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

Nobody is reading this list per se. See this article on reporting kernel bugs.

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syzbot, Kohei Enju3

3:03 PM

[syzbot] [kvm?] [net?] [virt?] BUG: sleeping function called from invalid context in vhost_get_avail_idx

Hello, syzbot tried to test the proposed patch but the build/boot failed: failed to copy syz-execprog

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[syzbot] [kvm?] [net?] [virt?] BUG: sleeping function called from invalid context in vhost_get_avail_idx

Hello, syzbot tried to test the proposed patch but the build/boot failed: failed to copy syz-execprog

3:03 PM

syzbot, Jeongjun Park5

2:41 PM

[syzbot] [net?] [nfs?] KASAN: slab-out-of-bounds Read in cache_seq_start_rcu

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

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[syzbot] [net?] [nfs?] KASAN: slab-out-of-bounds Read in cache_seq_start_rcu

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

2:41 PM

12:13 PM

[syzbot] [kernfs?] [bcachefs?] [exfat?] INFO: task hung in do_unlinkat (5)

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

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[syzbot] [kernfs?] [bcachefs?] [exfat?] INFO: task hung in do_unlinkat (5)

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

12:13 PM

11:35 AM

[syzbot] [net?] BUG: spinlock already unlocked in lec_atm_close

Hello, syzbot found the following issue on: HEAD commit: 1f5ffc672165 Fix mismerge of the arm64 /

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[syzbot] [net?] BUG: spinlock already unlocked in lec_atm_close

Hello, syzbot found the following issue on: HEAD commit: 1f5ffc672165 Fix mismerge of the arm64 /

11:35 AM

11:35 AM

[syzbot] [net?] kernel BUG in pn_socket_autobind

Hello, syzbot found the following issue on: HEAD commit: b4e07588e743 tracing: tell git to ignore the

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[syzbot] [net?] kernel BUG in pn_socket_autobind

Hello, syzbot found the following issue on: HEAD commit: b4e07588e743 tracing: tell git to ignore the

11:35 AM

11:34 AM

[syzbot] [sctp?] WARNING: refcount bug in sctp_association_hold

Hello, syzbot found the following issue on: HEAD commit: c1f49dea2b8f Merge tag 'mm-hotfixes-

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[syzbot] [sctp?] WARNING: refcount bug in sctp_association_hold

Hello, syzbot found the following issue on: HEAD commit: c1f49dea2b8f Merge tag 'mm-hotfixes-

11:34 AM

11:34 AM

[syzbot] [mm?] possible deadlock in rhashtable_free_and_destroy

Hello, syzbot found the following issue on: HEAD commit: 8541d8f725c6 Merge tag 'mtd/for-7.1'

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[syzbot] [mm?] possible deadlock in rhashtable_free_and_destroy

Hello, syzbot found the following issue on: HEAD commit: 8541d8f725c6 Merge tag 'mtd/for-7.1'

11:34 AM

syzbot, Brian Foster2

10:57 AM

[syzbot] [iomap?] WARNING in iomap_zero_range

cc Konstantin, ntfs3 list On Fri, Apr 17, 2026 at 07:31:20AM -0700, syzbot wrote: > Hello, >

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[syzbot] [iomap?] WARNING in iomap_zero_range

cc Konstantin, ntfs3 list On Fri, Apr 17, 2026 at 07:31:20AM -0700, syzbot wrote: > Hello, >

10:57 AM

syzbot, Tetsuo Handa2

9:56 AM

[syzbot] linux-next build error (25)

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[syzbot] linux-next build error (25)

9:56 AM

syzbot, Pedro Falcato2

9:30 AM

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

On Mon, Apr 20, 2026 at 02:36:21PM -0700, syzbot wrote: > Hello, > > syzbot found the

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

On Mon, Apr 20, 2026 at 02:36:21PM -0700, syzbot wrote: > Hello, > > syzbot found the

9:30 AM

Morduan Zang, Andrew Lunn2

8:32 AM

[PATCH] net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()

On Tue, Apr 21, 2026 at 07:04:12PM +0800, Morduan Zang wrote: > From: Zhan Jun <zhanjun@

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[PATCH] net: usb: rtl8150: fix use-after-free in rtl8150_start_xmit()

On Tue, Apr 21, 2026 at 07:04:12PM +0800, Morduan Zang wrote: > From: Zhan Jun <zhanjun@

8:32 AM

8:21 AM

Re: [BUG] ext4: BUG_ON in ext4_write_inline_data (fs/ext4/inline.c:240)

On Tue, Apr 21, 2026 at 07:32:43PM +0800, Zw Tang wrote: > This looks like an ext4 inline-data

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Re: [BUG] ext4: BUG_ON in ext4_write_inline_data (fs/ext4/inline.c:240)

On Tue, Apr 21, 2026 at 07:32:43PM +0800, Zw Tang wrote: > This looks like an ext4 inline-data

8:21 AM

syzbot, Jie Wang9

7:33 AM

[syzbot] [gfs2?] BUG: sleeping function called from invalid context in lockref_get_not_dead

#syz test: https://github.com/wangjie220704/linux.git fix/gfs2_quota_642d_v4

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[syzbot] [gfs2?] BUG: sleeping function called from invalid context in lockref_get_not_dead

#syz test: https://github.com/wangjie220704/linux.git fix/gfs2_quota_642d_v4

7:33 AM

syzbot, Mykyta Yatsenko2

7:33 AM

[syzbot] [bpf?] KCSAN: data-race in bpf_obj_memcpy / bpf_obj_memcpy

On 4/20/26 3:13 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: >

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[syzbot] [bpf?] KCSAN: data-race in bpf_obj_memcpy / bpf_obj_memcpy

