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kernel panic: trans should be locked, unlocked by bch2_btree_update_start

Status: upstream: reported C repro on 2024/12/05 17:48
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+d540192e763531d307ff@syzkaller.appspotmail.com
First crash: 139d, last: 3d06h
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] kernel panic: trans should be locked, unlocked by bch2_btree_update_start 0 (1) 2024/12/05 17:48
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2025/04/20 03:05 21m retest repro upstream report log
2025/04/19 23:06 42m retest repro linux-next error
2025/04/19 22:27 20m retest repro upstream OK log
2025/04/19 22:51 32m retest repro linux-next error
2025/04/19 22:27 20m retest repro upstream OK log
2025/04/19 22:27 20m retest repro upstream OK log
2025/01/27 23:11 15m retest repro upstream error
2025/01/27 21:44 13m retest repro upstream error
2025/01/27 21:44 13m retest repro upstream error
2025/01/27 21:44 13m retest repro upstream error

Sample crash report:
  incorrectly set at freespace:0:37:0 (free 0, genbits 0 should be 0), shutting down
bcachefs (loop0): bch2_btree_update_start(): error fsck_errors_not_fixed
Kernel panic - not syncing: trans should be locked, unlocked by bch2_btree_update_start+0x1283/0x16c0 fs/bcachefs/btree_update_interior.c:1250
CPU: 0 UID: 0 PID: 5869 Comm: syz-executor410 Not tainted 6.14.0-next-20250404-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 panic+0x349/0x880 kernel/panic.c:354
 bch2_trans_unlocked_or_in_restart_error+0xa8/0x100 fs/bcachefs/btree_iter.c:1457
 bch2_trans_verify_not_unlocked_or_in_restart fs/bcachefs/btree_iter.h:333 [inline]
 bch2_path_get+0x12c4/0x1610 fs/bcachefs/btree_iter.c:1733
 bch2_trans_iter_init_common fs/bcachefs/btree_iter.h:518 [inline]
 bch2_trans_node_iter_init+0x3c8/0x700 fs/bcachefs/btree_iter.c:3063
 bch2_move_btree+0x4e4/0xe30 fs/bcachefs/move.c:1003
 bch2_scan_old_btree_nodes+0x14d/0x3c0 fs/bcachefs/move.c:1144
 bch2_fs_recovery+0x3897/0x3e20 fs/bcachefs/recovery.c:1050
 bch2_fs_start+0x310/0x620 fs/bcachefs/super.c:1069
 bch2_fs_get_tree+0x113e/0x18f0 fs/bcachefs/fs.c:2253
 vfs_get_tree+0x90/0x2b0 fs/super.c:1759
 do_new_mount+0x2cf/0xb70 fs/namespace.c:3879
 do_mount fs/namespace.c:4219 [inline]
 __do_sys_mount fs/namespace.c:4430 [inline]
 __se_sys_mount+0x38c/0x400 fs/namespace.c:4407
 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: 0033:0x7f803ee46e6a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdf91f7bc8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffdf91f7be0 RCX: 00007f803ee46e6a
RDX: 00002000000000c0 RSI: 0000200000000000 RDI: 00007ffdf91f7be0
RBP: 0000200000000000 R08: 00007ffdf91f7c20 R09: 0000000000005962
R10: 0000000000800002 R11: 0000000000000282 R12: 00002000000000c0
R13: 00007ffdf91f7c20 R14: 0000000000000003 R15: 0000000000800002
 </TASK>
Kernel Offset: disabled

Crashes (98):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/04/05 22:22 linux-next a4cda136f021 1c65791e .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/03/29 09:46 upstream 7d06015d936c cf25e2c2 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2024/12/14 03:16 upstream f932fb9b4074 7cbfbb3a .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/03/29 07:56 upstream 0c86b42439b6 cf25e2c2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/02/21 21:10 upstream 8a61cb6e150e d34966d1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/02/20 01:24 upstream 6537cfb395f3 50668798 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/02/14 10:28 upstream ab68d7eb7b1a d9a046cf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/02/05 19:22 upstream 92514ef226f5 577d049b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/02/05 12:17 upstream 5c8c229261f1 5896748e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/02/03 19:44 upstream 2014c95afece a21a8419 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/29 13:11 upstream 805ba04cb7cc d03b0c97 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/28 04:05 upstream 805ba04cb7cc 18070896 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/13 21:28 upstream c45323b7560e b1f1cd88 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/13 17:19 upstream 5bc55a333a2f 249ceea9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/12 16:17 upstream b62cef9a5c67 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/12 00:50 upstream b62cef9a5c67 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/11 18:24 upstream 77a903cd8e5a 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/11 13:22 upstream 77a903cd8e5a 6dbc6a9b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/10 22:24 upstream 2144da25584e d9381135 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/10 17:53 upstream 2144da25584e d9381135 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/09 21:21 upstream eea6e4b4dfb8 9220929f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/09 16:50 upstream eea6e4b4dfb8 9220929f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/09 05:30 upstream 0b7958fa05d5 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/09 00:02 upstream 0b7958fa05d5 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/08 07:40 upstream 09a0fa92e5b4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/07 23:34 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/07 18:10 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/07 15:11 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/07 14:11 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/07 04:46 upstream fbfd64d25c7a f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/06 14:43 upstream 9d89551994a4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/06 09:08 upstream 9244696b34f2 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/06 05:10 upstream 9244696b34f2 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/05 18:38 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/05 09:32 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/05 02:25 upstream ab75170520d4 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/04 14:58 upstream 63676eefb7a0 f3558dbf .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/03 16:03 upstream 0bc21e701a6f 96d578a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/03 13:14 upstream 0bc21e701a6f 96d578a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/03 09:38 upstream 0bc21e701a6f d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/03 04:24 upstream 0bc21e701a6f d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/03 02:42 upstream 0bc21e701a6f d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/02 18:46 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/02 13:50 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/02 10:11 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/02 08:33 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/01 07:28 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/01 06:08 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2025/01/01 01:14 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2024/12/31 22:30 upstream ccb98ccef0e5 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2024/12/05 04:05 upstream feffde684ac2 29f61fce .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2024/12/05 03:33 upstream feffde684ac2 29f61fce .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
2024/12/05 03:04 upstream feffde684ac2 29f61fce .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci-snapshot-upstream-root kernel panic: trans should be locked, unlocked by bch2_btree_update_start
* Struck through repros no longer work on HEAD.