linux-kernel - [syzbot] [btrfs?] WARNING in btrfs

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Message-ID: <67677766.050a0220.226966.0019.GAE@google.com>
Date: Sat, 21 Dec 2024 18:20:22 -0800
From: syzbot <syzbot+882cfd52ad141a668d9a@...kaller.appspotmail.com>
To: clm@...com, dsterba@...e.com, josef@...icpanda.com, 
	linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [btrfs?] WARNING in btrfs_rename2

Hello,

syzbot found the following issue on:

HEAD commit:    59dbb9d81adf Merge tag 'xsa465+xsa466-6.13-tag' of git://g..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1755d730580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6a2b862bf4a5409f
dashboard link: https://syzkaller.appspot.com/bug?extid=882cfd52ad141a668d9a
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

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

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-59dbb9d8.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e0cc89779297/vmlinux-59dbb9d8.xz
kernel image: https://storage.googleapis.com/syzbot-assets/5e6c895062cb/bzImage-59dbb9d8.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+882cfd52ad141a668d9a@...kaller.appspotmail.com

------------[ cut here ]------------
BTRFS: Transaction aborted (error -2)
WARNING: CPU: 0 PID: 5321 at fs/btrfs/inode.c:8298 btrfs_rename fs/btrfs/inode.c:8298 [inline]
WARNING: CPU: 0 PID: 5321 at fs/btrfs/inode.c:8298 btrfs_rename2+0x2ac6/0x2b90 fs/btrfs/inode.c:8377
Modules linked in:
CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:btrfs_rename fs/btrfs/inode.c:8298 [inline]
RIP: 0010:btrfs_rename2+0x2ac6/0x2b90 fs/btrfs/inode.c:8377
Code: ff ff 48 8d bc 24 d0 01 00 00 e8 75 81 46 fe e9 79 ec ff ff e8 eb 18 e0 fd 90 48 c7 c7 80 99 4b 8c 44 89 fe e8 9b bc a0 fd 90 <0f> 0b 90 90 e9 ee f9 ff ff e8 cc 18 e0 fd 90 48 c7 c7 80 99 4b 8c
RSP: 0018:ffffc9000d447680 EFLAGS: 00010246
RAX: b49777bc4d744c00 RBX: ffff888052f2c001 RCX: 0000000000100000
RDX: ffffc9000eddb000 RSI: 000000000000186c RDI: 000000000000186d
RBP: ffffc9000d447a90 R08: ffffffff81601a42 R09: fffffbfff1cfa210
R10: dffffc0000000000 R11: fffffbfff1cfa210 R12: ffff8880448959a0
R13: 1ffff11008912b34 R14: 0000000000000000 R15: 00000000fffffffe
FS:  00007f28b26106c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f28b260ffe0 CR3: 000000003fe4c000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_rename+0xbdb/0xf00 fs/namei.c:5067
 do_renameat2+0xd94/0x13f0 fs/namei.c:5224
 __do_sys_rename fs/namei.c:5271 [inline]
 __se_sys_rename fs/namei.c:5269 [inline]
 __x64_sys_rename+0x82/0x90 fs/namei.c:5269
 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: 0033:0x7f28b1785d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f28b2610038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f28b1976080 RCX: 00007f28b1785d29
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000080
RBP: 00007f28b1801a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f28b1976080 R15: 00007ffcc9517458
 </TASK>


---
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