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

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syzbot ci, Kuniyuki Iwashima2

2:15 PM

[syzbot ci] Re: ipmr: No RTNL for RTNL_FAMILY_IPMR rtnetlink.

From: syzbot ci <syzbot+ci7bf...@syzkaller.appspotmail.com> Date: Thu, 26 Feb 2026 09

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[syzbot ci] Re: ipmr: No RTNL for RTNL_FAMILY_IPMR rtnetlink.

From: syzbot ci <syzbot+ci7bf...@syzkaller.appspotmail.com> Date: Thu, 26 Feb 2026 09

2:15 PM

1:55 PM

Re: [syzbot] [netfilter?] WARNING in __nf_unregister_net_hook (9)

Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by

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Re: [syzbot] [netfilter?] WARNING in __nf_unregister_net_hook (9)

Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by

1:55 PM

syzbot ci, … syzbot ci8

1:42 PM

[syzbot ci] Re: Close race in freeing special fields and map value

Unknown command

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[syzbot ci] Re: Close race in freeing special fields and map value

Unknown command

1:42 PM

Mauricio Faria de Oliveira, syzbot6

1:25 PM

KASAN: slab-use-after-free Write in media_request_alloc

#syz dup: KASAN: slab-use-after-free Write in number

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KASAN: slab-use-after-free Write in media_request_alloc

#syz dup: KASAN: slab-use-after-free Write in number

1:25 PM

syzbot, Will Deacon2

1:25 PM

[syzbot] [arm?] BUG: using __this_cpu_read() in preemptible code in __delay

On Thu, Feb 26, 2026 at 07:05:25AM -0800, syzbot wrote: > syzbot found the following issue on:

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[syzbot] [arm?] BUG: using __this_cpu_read() in preemptible code in __delay

On Thu, Feb 26, 2026 at 07:05:25AM -0800, syzbot wrote: > syzbot found the following issue on:

1:25 PM

syzbot, Pedro Falcato3

1:04 PM

[syzbot] [mm?] possible deadlock in lock_mm_and_find_vma (4)

On Thu, Feb 26, 2026 at 05:40:26PM +0000, Pedro Falcato wrote: > +Cc netdev, block, nbd people

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[syzbot] [mm?] possible deadlock in lock_mm_and_find_vma (4)

On Thu, Feb 26, 2026 at 05:40:26PM +0000, Pedro Falcato wrote: > +Cc netdev, block, nbd people

1:04 PM

syzbot, … Steven Rostedt8

11:52 AM

[syzbot] [trace?] WARNING in tracing_buffers_mmap_close (3)

On Thu, 26 Feb 2026 17:16:57 +0800 Qing Wang <wangqi...@gmail.com> wrote: > #syz test

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[syzbot] [trace?] WARNING in tracing_buffers_mmap_close (3)

On Thu, 26 Feb 2026 17:16:57 +0800 Qing Wang <wangqi...@gmail.com> wrote: > #syz test

11:52 AM

11:39 AM

[syzbot] [netfilter?] WARNING in __nf_unregister_net_hook (9)

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

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[syzbot] [netfilter?] WARNING in __nf_unregister_net_hook (9)

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

11:39 AM

Mauricio Faria de Oliveira, syzbot4

10:29 AM

KASAN: slab-use-after-free Write in number

Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by

unread,

KASAN: slab-use-after-free Write in number

Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by

10:29 AM

10:09 AM

[syzbot] [mm?] kernel BUG in qlist_free_all (3)

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

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[syzbot] [mm?] kernel BUG in qlist_free_all (3)

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

10:09 AM

9:54 AM

[syzbot] [rds?] possible deadlock in rds_tcp_tune (2)

Hello, syzbot found the following issue on: HEAD commit: 32a92f8c8932 Convert more 'alloc_obj

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[syzbot] [rds?] possible deadlock in rds_tcp_tune (2)

Hello, syzbot found the following issue on: HEAD commit: 32a92f8c8932 Convert more 'alloc_obj

9:54 AM

9:45 AM

[syzbot] [btrfs?] possible deadlock in btrfs_create_qgroup

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

unread,

[syzbot] [btrfs?] possible deadlock in btrfs_create_qgroup

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

9:45 AM

9:10 AM

[syzbot] [bpf?] [trace?] KASAN: slab-use-after-free Read in bpf_trace_run3 (2)

Hello, syzbot found the following issue on: HEAD commit: 32a92f8c8932 Convert more 'alloc_obj

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[syzbot] [bpf?] [trace?] KASAN: slab-use-after-free Read in bpf_trace_run3 (2)

Hello, syzbot found the following issue on: HEAD commit: 32a92f8c8932 Convert more 'alloc_obj

9:10 AM

7:59 AM

[syzbot] Monthly wpan report (Feb 2026)

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

unread,

[syzbot] Monthly wpan report (Feb 2026)

