syzbot


kernel BUG in __bch2_trans_commit

Status: upstream: reported C repro on 2024/10/21 04:31
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+f074d2e31d8d35a6a38c@syzkaller.appspotmail.com
First crash: 5d16h, last: 10m
Cause bisection: introduced by (bisect log) [merge commit]:
commit 63fa605041843b50ebc8dca6483dbfa6e835c61a
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Mon Oct 14 18:12:09 2024 +0000

  Merge tag 'erofs-for-6.12-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs

Crash: lost connection to test machine (log)
Repro: C syz .config
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] kernel BUG in __bch2_trans_commit 0 (1) 2024/10/21 04:31

Sample crash report:
bcachefs (loop0): bch2_write_super(): fatal error  loop0: Superblock write was silently dropped! (seq 0 expected 53)
bcachefs (loop0): fatal error - emergency read only
------------[ cut here ]------------
kernel BUG at fs/bcachefs/journal.h:375!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 80 Comm: kworker/u8:4 Not tainted 6.12.0-rc4-syzkaller-00047-gc2ee9f594da8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: btree_update btree_interior_update_work
RIP: 0010:bch2_journal_res_get fs/bcachefs/journal.h:375 [inline]
RIP: 0010:bch2_trans_journal_res_get fs/bcachefs/btree_trans_commit.c:350 [inline]
RIP: 0010:bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:668 [inline]
RIP: 0010:do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:900 [inline]
RIP: 0010:__bch2_trans_commit+0x9232/0x93c0 fs/bcachefs/btree_trans_commit.c:1121
Code: fd 90 0f 0b e8 bf b5 78 fd 90 0f 0b e8 b7 b5 78 fd 90 0f 0b e8 af b5 78 fd 90 0f 0b e8 a7 b5 78 fd 90 0f 0b e8 9f b5 78 fd 90 <0f> 0b e8 97 b5 78 fd 90 0f 0b e8 8f b5 78 fd 90 0f 0b e8 87 b5 78
RSP: 0018:ffffc900015c76c0 EFLAGS: 00010293
RAX: ffffffff841c21f1 RBX: 0000000000000000 RCX: ffff88801cbbda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900015c7890 R08: ffffffff841bc528 R09: 1ffff1100da794a8
R10: dffffc0000000000 R11: ffffed100da794a9 R12: ffff88806d380000
R13: ffff88806d3ca500 R14: 0000000000000044 R15: ffff8880297fc0d0
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feee53a6000 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:728 [inline]
 btree_interior_update_work+0x1492/0x2b10 fs/bcachefs/btree_update_interior.c:866
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_journal_res_get fs/bcachefs/journal.h:375 [inline]
RIP: 0010:bch2_trans_journal_res_get fs/bcachefs/btree_trans_commit.c:350 [inline]
RIP: 0010:bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:668 [inline]
RIP: 0010:do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:900 [inline]
RIP: 0010:__bch2_trans_commit+0x9232/0x93c0 fs/bcachefs/btree_trans_commit.c:1121
Code: fd 90 0f 0b e8 bf b5 78 fd 90 0f 0b e8 b7 b5 78 fd 90 0f 0b e8 af b5 78 fd 90 0f 0b e8 a7 b5 78 fd 90 0f 0b e8 9f b5 78 fd 90 <0f> 0b e8 97 b5 78 fd 90 0f 0b e8 8f b5 78 fd 90 0f 0b e8 87 b5 78
RSP: 0018:ffffc900015c76c0 EFLAGS: 00010293
RAX: ffffffff841c21f1 RBX: 0000000000000000 RCX: ffff88801cbbda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900015c7890 R08: ffffffff841bc528 R09: 1ffff1100da794a8
R10: dffffc0000000000 R11: ffffed100da794a9 R12: ffff88806d380000
R13: ffff88806d3ca500 R14: 0000000000000044 R15: ffff8880297fc0d0
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feee5bff000 CR3: 00000000297f6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2150):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/22 17:02 upstream c2ee9f594da8 a93682b3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 08:36 upstream c2ee9f594da8 a93682b3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 17:29 upstream 42f7652d3eb5 f1e4447c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 15:27 upstream 42f7652d3eb5 f1e4447c .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 07:14 upstream 42f7652d3eb5 cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 06:26 upstream 42f7652d3eb5 cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 01:54 upstream 715ca9dd687f cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/20 16:19 upstream 715ca9dd687f cd6fc0a3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/19 09:45 upstream b04ae0f45168 cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/19 09:34 upstream b04ae0f45168 cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/19 08:24 upstream b04ae0f45168 cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/19 05:55 upstream b04ae0f45168 cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 16:14 upstream 4d939780b705 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 14:20 upstream 4d939780b705 666f77ed .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 __bch2_trans_commit
2024/10/18 08:03 upstream 6efbea77b390 666f77ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 07:13 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 05:43 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 03:27 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 03:11 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 03:02 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 02:09 upstream 6efbea77b390 666f77ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 00:58 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/18 00:48 upstream 6efbea77b390 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/17 22:54 upstream 6efbea77b390 666f77ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/17 16:29 upstream c964ced77262 666f77ed .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/17 05:11 upstream c964ced77262 666f77ed .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in __bch2_trans_commit
2024/10/17 04:28 upstream c964ced77262 666f77ed .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in __bch2_trans_commit
2024/10/22 20:32 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 19:01 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 17:42 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 16:51 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 15:18 upstream c2ee9f594da8 9d74f456 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __bch2_trans_commit
2024/10/22 14:37 upstream c2ee9f594da8 9d74f456 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __bch2_trans_commit
2024/10/22 13:35 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 12:35 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 11:31 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __bch2_trans_commit
2024/10/22 10:32 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 09:49 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 09:38 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 08:14 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 07:11 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __bch2_trans_commit
2024/10/22 06:07 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 05:34 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 05:01 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 04:47 upstream c2ee9f594da8 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in __bch2_trans_commit
2024/10/22 02:49 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 01:49 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 01:03 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/22 00:56 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 23:56 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 23:18 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 22:16 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 21:19 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 20:15 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 19:56 upstream d12937763990 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 18:38 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 18:09 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 17:36 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 16:32 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 16:28 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 15:10 upstream 42f7652d3eb5 a93682b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root kernel BUG in __bch2_trans_commit
2024/10/21 14:25 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 13:59 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 13:51 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 12:38 upstream 42f7652d3eb5 f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 11:59 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root kernel BUG in __bch2_trans_commit
2024/10/21 11:27 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 10:19 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 09:54 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 08:26 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 07:25 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
2024/10/21 05:57 upstream 42f7652d3eb5 cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in __bch2_trans_commit
* Struck through repros no longer work on HEAD.