[syzbot] WARNING in reiserfs_setattr

Hello,

syzbot found the following issue on:

HEAD commit:    bbed346d5a96 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=14e5373a880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=3a4a45d2d827c1e
dashboard link: https://syzkaller.appspot.com/bug?extid=55b93dba2f5f385ebe4d
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

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e8e91bc79312/disk-bbed346d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c1cb3fb3b77e/vmlinux-bbed346d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]

------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 12653 at kernel/locking/mutex.c:582 __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582
Modules linked in:
CPU: 1 PID: 12653 Comm: syz-executor.1 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582
lr : __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582
sp : ffff800013983aa0
x29: ffff800013983b10 x28: ffff80000ee2b000 x27: 00000000ffffff00
x26: 0000000000000000 x25: 0000000000000046 x24: 0000000000000002
x23: ffff80000878a408 x22: 0000000000000000 x21: 0000000000000000
x20: 0000000000000000 x19: ffff000100e2d028 x18: 00000000000000c0
x17: ffff80000dd0b198 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000
x11: 00000000000044aa x10: ffff80001f44d000 x9 : 7d4b49b29f0bd400
x8 : 7d4b49b29f0bd400 x7 : 4e5241575f534b43 x6 : ffff80000819545c
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000028
Call trace:
 __mutex_lock_common+0x4c4/0xca8 kernel/locking/mutex.c:582
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 reiserfs_write_lock+0x3c/0x64 fs/reiserfs/lock.c:27
 reiserfs_setattr+0x298/0x7f4 fs/reiserfs/inode.c:3284
 notify_change+0x758/0x7f0 fs/attr.c:420
 chown_common+0x29c/0x388 fs/open.c:736
 do_fchownat+0xec/0x1a0 fs/open.c:767
 __do_sys_fchownat fs/open.c:782 [inline]
 __se_sys_fchownat fs/open.c:779 [inline]
 __arm64_sys_fchownat+0x30/0x44 fs/open.c:779
 __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+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
irq event stamp: 1633
hardirqs last  enabled at (1633): [<ffff800008223334>] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
hardirqs last  enabled at (1633): [<ffff800008223334>] ktime_get_coarse_real_ts64+0xfc/0x1bc kernel/time/timekeeping.c:2261
hardirqs last disabled at (1632): [<ffff8000082232c4>] seqcount_lockdep_reader_access include/linux/seqlock.h:101 [inline]
hardirqs last disabled at (1632): [<ffff8000082232c4>] ktime_get_coarse_real_ts64+0x8c/0x1bc kernel/time/timekeeping.c:2261
softirqs last  enabled at (1598): [<ffff80000801c33c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (1596): [<ffff80000801c308>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
Unable to handle kernel NULL pointer dereference at virtual address 000000000000003c
Mem abort info:
  ESR = 0x0000000096000006
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000006
  CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=000000013197f000
[000000000000003c] pgd=0800000140f65003, p4d=0800000140f65003, pud=0800000140ddf003, pmd=0000000000000000
Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 12653 Comm: syz-executor.1 Tainted: G        W          6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 00400005 (nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : owner_on_cpu include/linux/sched.h:2269 [inline]
pc : mutex_can_spin_on_owner kernel/locking/mutex.c:409 [inline]
pc : mutex_optimistic_spin+0x1c8/0x254 kernel/locking/mutex.c:452
lr : __mutex_lock_common+0x1b4/0xca8 kernel/locking/mutex.c:607
sp : ffff800013983a40
x29: ffff800013983a50 x28: ffff80000ee2b000 x27: ffff80000cb4f733
x26: 0000000000000000 x25: 0000000000000046 x24: ffff000100e2d090
x23: ffff80000878a408 x22: ffff80000d30c000 x21: 0000000000000000
x20: 0000000000000000 x19: ffff000100e2d028 x18: 00000000000000c0
x17: ffff80000dd0b198 x16: 0000000000000000 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000012 x12: 0000000000040000
x11: 00000000000044aa x10: ffff80000d30c000 x9 : 0000000000000003
x8 : 0000000000000008 x7 : 4e5241575f534b43 x6 : ffff80000878a408
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff000100e2d028
Call trace:
 mutex_can_spin_on_owner kernel/locking/mutex.c:408 [inline]
 mutex_optimistic_spin+0x1c8/0x254 kernel/locking/mutex.c:452
 __mutex_lock_common+0x1b4/0xca8 kernel/locking/mutex.c:607
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 reiserfs_write_lock+0x3c/0x64 fs/reiserfs/lock.c:27
 reiserfs_setattr+0x298/0x7f4 fs/reiserfs/inode.c:3284
 notify_change+0x758/0x7f0 fs/attr.c:420
 chown_common+0x29c/0x388 fs/open.c:736
 do_fchownat+0xec/0x1a0 fs/open.c:767
 __do_sys_fchownat fs/open.c:782 [inline]
 __se_sys_fchownat fs/open.c:779 [inline]
 __arm64_sys_fchownat+0x30/0x44 fs/open.c:779
 __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+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
Code: 37080148 f9400268 f27df108 54000080 (b9403509) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	37080148 	tbnz	w8, #1, 0x28
   4:	f9400268 	ldr	x8, [x19]
   8:	f27df108 	ands	x8, x8, #0xfffffffffffffff8
   c:	54000080 	b.eq	0x1c  // b.none
* 10:	b9403509 	ldr	w9, [x8, #52] <-- trapping instruction


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