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

7:59 AM

7:58 AM

[syzbot] Monthly hams report (Feb 2026)

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

unread,

[syzbot] Monthly hams report (Feb 2026)

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

7:58 AM

7:58 AM

[syzbot] Monthly netfilter report (Feb 2026)

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

unread,

[syzbot] Monthly netfilter report (Feb 2026)

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

7:58 AM

7:58 AM

[syzbot] Monthly jfs report (Feb 2026)

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

unread,

[syzbot] Monthly jfs report (Feb 2026)

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

7:58 AM

7:58 AM

[syzbot] Monthly kernfs report (Feb 2026)

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

unread,

[syzbot] Monthly kernfs report (Feb 2026)

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

7:58 AM

syzbot, … Hillf Danton26

5:50 AM

[syzbot] [kernel?] INFO: task hung in restrict_one_thread_callback

Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by

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[syzbot] [kernel?] INFO: task hung in restrict_one_thread_callback

Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by

5:50 AM

4:36 AM

[syzbot] [ext4?] INFO: task hung in block_read_full_folio (3)

syzbot has found a reproducer for the following issue on: HEAD commit: d9d32e5bd5a4 Merge tag '

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[syzbot] [ext4?] INFO: task hung in block_read_full_folio (3)

syzbot has found a reproducer for the following issue on: HEAD commit: d9d32e5bd5a4 Merge tag '

4:36 AM

3:31 AM

[syzbot] [serial?] KASAN: slab-out-of-bounds Write in do_con_write (3)

Hello, syzbot found the following issue on: HEAD commit: d9d32e5bd5a4 Merge tag 'ata-7.0-rc2'

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[syzbot] [serial?] KASAN: slab-out-of-bounds Write in do_con_write (3)

Hello, syzbot found the following issue on: HEAD commit: d9d32e5bd5a4 Merge tag 'ata-7.0-rc2'

3:31 AM

1:18 AM

[syzbot] [f2fs?] INFO: task hung in f2fs_fallocate (6)

Hello, syzbot found the following issue on: HEAD commit: d4906ae14a5f Add linux-next specific files

unread,

[syzbot] [f2fs?] INFO: task hung in f2fs_fallocate (6)

Hello, syzbot found the following issue on: HEAD commit: d4906ae14a5f Add linux-next specific files

1:18 AM

1:07 AM

[syzbot] [kernfs?] possible deadlock in __kernfs_remove (3)

Hello, syzbot found the following issue on: HEAD commit: d4f687fbbce4 ovpn: tcp - fix packet

unread,

[syzbot] [kernfs?] possible deadlock in __kernfs_remove (3)

Hello, syzbot found the following issue on: HEAD commit: d4f687fbbce4 ovpn: tcp - fix packet

1:07 AM

12:20 AM

[syzbot] [bpf?] linux-next test error: WARNING: kmalloc bug in bpf_prog_alloc_no_stats

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

unread,

[syzbot] [bpf?] linux-next test error: WARNING: kmalloc bug in bpf_prog_alloc_no_stats

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

12:20 AM

Feb 25

[syzbot] [net?] [virt?] [kvm?] BUG: soft lockup in vsock_loopback_work

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

unread,

[syzbot] [net?] [virt?] [kvm?] BUG: soft lockup in vsock_loopback_work

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

Feb 25

Feb 25

[syzbot] [wireless?] WARNING in ieee80211_set_active_links (3)

Hello, syzbot found the following issue on: HEAD commit: 7dff99b35460 Remove WARN_ALL_UNSEEDED_RANDOM

unread,

[syzbot] [wireless?] WARNING in ieee80211_set_active_links (3)

Hello, syzbot found the following issue on: HEAD commit: 7dff99b35460 Remove WARN_ALL_UNSEEDED_RANDOM

Feb 25

syzbot, … Sean Christopherson4

Feb 25

[syzbot] [kvm?] WARNING in kvm_read_guest_offset_cached

On Tue, Feb 10, 2026, Alexander Potapenko wrote: > On Wed, Jul 16, 2025 at 5:23 PM 'Sean

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[syzbot] [kvm?] WARNING in kvm_read_guest_offset_cached

On Tue, Feb 10, 2026, Alexander Potapenko wrote: > On Wed, Jul 16, 2025 at 5:23 PM 'Sean

Feb 25

Feb 25

[syzbot] [wireless?] WARNING in ieee80211_teardown_sdata (2)

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

unread,

[syzbot] [wireless?] WARNING in ieee80211_teardown_sdata (2)

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

Feb 25

Feb 25

Re: [syzbot] [jfs?] general protection fault in lmLogSync (2)

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

unread,

Re: [syzbot] [jfs?] general protection fault in lmLogSync (2)

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

Feb 25

Feb 25

[syzbot] general protection fault in lmLogSync (2)

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

unread,

[syzbot] general protection fault in lmLogSync (2)

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

Feb 25

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