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

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11:58 AM

[syzbot] [kvm-x86?] KASAN: use-after-free Read in kvm_setup_guest_pvclock

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[syzbot] [kvm-x86?] KASAN: use-after-free Read in kvm_setup_guest_pvclock

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11:58 AM

11:42 AM

[syzbot] [wireless?] INFO: rcu detected stall in sock_close (5)

syzbot has found a reproducer for the following issue on: HEAD commit: 248951ddc14d Merge tag '

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[syzbot] [wireless?] INFO: rcu detected stall in sock_close (5)

syzbot has found a reproducer for the following issue on: HEAD commit: 248951ddc14d Merge tag '

11:42 AM

11:37 AM

[syzbot] [autofs?] possible deadlock in anon_pipe_write (2)

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

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[syzbot] [autofs?] possible deadlock in anon_pipe_write (2)

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

11:37 AM

syzbot, … Konstantin Komarov4

10:25 AM

[syzbot] [iomap?] WARNING in iomap_zero_range

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

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[syzbot] [iomap?] WARNING in iomap_zero_range

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

10:25 AM

9:20 AM

[syzbot ci] Re: arch, mm: create a generic set_memory/change_page_attr core

syzbot ci has tested the following series [v1] arch, mm: create a generic set_memory/change_page_attr

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[syzbot ci] Re: arch, mm: create a generic set_memory/change_page_attr core

syzbot ci has tested the following series [v1] arch, mm: create a generic set_memory/change_page_attr

9:20 AM

syzbot, … Hillf Danton3

8:56 AM

[syzbot] [mm?] INFO: rcu detected stall in unmap_region

On Wed, 22 Jul 2026 10:14:16 +0300 Nikolay Ivchenko wrote: > On syzbot report, syzbot wrote: >

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[syzbot] [mm?] INFO: rcu detected stall in unmap_region

On Wed, 22 Jul 2026 10:14:16 +0300 Nikolay Ivchenko wrote: > On syzbot report, syzbot wrote: >

8:56 AM

6:23 AM

[syzbot] [kernel?] INFO: rcu detected stall in kthread (6)

Hello, syzbot found the following issue on: HEAD commit: af5e34a41cd6 Merge tag 'mtd/fixes-for-

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[syzbot] [kernel?] INFO: rcu detected stall in kthread (6)

Hello, syzbot found the following issue on: HEAD commit: af5e34a41cd6 Merge tag 'mtd/fixes-for-

6:23 AM

4:56 AM

[syzbot] [nilfs?] INFO: task hung in nilfs_transaction_begin (3)

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

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[syzbot] [nilfs?] INFO: task hung in nilfs_transaction_begin (3)

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

4:56 AM

syzbot ci, Krystian Kaniewski2

2:36 AM

[syzbot ci] Re: ocfs2: fix circular locking dependency in ocfs2_init_acl()

V4 correctly moves the parent default ACL lookup and ACL derivation before allocator reservation and

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[syzbot ci] Re: ocfs2: fix circular locking dependency in ocfs2_init_acl()

V4 correctly moves the parent default ACL lookup and ACL derivation before allocator reservation and

2:36 AM

syzbot ci, Krystian Kaniewski2

2:36 AM

[syzbot ci] Re: nbd: skip queue limits update for size-only reconfigure

Please generate a v3 patch for syzbot issue f272bbfbf8498ddadea5, `INFO: task hung in

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[syzbot ci] Re: nbd: skip queue limits update for size-only reconfigure

Please generate a v3 patch for syzbot issue f272bbfbf8498ddadea5, `INFO: task hung in

2:36 AM

12:32 AM

[syzbot] Monthly tipc report (Jul 2026)

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

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[syzbot] Monthly tipc report (Jul 2026)

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

12:32 AM

syzbot, … NeilBrown5

Jul 21

[syzbot] [nfs?] INFO: task hung in nfsd_nl_cache_flush_doit

On Wed, 22 Jul 2026, Jeff Layton wrote: > On Wed, 2026-07-22 at 07:48 +1000, NeilBrown wrote: >

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[syzbot] [nfs?] INFO: task hung in nfsd_nl_cache_flush_doit

On Wed, 22 Jul 2026, Jeff Layton wrote: > On Wed, 2026-07-22 at 07:48 +1000, NeilBrown wrote: >

Jul 21

Jul 21

[syzbot] Monthly fbdev report (Jul 2026)

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

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[syzbot] Monthly fbdev report (Jul 2026)

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

Jul 21

syzbot, Roberto A. Foglietta3

Jul 21

[syzbot] [kernel?] INFO: task hung in rxrpc_destroy_all_connections (5)

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 rxrpc_destroy_all_connections (5)

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

Jul 21

syzbot, … Lorenzo Stoakes (ARM)11

Jul 21

[syzbot] [kernel?] linux-next test error: WARNING: locking bug in change_page_attr_set_clr

On Tue, Jul 21, 2026 at 08:05:47AM -0700, Borislav Petkov wrote: > On Tue, Jul 21, 2026 at 03:03:

