syzbot


kernel BUG in ocfs2_write_cluster_by_desc

Status: upstream: reported C repro on 2024/09/16 18:35
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+18a87160c7d64ba2e2f6@syzkaller.appspotmail.com
First crash: 343d, last: 23m
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: kernel BUG in ocfs2_write_cluster (log)
Repro: C syz .config
  
Discussions (3)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] kernel BUG in ocfs2_write_cluster_by_desc 1 (6) 2024/09/23 08:31
[PATCH 2/2] osfs2: Fix kernel BUG in ocfs2_write_cluster 3 (3) 2024/09/21 17:30
[PATCH 1/2] ocfs2: Fix deadlock in ocfs2_read_virt_blocks 3 (3) 2024/09/21 14:22
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 kernel BUG in ocfs2_write_cluster_by_desc origin:upstream -1 C 13 1d13h 57d 0/3 upstream: reported C repro on 2025/06/29 23:33
linux-6.1 kernel BUG in ocfs2_write_cluster_by_desc origin:upstream -1 C error 28 22h51m 157d 0/3 upstream: reported C repro on 2025/03/21 13:38
linux-6.6 kernel BUG in ocfs2_write_cluster_by_desc origin:upstream -1 syz 3 31d 35d 0/2 upstream: reported syz repro on 2025/07/21 22:19
Last patch testing requests (7)
Created Duration User Patch Repo Result
2024/09/30 19:12 15m retest repro upstream report log
2024/09/30 19:12 15m retest repro upstream report log
2024/09/30 19:12 15m retest repro upstream report log
2024/09/23 08:16 14m heming.zhao@suse.com patch upstream report log
2024/09/18 15:53 19m pvmohammedanees2003@gmail.com patch upstream OK log
2024/09/18 15:22 14m pvmohammedanees2003@gmail.com patch upstream report log
2024/09/17 16:26 13m pvmohammedanees2003@gmail.com patch upstream report log

Sample crash report:
ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
------------[ cut here ]------------
------------[ cut here ]------------
kernel BUG at fs/ocfs2/aops.c:1159!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 5851 Comm: syz-executor146 Tainted: G        W           6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT_{RT,(full)} 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 f4 64 07 8d ba 6a 04 00 00 48 c7 c1 40 e5 49 8b e8 48 51 1b 00 90 0f 0b e8 40 c4 2f fe 90 <0f> 0b e8 38 c4 2f fe 90 0f 0b e8 30 c4 2f fe 90 0f 0b e8 28 c4 2f
RSP: 0018:ffffc90004af6e60 EFLAGS: 00010293
RAX: ffffffff838e9700 RBX: ffff8880372d4014 RCX: ffff888026825940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004af7190 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e3a7c7 R12: ffff888037684000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880372d4014
FS:  000055556746b380(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd76441e0f8 CR3: 0000000034836000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ocfs2_write_begin_nolock+0x31a3/0x4340 fs/ocfs2/aops.c:1796
 ocfs2_write_begin+0x1bb/0x310 fs/ocfs2/aops.c:1884
 generic_perform_write+0x29a/0x8c0 mm/filemap.c:4175
 ocfs2_file_write_iter+0x157d/0x1d20 fs/ocfs2/file.c:2469
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x5d2/0xb40 fs/read_write.c:686
 ksys_write+0x14b/0x260 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd7643a2b99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff87c95478 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd7643a2b99
RDX: 0000000000032600 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fd76441a5f0 R08: 000055556746c4c0 R09: 000055556746c4c0
R10: 0000000000004440 R11: 0000000000000246 R12: 00007fff87c954a0
R13: 00007fff87c956c8 R14: 431bde82d7b634db R15: 00007fd7643eb03b
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_write_cluster fs/ocfs2/aops.c:1159 [inline]
RIP: 0010:ocfs2_write_cluster_by_desc+0x1cc1/0x1cf0 fs/ocfs2/aops.c:1219
Code: 03 48 8d bc 24 10 02 00 00 48 c7 c6 f4 64 07 8d ba 6a 04 00 00 48 c7 c1 40 e5 49 8b e8 48 51 1b 00 90 0f 0b e8 40 c4 2f fe 90 <0f> 0b e8 38 c4 2f fe 90 0f 0b e8 30 c4 2f fe 90 0f 0b e8 28 c4 2f
RSP: 0018:ffffc90004af6e60 EFLAGS: 00010293
RAX: ffffffff838e9700 RBX: ffff8880372d4014 RCX: ffff888026825940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004af7190 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e3a7c7 R12: ffff888037684000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880372d4014
FS:  000055556746b380(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd76441e0f8 CR3: 0000000034836000 CR4: 00000000003526f0

Crashes (2133):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/19 15:12 upstream be48bcf004f9 254a27c1 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/17 17:44 upstream 99bade344cfa 1804e95e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-kasan-gce-root kernel BUG in ocfs2_write_cluster_by_desc
2025/07/24 20:15 upstream 25fae0b93d1d 65d60d73 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/07/13 08:15 upstream 3f31a806a62e 3cda49cf .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/07/13 07:10 upstream 3f31a806a62e 3cda49cf .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/06/25 21:18 upstream 92ca6c498a5e 26d77996 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/06/13 08:41 upstream 27605c8c0f69 98683f8f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2024/12/27 02:49 upstream d6ef8b40d075 d3ccff63 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/11 00:27 upstream 2b38afce25c4 32a0e5ed .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/06/25 17:36 upstream 7595b66ae9de 26d77996 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2024/09/16 19:10 upstream adfc3ded5c33 49cf0773 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2024/09/16 18:28 upstream adfc3ded5c33 49cf0773 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2024/09/16 17:46 upstream adfc3ded5c33 49cf0773 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/02 17:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 82af5ea7c611 7368264b .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 01:13 upstream c330cb607721 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 14:58 upstream 3957a5720157 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 13:00 upstream 3957a5720157 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 11:56 upstream 3957a5720157 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 10:26 upstream 3957a5720157 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in ocfs2_write_cluster_by_desc
2025/08/21 12:54 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/26 01:12 upstream b6add54ba618 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 23:37 upstream b6add54ba618 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 17:09 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 15:52 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 12:28 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 11:25 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 08:52 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 07:47 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 07:23 upstream 1b237f190eb3 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 02:53 upstream 69fd6b99b8f8 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 19:12 upstream 69fd6b99b8f8 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 13:31 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 12:51 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 10:13 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 07:26 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 05:40 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 00:50 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 22:35 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 21:10 upstream 8d245acc1e88 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 17:35 upstream 6debb6904172 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 14:41 upstream 6debb6904172 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 10:15 upstream 6debb6904172 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 07:43 upstream 6debb6904172 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 03:12 upstream cf6fc5eefc5b bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 00:12 upstream cf6fc5eefc5b bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 23:27 upstream cf6fc5eefc5b bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 22:06 upstream cf6fc5eefc5b bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 11:39 upstream 3957a5720157 bf27483f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 04:29 linux-next 7fa4d8dc380f bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 21:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 18:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 14:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/25 13:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 22:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 21:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 16:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 15:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/24 02:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 19:38 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 15:54 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/23 01:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 20:06 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
2025/08/22 17:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in ocfs2_write_cluster_by_desc
* Struck through repros no longer work on HEAD.