syzbot


WARNING in btrfs_put_transaction

Status: upstream: reported syz repro on 2023/07/11 15:58
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+633e55c00c82ceea30f6@syzkaller.appspotmail.com
First crash: 295d, last: 103d
Bug presence (2)
Date Name Commit Repro Result
2023/07/11 linux-5.15.y (ToT) d54cfc420586 C [report] WARNING in btrfs_put_transaction
2023/07/11 upstream (ToT) 3f01e9fed845 C Didn't crash
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in btrfs_put_transaction btrfs C error inconclusive 77 1d09h 518d 0/26 upstream: reported C repro on 2022/11/30 19:58
linux-6.1 WARNING in btrfs_put_transaction 2 307d 388d 0/3 auto-obsoleted due to no activity on 2023/10/07 17:45
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/09/04 06:14 6h58m fix candidate upstream job log (1)

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3566 at fs/btrfs/transaction.c:131 btrfs_put_transaction+0x37b/0x3e0
Modules linked in:
CPU: 0 PID: 3566 Comm: syz-executor.1 Not tainted 5.15.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:btrfs_put_transaction+0x37b/0x3e0 fs/btrfs/transaction.c:130
Code: 48 89 da e8 5a b3 bd 06 e9 00 fe ff ff e8 dd 7a 22 fe 0f 0b e9 ef fc ff ff e8 d1 7a 22 fe 0f 0b e9 72 fd ff ff e8 c5 7a 22 fe <0f> 0b e9 9b fd ff ff e8 b9 7a 22 fe 48 89 df be 03 00 00 00 48 83
RSP: 0018:ffffc90003137a00 EFLAGS: 00010293
RAX: ffffffff835db27b RBX: ffff888062133340 RCX: ffff88801478d940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff835daf7b R09: ffffed100c426603
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88805c04ccb8 R14: ffff888062133000 R15: ffff88805c04cbe8
FS:  0000555556979480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa0355ac000 CR3: 000000007cc6d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_cleanup_transaction+0x53d/0x1d20 fs/btrfs/disk-io.c:5039
 btrfs_error_commit_super fs/btrfs/disk-io.c:4607 [inline]
 close_ctree+0x468/0x886 fs/btrfs/disk-io.c:4445
 generic_shutdown_super+0x136/0x2c0 fs/super.c:475
 kill_anon_super+0x37/0x60 fs/super.c:1076
 btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2391
 deactivate_locked_super+0xa0/0x110 fs/super.c:335
 cleanup_mnt+0x44e/0x500 fs/namespace.c:1143
 task_work_run+0x129/0x1a0 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x106/0x130 kernel/entry/common.c:175
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x5d/0x250 kernel/entry/common.c:301
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5d4aba00d7
Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe22395338 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5d4aba00d7
RDX: 0000000000000000 RSI: 000000000000000a RDI: 00007ffe223953f0
RBP: 00007ffe223953f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffe223964b0
R13: 00007f5d4abea3b9 R14: 00000000000d821d R15: 000000000000000c
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/01/20 05:29 linux-5.15.y ddcaf4999061 9bd8dcda .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in btrfs_put_transaction
2023/07/11 21:45 linux-5.15.y d54cfc420586 2f19aa4f .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in btrfs_put_transaction
2023/08/11 04:46 linux-5.15.y c275eaaaa342 da3c3ef8 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in btrfs_put_transaction
2023/08/10 12:22 linux-5.15.y c275eaaaa342 da3c3ef8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in btrfs_put_transaction
2023/07/11 15:57 linux-5.15.y d54cfc420586 2f19aa4f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in btrfs_put_transaction
* Struck through repros no longer work on HEAD.