |
febfb1b86224489535312296ecfa3d4bf467f339 | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: initialize dec_cwnd explicitly | Problem Details:
When batadv_tp_update_cwnd() is called, dec_cwnd is increased. But dec_cwnd
is only initialixed (to 0) when a duplicate Ack was received or when cwnd
is below the ss_threshold.
Just initialize the cwnd during the initialization to avoid any potential
access of uninitialized data.
Cc: stable@kernel.or... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 8d7308327a9b..beabc264a4f1 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1055,6 +1055,8 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst,
* mesh_interface, hence its MTU
*/
tp_vars->c... |
b2b68b32a715e0328662801576974aa37b942b00 | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: initialize dup_acks explicitly | Problem Details:
When an ack with a sequence number equal to the last_acked is received, the
dup_acks counter is increased to decide whether fast retransmit should be
performed. Only when the sequence numbers are not equal, the dup_acks is
set to the initial value (0).
But if the initial packet would have the sequence... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 0e39ea33e5f2..8d7308327a9b 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1045,6 +1045,7 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const u8 *dst,
tp_vars->icmp_uid = icmp_uid;
tp_vars->last_sen... |
5aa8651527ea0b610e7a09fb3b8204c1398b9525 | Analyze and fix the following issue in the Linux kernel code: batman-adv: tp_meter: keep unacked list in ascending ordered | Problem Details:
When batadv_tp_handle_out_of_order inserts a new entry in the list of
unacked (out of order) packets, it searches from the entry with the newest
sequence number towards oldest sequence number. If an entry is found which
is older than the newly entry, the new entry has to be added after the
found one to... | ```diff
diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index aefe757277b2..0e39ea33e5f2 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1325,7 +1325,7 @@ static bool batadv_tp_handle_out_of_order(struct batadv_tp_vars *tp_vars,
* one is attached _after_ it. In this way... |
f723ccaff2fb72b71ae8a9fd283f0dee4d9ae7a3 | Analyze and fix the following issue in the Linux kernel code: ipv6: anycast: insert aca into global hash under idev->lock | Problem Details:
syzbot reported a splat [1]: a slab-use-after-free in
ipv6_chk_acast_addr(), which walks the global inet6_acaddr_lst[] hash
under RCU and dereferences a struct ifacaddr6 that has already been
freed while still linked in the hash, so a later reader walks into a
dangling node.
In __ipv6_dev_ac_inc() the... | ```diff
diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index 67a42e01dfc3..be6dac8a8566 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -243,16 +243,16 @@ static void ipv6_add_acaddr_hash(struct net *net, struct ifacaddr6 *aca)
{
unsigned int hash = inet6_acaddr_hash(net, &aca->aca_addr);
- spin_... |
dfcc2ff12925d99e858eaf539eaa4aaaf81fe2a6 | Analyze and fix the following issue in the Linux kernel code: selftests/net: bind_bhash: fix memory leak in bind_socket | Problem Details:
The getaddrinfo() call in bind_socket() dynamically allocates memory
for the result linked list that must be freed with freeaddrinfo().
However, none of the code paths after a successful getaddrinfo() call
free this memory, causing a leak in every invocation of bind_socket().
Signed-off-by: longlong y... | ```diff
diff --git a/tools/testing/selftests/net/bind_bhash.c b/tools/testing/selftests/net/bind_bhash.c
index da04b0b19b73..2bd100777448 100644
--- a/tools/testing/selftests/net/bind_bhash.c
+++ b/tools/testing/selftests/net/bind_bhash.c
@@ -52,18 +52,19 @@ static int bind_socket(int opt, const char *addr)
err = se... |
e23d7c8c1d4ba435c457d7ffb2669175ec819b07 | Analyze and fix the following issue in the Linux kernel code: dpaa2-switch: fix handling of NAPI on the remove path | Problem Details:
All the NAPI instances for a DPSW device are attached to the first
switch port's net_device but shared by all ports. The NAPI instances get
disabled only once the last port goes down.
This causes an issue on the .remove() path where each port is
unregistered and freed one at a time, causing the NAPI i... | ```diff
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 505ccaa93ee4..a0bf5b50aae5 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -3304,7 +3304,6 @@ static void dpa... |
9111f02861175854bcbd1d7ca4fff9d2b48bac62 | Analyze and fix the following issue in the Linux kernel code: dpaa2-switch: support VLAN flag changes on existing VIDs | Problem Details:
The switchdev core notifies the driver on VLAN flag changes on existing
VIDs through the changed field of the switchdev_obj_port_vlan structure.
Without this patch, the driver was erroring out from the start if the
same VID was inserted twice, from its perspective, even though the
second call was actua... | ```diff
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 4022635171b5..505ccaa93ee4 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -298,49 +298,68 @@ set_tci_error:
... |
74c1c9f5c0c30bbd0c2cf87b6e3507e7ea46c13d | Analyze and fix the following issue in the Linux kernel code: dpaa2-switch: fix the error path in dpaa2_switch_rx() | Problem Details:
In case of an error in dpaa2_switch_rx(), the dpaa2_switch_free_fd()
function is called in order to free the FD. This is incorrect since the
dpaa2_switch_free_fd() is intended to be used on Tx frame descriptors,
meaning that it expects in the software annotation area of the FD data
to find a valid skb ... | ```diff
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 782fef26b78e..53a32b21b959 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -2429,18 +2429,13 @@ static int dp... |
efc1d92eacf03afa6f4d53bf7120e059b6f961f2 | Analyze and fix the following issue in the Linux kernel code: dpaa2-switch: rework FDB management on the bridge leave path | Problem Details:
On bridge leave, the dpaa2_switch_port_set_fdb() function always
allocates a new FDB for the port which is becoming standalone. In case
no FDB is found, then the port leaving a bridge will continue to use the
current one.
The above logic does not cover the case in which there are multiple
bridges whic... | ```diff
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
index 52c1cb9cb7e0..782fef26b78e 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -54,27 +54,44 @@ dpaa2_switch_filt... |
a7e658907686528fe06a11828b04a3e42df9ef18 | Analyze and fix the following issue in the Linux kernel code: riscv: dts: sophgo: sg2042: use hex for CPU unit address | Problem Details:
Previous the CPU unit address cpu of sg2042 use decimal, it is
not following the general convention for unit addresses of the
OF. Convent the unit address to hex to resolve this problem.
The introduces a small change for the CPU node name, but it should
affect nothing since there is no direct full-pat... | ```diff
diff --git a/arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi b/arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi
index 509488eee432..fd8906b313d2 100644
--- a/arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi
+++ b/arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi
@@ -263,7 +263,7 @@
"zifencei", "zihpm", "zfh",
... |
207cbc477406a72952e27ace2eadbae55164f129 | Analyze and fix the following issue in the Linux kernel code: riscv: dts: sophgo: sg2044: use hex for CPU unit address | Problem Details:
Previous the CPU unit address cpu of sg2044 use decimal, it is
not following the general convention for unit addresses of the
OF. Convent the unit address to hex to resolve this problem.
The introduces a small change for the CPU node name, but it should
nothing since there is no direct full-path refer... | ```diff
diff --git a/arch/riscv/boot/dts/sophgo/sg2044-cpus.dtsi b/arch/riscv/boot/dts/sophgo/sg2044-cpus.dtsi
index 3135409c2149..f66a382c95bd 100644
--- a/arch/riscv/boot/dts/sophgo/sg2044-cpus.dtsi
+++ b/arch/riscv/boot/dts/sophgo/sg2044-cpus.dtsi
@@ -14,7 +14,7 @@
cpu0: cpu@0 {
compatible = "thead,c920", "... |
a48bd961fb203a7ce68f8110fc53a85f90e24b33 | Analyze and fix the following issue in the Linux kernel code: kbuild: Remove unnecessary 'T' modifier in cmd_ar_builtin_fixup | Problem Details:
In cmd_ar_builtin_fixup, the 'T' modifier was added to '$(AR) mPi' to
work around a bug in llvm-ar that caused thin archives to be silently
converted to full archives [1]. Since commit 20c098928356 ("kbuild: Bump
minimum version of LLVM for building the kernel to 15.0.0"), all
supported versions of llv... | ```diff
diff --git a/scripts/Makefile.vmlinux_a b/scripts/Makefile.vmlinux_a
index bd141b893748..395e29998d7d 100644
--- a/scripts/Makefile.vmlinux_a
+++ b/scripts/Makefile.vmlinux_a
@@ -10,12 +10,11 @@ include $(srctree)/scripts/Makefile.lib
# Link of built-in-fixup.a
# ----------------------------------------------... |
3f1eccd37282de91efd0575ee8e212af4bde39b1 | Analyze and fix the following issue in the Linux kernel code: n64cart: use strscpy in n64cart_probe | Problem Details:
strcpy() has been deprecated [1] because it performs no bounds checking
on the destination buffer, which can lead to buffer overflows. While the
current code works correctly, replace strcpy() with the safer strscpy()
to follow secure coding best practices.
