linux-kernel - [syzbot] [xfs?] BUG: corrupted list in xfs_trans_del

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Message-ID: <00000000000092558d05f0f4b219@google.com>
Date:   Thu, 29 Dec 2022 02:10:42 -0800
From:   syzbot <syzbot+5d3521f1abbb5c599e55@...kaller.appspotmail.com>
To:     dchinner@...hat.com, djwong@...nel.org,
        linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: [syzbot] [xfs?] BUG: corrupted list in xfs_trans_del_item

Hello,

syzbot found the following issue on:

HEAD commit:    a5541c0811a0 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=10dd01ac480000
kernel config:  https://syzkaller.appspot.com/x/.config?x=cbd4e584773e9397
dashboard link: https://syzkaller.appspot.com/bug?extid=5d3521f1abbb5c599e55
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13bf9550480000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=146deeb0480000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4b7702208fb9/disk-a5541c08.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9ec0153ec051/vmlinux-a5541c08.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6f8725ad290a/Image-a5541c08.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/0b962d567fb3/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+5d3521f1abbb5c599e55@...kaller.appspotmail.com

XFS (loop0): Metadata corruption detected at xfs_btree_lookup_get_block+0x220/0x2b0 fs/xfs/libxfs/xfs_btree.c:1846, xfs_refcountbt block 0x18
XFS (loop0): Unmount and run xfs_repair
list_del corruption, ffff0000c66a53f8->next is NULL
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:50!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 3071 Comm: syz-executor314 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __list_del_entry_valid+0x70/0xd0 lib/list_debug.c:49
lr : __list_del_entry_valid+0x70/0xd0 lib/list_debug.c:49
sp : ffff80000fedb8e0
x29: ffff80000fedb8e0 x28: ffff0000c71ab480 x27: 0000000000000000
x26: ffff0000c970b400 x25: 0000000000000000 x24: 000000000000000d
x23: ffff0000c66a5128 x22: ffff0000c66a5190 x21: 0000000000000000
x20: ffff0000c66a53f8 x19: ffff0000c66a53e8 x18: 00000000000000c0
x17: ffff80000dda8198 x16: ffff80000dbe6158 x15: ffff0000c71ab480
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c71ab480
x11: ff808000081c4d64 x10: 0000000000000000 x9 : 0c68720d3549f800
x8 : 0c68720d3549f800 x7 : ffff80000c091ebc x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000033
Call trace:
 __list_del_entry_valid+0x70/0xd0 lib/list_debug.c:49
 __list_del_entry include/linux/list.h:134 [inline]
 list_del_init include/linux/list.h:206 [inline]
 xfs_trans_del_item+0x38/0x94 fs/xfs/xfs_trans.c:696
 xfs_trans_brelse+0xa0/0xdc fs/xfs/xfs_trans_buf.c:385
 xfs_btree_del_cursor+0x64/0x134 fs/xfs/libxfs/xfs_btree.c:440
 xfs_refcount_recover_cow_leftovers+0x150/0x344 fs/xfs/libxfs/xfs_refcount.c:1834
 xfs_reflink_recover_cow+0x5c/0x100 fs/xfs/xfs_reflink.c:930
 xlog_recover_finish+0x310/0x3bc fs/xfs/xfs_log_recover.c:3493
 xfs_log_mount_finish+0xd4/0x250 fs/xfs/xfs_log.c:827
 xfs_mountfs+0x7e4/0xb38 fs/xfs/xfs_mount.c:919
 xfs_fs_fill_super+0x804/0x880 fs/xfs/xfs_super.c:1666
 get_tree_bdev+0x1e8/0x2a0 fs/super.c:1324
 xfs_fs_get_tree+0x28/0x38 fs/xfs/xfs_super.c:1713
 vfs_get_tree+0x40/0x140 fs/super.c:1531
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040
 path_mount+0x358/0x890 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197
 el0_svc+0x58/0x150 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:584
Code: d65f03c0 b001b740 91013000 94aa89fa (d4210000) 
---[ end trace 0000000000000000 ]---


---
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