syzbot

 sign-in | mailing list | source | docs
🐞 Open [322]
🐞 Fixed [2]
🐞 Invalid [1]
⬇ Missing Backports [9]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

kernel BUG in gfs2_glock_nq

Status: upstream: reported C repro on 2025/06/22 16:51
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+e41682c0c00227f58699@syzkaller.appspotmail.com
First crash: 69d, last: 19d
Fix commit to backport (bisect log) :
tree: upstream
commit ae9f3bd8259a0a8f67be2420e66bb05fbb95af48
Author: Andreas Gruenbacher <agruenba@redhat.com>
Date: Sat Apr 5 22:31:37 2025 +0000

  gfs2: replace sd_aspace with sd_inode

  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2025/06/25 linux-6.6.y (ToT) 6282921b6825 C [report] kernel BUG in gfs2_glock_nq
2025/06/25 upstream (ToT) c4dce0c094a8 C Didn't crash
▶ ▼ Similar bugs (9)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 kernel BUG in gfs2_glock_nq -1 2 1321d 1365d 0/1 auto-closed as invalid on 2022/05/17 22:53
linux-4.19 kernel BUG in gfs2_glock_nq -1 1 1601d 1601d 0/1 auto-closed as invalid on 2021/08/11 04:31
linux-4.19 kernel BUG in gfs2_glock_nq (2) gfs2 -1 C error 52 908d 1447d 0/1 upstream: reported C repro on 2021/09/14 01:12
upstream kernel BUG in gfs2_glock_nq gfs2 -1 2 1376d 1366d 0/29 auto-closed as invalid on 2022/03/23 19:53
linux-6.1 kernel BUG in gfs2_glock_nq origin:upstream -1 C 1024 16h18m 903d 0/3 upstream: reported C repro on 2023/03/12 01:31
linux-4.14 kernel BUG in gfs2_glock_nq (2) gfs2 -1 C 7 912d 1193d 0/1 upstream: reported C repro on 2022/05/26 14:43
upstream kernel BUG in gfs2_glock_nq (2) gfs2 -1 C error 1402 17m 1073d 0/29 upstream: reported C repro on 2022/09/23 06:12
linux-5.15 kernel BUG in gfs2_glock_nq origin:upstream -1 C error 459 6d03h 902d 0/3 upstream: reported C repro on 2023/03/12 21:28
linux-4.14 kernel BUG at fs/gfs2/glock.c:LINE! -1 3 1677d 1749d 0/1 auto-closed as invalid on 2021/05/27 07:56
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/08/12 13:16 14m sumanth.gavini@yahoo.com patch linux-6.6.y report log
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/07/12 13:20 6h01m fix candidate upstream OK (1) job log

