BUG: unable to handle kernel paging request in flush_commit_list

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e3cb714fb489 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=16ffd17b880000
kernel config: https://syzkaller.appspot.com/x/.config?x=ec7118319bfb771e
dashboard link: https://syzkaller.appspot.com/bug?extid=ed7aad657cefce492439
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
CC: [bvana...@acm.org damien...@opensource.wdc.com jla...@kernel.org linux-...@vger.kernel.org reiserf...@vger.kernel.org wi...@infradead.org yi.z...@huawei.com]

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/832eb1866f2c/disk-e3cb714f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/5fd572b7d96d/vmlinux-e3cb714f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/34c82908beda/Image-e3cb714f.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ed7aad...@syzkaller.appspotmail.com

Unable to handle kernel paging request at virtual address ffff800015c2d1f0
Mem abort info:
ESR = 0x0000000096000007
EC = 0x25: DABT (current EL), IL = 32 bits
SET = 0, FnV = 0
EA = 0, S1PTW = 0
FSC = 0x07: level 3 translation fault
Data abort info:
ISV = 0, ISS = 0x00000007
CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001c54dc000
[ffff800015c2d1f0] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=1000000107766003, pte=0000000000000000
Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 17940 Comm: syz-executor.2 Not tainted 6.1.0-rc7-syzkaller-33097-ge3cb714fb489 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : atomic_read include/linux/atomic/atomic-instrumented.h:28 [inline]
pc : flush_older_commits fs/reiserfs/journal.c:900 [inline]
pc : flush_commit_list+0xd4/0xa34 fs/reiserfs/journal.c:997
lr : flush_commit_list+0xb0/0xa34 fs/reiserfs/journal.c:996
sp : ffff800015e9bc90
x29: ffff800015e9bcb0 x28: ffff8000162bd2b8 x27: 0000000000000000
x26: 0000000000000000 x25: 0000000000000001 x24: 0000000000ffff01
x23: 0000000000ffff01 x22: ffff8000162bd000 x21: ffff800015c2d2b8
x20: ffff0001123ea400 x19: ffff000111f89000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80000dbe6158 x15: ffff0001129a9a40
x14: 0000000000000138 x13: 00000000ffffffff x12: ffff0001129a9a40
x11: ff80800008793e54 x10: 0000000000000000 x9 : ffff0001129a9a40
x8 : ffff8000162bd000 x7 : ffff80000879d2c8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
flush_commit_list+0xd4/0xa34 fs/reiserfs/journal.c:997
__commit_trans_jl fs/reiserfs/journal.c:3898 [inline]
reiserfs_commit_for_inode+0x1fc/0x48c fs/reiserfs/journal.c:3922
reiserfs_dir_fsync+0x78/0xb8 fs/reiserfs/dir.c:43
vfs_fsync_range fs/sync.c:188 [inline]
vfs_fsync fs/sync.c:202 [inline]
do_fsync fs/sync.c:212 [inline]
__do_sys_fdatasync fs/sync.c:225 [inline]
__se_sys_fdatasync fs/sync.c:223 [inline]
__arm64_sys_fdatasync+0x60/0xb8 fs/sync.c:223
__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: 910ae11c eb1c02bf 540009a0 b940ba97 (b85382b9)
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
0: 910ae11c add x28, x8, #0x2b8
4: eb1c02bf cmp x21, x28
8: 540009a0 b.eq 0x13c // b.none
c: b940ba97 ldr w23, [x20, #184]
* 10: b85382b9 ldur w25, [x21, #-200] <-- trapping instruction


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.