On 4/20/26 3:13 PM, syzbot wrote: > Hello, > > syzbot found the following issue on: >

7:33 AM

syzbot, Tetsuo Handa2

7:10 AM

[syzbot] BUG: workqueue function usb_giveback_urb_bh changed kcov_mode from ADDR to NUM

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[syzbot] BUG: workqueue function usb_giveback_urb_bh changed kcov_mode from ADDR to NUM

7:10 AM

syzbot, Tetsuo Handa2

7:09 AM

[syzbot] [fuse?] linux-next test error: general protection fault in fuse_dev_alloc_install

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[syzbot] [fuse?] linux-next test error: general protection fault in fuse_dev_alloc_install

7:09 AM

syzbot, Tetsuo Handa2

7:07 AM

[syzbot] [fuse?] linux-next test error: WARNING in fuse_dev_install_with_pq

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[syzbot] [fuse?] linux-next test error: WARNING in fuse_dev_install_with_pq

7:07 AM

syzbot, Tetsuo Handa2

7:05 AM

[syzbot] [block?] general protection fault in lo_rw_aio

I confirmed that this NULL pointer dereference is triggered by __loop_clr_fd() clearing lo->

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[syzbot] [block?] general protection fault in lo_rw_aio

I confirmed that this NULL pointer dereference is triggered by __loop_clr_fd() clearing lo->

7:05 AM

syzbot, Lorenzo Stoakes3

6:23 AM

[syzbot] [mm?] WARNING in vma_mark_detached

On Tue, Apr 21, 2026 at 10:32:15AM +0100, Lorenzo Stoakes wrote: > I'll come up with a patch!

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[syzbot] [mm?] WARNING in vma_mark_detached

On Tue, Apr 21, 2026 at 10:32:15AM +0100, Lorenzo Stoakes wrote: > I'll come up with a patch!

6:23 AM

2:08 AM

[syzbot] Monthly input report (Apr 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 (Apr 2026)

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

2:08 AM

syzbot, Tetsuo Handa3

Apr 20

Re: [syzbot] [usb?] [pm?] WARNING in enable_work

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

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Re: [syzbot] [usb?] [pm?] WARNING in enable_work

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

Apr 20

Apr 20

[syzbot] [ocfs2?] WARNING in ocfs2_xa_remove_entry

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

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[syzbot] [ocfs2?] WARNING in ocfs2_xa_remove_entry

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

Apr 20

Apr 20

[syzbot] [net?] [usb?] KASAN: slab-use-after-free Read in rtl8150_start_xmit

Hello, syzbot found the following issue on: HEAD commit: c1f49dea2b8f Merge tag 'mm-hotfixes-

unread,

[syzbot] [net?] [usb?] KASAN: slab-use-after-free Read in rtl8150_start_xmit

Hello, syzbot found the following issue on: HEAD commit: c1f49dea2b8f Merge tag 'mm-hotfixes-

Apr 20

Apr 20

[syzbot] [i2c?] [usb?] WARNING: ODEBUG bug in i2c_device_remove (2)

Hello, syzbot found the following issue on: HEAD commit: c7275b05bc42 Add linux-next specific files

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[syzbot] [i2c?] [usb?] WARNING: ODEBUG bug in i2c_device_remove (2)

Hello, syzbot found the following issue on: HEAD commit: c7275b05bc42 Add linux-next specific files

Apr 20

Apr 20

[syzbot] [media?] WARNING in trace_suspend_resume/usb_submit_urb

Hello, syzbot found the following issue on: HEAD commit: 8541d8f725c6 Merge tag 'mtd/for-7.1'

unread,

[syzbot] [media?] WARNING in trace_suspend_resume/usb_submit_urb

Hello, syzbot found the following issue on: HEAD commit: 8541d8f725c6 Merge tag 'mtd/for-7.1'

Apr 20

syzbot, … Liam R. Howlett5

Apr 20

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

* Marco Elver <el...@google.com> [260417 20:26]: > On Sat, 18 Apr 2026 at 01:51, 'Liam R

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

* Marco Elver <el...@google.com> [260417 20:26]: > On Sat, 18 Apr 2026 at 01:51, 'Liam R

Apr 20

Apr 20

[syzbot ci] Re: mm/virtio: skip redundant zeroing of host-zeroed reported pages

syzbot ci has tested the following series [v2] mm/virtio: skip redundant zeroing of host-zeroed

unread,

[syzbot ci] Re: mm/virtio: skip redundant zeroing of host-zeroed reported pages

syzbot ci has tested the following series [v2] mm/virtio: skip redundant zeroing of host-zeroed

Apr 20

Apr 20

[syzbot] [pm?] WARNING in enable_work

For archival purposes, forwarding an incoming command email to syzkall...@googlegroups.com. ***

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[syzbot] [pm?] WARNING in enable_work

For archival purposes, forwarding an incoming command email to syzkall...@googlegroups.com. ***

Apr 20

syzbot ci, … syzbot ci3

Apr 20

[syzbot ci] Re: mm: improve folio refcount scalability

syzbot ci has tested the suggested fix patch on top of the following series: [v2] mm: improve folio

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[syzbot ci] Re: mm: improve folio refcount scalability

syzbot ci has tested the suggested fix patch on top of the following series: [v2] mm: improve folio

Apr 20

syzbot, Nikola Ivanov3

Apr 20

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

> #syz test This crash does not have a reproducer. I cannot test it.

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

> #syz test This crash does not have a reproducer. I cannot test it.

Apr 20

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