[1] https://www.kernel.org/doc/html/latest/pr... | ```diff
diff --git a/drivers/block/n64cart.c b/drivers/block/n64cart.c
index b9fdeff31caf..328da73b6f2c 100644
--- a/drivers/block/n64cart.c
+++ b/drivers/block/n64cart.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/string.h>
enum {
PI_D... |
12e4d4bb6e5a4845f0c22e5d8820fdc6244653a4 | Analyze and fix the following issue in the Linux kernel code: Docs/{ABI,admin-guide}/damon: fix various typoes | Problem Details:
``damon_target_idx`` was wrongly written as ``target_idx`` in the docs.
Fix it all over the place, as well as the wrong directory count, grammar,
etc.
Link: https://lore.kernel.org/20260520012104.93602-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Zenghui Yu <zenghui.yu@... | ```diff
diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-damon b/Documentation/ABI/testing/sysfs-kernel-mm-damon
index ee29d4e204ff..b73e6bc28ea5 100644
--- a/Documentation/ABI/testing/sysfs-kernel-mm-damon
+++ b/Documentation/ABI/testing/sysfs-kernel-mm-damon
@@ -452,7 +452,7 @@ Description: If 'hugepage_size' i... |
de5480aeffc59d0792855c59c98624038ce67b67 | Analyze and fix the following issue in the Linux kernel code: Docs/mm/damon/design: fix three typos | Problem Details:
L140: "unsinged" -> "unsigned"
L371: "sampleing" -> "sampling"
L387: "multipled" -> "multiplied"
Link: https://lore.kernel.org/20260520012104.93602-3-sj@kernel.org
Signed-off-by: Sakurai Shun <ssh1326@icloud.com>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Lorenzo Stoakes <ljs@kernel.org... | ```diff
diff --git a/Documentation/mm/damon/design.rst b/Documentation/mm/damon/design.rst
index a24f9f00d183..2da7ca0d3d17 100644
--- a/Documentation/mm/damon/design.rst
+++ b/Documentation/mm/damon/design.rst
@@ -147,7 +147,7 @@ as Idle page tracking does.
Address Unit
------------
-DAMON core layer uses ``unsing... |
e186709b0a2d5a05c3cb38e46d13b399f5f5d3f9 | Analyze and fix the following issue in the Linux kernel code: mm/damon/core: clarify next_intervals_tune_sis update path | Problem Details:
Patch series "mm/damon: documentation and comment fixes".
This patch (of 3):
damon_set_attrs() updates next_aggregation_sis and next_ops_update_sis for
online attrs updates, but it does not update next_intervals_tune_sis
there.
This can look like a missing update when reading damon_set_attrs() alon... | ```diff
diff --git a/mm/damon/core.c b/mm/damon/core.c
index 4e223857a0f9..68b3b4bbc8fc 100644
--- a/mm/damon/core.c
+++ b/mm/damon/core.c
@@ -909,6 +909,9 @@ int damon_set_attrs(struct damon_ctx *ctx, struct damon_attrs *attrs)
attrs->aggr_interval / sample_interval;
ctx->next_ops_update_sis = ctx->passed_sample_... |
c33afe6f972d7bfada751c9ee83d9875ea38d6dc | Analyze and fix the following issue in the Linux kernel code: Documentation/admin-guide/mm: fix typos in transhuge.rst | Problem Details:
Fix these two typos:
1. approporiately -> appropriately
2. presure -> pressure
Link: https://lore.kernel.org/20260520051751.74396-1-leon.hwang@linux.dev
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@k... | ```diff
diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst
index 5fbc3d89bb07..76f4eb14e262 100644
--- a/Documentation/admin-guide/mm/transhuge.rst
+++ b/Documentation/admin-guide/mm/transhuge.rst
@@ -57,7 +57,7 @@ prominent because the size of each page isn't as huge a... |
a10848d98ec9c5372a979d7aa91a8b8fe50fd8f8 | Analyze and fix the following issue in the Linux kernel code: mm/memory-failure: use zone_pcp_disable() for poison handling | Problem Details:
__page_handle_poison() used drain_all_pages() instead of
zone_pcp_disable() because dissolve_free_hugetlb_folio() could restore HVO
vmemmap pages and decrement hugetlb_optimize_vmemmap_key. That static key
update took cpu_hotplug_lock through static_key_slow_dec(), while
zone_pcp_disable() holds pcp_b... | ```diff
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 1b8d0bade04a..51508a55c405 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -172,23 +172,11 @@ static int __page_handle_poison(struct page *page)
{
int ret;
- /*
- * zone_pcp_disable() can't be used here. It will
- * hold pcp_batch... |
a2b8d7827f48ee54a686cb80e4a1d0ff954ec42a | Analyze and fix the following issue in the Linux kernel code: drivers/base/memory: set mem->altmap after successful device registration | Problem Details:
If __add_memory_block() fails at xa_store() (under memory pressure for
example), device_unregister() is called, which eventually triggers
memory_block_release() with mem->altmap still set, causing a
WARN_ON(mem->altmap). This was triggered by modifying virtio-mem driver.
Fix this by delaying the assi... | ```diff
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index d31a421f7483..b318344426fa 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -797,7 +797,6 @@ static int add_memory_block(unsigned long block_id, int nid, unsigned long state
mem->start_section_nr = block_id * sections_per_block;... |
6fa411adff39e4955f11aa3e854a876680444d2a | Analyze and fix the following issue in the Linux kernel code: lib/test_hmm: fix error path in dmirror_devmem_fault() | Problem Details:
Handle migrate_vma_setup() failure via goto err for unified cleanup.
Link: https://lore.kernel.org/20260515070312.130435-1-liuqiangneo@163.com
Signed-off-by: Qiang Liu <liuqiang@kylinos.cn>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@k... | ```diff
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 38996c4baa40..63bf77dee987 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -1679,8 +1679,14 @@ static vm_fault_t dmirror_devmem_fault(struct vm_fault *vmf)
if (order)
args.flags |= MIGRATE_VMA_SELECT_COMPOUND;
- if (migrate_vma_setup(&args))
- retur... |
0c946c54a7013742157b8f79b241140b0c670764 | Analyze and fix the following issue in the Linux kernel code: docs/mm: fix typo in process_addrs.rst | Problem Details:
Replace "presense" with "presence"
Link: https://lore.kernel.org/20260517103640.45444-1-ssh1326@icloud.com
Signed-off-by: Sakurai Shun <ssh1326@icloud.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org> | ```diff
diff --git a/Documentation/mm/process_addrs.rst b/Documentation/mm/process_addrs.rst
index 851680ead45f..042d64d72421 100644
--- a/Documentation/mm/process_addrs.rst
+++ b/Documentation/mm/process_addrs.rst
@@ -775,7 +775,7 @@ lock, releasing or downgrading the mmap write lock also releases the VMA write
lock ... |
d9ceded101a142cd56f1e88fc7e893560ee59f4d | Analyze and fix the following issue in the Linux kernel code: mm, swap: merge zeromap into swap table | Problem Details:
By allocating one additional bit in the swap table entry's flags field
alongside the count, we can store the zeromap inline
For 64 bit systems, zeromap will store in the swap table, avoiding zeromap
allocation. It reduces the allocated memory. That is the happy path.
For certain 32-bit archs, there... | ```diff
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 200e7c345f26..8c43bc3055c9 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -252,7 +252,6 @@ struct swap_info_struct {
struct plist_node list; /* entry in swap_active_head */
signed char type; /* strange name for an index */
u... |
b197d41462c2076bc88c79fead7f400e48881c19 | Analyze and fix the following issue in the Linux kernel code: mm/memcg, swap: store cgroup id in cluster table directly | Problem Details:
Drop the usage of the swap_cgroup_ctrl, and use the dynamic cluster table
instead.
