[v6.6] WARNING in dbAdjTree

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: c2603c511feb Linux 6.6.93
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1415790c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=486bade17c8c30b9
dashboard link: https://syzkaller.appspot.com/bug?extid=a69dfcbd991f4b75fc50
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8754f950a6e7/disk-c2603c51.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3b19332dbf63/vmlinux-c2603c51.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cb245e836038/bzImage-c2603c51.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a69dfc...@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 111 at fs/jfs/jfs_dmap.c:2882 dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2882
Modules linked in:
CPU: 0 PID: 111 Comm: jfsCommit Not tainted 6.6.93-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2882
Code: e8 6d 32 e0 fe e9 5a ff ff ff e8 d3 8d 87 fe eb 05 e8 cc 8d 87 fe 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b8 8d 87 fe <0f> 0b eb e8 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ee fb ff ff 4c
RSP: 0018:ffffc90002647ac8 EFLAGS: 00010293
RAX: ffffffff82fe0928 RBX: ffff888068b37010 RCX: ffff88801a301e00
RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056
RBP: 0000000000020056 R08: ffffea0001a2cdc7 R09: 1ffffd40003459b8
R10: dffffc0000000000 R11: fffff940003459b9 R12: ffff888068b37018
R13: dffffc0000000000 R14: 0000000000000004 R15: 0000000000000155
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557b1f25c8 CR3: 000000002f41e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
dbJoin+0x238/0x300 fs/jfs/jfs_dmap.c:2850
dbFreeBits+0x4e2/0xdb0 fs/jfs/jfs_dmap.c:2347
dbFreeDmap fs/jfs/jfs_dmap.c:2096 [inline]
dbFree+0x332/0x650 fs/jfs/jfs_dmap.c:413
txFreeMap+0x7ff/0xde0 fs/jfs/jfs_txnmgr.c:2534
txUpdateMap+0x306/0x890 fs/jfs/jfs_txnmgr.c:-1
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2732
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>


---
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If the report is already addressed, let syzbot know by replying with:
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: c2603c511feb Linux 6.6.93
git tree: linux-6.6.y

console output: https://syzkaller.appspot.com/x/log.txt?x=1299f90c580000

kernel config: https://syzkaller.appspot.com/x/.config?x=486bade17c8c30b9
dashboard link: https://syzkaller.appspot.com/bug?extid=a69dfcbd991f4b75fc50
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11d1de82580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17f6750c580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8754f950a6e7/disk-c2603c51.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3b19332dbf63/vmlinux-c2603c51.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cb245e836038/bzImage-c2603c51.xz

mounted in repro: https://storage.googleapis.com/syzbot-assets/767652a5d885/mount_0.gz
fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=13f6750c580000)

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a69dfc...@syzkaller.appspotmail.com

------------[ cut here ]------------

WARNING: CPU: 1 PID: 112 at fs/jfs/jfs_dmap.c:2882 dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2882
Modules linked in:
CPU: 1 PID: 112 Comm: jfsCommit Not tainted 6.6.93-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:dbAdjTree+0x448/0x4d0 fs/jfs/jfs_dmap.c:2882
Code: e8 6d 32 e0 fe e9 5a ff ff ff e8 d3 8d 87 fe eb 05 e8 cc 8d 87 fe 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b8 8d 87 fe <0f> 0b eb e8 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ee fb ff ff 4c

RSP: 0000:ffffc90002ce7ac8 EFLAGS: 00010293
RAX: ffffffff82fe0928 RBX: ffff88802e100010 RCX: ffff888018f0bc00

RDX: 0000000000000000 RSI: 0000000000000155 RDI: 0000000000020056

RBP: 0000000000020056 R08: ffffea0000b84007 R09: 1ffffd4000170800
R10: dffffc0000000000 R11: fffff94000170801 R12: ffff88802e100018

R13: dffffc0000000000 R14: 0000000000000004 R15: 0000000000000155

FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: 00007f9b2c045000 CR3: 0000000078435000 CR4: 00000000003506e0

DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
dbJoin+0x238/0x300 fs/jfs/jfs_dmap.c:2850
dbFreeBits+0x4e2/0xdb0 fs/jfs/jfs_dmap.c:2347
dbFreeDmap fs/jfs/jfs_dmap.c:2096 [inline]
dbFree+0x332/0x650 fs/jfs/jfs_dmap.c:413
txFreeMap+0x7ff/0xde0 fs/jfs/jfs_txnmgr.c:2534
txUpdateMap+0x306/0x890 fs/jfs/jfs_txnmgr.c:-1
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2732
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>


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