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Linux kernel bugs found with syzkaller fuzzer and reported automatically by syzbot.

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syzbot, … Oleg Nesterov12

11:19 AM

[PATCH] signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()

On 05/22, Christian Brauner wrote: > > It's encouraged to provide Acked-bys and Reviewed-

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[PATCH] signal: clear JOBCTL_PENDING_MASK for caller in zap_other_threads()

On 05/22, Christian Brauner wrote: > > It's encouraged to provide Acked-bys and Reviewed-

11:19 AM

10:32 AM

Re: INFO: rcu detected stall in corrupted (4)

> This bug is not related to the sound subsystem. > > #syz unset subsystems: sound The

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Re: INFO: rcu detected stall in corrupted (4)

> This bug is not related to the sound subsystem. > > #syz unset subsystems: sound The

10:32 AM

10:05 AM

[syzbot] [sound?] KASAN: slab-use-after-free Read in snd_pcm_oss_look_for_setup (2)

Hello, syzbot found the following issue on: HEAD commit: 6916d5703ddf Merge tag 'drm-fixes-2026-

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[syzbot] [sound?] KASAN: slab-use-after-free Read in snd_pcm_oss_look_for_setup (2)

Hello, syzbot found the following issue on: HEAD commit: 6916d5703ddf Merge tag 'drm-fixes-2026-

10:05 AM

8:32 AM

[syzbot] Monthly input report (May 2026)

Hello input maintainers/developers, This is a 31-day syzbot report for the input subsystem. All

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[syzbot] Monthly input report (May 2026)

Hello input maintainers/developers, This is a 31-day syzbot report for the input subsystem. All

8:32 AM

syzbot, … Sebastian Andrzej Siewior7

3:35 AM

[syzbot] [input?] possible deadlock in tasklet_action_common (2)

On 2026-05-22 15:21:43 [+0800], Hillf Danton wrote: > > > On RT spinlock is replaced with

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[syzbot] [input?] possible deadlock in tasklet_action_common (2)

On 2026-05-22 15:21:43 [+0800], Hillf Danton wrote: > > > On RT spinlock is replaced with

3:35 AM

2:36 AM

[syzbot] [ocfs2?] UBSAN: array-index-out-of-bounds in ocfs2_dx_dir_lookup_rec

Hello, syzbot found the following issue on: HEAD commit: e5d505e3664b Merge tag 'trace-v7.1-rc3

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[syzbot] [ocfs2?] UBSAN: array-index-out-of-bounds in ocfs2_dx_dir_lookup_rec

Hello, syzbot found the following issue on: HEAD commit: e5d505e3664b Merge tag 'trace-v7.1-rc3

2:36 AM

syzbot, … Alexander Potapenko11

2:27 AM

[syzbot] [kernel?] upstream test error: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt

On Tue, May 12, 2026 at 7:46 PM Mark Rutland <mark.r...@arm.com> wrote: > > Hi, >

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[syzbot] [kernel?] upstream test error: KMSAN: uninit-value in irqentry_exit_to_kernel_mode_preempt

On Tue, May 12, 2026 at 7:46 PM Mark Rutland <mark.r...@arm.com> wrote: > > Hi, >

2:27 AM

1:20 AM

[syzbot] [mm?] BUG: sleeping function called from invalid context in shmem_inode_acct_blocks

Hello, syzbot found the following issue on: HEAD commit: f2abc305aa93 riscv: Define __riscv_copy_{,

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[syzbot] [mm?] BUG: sleeping function called from invalid context in shmem_inode_acct_blocks

Hello, syzbot found the following issue on: HEAD commit: f2abc305aa93 riscv: Define __riscv_copy_{,

1:20 AM

May 21

[syzbot] [rds?] KCSAN: data-race in rds_poll / rds_sendmsg

Hello, syzbot found the following issue on: HEAD commit: e5d505e3664b Merge tag 'trace-v7.1-rc3

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[syzbot] [rds?] KCSAN: data-race in rds_poll / rds_sendmsg

Hello, syzbot found the following issue on: HEAD commit: e5d505e3664b Merge tag 'trace-v7.1-rc3

May 21

syzbot, … Johannes Berg4

May 21

[syzbot] [wireless?] WARNING in cfg80211_chandef_create

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

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[syzbot] [wireless?] WARNING in cfg80211_chandef_create

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

May 21

syzbot, … Hillf Danton13

May 21

[syzbot] [kernel?] KASAN: slab-use-after-free Read in futex_unqueue

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

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[syzbot] [kernel?] KASAN: slab-use-after-free Read in futex_unqueue

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

May 21

May 21

[syzbot] [jfs?] possible deadlock in diFree (3)

Auto-closing this bug as obsolete. Crashes did not happen for a while, no reproducer and no activity.

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[syzbot] [jfs?] possible deadlock in diFree (3)

Auto-closing this bug as obsolete. Crashes did not happen for a while, no reproducer and no activity.

May 21

May 21

[syzbot] [kernel?] KASAN: unknown-crash Read in copy_mc_to_kernel

Auto-closing this bug as obsolete. Crashes did not happen for a while, no reproducer and no activity.

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[syzbot] [kernel?] KASAN: unknown-crash Read in copy_mc_to_kernel

Auto-closing this bug as obsolete. Crashes did not happen for a while, no reproducer and no activity.

