linux-kernel - [syzbot] [f2fs?] WARNING in f2fs_delete

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Message-ID: <6740a00c.050a0220.363a1b.0144.GAE@google.com>
Date: Fri, 22 Nov 2024 07:15:24 -0800
From: syzbot <syzbot+35a21b6aade7af3c7b3a@...kaller.appspotmail.com>
To: chao@...nel.org, jaegeuk@...nel.org, 
	linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [f2fs?] WARNING in f2fs_delete_entry

Hello,

syzbot found the following issue on:

HEAD commit:    7b1d1d4cfac0 Merge remote-tracking branch 'iommu/arm/smmu'..
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=12978ec0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=dfe1e340fbee3d16
dashboard link: https://syzkaller.appspot.com/bug?extid=35a21b6aade7af3c7b3a
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12f31b78580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16978ec0580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/354fe38e2935/disk-7b1d1d4c.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/f12e0b1ef3fd/vmlinux-7b1d1d4c.xz
kernel image: https://storage.googleapis.com/syzbot-assets/291dbc519bb3/Image-7b1d1d4c.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/009d543e9698/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+35a21b6aade7af3c7b3a@...kaller.appspotmail.com

F2FS-fs (loop0): invalid crc value
F2FS-fs (loop0): Found nat_bits in checkpoint
F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6420 at fs/inode.c:336 drop_nlink+0xe4/0x138 fs/inode.c:336
Modules linked in:
CPU: 1 UID: 0 PID: 6420 Comm: syz-executor117 Not tainted 6.12.0-syzkaller-g7b1d1d4cfac0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : drop_nlink+0xe4/0x138 fs/inode.c:336
lr : drop_nlink+0xe4/0x138 fs/inode.c:336
sp : ffff8000a3d57930
x29: ffff8000a3d57930 x28: 0000000000000000 x27: dfff800000000000
x26: 0000000000000003 x25: fffffdffc363c040 x24: 1fffe0001bc77232
x23: 1fffe0001bc7723b x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000de3b91d8 x19: ffff0000de3b9190 x18: ffff8000a3d57520
x17: 000000000000d842 x16: ffff800080355c58 x15: 0000000000000001
x14: 1ffff00011f440c0 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700011f440c1 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000c2d80000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff8000933cf888 x4 : 0000000000000004 x3 : ffff8000804807cc
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 drop_nlink+0xe4/0x138 fs/inode.c:336 (P)
 drop_nlink+0xe4/0x138 fs/inode.c:336 (L)
 f2fs_i_links_write fs/f2fs/f2fs.h:3127 [inline]
 f2fs_drop_nlink+0xd0/0x2ec fs/f2fs/dir.c:822
 f2fs_delete_entry+0x9c8/0xcb0 fs/f2fs/dir.c:886
 f2fs_unlink+0x48c/0xad8 fs/f2fs/namei.c:572
 vfs_unlink+0x2f0/0x534 fs/namei.c:4469
 do_unlinkat+0x4d0/0x700 fs/namei.c:4533
 __do_sys_unlinkat fs/namei.c:4576 [inline]
 __se_sys_unlinkat fs/namei.c:4569 [inline]
 __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4569
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 212352
hardirqs last  enabled at (212351): [<ffff80008047a5a4>] seqcount_lockdep_reader_access+0x80/0x104 include/linux/seqlock.h:74
hardirqs last disabled at (212352): [<ffff80008b4b302c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (212312): [<ffff80008020396c>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last  enabled at (212312): [<ffff80008020396c>] handle_softirqs+0xa38/0xbf8 kernel/softirq.c:582
softirqs last disabled at (212299): [<ffff800080020db4>] __do_softirq+0x14/0x20 kernel/softirq.c:588
---[ end trace 0000000000000000 ]---


---
This report is generated by a bot. It may contain errors.
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