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

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syzbot, … Andrew Morton6

12:34 PM

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

On Mon, 20 Apr 2026 15:29:00 -0400 "Liam R. Howlett" <Liam.H...@oracle.com> wrote:

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

On Mon, 20 Apr 2026 15:29:00 -0400 "Liam R. Howlett" <Liam.H...@oracle.com> wrote:

12:34 PM

12:33 PM

Re: [syzbot] [bridge?] possible deadlock in br_multicast_rcv (3)

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

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Re: [syzbot] [bridge?] possible deadlock in br_multicast_rcv (3)

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

12:33 PM

syzbot, Alan Stern2

12:11 PM

Re: INFO: rcu detected stall in dummy_timer (3)

On Thu, Apr 23, 2026 at 09:05:38AM -0700, syzbot wrote: > > I'm revisiting an old syzbot

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Re: INFO: rcu detected stall in dummy_timer (3)

On Thu, Apr 23, 2026 at 09:05:38AM -0700, syzbot wrote: > > I'm revisiting an old syzbot

12:11 PM

syzbot, Hillf Danton5

12:10 PM

[syzbot] possible deadlock in br_multicast_rcv (3)

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

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[syzbot] possible deadlock in br_multicast_rcv (3)

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

12:10 PM

syzbot, … Konstantin Komarov3

11:14 AM

[syzbot] [iomap?] WARNING in iomap_zero_range

On 4/21/26 16:57, Brian Foster wrote: > cc Konstantin, ntfs3 list > > On Fri, Apr 17, 2026

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[syzbot] [iomap?] WARNING in iomap_zero_range

On 4/21/26 16:57, Brian Foster wrote: > cc Konstantin, ntfs3 list > > On Fri, Apr 17, 2026

11:14 AM

11:02 AM

[syzbot] [net?] general protection fault in kernel_sock_shutdown (4)

Hello, syzbot found the following issue on: HEAD commit: 6596a02b2078 Merge tag 'drm-next-2026-04

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[syzbot] [net?] general protection fault in kernel_sock_shutdown (4)

Hello, syzbot found the following issue on: HEAD commit: 6596a02b2078 Merge tag 'drm-next-2026-04

11:02 AM

10:40 AM

[syzbot] [mm?] INFO: task hung in rmap_walk_file

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

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[syzbot] [mm?] INFO: task hung in rmap_walk_file

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

10:40 AM

9:57 AM

[syzbot] [mm?] KASAN: use-after-free Read in copy_folio_from_iter_atomic (2)

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

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[syzbot] [mm?] KASAN: use-after-free Read in copy_folio_from_iter_atomic (2)

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

9:57 AM

9:23 AM

[syzbot] [hams?] WARNING: ODEBUG bug in rose_release

Hello, syzbot found the following issue on: HEAD commit: 2a4c0c11c019 Merge tag 's390-7.1-1'

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[syzbot] [hams?] WARNING: ODEBUG bug in rose_release

Hello, syzbot found the following issue on: HEAD commit: 2a4c0c11c019 Merge tag 's390-7.1-1'

9:23 AM

9:23 AM

[syzbot] [net?] WARNING: refcount bug in sk_common_release (2)

Hello, syzbot found the following issue on: HEAD commit: 2a4c0c11c019 Merge tag 's390-7.1-1'

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[syzbot] [net?] WARNING: refcount bug in sk_common_release (2)

Hello, syzbot found the following issue on: HEAD commit: 2a4c0c11c019 Merge tag 's390-7.1-1'

9:23 AM

8:44 AM

[syzbot] Monthly virt report (Apr 2026)

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

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[syzbot] Monthly virt report (Apr 2026)

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

8:44 AM

Greg KH, … Greg KH5

7:53 AM

Re: [PATCH 5.15.y] ocfs2: fix shift-out-of-bounds UBSAN bug in ocfs2_verify_volume

On Tue, Mar 24, 2026 at 08:51:42AM +0000, 10163...@qq.com wrote: > This patch is a backport to

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Re: [PATCH 5.15.y] ocfs2: fix shift-out-of-bounds UBSAN bug in ocfs2_verify_volume

On Tue, Mar 24, 2026 at 08:51:42AM +0000, 10163...@qq.com wrote: > This patch is a backport to

7:53 AM

6:49 AM

[syzbot] [ocfs2?] UBSAN: array-index-out-of-bounds in ocfs2_grow_tree (2)

Hello, syzbot found the following issue on: HEAD commit: faeab166167f Merge tag 'pinctrl-v7.1-1

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[syzbot] [ocfs2?] UBSAN: array-index-out-of-bounds in ocfs2_grow_tree (2)

Hello, syzbot found the following issue on: HEAD commit: faeab166167f Merge tag 'pinctrl-v7.1-1

6:49 AM

syzbot ci, Jan Kara2

4:53 AM

[syzbot ci] Re: fs: Handle multiply claimed blocks more gracefully with mmb

On Thu 23-04-26 00:14:45, syzbot ci wrote: > syzbot ci has tested the following series > > [

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[syzbot ci] Re: fs: Handle multiply claimed blocks more gracefully with mmb

On Thu 23-04-26 00:14:45, syzbot ci wrote: > syzbot ci has tested the following series > > [

4:53 AM

syzbot, Jie Wang11

3:12 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_v5

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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_v5

3:12 AM

12:15 AM

Re: [PATCH] wifi: rsi: fix kthread lifetime race between self-exit and external-stop