May 21

May 21

Re: [syzbot] [net?] [bpf?] KASAN: slab-use-after-free Read in __sk_msg_recvmsg

Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost

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Re: [syzbot] [net?] [bpf?] KASAN: slab-use-after-free Read in __sk_msg_recvmsg

Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost

May 21

May 21

[syzbot] [comedi?] general protection fault in comedi_get_is_subdevice_running

Hello, syzbot found the following issue on: HEAD commit: e98d21c170b0 Add linux-next specific files

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[syzbot] [comedi?] general protection fault in comedi_get_is_subdevice_running

Hello, syzbot found the following issue on: HEAD commit: e98d21c170b0 Add linux-next specific files

May 21

May 21

[syzbot] [wireless?] WARNING in drv_get_tsf (3)

Hello, syzbot found the following issue on: HEAD commit: 6916d5703ddf Merge tag 'drm-fixes-2026-

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[syzbot] [wireless?] WARNING in drv_get_tsf (3)

Hello, syzbot found the following issue on: HEAD commit: 6916d5703ddf Merge tag 'drm-fixes-2026-

May 21

May 21

[syzbot] [net?] [bpf?] KASAN: slab-use-after-free Read in __sk_msg_recvmsg

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

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[syzbot] [net?] [bpf?] KASAN: slab-use-after-free Read in __sk_msg_recvmsg

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

May 21

May 21

[syzbot] [bluetooth?] WARNING in hci_send_acl (4)

Hello, syzbot found the following issue on: HEAD commit: 5cbb61bf4168 arm64/fpsimd: ptrace: zero

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[syzbot] [bluetooth?] WARNING in hci_send_acl (4)

Hello, syzbot found the following issue on: HEAD commit: 5cbb61bf4168 arm64/fpsimd: ptrace: zero

May 21

syzbot, Greg Kroah-Hartman2

May 21

[PATCH] firmware_loader: Fix recursive lock in device_cache_fw_images()

On Thu, May 21, 2026 at 11:30:44AM +0000, syzbot wrote: > A recursive locking deadlock can occur

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[PATCH] firmware_loader: Fix recursive lock in device_cache_fw_images()

On Thu, May 21, 2026 at 11:30:44AM +0000, syzbot wrote: > A recursive locking deadlock can occur

May 21

May 21

[syzbot ci] Re: mm: reliable 1GB page allocation

syzbot ci has tested the following series [v1] mm: reliable 1GB page allocation https://lore.kernel.

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[syzbot ci] Re: mm: reliable 1GB page allocation

syzbot ci has tested the following series [v1] mm: reliable 1GB page allocation https://lore.kernel.

May 21

May 21

[syzbot] [netfilter?] WARNING in nf_hook_entry_head (2)

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

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[syzbot] [netfilter?] WARNING in nf_hook_entry_head (2)

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

May 21

syzbot, … Hillf Danton8

May 21

[syzbot] [fs?] BUG: corrupted list in remove_wait_queue (2)

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

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[syzbot] [fs?] BUG: corrupted list in remove_wait_queue (2)

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

May 21

May 20

[syzbot] [mm?] [ext4?] BUG: unable to handle kernel NULL pointer dereference in qlist_free_all (10)

Hello, syzbot found the following issue on: HEAD commit: df685633c3db Merge tag 'rcu-fixes.v7.1-

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[syzbot] [mm?] [ext4?] BUG: unable to handle kernel NULL pointer dereference in qlist_free_all (10)

Hello, syzbot found the following issue on: HEAD commit: df685633c3db Merge tag 'rcu-fixes.v7.1-

May 20

May 20

[syzbot] [btrfs?] WARNING in btrfs_rename2 (2)

Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost

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[syzbot] [btrfs?] WARNING in btrfs_rename2 (2)

Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost

May 20

syzbot, … Mike Christie7

May 20

[syzbot] [kernel?] WARNING in signal_wake_up_state

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

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[syzbot] [kernel?] WARNING in signal_wake_up_state

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

May 20

syzbot, Hillf Danton8

May 20

[syzbot] [bluetooth?] KASAN: slab-use-after-free Read in __hci_req_sync

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

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[syzbot] [bluetooth?] KASAN: slab-use-after-free Read in __hci_req_sync

For archival purposes, forwarding an incoming command email to linux-...@vger.kernel.org,

May 20

May 20

[syzbot] [usb?] KASAN: invalid-free in dev_free (3)

Auto-closing this bug as obsolete. Crashes did not happen for a while, no reproducer and no activity.

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[syzbot] [usb?] KASAN: invalid-free in dev_free (3)

Auto-closing this bug as obsolete. Crashes did not happen for a while, no reproducer and no activity.

May 20

May 20

[syzbot] [net?] possible deadlock in __sk_receive_skb

Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost

unread,

[syzbot] [net?] possible deadlock in __sk_receive_skb

Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: lost

May 20

May 20

[syzbot] [ext4?] INFO: task hung in lock_two_directories (4)

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

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[syzbot] [ext4?] INFO: task hung in lock_two_directories (4)

Auto-closing this bug as obsolete. No recent activity, existing reproducers are no longer triggering

May 20

Hillf Danton, … Heitor Alves de Siqueira6

May 20

Re: [PATCH] Bluetooth: hci_core: Don't queue tx_work while draining workqueue

On Mon May 18, 2026 at 5:48 PM -03, Luiz Augusto von Dentz wrote: > Hi Heitor, > > On Mon,

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Re: [PATCH] Bluetooth: hci_core: Don't queue tx_work while draining workqueue

On Mon May 18, 2026 at 5:48 PM -03, Luiz Augusto von Dentz wrote: > Hi Heitor, > > On Mon,

May 20

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