syzbot


WARNING in __btrfs_update_delayed_inode (2)

Status: upstream: reported on 2025/02/05 03:31
Subsystems: btrfs
[Documentation on labels]
Reported-by: syzbot+9864f9d3c5c14e151341@syzkaller.appspotmail.com
First crash: 60d, last: 19d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [btrfs?] WARNING in __btrfs_update_delayed_inode (2) 0 (1) 2025/02/05 03:31
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __btrfs_update_delayed_inode btrfs 2 765d 766d 0/28 auto-obsoleted due to no activity on 2023/06/27 15:17

Sample crash report:
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 3056 at fs/btrfs/delayed-inode.c:1090 __btrfs_update_delayed_inode+0xa02/0xbe0 fs/btrfs/delayed-inode.c:1090
Modules linked in:
CPU: 0 UID: 0 PID: 3056 Comm: kworker/u4:10 Not tainted 6.14.0-rc6-syzkaller-00115-ge3a854b577cb #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:__btrfs_update_delayed_inode+0xa02/0xbe0 fs/btrfs/delayed-inode.c:1090
Code: 8c 49 89 dd 44 89 ea e8 0c 37 27 fd e9 db fe ff ff e8 f2 5b c1 fd 90 48 c7 c7 20 dc 6d 8c 49 89 dd 44 89 ee e8 8f 18 81 fd 90 <0f> 0b 90 90 e9 b9 fe ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc9000d9af4a0 EFLAGS: 00010246
RAX: bb716dc3812a8900 RBX: 00000000ffffffe4 RCX: ffff88804012c880
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000d9af5d0 R08: ffffffff81819e52 R09: 1ffff11003f8519a
R10: dffffc0000000000 R11: ffffed1003f8519b R12: 1ffff110087f79a3
R13: 00000000ffffffe4 R14: ffff888043fbcd18 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000600 CR3: 000000001231e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_update_delayed_inode fs/btrfs/delayed-inode.c:1108 [inline]
 __btrfs_commit_inode_delayed_items+0x2318/0x24a0 fs/btrfs/delayed-inode.c:1131
 __btrfs_run_delayed_items+0x20e/0x4b0 fs/btrfs/delayed-inode.c:1165
 flush_space+0x2f1/0xd30 fs/btrfs/space-info.c:782
 btrfs_async_reclaim_metadata_space+0x178/0x3b0 fs/btrfs/space-info.c:1120
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xabe/0x18e0 kernel/workqueue.c:3319
 worker_thread+0x870/0xd30 kernel/workqueue.c:3400
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/14 17:48 upstream e3a854b577cb e2826670 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __btrfs_update_delayed_inode
2025/02/01 03:25 upstream 69e858e0b8b2 aa47157c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in __btrfs_update_delayed_inode
* Struck through repros no longer work on HEAD.