On Thu, 23 Apr 2026 02:38:46 +0900 Jeongjun Park wrote: > RSI driver use both self-exit(

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Re: [PATCH] wifi: rsi: fix kthread lifetime race between self-exit and external-stop

On Thu, 23 Apr 2026 02:38:46 +0900 Jeongjun Park wrote: > RSI driver use both self-exit(

12:15 AM

Apr 22

[syzbot] [wireless?] WARNING in ieee80211_do_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] [wireless?] WARNING in ieee80211_do_stop (3)

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

Apr 22

Deepanshu Kartikey, … Morduan Zang5

Apr 22

Re: [PATCH] net: phonet: do not BUG_ON() in pn_socket_autobind() on failed bind

syzbot reported a kernel BUG triggered from pn_socket_sendmsg() via pn_socket_autobind(): kernel BUG

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Re: [PATCH] net: phonet: do not BUG_ON() in pn_socket_autobind() on failed bind

syzbot reported a kernel BUG triggered from pn_socket_sendmsg() via pn_socket_autobind(): kernel BUG

Apr 22

Apr 22

[syzbot] [net?] KCSAN: data-race in __udp4_lib_mcast_deliver / udp_lib_unhash (3)

Hello, syzbot found the following issue on: HEAD commit: c23719abc330 Merge tag 'x86-urgent-2026-

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[syzbot] [net?] KCSAN: data-race in __udp4_lib_mcast_deliver / udp_lib_unhash (3)

Hello, syzbot found the following issue on: HEAD commit: c23719abc330 Merge tag 'x86-urgent-2026-

Apr 22

Morduan Zang, … Michal Pecio5

Apr 22

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

From: Zhan Jun <zha...@uniontech.com> syzbot reported a KASAN slab-use-after-free read in

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

From: Zhan Jun <zha...@uniontech.com> syzbot reported a KASAN slab-use-after-free read in

Apr 22

syzbot, … Sean Christopherson6

Apr 22

[syzbot] [kvm?] INFO: task hung in kvm_swap_active_memslots (2)

On Mon, Nov 17, 2025, Sean Christopherson wrote: > On Mon, Nov 17, 2025, Alexander Potapenko wrote

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[syzbot] [kvm?] INFO: task hung in kvm_swap_active_memslots (2)

On Mon, Nov 17, 2025, Sean Christopherson wrote: > On Mon, Nov 17, 2025, Alexander Potapenko wrote

Apr 22

Apr 22

[syzbot] [ext4?] WARNING in jbd2_journal_dirty_metadata (3)

Hello, syzbot found the following issue on: HEAD commit: eb5249b12507 Merge tag 'parisc-for-7.1-

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[syzbot] [ext4?] WARNING in jbd2_journal_dirty_metadata (3)

Hello, syzbot found the following issue on: HEAD commit: eb5249b12507 Merge tag 'parisc-for-7.1-

Apr 22

Apr 22

Re: [syzbot] [usb?] KASAN: slab-out-of-bounds Read in usbtmc_interrupt

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

unread,

Re: [syzbot] [usb?] KASAN: slab-out-of-bounds Read in usbtmc_interrupt

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

Apr 22

syzbot, Hillf Danton14

Apr 22

[syzbot] [usb?] KASAN: slab-out-of-bounds Read in usbtmc_interrupt

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

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[syzbot] [usb?] KASAN: slab-out-of-bounds Read in usbtmc_interrupt

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

Apr 22

Apr 22

[syzbot] [i2c?] WARNING: refcount bug in i2c_get_adapter (2)

Hello, syzbot found the following issue on: HEAD commit: e753c16cb3dd Merge tag 'spi-fix-v7.0-rc7

unread,

[syzbot] [i2c?] WARNING: refcount bug in i2c_get_adapter (2)

Hello, syzbot found the following issue on: HEAD commit: e753c16cb3dd Merge tag 'spi-fix-v7.0-rc7

Apr 22

Apr 22

Re: [syzbot] [usb?] WARNING in ADDR_ctrl_msg/usb_submit_urb

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

unread,

Re: [syzbot] [usb?] WARNING in ADDR_ctrl_msg/usb_submit_urb

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

Apr 22

Apr 22

[syzbot] [usb?] WARNING in ADDR_ctrl_msg/usb_submit_urb

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

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[syzbot] [usb?] WARNING in ADDR_ctrl_msg/usb_submit_urb

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

Apr 22

syzbot, … Viacheslav Dubeyko15

Apr 22

[syzbot] [hfs?] memory leak in __hfs_bnode_create

On Sat, 2026-04-18 at 17:37 +0800, Edward Adam Davis wrote: > On Fri, 17 Apr 2026 15:03:17 -0700,

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[syzbot] [hfs?] memory leak in __hfs_bnode_create

On Sat, 2026-04-18 at 17:37 +0800, Edward Adam Davis wrote: > On Fri, 17 Apr 2026 15:03:17 -0700,

Apr 22

Apr 22

Re: [syzbot] [serial?] memory leak in gsm_activate_mux

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

unread,

Re: [syzbot] [serial?] memory leak in gsm_activate_mux

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

Apr 22

syzbot, … Edward AD26

Apr 22

[syzbot] [serial?] memory leak in gsm_activate_mux

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

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[syzbot] [serial?] memory leak in gsm_activate_mux

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

Apr 22

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