Sample crash report:
gfs2: fsid=syz:syz.0: new: gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
gfs2: fsid=syz:syz.0: pid: 5769
gfs2: fsid=syz:syz.0: lock type: 8 req lock state : 1
gfs2: fsid=syz:syz.0: G:  s:EX n:8/1 f:qb t:EX d:EX/0 a:0 v:0 r:5 m:20 p:0
gfs2: fsid=syz:syz.0:  H: s:EX f:cH e:0 p:5769 [syz-executor159] gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
------------[ cut here ]------------
kernel BUG at fs/gfs2/glock.c:1589!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5769 Comm: syz-executor159 Not tainted 6.6.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:add_to_queue fs/gfs2/glock.c:1589 [inline]
RIP: 0010:gfs2_glock_nq+0x113b/0x1420 fs/gfs2/glock.c:1614
Code: 7b 99 3d fe 41 0f b7 0e 48 c7 c7 60 9a ef 8a 4c 89 e6 89 da e8 b6 47 ba 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 35 74 ff ff <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 45 f1 ff ff 4c 89 f7
RSP: 0018:ffffc90004457898 EFLAGS: 00010246
RAX: 5fa62e04681d8700 RBX: 0000000000000008 RCX: ffff888026375a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880770b3be0 R08: ffffffff8e49ab2f R09: 1ffffffff1c93565
R10: dffffc0000000000 R11: fffffbfff1c93566 R12: ffff88802ea99280
R13: ffff88802e2cd818 R14: ffff88802e2cd85a R15: ffff88802e2cd822
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c9b744d010 CR3: 0000000019289000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_glock_nq_init fs/gfs2/glock.h:252 [inline]
 do_sync+0x3c1/0xe00 fs/gfs2/quota.c:912
 gfs2_quota_sync+0x411/0x5a0 fs/gfs2/quota.c:1344
 gfs2_sync_fs+0x4c/0xb0 fs/gfs2/super.c:670
 sync_filesystem+0xea/0x220 fs/sync.c:56
 generic_shutdown_super+0x6f/0x2b0 fs/super.c:666
 kill_block_super+0x44/0x90 fs/super.c:1660
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x429/0x4c0 fs/namespace.c:1250
 task_work_run+0x1ce/0x250 kernel/task_work.c:239
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x903/0x23c0 kernel/exit.c:874
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1023
 __do_sys_exit_group kernel/exit.c:1034 [inline]
 __se_sys_exit_group kernel/exit.c:1032 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1032
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f45d832ab09
Code: Unable to access opcode bytes at 0x7f45d832aadf.
RSP: 002b:00007fff759330a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f45d832ab09
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001
RBP: 00007f45d83b92b0 R08: ffffffffffffffb8 R09: 00000000000125eb
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f45d83b92b0
R13: 0000000000000000 R14: 00007f45d83ba020 R15: 00007f45d82f9050
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:add_to_queue fs/gfs2/glock.c:1589 [inline]
RIP: 0010:gfs2_glock_nq+0x113b/0x1420 fs/gfs2/glock.c:1614
Code: 7b 99 3d fe 41 0f b7 0e 48 c7 c7 60 9a ef 8a 4c 89 e6 89 da e8 b6 47 ba 06 31 ff 48 8b 74 24 08 ba 01 00 00 00 e8 35 74 ff ff <0f> 0b 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 45 f1 ff ff 4c 89 f7
RSP: 0018:ffffc90004457898 EFLAGS: 00010246
RAX: 5fa62e04681d8700 RBX: 0000000000000008 RCX: ffff888026375a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff8880770b3be0 R08: ffffffff8e49ab2f R09: 1ffffffff1c93565
R10: dffffc0000000000 R11: fffffbfff1c93566 R12: ffff88802ea99280
R13: ffff88802e2cd818 R14: ffff88802e2cd85a R15: ffff88802e2cd822
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c9b744d010 CR3: 0000000019289000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (62):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/22 18:48 linux-6.6.y 6282921b6825 d6cdfb8a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/11 19:14 linux-6.6.y 3a8ababb8b6a c06e8995 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/09 06:47 linux-6.6.y 3a8ababb8b6a 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/08 14:42 linux-6.6.y 3a8ababb8b6a 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/08 02:39 linux-6.6.y 3a8ababb8b6a 6a893178 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/07 21:56 linux-6.6.y 3a8ababb8b6a 04cffc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/07 10:53 linux-6.6.y 3a8ababb8b6a 04cffc22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/06 22:25 linux-6.6.y 3a8ababb8b6a 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/06 22:25 linux-6.6.y 3a8ababb8b6a 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/06 22:25 linux-6.6.y 3a8ababb8b6a 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/06 22:24 linux-6.6.y 3a8ababb8b6a 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/06 22:24 linux-6.6.y 3a8ababb8b6a 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 23:07 linux-6.6.y 3a8ababb8b6a ffe1dd46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 23:07 linux-6.6.y 3a8ababb8b6a ffe1dd46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 23:07 linux-6.6.y 3a8ababb8b6a ffe1dd46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 23:07 linux-6.6.y 3a8ababb8b6a ffe1dd46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 23:07 linux-6.6.y 3a8ababb8b6a ffe1dd46 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 10:56 linux-6.6.y 3a8ababb8b6a 37880f40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 10:56 linux-6.6.y 3a8ababb8b6a 37880f40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 10:55 linux-6.6.y 3a8ababb8b6a 37880f40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 10:55 linux-6.6.y 3a8ababb8b6a 37880f40 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 01:49 linux-6.6.y 3a8ababb8b6a f5bcc8dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 01:48 linux-6.6.y 3a8ababb8b6a f5bcc8dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/05 01:48 linux-6.6.y 3a8ababb8b6a f5bcc8dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/03 02:14 linux-6.6.y 3a8ababb8b6a 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/08/01 19:05 linux-6.6.y 3a8ababb8b6a 40127d41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/31 13:37 linux-6.6.y dbcb8d8e4163 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/30 03:24 linux-6.6.y dbcb8d8e4163 f8f2b4da .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 23:05 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 23:05 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 23:05 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 22:59 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 18:53 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 18:49 linux-6.6.y d96eb99e2f0e 56d87229 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 03:54 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 03:52 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 03:16 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/21 03:15 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/20 23:24 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/20 05:18 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/19 04:26 linux-6.6.y d96eb99e2f0e 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/18 18:00 linux-6.6.y d96eb99e2f0e 88248e14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/18 13:04 linux-6.6.y d96eb99e2f0e 88248e14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/17 23:09 linux-6.6.y 9247f4e6573a 0d1223f1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/07/11 06:46 linux-6.6.y 59a2de10b81a 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
2025/06/22 16:51 linux-6.6.y 6282921b6825 d6cdfb8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan kernel BUG in gfs2_glock_nq
* Struck through repros no longer work on HEAD.