The per-cluster memcg table is 1024 / 512 bytes on most archs, and does
not need RCU protection: the cgroup data is only read and written under
the cluster lock. That keeps things simple, lets the allocation use plain
... | ```diff
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index a013f37f24aa..8f2662db166b 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -29,6 +29,7 @@ struct obj_cgroup;
struct page;
struct mm_struct;
struct kmem_cache;
+struct swap_cluster_info;
/* Cgroup-specifi... |
63b02a9409cb5180398491b093e48bcb5315f5fb | Analyze and fix the following issue in the Linux kernel code: mm: swap_cgroup: fix NULL deref in lookup_swap_cgroup_id on swapless host | Problem Details:
lookup_swap_cgroup_id() passes swap_cgroup_ctrl[type].map to
__swap_cgroup_id_lookup() without checking that the type was ever
registered via swap_cgroup_swapon(). On a swapless host every ctrl->map
is NULL, so __swap_cgroup_id_lookup() dereferences NULL + a scaled
swp_offset().
Since commit bea67dcc... | ```diff
diff --git a/mm/swap_cgroup.c b/mm/swap_cgroup.c
index de779fed8c21..95c38e54dd58 100644
--- a/mm/swap_cgroup.c
+++ b/mm/swap_cgroup.c
@@ -124,6 +124,8 @@ unsigned short lookup_swap_cgroup_id(swp_entry_t ent)
return 0;
ctrl = &swap_cgroup_ctrl[swp_type(ent)];
+ if (unlikely(!ctrl->map))
+ return 0;
re... |
3687c0fd67249cb971990b382a47f02f19ed9f67 | Analyze and fix the following issue in the Linux kernel code: mm: rejig pageblock mask definitions | Problem Details:
- Add a PAGEBLOCK_ prefix to the names to avoid polluting the "global
namespace" too much.
- This new prefix makes MIGRATETYPE_AND_ISO_MASK look pretty long. Well,
that global mask only exists for quite a specific purpose, and is
quite a weird thing to have a name for anyway. So drop it and take... | ```diff
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h
index e046278a01fa..9a6c3ea17684 100644
--- a/include/linux/pageblock-flags.h
+++ b/include/linux/pageblock-flags.h
@@ -36,12 +36,12 @@ enum pageblock_bits {
#define NR_PAGEBLOCK_BITS (roundup_pow_of_two(__NR_PAGEBLOCK_BITS))
-#... |
88e09fffeef5825931e6374b9e88d4b1a1d5f6f8 | Analyze and fix the following issue in the Linux kernel code: mm/filemap: fix page_cache_prev_miss() when no hole is found | Problem Details:
page_cache_prev_miss() is documented to return a value outside the
searched range when no gap is found. However, the no-gap-found path
returns xas.xa_index, which after a successful loop is the first index in
the range. As such, that index is misreported as a gap.
The sole caller, page_cache_sync_ra... | ```diff
diff --git a/mm/filemap.c b/mm/filemap.c
index ab34cab2416a..4263d9775998 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1808,9 +1808,8 @@ pgoff_t page_cache_next_miss(struct address_space *mapping,
pgoff_t index, unsigned long max_scan)
{
XA_STATE(xas, &mapping->i_pages, index);
- unsigned long n... |
3fb355431eb864a95be3b832605d0575f43d6971 | Analyze and fix the following issue in the Linux kernel code: tools/mm/page-types: fix kpageflags option argument in getopt_long | Problem Details:
The --kpageflags option requires an argument to specify the kpageflags
file path, but has_arg was set to 0 (no_argument) in the long options
table. Change it to 1 (required_argument) so getopt_long correctly parses
the argument.
Link: https://lore.kernel.org/20260513022120.58033-4-ye.liu@linux.dev
Si... | ```diff
diff --git a/tools/mm/page-types.c b/tools/mm/page-types.c
index 66f429f2b698..7fc5a8be5997 100644
--- a/tools/mm/page-types.c
+++ b/tools/mm/page-types.c
@@ -1261,7 +1261,7 @@ static const struct option opts[] = {
{ "no-summary", 0, NULL, 'N' },
{ "hwpoison" , 0, NULL, 'X' },
{ "unpoison" , 0, NULL, 'x... |
e696ff06db374c1adb877d20e56085abe1d109a3 | Analyze and fix the following issue in the Linux kernel code: tools/mm/page-types: fix ternary operator precedence in sigbus handler | Problem Details:
The ternary operator (?:) has lower precedence than addition (+), so the
expression `off + sigbus_addr ? sigbus_addr - ptr : 0` was parsed as
`(off + sigbus_addr) ? (sigbus_addr - ptr) : 0` rather than the intended
`off + (sigbus_addr ? sigbus_addr - ptr : 0)`. Add explicit parentheses
to ensure th... | ```diff
diff --git a/tools/mm/page-types.c b/tools/mm/page-types.c
index 6594245217a8..66f429f2b698 100644
--- a/tools/mm/page-types.c
+++ b/tools/mm/page-types.c
@@ -1000,7 +1000,7 @@ static void walk_file_range(const char *name, int fd,
fatal("madvise failed: %s", name);
if (sigsetjmp(sigbus_jmp, 1)) {
- e... |
96f9fb92126a4fb5b24a54964eaef8f82cc2ab7f | Analyze and fix the following issue in the Linux kernel code: tools/mm/page-types: fix typo in madvise() error message | Problem Details:
Patch series "tools/mm/page-types: Fix misc bugs".
This series fixes three issues in tools/mm/page-types.c:
1. Fix two typos in madvise() error messages ("madvice" -> "madvise")
2. Fix operator precedence bug in the sigbus handler where the ternary
operator binds looser than addition, producing in... | ```diff
diff --git a/tools/mm/page-types.c b/tools/mm/page-types.c
index d7e5e8902af8..6594245217a8 100644
--- a/tools/mm/page-types.c
+++ b/tools/mm/page-types.c
@@ -997,7 +997,7 @@ static void walk_file_range(const char *name, int fd,
/* turn off readahead */
if (madvise(ptr, len, MADV_RANDOM))
- fatal("mad... |
0496a59745b0723ea74274db16fd5c8b1379b9a9 | Analyze and fix the following issue in the Linux kernel code: userfaultfd: ensure mremap_userfaultfd_fail() releases mmap_changing | Problem Details:
Sashiko says:
mremap_userfaultfd_prep() increments ctx->mmap_changing to stall
concurrent operations, but mremap_userfaultfd_fail() does not
decrement it before dropping the context reference.
If an mremap operation fails, ctx->mmap_changing remains elevated. This
will causes subsequent userfau... | ```diff
diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 4b53dc4a3266..390e4b7d9cb9 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -786,6 +786,8 @@ void mremap_userfaultfd_fail(struct vm_userfaultfd_ctx *vm_ctx)
if (!ctx)
return;
+ atomic_dec(&ctx->mmap_changing);
+ VM_WARN_ON_ONCE(atomic_read(&ct... |
59f19bf6f119eecfa16355186b593abba8eb5198 | Analyze and fix the following issue in the Linux kernel code: lib/test_hmm: use kvfree() to free kvcalloc() allocations | Problem Details:
Coccinelle scripts/coccinelle/api/kfree_mismatch.cocci reports
the following warnings:
lib/test_hmm.c:1256:15-16: WARNING kvmalloc is used to allocate this memory at line 1191
lib/test_hmm.c:1257:15-16: WARNING kvmalloc is used to allocate this memory at line 1196
Fix this by replacing kfree() wi... | ```diff
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index 213504915737..38996c4baa40 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -1253,8 +1253,8 @@ out:
mmap_read_unlock(mm);
mmput(mm);
free_mem:
- kfree(src_pfns);
- kfree(dst_pfns);
+ kvfree(src_pfns);
+ kvfree(dst_pfns);
return ret;
}
``` |
395085eacdfa37a64b37ae16a6dc467fb8670faf | Analyze and fix the following issue in the Linux kernel code: mm, swap: avoid leaving unused extend table after alloc race | Problem Details:
Allocating an extend table requires dropping the ci lock first. While the
lock is dropped, a concurrent put can decrease the slot's swap count to a
value that is no longer maxed out, so the extend table is no longer
required. The current allocation path still attach the new extend table
to the cluste... | ```diff
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 74a1e324449d..ee515a6fbccd 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1443,8 +1443,10 @@ start_over:
}
static int swap_extend_table_alloc(struct swap_info_struct *si,
- struct swap_cluster_info *ci, gfp_t gfp)
+ struct swap_cluster_info *c... |
80eacd489a50ab2a560bc233b26b94ad9df68410 | Analyze and fix the following issue in the Linux kernel code: mm/mmu_notifier: fix a begin vs. start typo in the invalidate range comment | Problem Details:
Fix a goof in the block comment for invalidate_range_{start,end}() where
start() is incorrectly referred to as begin().
