[syzbot] [bcachefs?] kernel BUG in bch2_journal_pin_set

syzbot
2024-11-25T13:28:23Z

Hello,

syzbot found the following issue on:

HEAD commit: 9f16d5e6f220 Merge tag 'for-linus' of git://git.kernel.org..
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1411a530580000
kernel config: https://syzkaller.appspot.com/x/.config?x=e92fc420ca55fe33
dashboard link: https://syzkaller.appspot.com/bug?extid=3bd0834534ada7200422
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162325c0580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=112325c0580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c9f905470542/disk-9f16d5e6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5b4c9cc530ec/vmlinux-9f16d5e6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/e0f262e4c35e/bzImage-9f16d5e6.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/68d3db7c217d/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3bd0834534ada7200422@syzkaller.appspotmail.com

bucket 0:42 gen 0 data type btree has wrong dirty_sectors: got 0, should be 256, fixing
done
bcachefs (loop0): going read-write
bcachefs (loop0): journal_replay...
------------[ cut here ]------------
kernel BUG at fs/bcachefs/journal_reclaim.h:30!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 5839 Comm: syz-executor780 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:journal_seq_pin fs/bcachefs/journal_reclaim.h:30 [inline]
RIP: 0010:bch2_journal_pin_set_locked fs/bcachefs/journal_reclaim.c:389 [inline]
RIP: 0010:bch2_journal_pin_set+0x766/0x780 fs/bcachefs/journal_reclaim.c:449
Code: c1 0f 8c fe f9 ff ff 48 89 df e8 c5 28 c8 fd e9 f1 f9 ff ff e8 5b 71 60 fd 90 0f 0b e8 53 71 60 fd 90 0f 0b e8 4b 71 60 fd 90 <0f> 0b e8 43 71 60 fd 90 0f 0b e8 3b 71 60 fd 90 0f 0b e8 33 71 60
RSP: 0018:ffffc9000394ee50 EFLAGS: 00010293
RAX: ffffffff84356e75 RBX: 0000000000000000 RCX: ffff88802c313c00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff84356bc2 R09: fffff52000729db8
R10: dffffc0000000000 R11: fffff52000729db8 R12: ffff88802766c901
R13: ffff8880789ca500 R14: ffff88802766c940 R15: ffffffffffffffff
FS: 00005555718ec380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557704c1da48 CR3: 000000007a91c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
bch2_journal_pin_add fs/bcachefs/journal_reclaim.h:48 [inline]
bch2_btree_add_journal_pin fs/bcachefs/btree_trans_commit.c:274 [inline]
bch2_btree_insert_key_leaf+0x800/0xa90 fs/bcachefs/btree_trans_commit.c:306
bch2_trans_commit_write_locked fs/bcachefs/btree_trans_commit.c:820 [inline]
do_bch2_trans_commit fs/bcachefs/btree_trans_commit.c:900 [inline]
__bch2_trans_commit+0x7163/0x93c0 fs/bcachefs/btree_trans_commit.c:1121
bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline]
bch2_journal_replay+0x1a3a/0x2a40 fs/bcachefs/recovery.c:317
bch2_run_recovery_pass+0xf0/0x1e0 fs/bcachefs/recovery_passes.c:191
bch2_run_recovery_passes+0x3a7/0x880 fs/bcachefs/recovery_passes.c:244
bch2_fs_recovery+0x25cc/0x39d0 fs/bcachefs/recovery.c:861
bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1037
bch2_fs_get_tree+0xd68/0x1710 fs/bcachefs/fs.c:2170
vfs_get_tree+0x90/0x2b0 fs/super.c:1814
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4057 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc6f34c6dea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc6a712b88 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffc6a712ba0 RCX: 00007fc6f34c6dea
RDX: 0000000020000000 RSI: 0000000020000080 RDI: 00007ffc6a712ba0
RBP: 0000000000000004 R08: 00007ffc6a712be0 R09: 0000000000005983
R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000
R13: 00007ffc6a712be0 R14: 0000000000000003 R15: 0000000001000000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:journal_seq_pin fs/bcachefs/journal_reclaim.h:30 [inline]
RIP: 0010:bch2_journal_pin_set_locked fs/bcachefs/journal_reclaim.c:389 [inline]
RIP: 0010:bch2_journal_pin_set+0x766/0x780 fs/bcachefs/journal_reclaim.c:449
Code: c1 0f 8c fe f9 ff ff 48 89 df e8 c5 28 c8 fd e9 f1 f9 ff ff e8 5b 71 60 fd 90 0f 0b e8 53 71 60 fd 90 0f 0b e8 4b 71 60 fd 90 <0f> 0b e8 43 71 60 fd 90 0f 0b e8 3b 71 60 fd 90 0f 0b e8 33 71 60
RSP: 0018:ffffc9000394ee50 EFLAGS: 00010293
RAX: ffffffff84356e75 RBX: 0000000000000000 RCX: ffff88802c313c00
RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff84356bc2 R09: fffff52000729db8
R10: dffffc0000000000 R11: fffff52000729db8 R12: ffff88802766c901
R13: ffff8880789ca500 R14: ffff88802766c940 R15: ffffffffffffffff
FS: 00005555718ec380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557704c1da48 CR3: 000000007a91c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

---
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