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[syzbot] [kernel?] linux-next test error: WARNING: locking bug in change_page_attr_set_clr

On Tue, Jul 21, 2026 at 08:05:47AM -0700, Borislav Petkov wrote: > On Tue, Jul 21, 2026 at 03:03:

Jul 21

syzbot, … Alan Stern13

Jul 21

[syzbot] [media?] [usb?] WARNING in smsusb_init_device/usb_submit_urb

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

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[syzbot] [media?] [usb?] WARNING in smsusb_init_device/usb_submit_urb

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Jul 21

syzbot ci, syzbot ci3

Jul 21

[syzbot ci] Re: kcov: fix data corruption and race conditions on PREEMPT_RT by moving saved remote state to task_struct (v7)

syzbot ci has tested the following series [v7] kcov: fix data corruption and race conditions on

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[syzbot ci] Re: kcov: fix data corruption and race conditions on PREEMPT_RT by moving saved remote state to task_struct (v7)

syzbot ci has tested the following series [v7] kcov: fix data corruption and race conditions on

Jul 21

Jul 21

Re: [syzbot] [kvm-x86?] KASAN: use-after-free Read in kvm_setup_guest_pvclock

Hello, syzbot tried to test the proposed patch but the build/boot failed: 0000:00:00.0: Limiting

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Re: [syzbot] [kvm-x86?] KASAN: use-after-free Read in kvm_setup_guest_pvclock

Hello, syzbot tried to test the proposed patch but the build/boot failed: 0000:00:00.0: Limiting

Jul 21

Jul 21

[syzbot ci] Re: mm/khugepaged: collapse_file() cleanups

syzbot ci has tested the following series [v1] mm/khugepaged: collapse_file() cleanups https://lore.

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[syzbot ci] Re: mm/khugepaged: collapse_file() cleanups

syzbot ci has tested the following series [v1] mm/khugepaged: collapse_file() cleanups https://lore.

Jul 21

Jul 21

[syzbot ci] Re: fuse: abort connection on /dev/fuse flush to prevent deadlock

syzbot ci has tested the following series [v3] fuse: abort connection on /dev/fuse flush to prevent

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[syzbot ci] Re: fuse: abort connection on /dev/fuse flush to prevent deadlock

syzbot ci has tested the following series [v3] fuse: abort connection on /dev/fuse flush to prevent

Jul 21

Jul 21

[PATCH] drm/vkms: Advertise PREMULTI blend mode

#syz test Since we only support pre-multiplied alpha blend mode, advertise that. Signed-off-by:

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[PATCH] drm/vkms: Advertise PREMULTI blend mode

#syz test Since we only support pre-multiplied alpha blend mode, advertise that. Signed-off-by:

Jul 21

syzbot, Hillf Danton3

Jul 21

[syzbot] [bluetooth?] KASAN: null-ptr-deref Read in l2cap_chan_hold_unless_zero

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

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[syzbot] [bluetooth?] KASAN: null-ptr-deref Read in l2cap_chan_hold_unless_zero

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

Jul 21

Jul 20

[syzbot] [crypto?] possible deadlock in __alloc_workqueue (3)

Hello, syzbot found the following issue on: HEAD commit: f6f3b36c15ed net: ethernet: qualcomm: remove

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[syzbot] [crypto?] possible deadlock in __alloc_workqueue (3)

Hello, syzbot found the following issue on: HEAD commit: f6f3b36c15ed net: ethernet: qualcomm: remove

Jul 20

Jul 20

[syzbot] [jfs?] possible deadlock in jfs_commit_inode

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

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[syzbot] [jfs?] possible deadlock in jfs_commit_inode

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

Jul 20

Jul 20

[syzbot] [mm?] WARNING in __put_task_struct (6)

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

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[syzbot] [mm?] WARNING in __put_task_struct (6)

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

Jul 20

Ryusuke Konishi

Jul 20

[PATCH] nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch

Syzbot reported a kernel BUG triggered within nilfs_copy_dirty_pages(), which copies dirty DAT file

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[PATCH] nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch

Syzbot reported a kernel BUG triggered within nilfs_copy_dirty_pages(), which copies dirty DAT file

Jul 20

Jul 20

[syzbot ci] Re: sctp: socket: refactor sctp_skb_recv_datagram to use ERR_PTR

syzbot ci has tested the following series [v4] sctp: socket: refactor sctp_skb_recv_datagram to use

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[syzbot ci] Re: sctp: socket: refactor sctp_skb_recv_datagram to use ERR_PTR

syzbot ci has tested the following series [v4] sctp: socket: refactor sctp_skb_recv_datagram to use

Jul 20

Jul 20

[syzbot] go runtime error

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[syzbot] go runtime error

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Jul 20

syzbot, Nikita Zhandarovich4

Jul 20

WARNING in smsusb_start_streaming/usb_submit_urb

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WARNING in smsusb_start_streaming/usb_submit_urb

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Jul 20

Jul 20

[syzbot] [input?] [usb?] WARNING in cm109_urb_irq_callback

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[syzbot] [input?] [usb?] WARNING in cm109_urb_irq_callback

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Jul 20

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