[syzbot] [udf?] WARNING in __brelse (2)

syzbot
2023-03-01T16:54:08Z

Hello,

syzbot found the following issue on:

HEAD commit: 2ebd1fbb946d Merge branch 'for-next/core' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=144829a8c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=3519974f3f27816d
dashboard link: https://syzkaller.appspot.com/bug?extid=64d1c4bd2e3fa680321d
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/16985cc7a274/disk-2ebd1fbb.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fd3452567115/vmlinux-2ebd1fbb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c75510922212/Image-2ebd1fbb.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+64d1c4bd2e3fa680321d@syzkaller.appspotmail.com

el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
------------[ cut here ]------------
VFS: brelse: Trying to free free buffer
WARNING: CPU: 1 PID: 13690 at fs/buffer.c:1145 __brelse+0x84/0xd8 fs/buffer.c:1145
Modules linked in:
CPU: 1 PID: 13690 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-18300-g2ebd1fbb946d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __brelse+0x84/0xd8 fs/buffer.c:1145
lr : __brelse+0x84/0xd8 fs/buffer.c:1145
sp : ffff8000222f7600
x29: ffff8000222f7600 x28: ffff8000222f7760 x27: ffff000130521080
x26: ffff8000222f77b0 x25: 1ffff0000445ef00 x24: ffff0000dd9088d0
x23: ffff70000445eed8 x22: 1ffff0000445eee4 x21: ffff00013fc33d98
x20: 0000000000000000 x19: ffff00013fc33df8 x18: 1fffe0003689f976
x17: ffff800015b8d000 x16: ffff80001235d16c x15: 0000000000000000
x14: 1ffff00002b720af x13: dfff800000000000 x12: 0000000000040000
x11: 0000000000016792 x10: ffff80001ffaa000 x9 : 93de21cc8eb3a600
x8 : 93de21cc8eb3a600 x7 : ffff800008288c58 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80000aae9f90
x2 : ffff0001b44fcf08 x1 : 0000000100000000 x0 : 0000000000000027
Call trace:
__brelse+0x84/0xd8 fs/buffer.c:1145
brelse include/linux/buffer_head.h:326 [inline]
udf_rename+0xd1c/0x10b0 fs/udf/namei.c:1214
vfs_rename+0x9e0/0xe80 fs/namei.c:4779
do_renameat2+0x95c/0x100c fs/namei.c:4930
__do_sys_renameat2 fs/namei.c:4963 [inline]
__se_sys_renameat2 fs/namei.c:4960 [inline]
__arm64_sys_renameat2+0xe0/0xfc fs/namei.c:4960
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
irq event stamp: 7128
hardirqs last enabled at (7127): [<ffff800008288cf8>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1370 [inline]
hardirqs last enabled at (7127): [<ffff800008288cf8>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5055
hardirqs last disabled at (7128): [<ffff800012358d60>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (7094): [<ffff800008020ea8>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last enabled at (7094): [<ffff800008020ea8>] __do_softirq+0xd4c/0xfa4 kernel/softirq.c:600
softirqs last disabled at (7079): [<ffff80000802b4a4>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
---[ end trace 0000000000000000 ]---

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