No functional change intended.
[seanjc@google.com: split to separate patch, write changelog]
Link: https://lore.kernel.org/20260513163546.1176742-1-seanjc@google.com
Signed-off-by: ... | ```diff
diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index 69c304b467df..a11a44eef521 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -134,8 +134,8 @@ struct mmu_notifier_ops {
* Invalidation of multiple concurrent ranges may be
* optionally permitted by... |
13f263b60fee0c463f3a9a6c728cd010d8802d69 | Analyze and fix the following issue in the Linux kernel code: selftests/mm: ksm-functional-tests: fix partial write handling | Problem Details:
Update write() checks to properly detect and handle partial writes.
Previously, the write() calls used <= 0 to detect failure. This condition
is never true for partial writes (ret > 0 but ret < len), so partial
writes were silently treated as success.
Fix this by verifying that write() returns the f... | ```diff
diff --git a/tools/testing/selftests/mm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c
index 8d874c4754f3..31c06c72203f 100644
--- a/tools/testing/selftests/mm/ksm_functional_tests.c
+++ b/tools/testing/selftests/mm/ksm_functional_tests.c
@@ -498,6 +498,7 @@ static void test_prctl_fo... |
8e0c2085c978ed6d9764d79fc785920360096f21 | Analyze and fix the following issue in the Linux kernel code: lib/test_meminit: use && for bools | Problem Details:
As pointed out by Dan Carpenter, test_kmemcache() was using a bitwise AND
on two bools instead of a boolean AND. Fix this for the sake of code
cleanliness.
Link: https://lore.kernel.org/20260504100637.1535762-1-glider@google.com
Fixes: 5015a300a522 ("lib: introduce test_meminit module")
Signed-off-by... | ```diff
diff --git a/lib/test_meminit.c b/lib/test_meminit.c
index 6298f66c964b..d028a6552cd6 100644
--- a/lib/test_meminit.c
+++ b/lib/test_meminit.c
@@ -387,7 +387,7 @@ static int __init test_kmemcache(int *total_failures)
ctor = flags & 1;
rcu = flags & 2;
zero = flags & 4;
- if (ctor & zero)
+ if (c... |
62b21c6f1d88c66a200c2c54b704e503e2e5a60f | Analyze and fix the following issue in the Linux kernel code: mm/shrinker: avoid out-of-bounds read in set_shrinker_bit() | Problem Details:
set_shrinker_bit() reads info->unit[shrinker_id_to_index(shrinker_id)]
before checking shrinker_id against info->map_nr_max, so an id past the
currently visible map_nr_max reads past the unit[] array before the
WARN_ON_ONCE() catches it.
Determined from code inspection.
Move the load into the bounded... | ```diff
diff --git a/mm/shrinker.c b/mm/shrinker.c
index 76b3f750cf65..49256f81199f 100644
--- a/mm/shrinker.c
+++ b/mm/shrinker.c
@@ -197,12 +197,13 @@ void set_shrinker_bit(struct mem_cgroup *memcg, int nid, int shrinker_id)
{
if (shrinker_id >= 0 && memcg && !mem_cgroup_is_root(memcg)) {
struct shrinker_info *... |
a9920428f19481d1227992ecbf1c73efd5b93001 | Analyze and fix the following issue in the Linux kernel code: mm/khugepaged: fix inconsistent MMF_VM_HUGEPAGE flag due to allocation failure order | Problem Details:
__khugepaged_enter() sets MMF_VM_HUGEPAGE before allocating the
corresponding mm_slot. If mm_slot_alloc() fails, the function returns
with the flag set but without inserting the mm into the khugepaged
tracking structures, leaving the mm in an inconsistent state where future
registration attempts are s... | ```diff
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 28a843f30b32..a4b97ec8ce56 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -437,13 +437,16 @@ void __khugepaged_enter(struct mm_struct *mm)
/* __khugepaged_exit() must not run from under us */
VM_BUG_ON_MM(collapse_test_exit(mm), mm);
- if (unlike... |
da7bfa6a39fd4d72e03b6bc5f01148ac22fd216e | Analyze and fix the following issue in the Linux kernel code: mm/damon/lru_sort: validate min_region_size to be power of 2 | Problem Details:
Patch series "mm/damon: validate min_region_size to be power of 2", v5.
Problem
=======
When a user sets an invalid 'addr_unit' (e.g., 3) via DAMON_LRU_SORT or
DAMON_RECLAIM, 'min_region_sz' becomes a non-power-of-2 value. While
damon_commit_ctx() correctly detects this and returns -EINVAL, it sets
th... | ```diff
diff --git a/mm/damon/lru_sort.c b/mm/damon/lru_sort.c
index 2eb559d913b6..eca88ed941b3 100644
--- a/mm/damon/lru_sort.c
+++ b/mm/damon/lru_sort.c
@@ -286,6 +286,11 @@ static int damon_lru_sort_apply_parameters(void)
param_ctx->addr_unit = addr_unit;
param_ctx->min_region_sz = max(DAMON_MIN_REGION_SZ / addr... |
d200cfc81c069e2192c6cc082c38d1c8b0427989 | Analyze and fix the following issue in the Linux kernel code: mm/damon/sysfs-schemes: fix double increment of nr_regions | Problem Details:
damos_sysfs_populate_region_dir() increments sysfs_regions->nr_regions
twice when adding a new region: once explicitly before
kobject_init_and_add(), and once again through the post-increment used for
the kobject name.
As a result, nr_regions no longer matches the actual number of live
regions, and re... | ```diff
diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index ab2153fff9a8..0d3021db0b99 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -2995,7 +2995,7 @@ void damos_sysfs_populate_region_dir(struct damon_sysfs_schemes *sysfs_schemes,
if (kobject_init_and_add(®ion->kobj,
... |
42791eddab096b67e368ff0c1f3e331b4b72971a | Analyze and fix the following issue in the Linux kernel code: sparc/mm: remove register_page_bootmem_info() | Problem Details:
Patch series "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 1)".
We want to remove CONFIG_HAVE_BOOTMEM_INFO_NODE. As a first step, let's
limit the remaining harm to x86 and core code, removing sparc, ppc and
s390 leftovers, starting the stepwise removal by removing and simplifying
some code.
Once a... | ```diff
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 367c269305e5..3b679b1d1d72 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -27,7 +27,6 @@
#include <linux/percpu.h>
#include <linux/mmzone.h>
#include <linux/gfp.h>
-#include <linux/bootmem_info.h>
#include <asm/hea... |
2b117897d5c7c5ffdaca3ea40aa7658c54ae7cb8 | Analyze and fix the following issue in the Linux kernel code: selftests/mm: fix mmap() return value check in run_migration_benchmark | Problem Details:
mmap() returns MAP_FAILED on error, not NULL. The current check uses
!buffer->ptr, which evaluates to false when mmap() fails (since MAP_FAILED
is (void *)-1, not 0), so the error path is never taken.
Link: https://lore.kernel.org/20260512101305.139509-1-lihongfu@kylinos.cn
Signed-off-by: Hongfu Li <... | ```diff
diff --git a/tools/testing/selftests/mm/hmm-tests.c b/tools/testing/selftests/mm/hmm-tests.c
index 77fb4c5d871b..7a4daadfb0c8 100644
--- a/tools/testing/selftests/mm/hmm-tests.c
+++ b/tools/testing/selftests/mm/hmm-tests.c
@@ -2738,7 +2738,7 @@ static inline int run_migration_benchmark(int fd, int use_thp, size... |
cfa5274a5dc2a23b957da5dc806d2ac0c7a66af0 | Analyze and fix the following issue in the Linux kernel code: net: dsa: sja1105: flower: reject cross-chip redirect | Problem Details:
dsa_port_from_netdev() may return a valid port from a different switch
chip. Programming another chip's port index into the local hardware
causes redirection to the wrong port, or an out-of-bounds access if the
index exceeds the local chip's port count.
