syzbot


kernel BUG in ocfs2_journal_toggle_dirty

Status: upstream: reported C repro on 2024/10/28 20:47
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+ea8d1726e1e3367085ce@syzkaller.appspotmail.com
First crash: 160d, last: 7d18h
Cause bisection: introduced by (bisect log) :
commit 98ded54a33839e7b8f8bed772e01a544f48e33a7
Author: Christoph Hellwig <hch@lst.de>
Date: Wed Mar 30 05:29:10 2022 +0000

  loop: remove the racy bd_inode->i_mapping->nrpages asserts

Crash: BUG: unable to handle kernel NULL pointer dereference in ocfs2_evict_inode (log)
Repro: syz .config
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] kernel BUG in ocfs2_journal_toggle_dirty 0 (3) 2025/02/10 01:16
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 kernel BUG in ocfs2_journal_toggle_dirty origin:upstream C 1 8d04h 8d04h 0/3 upstream: reported C repro on 2025/03/25 18:45
Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/03/19 08:28 21m retest repro upstream report log
2025/03/19 08:28 21m retest repro upstream report log
2025/03/19 08:28 21m retest repro upstream report log
2025/03/19 08:28 19m retest repro upstream report log
2025/03/19 08:40 25m retest repro upstream OK log
2025/03/19 08:28 19m retest repro upstream report log
2025/01/22 10:19 18m retest repro upstream report log
2025/01/22 10:19 19m retest repro upstream report log
2025/01/05 18:51 27m retest repro upstream report log
2024/11/27 17:05 13m retest repro upstream report log

Sample crash report:
(syz-executor163,6254,1):ocfs2_check_volume:2417 ERROR: status = -30
(syz-executor163,6254,1):ocfs2_check_volume:2429 ERROR: status = -30
(syz-executor163,6254,1):ocfs2_mount_volume:1764 ERROR: status = -30
------------[ cut here ]------------
kernel BUG at fs/ocfs2/journal.c:1012!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 1 UID: 0 PID: 6254 Comm: syz-executor163 Not tainted 6.14.0-syzkaller-01103-g2df0c02dab82 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ocfs2_journal_toggle_dirty+0x3ae/0x3c0 fs/ocfs2/journal.c:1012
Code: 67 fe e9 e1 fd ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 1f fe ff ff 48 89 df e8 5d a0 67 fe e9 12 fe ff ff e8 83 81 ff fd 90 <0f> 0b e8 0b be 56 08 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc90004e36fe0 EFLAGS: 00010293
RAX: ffffffff83c3e14d RBX: 00000000ffffffff RCX: ffff888027d65a00
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc90004e370b0 R08: ffffffff83c3dea2 R09: 1ffffffff2079fae
R10: dffffc0000000000 R11: fffffbfff2079faf R12: dffffc0000000000
R13: ffff8880730ec9f8 R14: ffff888061068600 R15: 1ffff920009c6e04
FS:  00007fa8247706c0(0000) GS:ffff888125324000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa81cd69000 CR3: 0000000078c7a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ocfs2_journal_shutdown+0x5a1/0xbd0 fs/ocfs2/journal.c:1094
 ocfs2_mount_volume fs/ocfs2/super.c:1785 [inline]
 ocfs2_fill_super+0x68fc/0x74e0 fs/ocfs2/super.c:1083
 get_tree_bdev_flags+0x492/0x5c0 fs/super.c:1636
 vfs_get_tree+0x92/0x2b0 fs/super.c:1759
 do_new_mount+0x2cf/0xb70 fs/namespace.c:3878
 do_mount fs/namespace.c:4218 [inline]
 __do_sys_mount fs/namespace.c:4429 [inline]
 __se_sys_mount+0x38c/0x400 fs/namespace.c:4406
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa8247c957a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa824770088 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fa8247700a0 RCX: 00007fa8247c957a
RDX: 0000200000004440 RSI: 0000200000000040 RDI: 00007fa8247700a0
RBP: 0000200000000040 R08: 00007fa8247700e0 R09: 0000000000004427
R10: 00000000000008c0 R11: 0000000000000282 R12: 0000200000004440
R13: 00007fa8247700e0 R14: 0000000000000003 R15: 00000000000008c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_journal_toggle_dirty+0x3ae/0x3c0 fs/ocfs2/journal.c:1012
Code: 67 fe e9 e1 fd ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 1f fe ff ff 48 89 df e8 5d a0 67 fe e9 12 fe ff ff e8 83 81 ff fd 90 <0f> 0b e8 0b be 56 08 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90
RSP: 0018:ffffc90004e36fe0 EFLAGS: 00010293
RAX: ffffffff83c3e14d RBX: 00000000ffffffff RCX: ffff888027d65a00
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: ffffc90004e370b0 R08: ffffffff83c3dea2 R09: 1ffffffff2079fae
R10: dffffc0000000000 R11: fffffbfff2079faf R12: dffffc0000000000
R13: ffff8880730ec9f8 R14: ffff888061068600 R15: 1ffff920009c6e04
FS:  00007fa8247706c0(0000) GS:ffff888125324000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa82484b118 CR3: 0000000078c7a000 CR4: 0000000000350ef0

Crashes (17):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/26 04:40 upstream 2df0c02dab82 89d30d73 .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_journal_toggle_dirty
2025/03/02 23:52 upstream 1973160c90d7 c3901742 .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_journal_toggle_dirty
2025/02/20 10:43 upstream 87a132e73910 50668798 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2 (corrupt fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/10 01:15 upstream 69b54314c975 ef44b750 .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_journal_toggle_dirty
2025/03/05 08:02 upstream 48a5eed9ad58 c3901742 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/23 20:58 upstream 27102b38b8ca d34966d1 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/17 19:42 upstream 0ad2507d5d93 4121cf9d .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/16 17:46 upstream ad1b832bf1cf 40a34ec9 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/15 07:19 upstream 04f41cbf03ec 40a34ec9 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/15 06:39 upstream 04f41cbf03ec 40a34ec9 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/14 16:42 upstream 128c8f96eb86 fe17639f .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1 (clean fs)] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2025/02/02 23:36 upstream 69e858e0b8b2 568559e4 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2024/11/13 16:44 upstream f1b785f4c787 4dfba277 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2024/10/30 09:25 upstream c1e939a21eb1 66aeb999 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2024/10/24 20:42 upstream c2ee9f594da8 c08e46d6 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in ocfs2_journal_toggle_dirty
2024/12/22 17:16 upstream 48f506ad0b68 d7f584ee .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel BUG in ocfs2_journal_toggle_dirty
2024/11/28 22:26 linux-next f486c8aa16b8 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root kernel BUG in ocfs2_journal_toggle_dirty
* Struck through repros no longer work on HEAD.