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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, … Ethan Yang7

6:01 AM

[syzbot] [kvm?] WARNING in kvm_read_guest_offset_cached

kvm_pv_enable_async_pf() updates vcpu->arch.apf.msr_en_val before initializing the APF data

unread,

[syzbot] [kvm?] WARNING in kvm_read_guest_offset_cached

kvm_pv_enable_async_pf() updates vcpu->arch.apf.msr_en_val before initializing the APF data

6:01 AM

2:13 AM

Re: [syzbot] KMSAN: uninit-value in follow_page_pte

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

unread,

Re: [syzbot] KMSAN: uninit-value in follow_page_pte

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

2:13 AM

syzbot, Edward Adam Davis2

Apr 2

[syzbot] [xfs?] KMSAN: uninit-value in xlog_verify_head

When the traditional algorithm fails to locate the log header, it triggers the uninitialized-value

unread,

[syzbot] [xfs?] KMSAN: uninit-value in xlog_verify_head

When the traditional algorithm fails to locate the log header, it triggers the uninitialized-value

Apr 2

Apr 2

[syzbot] [net?] [bpf?] WARNING in sock_map_destroy (3)

Hello, syzbot found the following issue on: HEAD commit: 1b237f190eb3 Linux 6.17-rc3 git tree:

unread,

[syzbot] [net?] [bpf?] WARNING in sock_map_destroy (3)

Hello, syzbot found the following issue on: HEAD commit: 1b237f190eb3 Linux 6.17-rc3 git tree:

Apr 2

Apr 2

[syzbot] [btrfs?] kernel BUG in submit_compressed_extents

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

unread,

[syzbot] [btrfs?] kernel BUG in submit_compressed_extents

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

Apr 2

syzbot ci, … Alexei Starovoitov3

Apr 2

[syzbot ci] Re: bpf: Prep patches for static stack liveness.

On Thu, Apr 2, 2026 at 5:53 AM syzbot ci <syzbot+ci5d1...@syzkaller.appspotmail.com>

unread,

[syzbot ci] Re: bpf: Prep patches for static stack liveness.

On Thu, Apr 2, 2026 at 5:53 AM syzbot ci <syzbot+ci5d1...@syzkaller.appspotmail.com>

Apr 2

Apr 2

[syzbot] [net?] [bpf?] KCSAN: data-race in __udp_enqueue_schedule_skb / sk_psock_drop

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

unread,

[syzbot] [net?] [bpf?] KCSAN: data-race in __udp_enqueue_schedule_skb / sk_psock_drop

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

Apr 2

syzbot, Joseph Qi3

Apr 2

[syzbot] [ocfs2?] KASAN: use-after-free Write in ocfs2_write_end_nolock

> > > On 4/2/26 6:40 PM, syzbot wrote: >> Hello, >> >> syzbot found the

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[syzbot] [ocfs2?] KASAN: use-after-free Write in ocfs2_write_end_nolock

> > > On 4/2/26 6:40 PM, syzbot wrote: >> Hello, >> >> syzbot found the

Apr 2

Apr 2

[syzbot] Monthly nilfs report (Apr 2026)

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

unread,

[syzbot] Monthly nilfs report (Apr 2026)

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

Apr 2

Apr 2

[syzbot] [media?] KASAN: slab-use-after-free Read in __vb2_queue_cancel

Hello, syzbot found the following issue on: HEAD commit: cbfffcca2bf0 Merge tag 'trace-v7.0-rc5

unread,

[syzbot] [media?] KASAN: slab-use-after-free Read in __vb2_queue_cancel

Hello, syzbot found the following issue on: HEAD commit: cbfffcca2bf0 Merge tag 'trace-v7.0-rc5

Apr 2

Apr 2

[syzbot] [jfs?] possible deadlock in jfs_commit_inode

Hello, syzbot found the following issue on: HEAD commit: 3b058d1aeeef Add linux-next specific files

unread,

[syzbot] [jfs?] possible deadlock in jfs_commit_inode

Hello, syzbot found the following issue on: HEAD commit: 3b058d1aeeef Add linux-next specific files

Apr 2

Apr 2

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

Hello, syzbot found the following issue on: HEAD commit: be762d8b6dd7 Merge tag 'hwmon-for-v7.0-

unread,

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

Hello, syzbot found the following issue on: HEAD commit: be762d8b6dd7 Merge tag 'hwmon-for-v7.0-