Apply a minimal fix that adds a check to catch t... | ```diff
diff --git a/drivers/net/dsa/sja1105/sja1105_flower.c b/drivers/net/dsa/sja1105/sja1105_flower.c
index fba926f85b47..7547999a113f 100644
--- a/drivers/net/dsa/sja1105/sja1105_flower.c
+++ b/drivers/net/dsa/sja1105/sja1105_flower.c
@@ -391,9 +391,9 @@ int sja1105_cls_flower_add(struct dsa_switch *ds, int port,
... |
02e545c4297a26dbbc41df81b831e7f605bcd306 | Analyze and fix the following issue in the Linux kernel code: sched_ext: Don't warn on NULL cgrp_moving_from in scx_cgroup_move_task() | Problem Details:
A WARN fires when systemd's user manager writes "+cpu +memory +pids" to
its own subtree_control while a sched_ext scheduler is loaded:
WARNING: at kernel/sched/ext.c:3227 scx_cgroup_move_task+0xa8/0xb0
scx_cgroup_move_task+0xa8/0xb0
sched_move_task+0x134/0x290
cpu_cgroup_attach+0x39/0x70
... | ```diff
diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index c1762420cc35..8e88a25bc602 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -4402,11 +4402,13 @@ void scx_cgroup_move_task(struct task_struct *p)
return;
/*
- * @p must have ops.cgroup_prep_move() called on it and thus
- * cgrp_movin... |
5eba3e48d78edd7551b992cb7ba687019b3a78da | Analyze and fix the following issue in the Linux kernel code: sctp: diag: reject stale associations in dump_one path | Problem Details:
The SCTP exact sock_diag lookup can hold a transport reference, block on
lock_sock(sk), and then resume after sctp_association_free() has marked
the association dead and freed its bind address list.
When that happens, inet_assoc_attr_size() and
inet_diag_msg_sctpasoc_fill() can still dereference assoc... | ```diff
diff --git a/net/sctp/diag.c b/net/sctp/diag.c
index 2afb376299fe..d758f5c3e06e 100644
--- a/net/sctp/diag.c
+++ b/net/sctp/diag.c
@@ -266,15 +266,15 @@ static int sctp_sock_dump_one(struct sctp_endpoint *ep, struct sctp_transport *t
lock_sock(sk);
- rep = nlmsg_new(inet_assoc_attr_size(sk, assoc), GFP_KE... |
b455410146bf723c7ebcb49ecd5becc0d6611482 | Analyze and fix the following issue in the Linux kernel code: net: fec: fix pinctrl default state restore order on resume | Problem Details:
In fec_resume(), fec_enet_clk_enable() is called before
pinctrl_pm_select_default_state() in the non-WoL path, inverting the
ordering used in fec_suspend() which correctly switches to the sleep
pinctrl state before disabling clocks.
For PHYs with the PHY_RST_AFTER_CLK_EN flag (e.g. TI DP83848 or
SMSC ... | ```diff
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index f89aa94ce020..6ebde65d7f1b 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -5594,6 +5594,7 @@ static int fec_resume(struct device *dev)
if (fep->r... |
10400b9455e735601d94e7293db1c48a685547f0 | Analyze and fix the following issue in the Linux kernel code: media: qcom: iris: Fix FPS calculation and VPP FW overhead | Problem Details:
Use div_u64() instead of mult_fract as u64 operator division fails on 32 bit
systems which don't link against libgcc.
Fixes: 5c66647a5c3e ("media: iris: add FPS calculation and VPP FW overhead in frequency formula")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbui... | ```diff
diff --git a/drivers/media/platform/qcom/iris/iris_vpu_common.c b/drivers/media/platform/qcom/iris/iris_vpu_common.c
index 5a85568c5ee1..37dbfe433a08 100644
--- a/drivers/media/platform/qcom/iris/iris_vpu_common.c
+++ b/drivers/media/platform/qcom/iris/iris_vpu_common.c
@@ -444,7 +444,7 @@ u64 iris_vpu3x_vpu4x_... |
8173d22b211f615015f7b35f48ab11a6dd78dc99 | Analyze and fix the following issue in the Linux kernel code: net: lan743x: permit VLAN-tagged packets up to configured MTU | Problem Details:
VLAN-tagged interfaces on lan743x devices were previously unreachable via
SSH and failed to respond to large ping packets (e.g. "ping -s 1469" given
MTU=1500). In these scenarios, "ethtool -S" reports non-zero "RX Oversize
Frame Errors". According to Microchip AN2948, the MAC_RX FSE (VLAN field
size en... | ```diff
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index f3332417162e..ffac22883e49 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -1219,6 +1219,36 @@ static void lan743x_mac_set_address(st... |
8545eda00fdf3d7e17933ce0f706d005b1bad42d | Analyze and fix the following issue in the Linux kernel code: arm64: dts: rockchip: Fix vcc_sdio regulator max voltage on Pinebook Pro | Problem Details:
The vcc_sdio regulator supports 1.8V to 3.4V output range according to
its datasheet.
The current DT incorrectly limits the max voltage to 3.0V. This limit
causes issues issues downstream with u-boot, which refuses to apply the
out-of range value, and falls back to the minimum in that range: 1.8V.
Thi... | ```diff
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
index b5c05928142c..f21fcdc1b49a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
@@ -526,7 +526,7 @@
regulato... |
20cf0fb715c41111469577e85e35d15f099473e0 | Analyze and fix the following issue in the Linux kernel code: net: rds: clear i_sends on setup unwind | Problem Details:
The RDS IB connection teardown path is written so it can run during
partial startup and on repeated shutdown attempts. It uses NULL
pointers to distinguish resources that are still owned from resources
that have already been released.
When rds_ib_setup_qp() fails after allocating i_sends but before
al... | ```diff
diff --git a/net/rds/ib_cm.c b/net/rds/ib_cm.c
index 0c64c504f79d..4001de0c4959 100644
--- a/net/rds/ib_cm.c
+++ b/net/rds/ib_cm.c
@@ -656,6 +656,7 @@ static int rds_ib_setup_qp(struct rds_connection *conn)
sends_out:
vfree(ic->i_sends);
+ ic->i_sends = NULL;
ack_dma_out:
rds_dma_hdr_free(rds_ibdev->d... |
74e144274af39935b0f410c0ee4d2b91c3730414 | Analyze and fix the following issue in the Linux kernel code: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock | Problem Details:
When FUTEX_CMP_REQUEUE_PI requeues a non-top waiter that already owns the
target PI futex, task_blocks_on_rt_mutex() returns -EDEADLK before setting
waiter->task.
The subsequent remove_waiter() in rt_mutex_start_proxy_lock() dereferences
the NULL waiter->task, causing a kernel crash.
