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

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1:38 PM

[syzbot] [ext4?] kernel BUG in ext4_ext_map_blocks

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

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[syzbot] [ext4?] kernel BUG in ext4_ext_map_blocks

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

1:38 PM

syzbot ci, Sean Christopherson2

1:20 PM

[syzbot ci] Re: KVM: x86: Unconditionally recompute CR8 intercept on PPR update

On Thu, Jun 11, 2026, syzbot ci wrote: > syzbot ci has tested the following series > > [v2]

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[syzbot ci] Re: KVM: x86: Unconditionally recompute CR8 intercept on PPR update

On Thu, Jun 11, 2026, syzbot ci wrote: > syzbot ci has tested the following series > > [v2]

1:20 PM

syzbot ci, … syzbot ci5

11:08 AM

[syzbot ci] Re: Implement a new generic pagewalk API

syzbot ci has tested the suggested fix patch on top of the following series: [v3] Implement a new

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[syzbot ci] Re: Implement a new generic pagewalk API

syzbot ci has tested the suggested fix patch on top of the following series: [v3] Implement a new

11:08 AM

xiaoblac, Toke Høiland-Jørgensen2

10:29 AM

[PATCH] wifi: ath9k: hif_usb: don't dereference hif_dev after re-arming firmware request

xiaoblac <teel...@gmail.com> writes: > From: Cheng Yongkang <teel...@gmail.com> >

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[PATCH] wifi: ath9k: hif_usb: don't dereference hif_dev after re-arming firmware request

xiaoblac <teel...@gmail.com> writes: > From: Cheng Yongkang <teel...@gmail.com> >

10:29 AM

syzbot, … Jay Vadayath8

9:14 AM

[syzbot] [mm?] KCSAN: data-race in mas_wr_store_entry / mtree_range_walk (2)

Hello, I am a security researcher and was able to independently reproduce this data race on an x86-64

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[syzbot] [mm?] KCSAN: data-race in mas_wr_store_entry / mtree_range_walk (2)

Hello, I am a security researcher and was able to independently reproduce this data race on an x86-64

9:14 AM

8:32 AM

[syzbot] Monthly xfs report (Jun 2026)

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

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[syzbot] Monthly xfs report (Jun 2026)

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

8:32 AM

6:30 AM

[syzbot] [mm?] kernel BUG in z3fold_page_migrate

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

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[syzbot] [mm?] kernel BUG in z3fold_page_migrate

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

6:30 AM

6:29 AM

[syzbot ci] Re: Data in direntry (dirdata) feature

syzbot ci has tested the following series [v2] Data in direntry (dirdata) feature https://lore.kernel

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[syzbot ci] Re: Data in direntry (dirdata) feature

syzbot ci has tested the following series [v2] Data in direntry (dirdata) feature https://lore.kernel

6:29 AM

6:27 AM

[syzbot] [net?] WARNING in call_rcu (3)

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

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[syzbot] [net?] WARNING in call_rcu (3)

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

6:27 AM

5:18 AM

[syzbot] [cgroups?] [mm?] WARNING in hrtick_start_fair

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

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[syzbot] [cgroups?] [mm?] WARNING in hrtick_start_fair

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

5:18 AM

syzbot, Edward Adam Davis4

4:58 AM

[syzbot] [bluetooth?] KASAN: slab-use-after-free Write in hci_conn_drop (3)

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

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[syzbot] [bluetooth?] KASAN: slab-use-after-free Write in hci_conn_drop (3)

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

4:58 AM

3:33 AM

[syzbot ci] Re: mm/huge_memory: do not add dropped split tail folios to LRU

syzbot ci has tested the following series [v1] mm/huge_memory: do not add dropped split tail folios

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[syzbot ci] Re: mm/huge_memory: do not add dropped split tail folios to LRU

syzbot ci has tested the following series [v1] mm/huge_memory: do not add dropped split tail folios

3:33 AM

wuyankun, Tetsuo Handa3

Jun 10

[PATCH] wifi: ath6kl: fix invalid workqueue flags in ath6kl_usb_create()

ath6kl_usb_create() currently creates ath6kl_wq with flags set to 0: alloc_workqueue("ath6kl_wq

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[PATCH] wifi: ath6kl: fix invalid workqueue flags in ath6kl_usb_create()

ath6kl_usb_create() currently creates ath6kl_wq with flags set to 0: alloc_workqueue("ath6kl_wq

Jun 10

syzbot, Pei Xiao2

Jun 10

[syzbot] [usb?] [input?] KMSAN: uninit-value in steam_register

The reply buffer in steam_get_serial() is allocated on the stack without initialization. In cases

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[syzbot] [usb?] [input?] KMSAN: uninit-value in steam_register

The reply buffer in steam_get_serial() is allocated on the stack without initialization. In cases

Jun 10

Jun 10

[syzbot] [ocfs2?] possible deadlock in ocfs2_extend_allocation

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

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[syzbot] [ocfs2?] possible deadlock in ocfs2_extend_allocation

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

Jun 10

syzbot, … Konstantin Komarov5

Jun 10

[syzbot] [ntfs3?] KMSAN: uninit-value in ni_seek_data_or_hole

On 5/26/26 10:08, Edward Adam Davis wrote: > The target VCN being sought was not found within runs

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[syzbot] [ntfs3?] KMSAN: uninit-value in ni_seek_data_or_hole

