loop4: detected capacity change from 0 to 64
BUG: unable to handle page fault for address: 000000078ccbc938
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 53b03067 P4D 53b03067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 26459 Comm: syz-executor.4 Not tainted 6.6.0-rc1-syzkaller-00115-g9fdfb15a3dbf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:__raw_callee_save___kvm_vcpu_is_preempted+0x4/0x20
Code: 21 10 01 c0 be 03 00 00 00 e8 e8 41 39 03 bf 21 10 01 c0 be 0e 00 00 00 e9 d9 41 39 03 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <48> 8b 04 fd 40 c9 cb 8c 80 b8 d0 83 02 00 00 0f 95 c0 c3 66 0f 1f
RSP: 0018:ffffc9000a2c7560 EFLAGS: 00010286
RAX: 1ffffffff1a33707 RBX: ffff88807ee90028 RCX: ffffffff816bf4bd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: 00000000ffffffff R08: ffff88807ee9002f R09: 1ffff1100fdd2005
R10: dffffc0000000000 R11: ffffed100fdd2006 R12: ffff888028632014
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f88a26966c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000078ccbc938 CR3: 00000000583a2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pv_vcpu_is_preempted arch/x86/include/asm/paravirt.h:608 [inline]
 vcpu_is_preempted arch/x86/include/asm/qspinlock.h:63 [inline]
 owner_on_cpu include/linux/sched.h:2316 [inline]
 mutex_can_spin_on_owner kernel/locking/mutex.c:409 [inline]
 mutex_optimistic_spin+0x17b/0x2b0 kernel/locking/mutex.c:452
 __mutex_lock_common+0x20a/0x2530 kernel/locking/mutex.c:607
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
 reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
 reiserfs_lookup+0x162/0x580 fs/reiserfs/namei.c:364
 lookup_open fs/namei.c:3473 [inline]
 open_last_lookups fs/namei.c:3563 [inline]
 path_openat+0x11f1/0x3180 fs/namei.c:3793
 do_filp_open+0x234/0x490 fs/namei.c:3823
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f88a187b6e0
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 09 82 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 5c 82 02 00 8b 44
RSP: 002b:00007f88a2695e70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000010000 RCX: 00007f88a187b6e0
RDX: 0000000000010000 RSI: 0000000020002380 RDI: 00000000ffffff9c
RBP: 0000000020002380 R08: 0000000000000000 R09: 0000000000800001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000020002380
R13: 00007f88a2695f40 R14: 00000000000002d3 R15: 00000000200023c0
 </TASK>
Modules linked in:
CR2: 000000078ccbc938
---[ end trace 0000000000000000 ]---
RIP: 0010:__raw_callee_save___kvm_vcpu_is_preempted+0x4/0x20
Code: 21 10 01 c0 be 03 00 00 00 e8 e8 41 39 03 bf 21 10 01 c0 be 0e 00 00 00 e9 d9 41 39 03 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa <48> 8b 04 fd 40 c9 cb 8c 80 b8 d0 83 02 00 00 0f 95 c0 c3 66 0f 1f
RSP: 0018:ffffc9000a2c7560 EFLAGS: 00010286
RAX: 1ffffffff1a33707 RBX: ffff88807ee90028 RCX: ffffffff816bf4bd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 00000000ffffffff
RBP: 00000000ffffffff R08: ffff88807ee9002f R09: 1ffff1100fdd2005
R10: dffffc0000000000 R11: ffffed100fdd2006 R12: ffff888028632014
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f88a26966c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000078ccbc938 CR3: 00000000583a2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	21 10                	and    %edx,(%rax)
   2:	01 c0                	add    %eax,%eax
   4:	be 03 00 00 00       	mov    $0x3,%esi
   9:	e8 e8 41 39 03       	call   0x33941f6
   e:	bf 21 10 01 c0       	mov    $0xc0011021,%edi
  13:	be 0e 00 00 00       	mov    $0xe,%esi
  18:	e9 d9 41 39 03       	jmp    0x33941f6
  1d:	66 0f 1f 84 00 00 00 	nopw   0x0(%rax,%rax,1)
  24:	00 00
  26:	f3 0f 1e fa          	endbr64
* 2a:	48 8b 04 fd 40 c9 cb 	mov    -0x733436c0(,%rdi,8),%rax <-- trapping instruction
  31:	8c
  32:	80 b8 d0 83 02 00 00 	cmpb   $0x0,0x283d0(%rax)
  39:	0f 95 c0             	setne  %al
  3c:	c3                   	ret
  3d:	66                   	data16
  3e:	0f                   	.byte 0xf
  3f:	1f                   	(bad)