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WARNING in bch2_trans_srcu_unlock

Status: upstream: reported C repro on 2024/05/03 15:30
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+1e515cab343dbe5aa38a@syzkaller.appspotmail.com
First crash: 590d, last: 56d
Cause bisection: introduced by (bisect log) :
commit 03ef80b469d5d83530ce1ce15be78a40e5300f9b
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date: Sat Sep 23 22:41:51 2023 +0000

  bcachefs: Ignore unknown mount options

Crash: WARNING in rhashtable_init (log)
Repro: C syz .config
  
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Discussions (19)
Title Replies (including bot) Last reply
[syzbot] Monthly bcachefs report (Oct 2025) 0 (1) 2025/10/27 12:50
[syzbot] Monthly bcachefs report (Sep 2025) 0 (1) 2025/09/26 05:14
[syzbot] Monthly bcachefs report (Aug 2025) 0 (1) 2025/08/26 07:13
[syzbot] Monthly bcachefs report (Jul 2025) 0 (1) 2025/07/25 12:39
[syzbot] Monthly bcachefs report (Jun 2025) 2 (3) 2025/06/24 17:31
[syzbot] Monthly bcachefs report (May 2025) 0 (1) 2025/05/24 10:04
[syzbot] Monthly bcachefs report (Apr 2025) 0 (1) 2025/04/22 12:41
[syzbot] Monthly bcachefs report (Mar 2025) 0 (1) 2025/03/19 21:29
[syzbot] Monthly bcachefs report (Feb 2025) 0 (1) 2025/02/16 21:54
[syzbot] Monthly bcachefs report (Jan 2025) 0 (1) 2025/01/16 10:11
[syzbot] Monthly bcachefs report (Dec 2024) 0 (1) 2024/12/16 09:45
[syzbot] Monthly bcachefs report (Nov 2024) 0 (1) 2024/11/15 10:49
[syzbot] Monthly bcachefs report (Oct 2024) 0 (1) 2024/10/14 19:38
[syzbot] Monthly bcachefs report (Sep 2024) 0 (1) 2024/09/13 10:03
[PATCH] bcachefs: WARNING in bch2_trans_srcu_unlock 3 (3) 2024/08/07 03:04
Re: [syzbot] [PATCH] bcachefs: WARNING in bch2_trans_srcu_unlock 0 (1) 2024/07/23 23:48
[syzbot] Monthly bcachefs report (Jul 2024) 0 (1) 2024/07/12 12:53
[syzbot] Monthly bcachefs report (Jun 2024) 0 (1) 2024/06/11 08:27
[syzbot] [bcachefs?] WARNING in bch2_trans_srcu_unlock 0 (3) 2024/05/04 09:48
▶ ▼ Last patch testing requests (5)
Created Duration User Patch Repo Result
2025/11/03 11:42 22m retest repro upstream OK log
2025/11/03 11:42 22m retest repro upstream OK log
2025/11/03 07:39 22m retest repro linux-next OK log
2024/08/27 22:00 19m retest repro upstream OK log
2024/07/23 23:48 19m cam.alvarez.i@gmail.com patch upstream OK log

Sample crash report:
------------[ cut here ]------------
btree trans held srcu lock (delaying memory reclaim) for 11 seconds
WARNING: CPU: 0 PID: 1030 at fs/bcachefs/btree_iter.c:3276 check_srcu_held_too_long fs/bcachefs/btree_iter.c:3274 [inline]
WARNING: CPU: 0 PID: 1030 at fs/bcachefs/btree_iter.c:3276 bch2_trans_srcu_unlock+0x50d/0x620 fs/bcachefs/btree_iter.c:3290
Modules linked in:
CPU: 0 UID: 0 PID: 1030 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: btree_update btree_interior_update_work
RIP: 0010:check_srcu_held_too_long fs/bcachefs/btree_iter.c:3274 [inline]
RIP: 0010:bch2_trans_srcu_unlock+0x50d/0x620 fs/bcachefs/btree_iter.c:3290
Code: 7d 00 49 c1 ef 02 48 b9 c3 f5 28 5c 8f c2 f5 28 4c 89 f8 48 f7 e1 48 c1 ea 02 48 c7 c7 20 be d3 8b 48 89 d6 e8 64 af 59 fd 90 <0f> 0b 90 90 e9 a6 fe ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 1c fb ff
RSP: 0018:ffffc900038e75b8 EFLAGS: 00010246
RAX: 0123c61fa5b9fc00 RBX: 1ffff11008150009 RCX: ffff888025f68000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 1ffff11008150011 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa234 R12: ffff888040a80046
R13: ffff888040a80088 R14: 1ffff11008150008 R15: 0000000000000129
FS:  0000000000000000(0000) GS:ffff888125c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8b5820f000 CR3: 0000000069f8b000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 bch2_trans_begin+0x1b3b/0x2310 fs/bcachefs/btree_iter.c:3387
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:750 [inline]
 btree_interior_update_work+0x1278/0x27d0 fs/bcachefs/btree_update_interior.c:867
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Crashes (4145):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/27 09:51 upstream fec734e8d564 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in bch2_trans_srcu_unlock
2025/08/21 07:00 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in bch2_trans_srcu_unlock
2025/07/26 17:09 upstream 5f33ebd2018c fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in bch2_trans_srcu_unlock
2025/04/21 19:29 upstream 9d7a0577c9db 2a20f901 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in bch2_trans_srcu_unlock
2024/09/18 18:34 upstream bdf56c7580d2 c673ca06 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in bch2_trans_srcu_unlock
2024/06/24 16:52 upstream f2661062f16b edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in bch2_trans_srcu_unlock
2024/06/24 15:51 upstream f2661062f16b edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in bch2_trans_srcu_unlock
2024/05/03 19:18 upstream f03359bca01b dd26401e .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in bch2_trans_srcu_unlock
2024/05/03 15:13 upstream f03359bca01b dd26401e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in bch2_trans_srcu_unlock
2024/05/03 15:08 upstream f03359bca01b dd26401e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in bch2_trans_srcu_unlock
2024/06/21 01:42 upstream 50736169ecc8 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in bch2_trans_srcu_unlock
2024/06/26 07:49 upstream 55027e689933 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in bch2_trans_srcu_unlock
2025/09/15 19:47 linux-next 590b221ed425 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in bch2_trans_srcu_unlock
2025/09/07 14:14 linux-next be5d4872e528 d291dd2d .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in bch2_trans_srcu_unlock
2025/10/20 07:14 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/20 05:20 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/20 00:24 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/19 11:11 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/18 21:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/17 21:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7adf5298 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/16 01:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/15 22:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/15 08:10 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/15 04:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/15 01:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/14 16:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/13 10:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/13 08:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/12 19:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/12 14:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/12 05:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/11 18:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/11 08:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/10 12:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/10 08:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/09 21:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/09 01:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/08 13:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/08 09:06 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/08 04:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/07 23:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/07 20:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/07 17:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/06 23:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 91305dbe .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/06 08:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/05 06:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/04 10:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/04 01:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/03 09:32 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/03 04:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/03 01:22 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/02 23:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/10/02 10:12 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/30 04:14 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/30 01:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/29 15:58 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/29 01:48 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/28 12:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/28 06:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
2025/09/28 05:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 2213e57a69f0 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in bch2_trans_srcu_unlock
* Struck through repros no longer work on HEAD.