On 5/26/26 10:08, Edward Adam Davis wrote: > The target VCN being sought was not found within runs

Jun 10

syzbot, Jens Axboe3

Jun 10

[syzbot] [io-uring?] INFO: rcu detected stall in io_ring_exit_work (3)

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

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[syzbot] [io-uring?] INFO: rcu detected stall in io_ring_exit_work (3)

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

Jun 10

Jun 10

[syzbot ci] Re: ext4: move inline data cleanup to ext4_writepages to fix deadlock

syzbot ci has tested the following series [v1] ext4: move inline data cleanup to ext4_writepages to

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[syzbot ci] Re: ext4: move inline data cleanup to ext4_writepages to fix deadlock

syzbot ci has tested the following series [v1] ext4: move inline data cleanup to ext4_writepages to

Jun 10

syzbot, … Dmitry Vyukov35

Jun 10

[syzbot] [net?] INFO: task hung in new_device_store (5)

On Sat, 3 Jan 2026 at 15:00, Tetsuo Handa <penguin...@i-love.sakura.ne.jp> wrote: > >

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[syzbot] [net?] INFO: task hung in new_device_store (5)

On Sat, 3 Jan 2026 at 15:00, Tetsuo Handa <penguin...@i-love.sakura.ne.jp> wrote: > >

Jun 10

Jun 10

[syzbot] [net?] KASAN: slab-out-of-bounds Write in mini_qdisc_pair_swap

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

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[syzbot] [net?] KASAN: slab-out-of-bounds Write in mini_qdisc_pair_swap

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

Jun 10

Jun 10

[syzbot] [fbdev?] KASAN: slab-use-after-free Read in fb_mode_is_equal

Hello, syzbot found the following issue on: HEAD commit: 9154c4af7829 Merge tag 'mmc-v7.1-rc3

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[syzbot] [fbdev?] KASAN: slab-use-after-free Read in fb_mode_is_equal

Hello, syzbot found the following issue on: HEAD commit: 9154c4af7829 Merge tag 'mmc-v7.1-rc3

Jun 10

Jun 10

[syzbot] [net?] WARNING: refcount bug in nsim_fib_event_nb (3)

Hello, syzbot found the following issue on: HEAD commit: 6f3ed7fec72f Merge tag 'for-7.1/dm-fixes

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[syzbot] [net?] WARNING: refcount bug in nsim_fib_event_nb (3)

Hello, syzbot found the following issue on: HEAD commit: 6f3ed7fec72f Merge tag 'for-7.1/dm-fixes

Jun 10

Jun 10

[syzbot] Monthly ocfs2 report (Jun 2026)

Hello ocfs2 maintainers/developers, This is a 31-day syzbot report for the ocfs2 subsystem. All

unread,

[syzbot] Monthly ocfs2 report (Jun 2026)

Hello ocfs2 maintainers/developers, This is a 31-day syzbot report for the ocfs2 subsystem. All

Jun 10

Jun 10

[syzbot] Monthly f2fs report (Jun 2026)

Hello f2fs maintainers/developers, This is a 31-day syzbot report for the f2fs subsystem. All related

unread,

[syzbot] Monthly f2fs report (Jun 2026)

Hello f2fs maintainers/developers, This is a 31-day syzbot report for the f2fs subsystem. All related

Jun 10

Jun 10

[syzbot] [kernel?] INFO: task hung in rds_tcp_listen_stop (3)

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

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[syzbot] [kernel?] INFO: task hung in rds_tcp_listen_stop (3)

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

Jun 10

Jun 9

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

Hello, syzbot found the following issue on: HEAD commit: a87737435cfa Add linux-next specific files

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

Hello, syzbot found the following issue on: HEAD commit: a87737435cfa Add linux-next specific files

Jun 9

Jun 9

[syzbot] [kernel?] possible deadlock in worker_thread (4)

Hello, syzbot found the following issue on: HEAD commit: 33d8d8ec31b5 Merge tag 'input-for-v7.1-

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[syzbot] [kernel?] possible deadlock in worker_thread (4)

Hello, syzbot found the following issue on: HEAD commit: 33d8d8ec31b5 Merge tag 'input-for-v7.1-

Jun 9

Jun 9

[syzbot] [ocfs2?] possible deadlock in ocfs2_remove_inode (2)

syzbot has found a reproducer for the following issue on: HEAD commit: 2d3090a8aeb5 Merge tag 'v7

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[syzbot] [ocfs2?] possible deadlock in ocfs2_remove_inode (2)

syzbot has found a reproducer for the following issue on: HEAD commit: 2d3090a8aeb5 Merge tag 'v7

Jun 9

Jun 9

[syzbot] [ext4?] KASAN: use-after-free Read in ext4_xattr_list_entries (2)

Hello, syzbot found the following issue on: HEAD commit: 8e65320d91cd Merge tag 'drm-fixes-2026-

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[syzbot] [ext4?] KASAN: use-after-free Read in ext4_xattr_list_entries (2)

Hello, syzbot found the following issue on: HEAD commit: 8e65320d91cd Merge tag 'drm-fixes-2026-

Jun 9

Jun 9

[syzbot ci] Re: netfilter: ipset fixes, second batch

syzbot ci has tested the following series [v2] netfilter: ipset fixes, second batch https://lore.

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[syzbot ci] Re: netfilter: ipset fixes, second batch

syzbot ci has tested the following series [v2] netfilter: ipset fixes, second batch https://lore.

Jun 9

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