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kernel BUG in bch2_journal_noflush_seq

Status: upstream: reported C repro on 2024/07/10 20:55
Subsystems: bcachefs
[Documentation on labels]
Reported-by: syzbot+85700120f75fc10d4e18@syzkaller.appspotmail.com
Fix commit: bcachefs: Check for bucket journal seq in the future
Patched on: [ci-upstream-linux-next-kasan-gce-root], missing on: [ci-qemu-gce-upstream-auto ci-qemu-native-arm64-kvm ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm32 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-snapshot-upstream-root ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-arm64 ci-upstream-gce-leak ci-upstream-kasan-badwrites-root ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-kmsan-gce-386-root ci-upstream-kmsan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-fs ci2-upstream-kcsan-gce ci2-upstream-usb]
First crash: 150d, last: 2h39m
Cause bisection: introduced by (bisect log) :
commit f7643bc9749f270d487c32dc35b578575bf1adb0
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date: Wed Apr 17 05:26:02 2024 +0000

  bcachefs: make btree read errors silent during scan

Crash: kernel BUG in bch2_journal_noflush_seq (log)
Repro: C syz .config
  
Fix bisection: fixed by (bisect log) :
commit 2744e5c9eb1a1090b5f61c955e934c70bfe6b04c
Author: Kent Overstreet <kent.overstreet@linux.dev>
Date: Wed Dec 27 23:31:46 2023 +0000

  bcachefs: KEY_TYPE_accounting

  
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bcachefs?] kernel BUG in bch2_journal_noflush_seq 0 (3) 2024/11/28 22:12
▶ ▼ Last patch testing requests (3)
Created Duration User Patch Repo Result
2024/10/08 15:40 13m retest repro upstream report log
2024/10/07 16:55 15m retest repro upstream report log
2024/07/20 21:00 47m retest repro upstream OK log

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/bcachefs/journal.c:105!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 2929 Comm: kworker/u8:9 Not tainted 6.11.0-syzkaller-08481-g88264981f208 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: btree_update btree_interior_update_work
RIP: 0010:journal_seq_to_buf fs/bcachefs/journal.c:105 [inline]
RIP: 0010:bch2_journal_noflush_seq+0x320/0x330 fs/bcachefs/journal.c:804
Code: e8 75 dd 5c fd 48 8b 3c 24 e8 ac 1e 8b 07 44 89 f0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 51 dd 5c fd 90 <0f> 0b e8 49 dd 5c fd 90 0f 0b 66 0f 1f 44 00 00 90 90 90 90 90 90
RSP: 0018:ffffc90009606ff8 EFLAGS: 00010293
RAX: ffffffff8437dc0f RBX: 0000000000000008 RCX: ffff88802f241e00
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: ffff88807654a9c0 R08: ffffffff8437da69 R09: 1ffff1100eca9537
R10: dffffc0000000000 R11: ffffed100eca9538 R12: ffff88807654a488
R13: dffffc0000000000 R14: 0000040000000001 R15: 0000000000000009
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f50bbcc0c8 CR3: 0000000079e90000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_trigger_alloc+0x1a10/0x4090 fs/bcachefs/alloc_background.c:932
 bch2_key_trigger fs/bcachefs/bkey_methods.h:87 [inline]
 run_one_mem_trigger+0x81f/0xc10 fs/bcachefs/btree_trans_commit.c:472
 bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:727 [inline]
 do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:861 [inline]
 __bch2_trans_commit+0x5547/0x90d0 fs/bcachefs/btree_trans_commit.c:1116
 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
 btree_update_nodes_written fs/bcachefs/btree_update_interior.c:723 [inline]
 btree_interior_update_work+0x1492/0x2b00 fs/bcachefs/btree_update_interior.c:861
 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:journal_seq_to_buf fs/bcachefs/journal.c:105 [inline]
RIP: 0010:bch2_journal_noflush_seq+0x320/0x330 fs/bcachefs/journal.c:804
Code: e8 75 dd 5c fd 48 8b 3c 24 e8 ac 1e 8b 07 44 89 f0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 51 dd 5c fd 90 <0f> 0b e8 49 dd 5c fd 90 0f 0b 66 0f 1f 44 00 00 90 90 90 90 90 90
RSP: 0018:ffffc90009606ff8 EFLAGS: 00010293
RAX: ffffffff8437dc0f RBX: 0000000000000008 RCX: ffff88802f241e00
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000008
RBP: ffff88807654a9c0 R08: ffffffff8437da69 R09: 1ffff1100eca9537
R10: dffffc0000000000 R11: ffffed100eca9538 R12: ffff88807654a488
R13: dffffc0000000000 R14: 0000040000000001 R15: 0000000000000009
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f50bbcc0c8 CR3: 0000000079e90000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (55):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/22 11:32 upstream 88264981f208 6f888b75 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in bch2_journal_noflush_seq
2024/09/17 03:54 upstream a430d95c5efa c673ca06 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/07/06 20:46 upstream 1dd28064d416 2a40360c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs kernel BUG in bch2_journal_noflush_seq
2024/12/04 10:56 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 09:49 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 08:14 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 07:04 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 06:02 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 04:34 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 03:32 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 02:26 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/04 01:55 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/03 20:17 upstream ceb8bf2ceaa7 330db277 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/03 17:05 upstream cdd30ebb1b9f 330db277 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/03 03:10 upstream cdd30ebb1b9f bb326ffb .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/02 20:54 upstream e70140ba0d2b b499ea68 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/01 11:13 upstream bcc8eda6d349 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/12/01 01:57 upstream d8b78066f4c9 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/30 23:13 upstream d8b78066f4c9 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/30 14:36 upstream 2ba9f676d0a2 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/30 13:02 upstream 2ba9f676d0a2 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/30 10:50 upstream 2ba9f676d0a2 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/29 19:54 upstream 7af08b57bcb9 b5d2be89 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/29 05:10 upstream 65ae975e97d5 5df23865 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/28 15:08 upstream b86545e02e8c 5df23865 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/27 06:49 upstream 445d9f05fa14 52b38cc1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/27 03:57 upstream 445d9f05fa14 52b38cc1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/26 21:34 upstream 7eef7e306d3c e9a9a9f2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/26 16:02 upstream 7eef7e306d3c e9a9a9f2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/25 08:13 upstream 9f16d5e6f220 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/25 08:02 upstream 9f16d5e6f220 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/24 19:55 upstream 9f16d5e6f220 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/24 11:10 upstream 9f16d5e6f220 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/23 20:03 upstream 228a1157fb9f 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/23 10:42 upstream 06afb0f36106 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/23 05:53 upstream 06afb0f36106 68da6d95 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/22 01:39 upstream 43fb83c17ba2 4b25d554 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/20 15:11 upstream bf9aa14fc523 4fca1650 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/20 15:11 upstream bf9aa14fc523 4fca1650 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/12 09:59 upstream 2d5404caa8c7 75bb1b32 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/07 06:02 upstream 7758b206117d df3dc63b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/11/05 08:55 upstream 557329bcecc2 509da429 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/10/27 00:49 upstream 850925a8133c 65e8686b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/10/20 12:32 upstream 715ca9dd687f cd6fc0a3 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/09/23 16:54 upstream de5cb0dcb74c 49f9c2d2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/09/17 02:48 upstream a430d95c5efa c673ca06 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/09/15 20:15 upstream d42f7708e27c 08d8a733 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in bch2_journal_noflush_seq
2024/07/28 12:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci c912bf709078 46eb10b7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 kernel BUG in bch2_journal_noflush_seq
* Struck through repros no longer work on HEAD.