syzbot

 sign-in | mailing list | source | docs | 🏰
🐞 Open [1339]
≡ Subsystems
🐞 Fixed [7118]
🐞 Invalid [18800]
⬇ Missing Backports [220]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
✨ AI
💬 Send us feedback

WARNING in poll_select_finish

Status: upstream: reported syz repro on 2024/11/28 09:07
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+15f68436afaf0cc3af11@syzkaller.appspotmail.com
First crash: 548d, last: 168d
▶ ▼ ✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
671636a7-d64d-4706-bc52-422e9413ccb6 assessment-security 💥 WARNING in poll_select_finish 2026/05/19 23:17 2026/05/19 23:17 2026/05/19 23:17 1d9407ad5a662c921fc0d659cf022b438c0bde91 failed to run ["git" "-c" "core.hooksPath=/dev/null" "fetch" "--force" "--tags" "433dfd5a8a5d80bbf0669b14e9ed908911a52dd6" "7b1d1d4cfac0c525f7e13ef802814171d1fe540c"]: exit status 128 fatal: remote error: upload-pack: not our ref 7b1d1d4cfac0c525f7e13ef802814171d1fe540c
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] WARNING in poll_select_finish 0 (1) 2024/11/28 09:07
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/04/28 04:33 45m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/04/28 04:33 35m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/04/14 23:28 3h46m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/16 20:29 2h44m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/16 20:29 28m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/03 16:53 30m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2025/12/22 20:00 53m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci OK log
2025/12/22 19:22 20m retest repro upstream OK log
2025/12/22 18:55 20m retest repro upstream OK log
2025/12/08 16:46 30m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6595 at include/linux/sched/signal.h:548 restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline]
WARNING: CPU: 0 PID: 6595 at include/linux/sched/signal.h:548 poll_select_finish+0x71c/0x7e0 fs/select.c:301
Modules linked in:
CPU: 0 UID: 0 PID: 6595 Comm: syz.0.15 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline]
pc : poll_select_finish+0x71c/0x7e0 fs/select.c:301
lr : restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline]
lr : poll_select_finish+0x71c/0x7e0 fs/select.c:301
sp : ffff8000a02e7b20
x29: ffff8000a02e7c20 x28: dfff800000000000 x27: 0000000000000000
x26: ffff70001405cf6c x25: 0000000000000002 x24: ffff8000a02e7ce0
x23: 0000000000000008 x22: ffff8000a02e7ba0 x21: ffff0000d55cbc80
x20: 0000000000000008 x19: 00000000fffffdfe x18: 1fffe000366c6876
x17: ffff80008f81d000 x16: ffff80008b3edfc8 x15: 0000000000000002
x14: 1ffff0001405cf74 x13: 0000000000000000 x12: 0000000000000000
x11: ffff70001405cf76 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000d55cbc80 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline] (P)
 poll_select_finish+0x71c/0x7e0 fs/select.c:301 (P)
 restore_saved_sigmask_unless include/linux/sched/signal.h:548 [inline] (L)
 poll_select_finish+0x71c/0x7e0 fs/select.c:301 (L)
 __do_sys_ppoll fs/select.c:1122 [inline]
 __se_sys_ppoll fs/select.c:1101 [inline]
 __arm64_sys_ppoll+0x2d8/0x358 fs/select.c:1101
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 796
hardirqs last  enabled at (795): [<ffff80008b4b56a4>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (795): [<ffff80008b4b56a4>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (796): [<ffff80008b4b302c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (752): [<ffff80008002f3d8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (750): [<ffff80008002f3a4>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/24 12:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in poll_select_finish
2024/11/24 11:38 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in poll_select_finish
2024/11/24 09:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in poll_select_finish
2025/04/30 23:41 upstream b6ea1680d0ac 937aafd7 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root WARNING in poll_select_finish
2025/04/30 20:22 upstream b6ea1680d0ac 937aafd7 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root WARNING in poll_select_finish
2024/11/24 10:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in poll_select_finish
2024/11/24 09:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 7b1d1d4cfac0 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in poll_select_finish
* Struck through repros no longer work on HEAD.