Add a self-deadl... | ```diff
diff --git a/kernel/futex/requeue.c b/kernel/futex/requeue.c
index b597cb3d17fc..1d99a84dc9ad 100644
--- a/kernel/futex/requeue.c
+++ b/kernel/futex/requeue.c
@@ -643,6 +643,12 @@ retry_private:
continue;
}
+ /* Self-deadlock: non-top waiter already owns the PI futex. */
+ if (rt_mutex_owner(&pi_... |
962c17dd287887aa87a6f30d64239d7e1e4e05fa | Analyze and fix the following issue in the Linux kernel code: net: airoha: Move {cpu,fwd}_tx_packets in airoha_gdm_dev struct | Problem Details:
Since now multiple net_devices connected to different QDMA blocks can
share the same GDM port, cpu_tx_packets and fwd_tx_packets fields can
be overwritten with the value from a different QDMA block. In order to
fix the issue move cpu_tx_packets and fwd_tx_packets fields from
airoha_gdm_port struct to a... | ```diff
diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c
index 4f77a0c22162..72c6f554508c 100644
--- a/drivers/net/ethernet/airoha/airoha_eth.c
+++ b/drivers/net/ethernet/airoha/airoha_eth.c
@@ -2315,19 +2315,17 @@ static int airoha_qdma_get_tx_ets_stats(struct net_device... |
069626af6dfaa26b82119900f4aff1fec38d5983 | Analyze and fix the following issue in the Linux kernel code: net: airoha: Move qos_sq_bmap in airoha_gdm_dev struct | Problem Details:
Since now multiple net_devices connected to different QDMA blocks can
share the same GDM port, qos_sq_bmap field can be overwritten with the
configuration obtained from a net_device connected to a different QDMA
block. In order to fix the issue move qos_sq_bmap field from
airoha_gdm_port struct to airo... | ```diff
diff --git a/drivers/net/ethernet/airoha/airoha_eth.c b/drivers/net/ethernet/airoha/airoha_eth.c
index c5d25f7640ac..4f77a0c22162 100644
--- a/drivers/net/ethernet/airoha/airoha_eth.c
+++ b/drivers/net/ethernet/airoha/airoha_eth.c
@@ -2602,30 +2602,40 @@ static int airoha_qdma_set_tx_rate_limit(struct net_devic... |
5996b5ab8b37f32b62f8a25f27c9888b628fefb1 | Analyze and fix the following issue in the Linux kernel code: doc/netlink: rt-link: fix binary attributes marked as strings | Problem Details:
These link-attrs attributes were previously marked as strings:
- wireless - struct iw_event
- protinfo - a nest of ifla6-attrs or linkinfo-brport-attrs
- cost, priority - unused
Signed-off-by: Remy D. Farley <one-d-wide@protonmail.com>
Link: https://patch.msgid.link/20260529121355.1564817-1-one-d-wid... | ```diff
diff --git a/Documentation/netlink/specs/rt-link.yaml b/Documentation/netlink/specs/rt-link.yaml
index 79c89f204415..a5c0297818c6 100644
--- a/Documentation/netlink/specs/rt-link.yaml
+++ b/Documentation/netlink/specs/rt-link.yaml
@@ -880,19 +880,21 @@ attribute-sets:
struct: rtnl-link-stats
-
... |
163bea8010bdf785b6dadeab0cb199e94e1f99bd | Analyze and fix the following issue in the Linux kernel code: netdevsim: psp: use atomic64 for psp stats counters | Problem Details:
The existing u64_stats_t-based psp counters had two preexisting api
usage bugs: u64_stats_init() was never called on the syncp object, and
the writer side of the u64_stats_update_begin()/end() api was not
serialized. Switch the counters to atomic64_t instead. Atomics need
no initialization and are inhe... | ```diff
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index d909c4160ea1..4c9cc96dcec3 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -22,7 +22,6 @@
#include <linux/list.h>
#include <linux/netdevice.h>
#include <linux/ptp_mock.h>
-#inclu... |
abaef7e966fdc236ee57ea30c019365110d00f48 | Analyze and fix the following issue in the Linux kernel code: netdevsim: psp: update rx stats on the peer netdevsim | Problem Details:
nsim_do_psp() handles both tx and rx psp processing in the sending
device's nsim_start_xmit() path. The existing code has a logical bug,
where we erroneously increment rx_bytes and rx_packets on the sending
devices stats, instead of the peer device.
Additionally, compute psp_len after psp_dev_encapsul... | ```diff
diff --git a/drivers/net/netdevsim/psp.c b/drivers/net/netdevsim/psp.c
index c6000ebc6bc8..c6c1acaa99a3 100644
--- a/drivers/net/netdevsim/psp.c
+++ b/drivers/net/netdevsim/psp.c
@@ -22,6 +22,7 @@ nsim_do_psp(struct sk_buff *skb, struct netdevsim *ns,
struct psp_dev *peer_psd;
struct psp_assoc *pas;
struc... |
5893cc75a19146b1365867dcf7f01ed420f702ed | Analyze and fix the following issue in the Linux kernel code: netdevsim: fib: fix use-after-free of FIB data via debugfs | Problem Details:
Writing to the netdevsim debugfs file
"netdevsim/netdevsimN/fib/nexthop_bucket_activity" enters
nsim_nexthop_bucket_activity_write(), which looks up a nexthop in
data->nexthop_ht under rtnl_lock(). If a network namespace teardown,
devlink reload or device deletion runs concurrently, nsim_fib_destroy()
... | ```diff
diff --git a/drivers/net/netdevsim/fib.c b/drivers/net/netdevsim/fib.c
index 1a42bdbfaa41..55bcdefadc9b 100644
--- a/drivers/net/netdevsim/fib.c
+++ b/drivers/net/netdevsim/fib.c
@@ -1562,14 +1562,11 @@ struct nsim_fib_data *nsim_fib_create(struct devlink *devlink,
data->devlink = devlink;
nsim_dev = devl... |
3f7fbde4cdd4a25c199a60849897459a63907ca5 | Analyze and fix the following issue in the Linux kernel code: vdso/datastore: Mark vdso_k_*_data pointers as __ro_after_init | Problem Details:
These pointers are only modified once in vdso_setup_data_pages(),
during the init phase. Make them read-only after that.
Drop __refdata as that would conflict with __ro_after_init.
Modpost does accept the reference from a __ro_after_init symbol to
an __init one.
Fixes: 05988dba1179 ("vdso/datastore: ... | ```diff
diff --git a/lib/vdso/datastore.c b/lib/vdso/datastore.c
index cf5d784a4a5a..17d37b82ebc6 100644
--- a/lib/vdso/datastore.c
+++ b/lib/vdso/datastore.c
@@ -11,21 +11,21 @@
static u8 vdso_initdata[VDSO_NR_PAGES * PAGE_SIZE] __aligned(PAGE_SIZE) __initdata = {};
#ifdef CONFIG_GENERIC_GETTIMEOFDAY
-struct vdso_... |
571d4242c466e558c9fd57a9b3d9a045b1f400d1 | Analyze and fix the following issue in the Linux kernel code: rust/drm: Introduce DeviceContext | Problem Details:
One of the tricky things about DRM bindings in Rust is the fact that
initialization of a DRM device is a multi-step process. It's quite normal
for a device driver to start making use of its DRM device for tasks like
creating GEM objects before userspace registration happens. This is an
issue in rust th... | ```diff
diff --git a/drivers/gpu/drm/nova/driver.rs b/drivers/gpu/drm/nova/driver.rs
index 4289df7de01c..33fe088dd3b9 100644
--- a/drivers/gpu/drm/nova/driver.rs
+++ b/drivers/gpu/drm/nova/driver.rs
@@ -23,7 +23,7 @@ pub(crate) struct Nova {
}
/// Convienence type alias for the DRM device type for this driver
-pub(... |
d4f198c13611257f7f29d3c614721d0ac5d362f5 | Analyze and fix the following issue in the Linux kernel code: timers/migration: Deactivate per-capacity hierarchies under nohz_full | Problem Details:
NOHZ_FULL CPUs global timers are guaranteed to be handled by the timekeeper
CPU, which never stops its tick and therefore remains active in the
hierarchy.
But since the introduction of per-capacity hierarchies, this guarantee is
broken because the timekeeper may not belong to the same hierarchy as all... | ```diff
diff --git a/kernel/time/timer_migration.c b/kernel/time/timer_migration.c
index 8032b0044f44..8ba53ad49173 100644
--- a/kernel/time/timer_migration.c
+++ b/kernel/time/timer_migration.c
@@ -1464,8 +1464,24 @@ static long tmigr_trigger_active(void *unused)
return 0;
}
-static struct tmigr_hierarchy *__tmig... |
e4a70f5fbd43f55b474028a2cee3d78e4b443dd7 | Analyze and fix the following issue in the Linux kernel code: timers/migration: Fix hotplug migrator selection target on asymetric capacity machines | Problem Details:
When a top-level migrator is deactivated, either at CPU down hotplug time
or when a CPU is domain isolated, a new migrator is elected among the
available CPUs and woken up to take over the migration duty.
However that election must happen at the scope of a given hierarchy and not
globally, which the i... | ```diff
diff --git a/kernel/time/timer_migration.c b/kernel/time/timer_migration.c
index 25e3c563eb74..8032b0044f44 100644
--- a/kernel/time/timer_migration.c
+++ b/kernel/time/timer_migration.c
@@ -1464,6 +1464,18 @@ static long tmigr_trigger_active(void *unused)
return 0;
}
+static struct tmigr_hierarchy *__tmig... |
7198e3927a14535475a24cce559f41f97e6c0b66 | Analyze and fix the following issue in the Linux kernel code: sched/cputime: Handle idle irqtime gracefully | Problem Details:
The dyntick-idle cputime accounting always assumes that interrupt time
accounting is enabled and consequently stops elapsing the idle time during
dyntick-idle interrupts.