Apr 2

Apr 2

[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: WARNING

unread,

[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: WARNING

Apr 2

syzbot, Dmitry Vyukov3

Apr 1

[syzbot] [smc?] KCSAN: data-race in smc_switch_to_fallback / sock_poll (2)

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

unread,

[syzbot] [smc?] KCSAN: data-race in smc_switch_to_fallback / sock_poll (2)

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

Apr 1

Apr 1

[syzbot] [net?] KASAN: global-out-of-bounds Read in ip6gre_header

Hello, syzbot found the following issue on: HEAD commit: cf0d9080c6f7 Merge branch 'net-hsr-

unread,

[syzbot] [net?] KASAN: global-out-of-bounds Read in ip6gre_header

Hello, syzbot found the following issue on: HEAD commit: cf0d9080c6f7 Merge branch 'net-hsr-

Apr 1

syzbot, … Hillf Danton18

Apr 1

[syzbot] [fs?] KASAN: slab-use-after-free Read in lockref_get

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

unread,

[syzbot] [fs?] KASAN: slab-use-after-free Read in lockref_get

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

Apr 1

Apr 1

[syzbot] Monthly media report (Apr 2026)

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

unread,

[syzbot] Monthly media report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly hfs report (Apr 2026)

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

unread,

[syzbot] Monthly hfs report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly udf report (Apr 2026)

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

unread,

[syzbot] Monthly udf report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly btrfs report (Apr 2026)

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

unread,

[syzbot] Monthly btrfs report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly serial report (Apr 2026)

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

unread,

[syzbot] Monthly serial report (Apr 2026)

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

Apr 1

syzbot, … Lance Yang17

Apr 1

[syzbot] [mm?] WARNING in deferred_split_folio

On 2026/4/1 19:51, Lance Yang wrote: > > > On 2026/4/1 19:44, David Hildenbrand (Arm) wrote:

unread,

[syzbot] [mm?] WARNING in deferred_split_folio

On 2026/4/1 19:51, Lance Yang wrote: > > > On 2026/4/1 19:44, David Hildenbrand (Arm) wrote:

Apr 1

syzbot, Aleksandr Nogikh2

Apr 1

[syzbot] upstream build error (27)

#syz invalid On Wed, Apr 1, 2026 at 12:21 PM syzbot <syzbot+0a9d1b4f0640b4420708@syzkaller.

unread,

[syzbot] upstream build error (27)

#syz invalid On Wed, Apr 1, 2026 at 12:21 PM syzbot <syzbot+0a9d1b4f0640b4420708@syzkaller.

Apr 1

Apr 1

[syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in hiddev_disconnect (4)

Hello, syzbot found the following issue on: HEAD commit: 46b513250491 Merge tag 'v7.0-rc5-smb3-

unread,

[syzbot] [input?] [usb?] KASAN: slab-use-after-free Read in hiddev_disconnect (4)

Hello, syzbot found the following issue on: HEAD commit: 46b513250491 Merge tag 'v7.0-rc5-smb3-

Apr 1

Apr 1

[syzbot] Monthly wireless report (Apr 2026)

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

unread,

[syzbot] Monthly wireless report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly bluetooth report (Apr 2026)

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

unread,

[syzbot] Monthly bluetooth report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly usb report (Apr 2026)

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

unread,

[syzbot] Monthly usb report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly dri report (Apr 2026)

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

unread,

[syzbot] Monthly dri report (Apr 2026)

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

Apr 1

Apr 1

[syzbot] Monthly ntfs3 report (Apr 2026)

Hello ntfs3 maintainers/developers, This is a 31-day syzbot report for the ntfs3 subsystem. All

unread,

[syzbot] Monthly ntfs3 report (Apr 2026)

Hello ntfs3 maintainers/developers, This is a 31-day syzbot report for the ntfs3 subsystem. All

Apr 1

syzbot ci, Chi Zhiling2

Apr 1

[syzbot ci] Re: exfat: unify FAT chain walking helpers

On 3/31/26 11:27 PM, syzbot ci wrote: > syzbot ci has tested the following series > > [v1]

unread,

[syzbot ci] Re: exfat: unify FAT chain walking helpers

On 3/31/26 11:27 PM, syzbot ci wrote: > syzbot ci has tested the following series > > [v1]

Apr 1

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