syzbot


WARNING in bch2_recovery_pass_want_ratelimit

Status: upstream: reported C repro on 2025/09/04 11:24
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+3bf8b0169d7fcc0ebcd5@syzkaller.appspotmail.com
First crash: 55d, last: 6d23h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] WARNING in bch2_recovery_pass_want_ratelimit 0 (2) 2025/10/19 00:33

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6755 at fs/bcachefs/recovery_passes.c:174 bch2_recovery_pass_want_ratelimit+0x1c0/0x270 fs/bcachefs/recovery_passes.c:174
Modules linked in:
CPU: 1 UID: 0 PID: 6755 Comm: bch-copygc/loop Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : bch2_recovery_pass_want_ratelimit+0x1c0/0x270 fs/bcachefs/recovery_passes.c:174
lr : bch2_recovery_pass_want_ratelimit+0x1c0/0x270 fs/bcachefs/recovery_passes.c:174
sp : ffff8000a1a76af0
x29: ffff8000a1a76af0 x28: ffff0000f69b8028 x27: ffff0000d4bfe198
x26: 1ffff0001434ed70 x25: dfff800000000000 x24: 0000000000000001
x23: ffff8000a1a76c00 x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000ecf80000 x19: 000000000000000e x18: 00000000ffffffff
x17: ffff80008280dad8 x16: ffff80008052b264 x15: 0000000000000001
x14: 1fffe00018c07b0b x13: 0000000000000000 x12: 0000000000000000
x11: 1ffff0001434ed95 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000c8658000 x7 : 2020202020202020 x6 : 696d206874697720
x5 : ffff0000c603d85d x4 : ffff0000c603d85b x3 : 0000000000000002
x2 : ffff8000a1a76b84 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 bch2_recovery_pass_want_ratelimit+0x1c0/0x270 fs/bcachefs/recovery_passes.c:174 (P)
 recovery_pass_needs_set+0xa0/0x468 fs/bcachefs/recovery_passes.c:302
 bch2_run_explicit_recovery_pass+0x4c/0xec fs/bcachefs/recovery_passes.c:416
 bch2_check_bucket_backpointer_mismatch+0x34c/0x3a0 fs/bcachefs/backpointers.c:1220
 __bch2_move_data_phys+0x684/0x144c fs/bcachefs/move.c:1011
 bch2_evacuate_bucket+0x220/0x34c fs/bcachefs/move.c:1082
 bch2_copygc+0x2d80/0x3570 fs/bcachefs/movinggc.c:234
 bch2_copygc_thread+0x898/0xd8c fs/bcachefs/movinggc.c:409
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
irq event stamp: 236
hardirqs last  enabled at (235): [<ffff800080c664d0>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234
hardirqs last disabled at (236): [<ffff80008b05ee64>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434
softirqs last  enabled at (0): [<ffff8000803ba294>] copy_process+0x1134/0x31ec kernel/fork.c:2119
softirqs last disabled at (0): [<0000000000000000>] 0x0
---[ end trace 0000000000000000 ]---
bc

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/19 00:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf45a62baffc 1c8c8cd8 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in bch2_recovery_pass_want_ratelimit
2025/09/16 09:14 upstream 46a51f4f5eda e2beed91 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in bch2_recovery_pass_want_ratelimit
2025/09/10 13:29 upstream 9dd1835ecda5 fdeaa69b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in bch2_recovery_pass_want_ratelimit
2025/08/31 11:18 upstream c8bc81a52d5a 807a3b61 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in bch2_recovery_pass_want_ratelimit
2025/10/18 23:27 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_recovery_pass_want_ratelimit
2025/10/17 18:46 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_recovery_pass_want_ratelimit
2025/10/15 07:14 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_recovery_pass_want_ratelimit
* Struck through repros no longer work on HEAD.