This doesn't mix up well with disabled interrupt time accounting because
then idle interrupts become a cputime blind-spot. Also thi... | ```diff
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index 335d2c127763..94be22aa5cb6 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -47,7 +47,8 @@ static void irqtime_account_delta(struct irqtime *irqtime, u64 delta,
u64_stats_update_begin(&irqtime->sync);
cpustat[idx] += delta... |
86db4084b4b5d1a074bcc66c108a4c9d266812d4 | Analyze and fix the following issue in the Linux kernel code: tick/sched: Fix TOCTOU in nohz idle time fetch | Problem Details:
When the nohz idle time is fetched, the current clock timestamp is taken
outside the seqcount, which can result in a race as reported by Sashiko:
get_cpu_sleep_time_us() tick_nohz_start_idle()
----------------------- ---------------------
now = ktime_get()
... | ```diff
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index cbbb87a0c6e7..171393367b5c 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -797,15 +797,16 @@ static u64 get_cpu_sleep_time_us(struct tick_sched *ts, ktime_t *sleeptime,
*last_update_time = ktime_to_us(now);
do... |
16e408e607a94b646fb14a2a98422c6877ae4b3c | Analyze and fix the following issue in the Linux kernel code: net: garp: fix unsigned integer underflow in garp_pdu_parse_attr | Problem Details:
The receive-side GARP attribute parser computes dlen with reversed
operands:
dlen = sizeof(*ga) - ga->len;
ga->len is the on-wire attribute length and includes the GARP attribute
header. For normal attributes with data, ga->len is larger than
sizeof(*ga), so the subtraction underflows in unsi... | ```diff
diff --git a/net/802/garp.c b/net/802/garp.c
index 6f563b6797d9..c7a39f298ad6 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -453,7 +453,7 @@ static int garp_pdu_parse_attr(struct garp_applicant *app, struct sk_buff *skb,
if (!pskb_may_pull(skb, ga->len))
return -1;
skb_pull(skb, ga->len);
- dlen = ... |
ce4abda5e12622f33450159e76c8f56d28d7f03d | Analyze and fix the following issue in the Linux kernel code: time: Fix off-by-one in settimeofday() usec validation | Problem Details:
The validation check uses '>' instead of '>=' when comparing tv_usec
against USEC_PER_SEC, allowing the value 1000000 through. After
conversion to nanoseconds (*= 1000), this produces tv_nsec ==
NSEC_PER_SEC, violating the timespec invariant that tv_nsec must be
less than NSEC_PER_SEC.
Use '>=' to rej... | ```diff
diff --git a/kernel/time/time.c b/kernel/time/time.c
index 0d832317d576..771cef87ad3b 100644
--- a/kernel/time/time.c
+++ b/kernel/time/time.c
@@ -207,7 +207,7 @@ SYSCALL_DEFINE2(settimeofday, struct __kernel_old_timeval __user *, tv,
get_user(new_ts.tv_nsec, &tv->tv_usec))
return -EFAULT;
- if (n... |
c1ca14ca227e92101c7ae597213275b60f4212c6 | Analyze and fix the following issue in the Linux kernel code: clockevents: Fix duplicate type specifier in stub function parameter | Problem Details:
The stub for arch_inlined_clockevent_set_next_coupled() has 'u64 u64
cycles' in its parameter list. Since u64 is a typedef, the compiler
parses the second 'u64' as the parameter name, making 'cycles' an
unused token. Remove the duplicate so the parameter is correctly named.
Fixes: 89f951a1e8ad ("clock... | ```diff
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 5e22697b098d..0014d163f989 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -301,7 +301,7 @@ static int clockevents_program_min_delta(struct clock_event_device *dev)
#include <asm/clock_inlined.h>
#else
static _... |
c16c205aeb16e586f645750153064cf9275aafb2 | Analyze and fix the following issue in the Linux kernel code: ACPI: button: Rework device verification during probe | Problem Details:
Instead of manually comparing the primary ID of the device (retuned
by _HID) with each of the device IDs supported by the driver, use
acpi_match_acpi_device() (which includes the ACPI companion device
pointer check against NULL) and store the ACPI button type as
driver_data in button_device_ids[], whic... | ```diff
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 9fe8d212b606..00c56f840744 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -59,11 +59,11 @@ MODULE_DESCRIPTION("ACPI Button Driver");
MODULE_LICENSE("GPL");
static const struct acpi_device_id button_device_ids[] = {
- {ACPI_B... |
180a232ea78003d1dc869b217b4e49106fd58e8f | Analyze and fix the following issue in the Linux kernel code: ntsync: Honour caller's time namespace for absolute MONOTONIC timeouts | Problem Details:
ntsync_schedule() takes the absolute timeout from userspace and hands it to
schedule_hrtimeout_range_clock() with HRTIMER_MODE_ABS. For the default
CLOCK_MONOTONIC path, it does not call timens_ktime_to_host() first.
A process inside a CLOCK_MONOTONIC time namespace computes the absolute
timeout in it... | ```diff
diff --git a/drivers/misc/ntsync.c b/drivers/misc/ntsync.c
index 30af282262ef..02c9d1192812 100644
--- a/drivers/misc/ntsync.c
+++ b/drivers/misc/ntsync.c
@@ -19,6 +19,7 @@
#include <linux/sched/signal.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
+#include <linux/time_namespace.h>
#include <uapi/l... |
afd0f17ca46258cec3a5cc48b8df9327fe772490 | Analyze and fix the following issue in the Linux kernel code: hsr: Remove WARN_ONCE() in hsr_addr_is_self(). | Problem Details:
syzbot reported the warning [0] in hsr_addr_is_self(),
whose assumption is simply wrong.
hsr->self_node is cleared in hsr_del_self_node(), which
is called from hsr_dellink().
Since dev->rtnl_link_ops->dellink() is called before
unregister_netdevice_many(), there is a window when
user can find the dev... | ```diff
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index b514e43766ef..a28dfd8490c5 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -35,10 +35,8 @@ bool hsr_addr_is_self(struct hsr_priv *hsr, unsigned char *addr)
rcu_read_lock();
sn = rcu_dereference(hsr->self_node);
- if (!s... |
e10902df24488ca722303133acfc82490f7d59ad | Analyze and fix the following issue in the Linux kernel code: tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req(). | Problem Details:
syzbot reported a weird reqsk->rsk_refcnt underflow in
__inet_csk_reqsk_queue_drop().
The captured reqsk_put() in __inet_csk_reqsk_queue_drop()
is called only when it successfully removes reqsk from ehash.
Moreover, reqsk_timer_handler() calls another reqsk_put()
after that.
This indicates that the ... | ```diff
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index dbcd37dfdc15..5b934ce8d98a 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -1148,6 +1148,9 @@ static bool reqsk_queue_hash_req(struct request_sock *req)
/* The timer needs to be setup aft... |
b748765019fe9e9234660327090fc1a9665cdbdd | Analyze and fix the following issue in the Linux kernel code: net: Annotate sk->sk_write_space() for UDP SOCKMAP. | Problem Details:
UDP TX skb->destructor() is sock_wfree(), and UDP holds lock_sock()
only for UDP_CORK / MSG_MORE sendmsg().
Otherwise, sk->sk_write_space() may be read locklessly while SOCKMAP
rewrites sk->sk_write_space().
Let's use WRITE_ONCE() and READ_ONCE() for sk->sk_write_space().
Note that the write side is... | ```diff
diff --git a/net/core/sock.c b/net/core/sock.c
index b37b664b6eb9..d097025c116a 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2676,8 +2676,12 @@ void sock_wfree(struct sk_buff *skb)
int old;
if (!sock_flag(sk, SOCK_USE_WRITE_QUEUE)) {
+ void (*sk_write_space)(struct sock *sk);
+
+ sk_write_spac... |
73bf3cca7de6a73f53b6a52dc3b1c82ae5667a4d | Analyze and fix the following issue in the Linux kernel code: pcnet32: stop holding device spin lock during napi_complete_done | Problem Details:
napi_complete_done may call gro_flush_normal (though not currently, as GRO
is unsupported at the moment), which may result in packet TX. This will
eventually result in calling pcnet32_start_xmit - resulting in a deadlock
while trying to re-acquire the already locked spin lock.
It is safe to split the ... | ```diff
diff --git a/drivers/net/ethernet/amd/pcnet32.c b/drivers/net/ethernet/amd/pcnet32.c
index 911808ab13a7..4f3076d4ea34 100644
--- a/drivers/net/ethernet/amd/pcnet32.c
+++ b/drivers/net/ethernet/amd/pcnet32.c
@@ -1407,8 +1407,10 @@ static int pcnet32_poll(struct napi_struct *napi, int budget)
pcnet32_restart(d... |
a99ce697ea5e27b867c9ba4ee55fa5ba3b8d1188 | Analyze and fix the following issue in the Linux kernel code: cgroup: Migrate tasks to the root css when a controller is rebound | Problem Details:
cgroup_apply_control_disable() defers kill_css_finish() while a css is
still populated, relying on css_update_populated() to fire the deferred
kill once the populated count reaches zero.
This deadlocks when a controller is rebound out of a hierarchy. Mounting
an implicit_on_dfl controller such as perf... | ```diff
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 6e92791d279e..4d442c224bf5 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -197,6 +197,14 @@ static u32 cgrp_dfl_implicit_ss_mask;
/* some controllers can be threaded on the default hierarchy */
static u32 cgrp_dfl_threaded... |
b230b57bd6f242aaac3b8e62c7d18c69e1e30392 | Analyze and fix the following issue in the Linux kernel code: RDMA/efa: Validate SQ ring size against max LLQ size | Problem Details:
Validate the SQ ring size against the device's max LLQ size. This
ensures that when using 128-byte WQEs, userspace cannot exceed the queue
limits.
On create QP, userspace provides the SQ ring size (depth x WQE size)
which is validated against the max LLQ size.
Fixes: 40909f664d27 ("RDMA/efa: Add EFA ... | ```diff
diff --git a/drivers/infiniband/hw/efa/efa_verbs.c b/drivers/infiniband/hw/efa/efa_verbs.c
index 7bd0838ebc99..9b2b652800e4 100644
--- a/drivers/infiniband/hw/efa/efa_verbs.c
+++ b/drivers/infiniband/hw/efa/efa_verbs.c
@@ -613,7 +613,8 @@ err_remove_mmap:
}
static int efa_qp_validate_cap(struct efa_dev *dev... |
f8e357ac28c3eb06a266bd10443b3eace6eebd22 | Analyze and fix the following issue in the Linux kernel code: ALSA: seq: Restore created port information after insertion | Problem Details:
Commit 2ee646353cd5 ("ALSA: seq: Register kernel port with full
information") split sequencer port creation from list insertion so a
port can be filled before it becomes visible.
However, snd_seq_ioctl_create_port() still copies port->addr back to the
ioctl argument before snd_seq_insert_port() assign... | ```diff
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 19d6fea012f6..81ef461a9118 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -1306,14 +1306,13 @@ static int snd_seq_ioctl_create_port(struct snd_seq_client *client, void *arg)
}
}
- info-... |
607af438e6430893a822964c841a1994b33acccc | Analyze and fix the following issue in the Linux kernel code: tools/power/x86/intel-speed-select: Harden daemon pidfile open | Problem Details:
Avoid symlink-based pidfile clobbering by opening the pidfile with
O_NOFOLLOW and validating it with fstat() before locking/writing.
The daemon currently uses a fixed pidfile path under /tmp. A local
unprivileged user can pre-create a symlink at that path and cause a
root-run daemon instance to write ... | ```diff
diff --git a/tools/power/x86/intel-speed-select/isst-daemon.c b/tools/power/x86/intel-speed-select/isst-daemon.c
index 66df21b2b573..acedb7432849 100644
--- a/tools/power/x86/intel-speed-select/isst-daemon.c
+++ b/tools/power/x86/intel-speed-select/isst-daemon.c
@@ -148,6 +148,7 @@ static void daemonize(char *r... |
5629eec1a2829871d496f3042884cdc267612f6a | Analyze and fix the following issue in the Linux kernel code: cpufreq/amd-pstate: Fix setting EPP in performance mode | Problem Details:
EPP 0 is the only supported value in the performance policy.
commit 798c47593cca ("cpufreq/amd-pstate: Add support for platform profile
class") changed this while adding platform profile support to the
dynamic EPP feature, but this actually wasn't necessary since platform
profile writes disable manual ... | ```diff
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 62b5d995281d..72df461e7b39 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -1428,7 +1428,7 @@ ssize_t store_energy_performance_preference(struct cpufreq_policy *policy,
epp = cpudata->epp_default_d... |
c1edda54a0f713412f5914f9c9080856694bddca | Analyze and fix the following issue in the Linux kernel code: KVM: s390: Remove ptep_zap_softleaf_entry() | Problem Details:
Migration entries do not need to be removed.
The swap subsystem has been (and still is being) heavily reworked. The
current implementation of ptep_zap_softleaf_entry() has been slowly
modified and is now wrong, since it unconditionally calls
swap_put_entries_direct() for both swap and migration entrie... | ```diff
diff --git a/arch/s390/mm/gmap_helpers.c b/arch/s390/mm/gmap_helpers.c
index 396207163ca6..1cfe4724fbe2 100644
--- a/arch/s390/mm/gmap_helpers.c
+++ b/arch/s390/mm/gmap_helpers.c
@@ -16,24 +16,6 @@
#include <linux/ksm.h>
#include <asm/gmap_helpers.h>
-/**
- * ptep_zap_softleaf_entry() - discard a software l... |
6ae67dcac742529210a23dac6c9a7de1acfb52a3 | Analyze and fix the following issue in the Linux kernel code: KVM: s390: Fix possible reference leak in fault-in code | Problem Details:
If kvm_s390_new_mmu_cache() fails, kvm_s390_faultin_gfn() returns
without releasing the faulted page.
Fix this by moving the allocation of the memory cache outside of the
loop. There is no reason to check at every iteration.
Opportunistically fix a comment.
Fixes: e907ae530133 ("KVM: s390: Add helpe... | ```diff
diff --git a/arch/s390/kvm/faultin.c b/arch/s390/kvm/faultin.c
index cf542b0a7e8e..fee80047bd94 100644
--- a/arch/s390/kvm/faultin.c
+++ b/arch/s390/kvm/faultin.c
@@ -54,6 +54,13 @@ int kvm_s390_faultin_gfn(struct kvm_vcpu *vcpu, struct kvm *kvm, struct guest_fa
return 0;
}
+ if (!mc) {
+ local_mc = kv... |
7b53b4801884d48551f26a17f00cdc0ae4640d64 | Analyze and fix the following issue in the Linux kernel code: KVM: s390: Prevent memslots outside the ASCE range | Problem Details:
With KVM_S390_VM_MEM_LIMIT_SIZE, userspace can set the highest address
allowed for the VM. Creating a memslot that lies over the maximum
address does not make sense and is only a potential source of bugs.
Prevent creation of memslots over the maximum address, and prevent the
maximum address from being... | ```diff
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index e09960c2e6ed..ffb20a64d328 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -999,7 +999,10 @@ static int kvm_s390_set_mem_control(struct kvm *kvm, struct kvm_device_attr *att
break;
}
case KVM_S390_VM_MEM_LIMIT_... |
ec02fe217fa66d79f8a65e8d28be9295c7f85093 | Analyze and fix the following issue in the Linux kernel code: io_uring/bpf-ops: restrict ctx access to BPF | Problem Details:
BPF programs should have no need in looking into struct io_ring_ctx, if
anything, most of such cases would be anti patterns like looking up ring
indices directly via the context.
Replace it with a new empty structure, which is just an alias to struct
io_ring_ctx. It'll create a new BTF type and fail v... | ```diff
diff --git a/include/linux/io_uring_types.h b/include/linux/io_uring_types.h
index 23b8891d5704..aa4d5477f859 100644
--- a/include/linux/io_uring_types.h
+++ b/include/linux/io_uring_types.h
@@ -290,6 +290,8 @@ enum {
IO_RING_F_IOWQ_LIMITS_SET = BIT(12),
};
+struct iou_ctx {};
+
struct io_ring_ctx {
/* ... |
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