loop9: detected capacity change from 0 to 32768
------------[ cut here ]------------
Oops: general protection fault, probably for non-canonical address 0xdffffc00f169a2b0: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x000000078b4d1580-0x000000078b4d1587]
CPU: 1 UID: 0 PID: 20715 Comm: syz.9.1686 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:string_nocheck lib/vsprintf.c:655 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:737
Code: 77 0a f7 eb b3 41 c1 fd 10 4c 89 6c 24 10 49 8d 5d ff 45 31 ed 4b 8d 3c 2c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 60 4b 8d 2c 2e 47 0f b6 3c 2c 31 ff 44 89 fe
RSP: 0018:ffffc900044f6d20 EFLAGS: 00010002
RAX: 00000000f169a2b0 RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: 0000000000000002 RSI: 00000000ffff0a00 RDI: 000000078b4d1580
RBP: ffffffff8d6c5a37 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000007 R12: 000000078b4d1580
R13: 0000000000000000 R14: ffffc900044f6f33 R15: 0000000000000010
FS:  00007fd1662166c0(0000) GS:ffff888126435000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ba0a9 CR3: 0000000031636000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 vsnprintf+0x739/0xee0 lib/vsprintf.c:2948
 vprintk_store+0x3dc/0xd80 kernel/printk/printk.c:2307
 vprintk_emit+0x192/0x560 kernel/printk/printk.c:2455
 __warn_printf lib/bug.c:188 [inline]
 __report_bug+0x38d/0x540 lib/bug.c:241
 report_bug_entry+0x19a/0x290 lib/bug.c:266
 handle_bug+0xce/0x200 arch/x86/kernel/traps.c:430
 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:489
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:616
RIP: 0010:look_up_lock_class+0x9a/0x110 kernel/locking/lockdep.c:939
Code: 00 00 49 3b 46 18 0f 84 82 00 00 00 49 81 3e f0 73 12 93 74 79 48 8d 3d 84 74 49 04 49 8b 16 49 8b 76 18 48 8b 8b b8 00 00 00 <67> 48 0f b9 3a eb 5d 90 89 f3 e8 77 10 77 f9 e8 52 ee 7f f6 48 c7
RSP: 0018:ffffc900044f7310 EFLAGS: 00010006
RAX: ffffffff8b4d1580 RBX: ffffffff92f7a208 RCX: ffffffff8b4d1580
RDX: ffffffff9959f980 RSI: 000000078b4d1580 RDI: ffffffff8f6d9b40
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888062a588a0
R10: dffffc0000000000 R11: fffffbfff1ed4e37 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888062a588a0 R15: ffffffff9959f980
 register_lock_class+0x31/0x2e0 kernel/locking/lockdep.c:1294
 __lock_acquire+0xad/0x2cf0 kernel/locking/lockdep.c:5112
 lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock_irqsave+0x40/0x60 kernel/locking/spinlock.c:162
 rt_mutex_slowtrylock kernel/locking/rtmutex.c:1391 [inline]
 rt_mutex_try_acquire kernel/locking/rtmutex.c:320 [inline]
 __rt_mutex_lock kernel/locking/rtmutex.c:1812 [inline]
 rwbase_write_lock+0xb6/0x730 kernel/locking/rwbase_rt.c:244
 i_mmap_lock_write include/linux/fs.h:512 [inline]
 vma_link_file mm/vma.c:1817 [inline]
 __mmap_new_vma mm/vma.c:2555 [inline]
 __mmap_region mm/vma.c:2759 [inline]
 mmap_region+0x1ce2/0x2230 mm/vma.c:2837
 do_mmap+0xc2f/0x10c0 mm/mmap.c:559
 vm_mmap_pgoff+0x2cc/0x4f0 mm/util.c:581
 ksys_mmap_pgoff+0x4e8/0x720 mm/mmap.c:605
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd167fbc819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd166216028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fd168235fa0 RCX: 00007fd167fbc819
RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000200000000000
RBP: 00007fd168052c91 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd168236038 R14: 00007fd168235fa0 R15: 00007ffe3e448e38
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:string_nocheck lib/vsprintf.c:655 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:737
Code: 77 0a f7 eb b3 41 c1 fd 10 4c 89 6c 24 10 49 8d 5d ff 45 31 ed 4b 8d 3c 2c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 60 4b 8d 2c 2e 47 0f b6 3c 2c 31 ff 44 89 fe
RSP: 0018:ffffc900044f6d20 EFLAGS: 00010002
RAX: 00000000f169a2b0 RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: 0000000000000002 RSI: 00000000ffff0a00 RDI: 000000078b4d1580
RBP: ffffffff8d6c5a37 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000007 R12: 000000078b4d1580
R13: 0000000000000000 R14: ffffc900044f6f33 R15: 0000000000000010
FS:  00007fd1662166c0(0000) GS:ffff888126435000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ba0a9 CR3: 0000000031636000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	77 0a                	ja     0xc
   2:	f7 eb                	imul   %ebx
   4:	b3 41                	mov    $0x41,%bl
   6:	c1 fd 10             	sar    $0x10,%ebp
   9:	4c 89 6c 24 10       	mov    %r13,0x10(%rsp)
   e:	49 8d 5d ff          	lea    -0x1(%r13),%rbx
  12:	45 31 ed             	xor    %r13d,%r13d
  15:	4b 8d 3c 2c          	lea    (%r12,%r13,1),%rdi
  19:	48 89 f8             	mov    %rdi,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	75 60                	jne    0x92
  32:	4b 8d 2c 2e          	lea    (%r14,%r13,1),%rbp
  36:	47 0f b6 3c 2c       	movzbl (%r12,%r13,1),%r15d
  3b:	31 ff                	xor    %edi,%edi
  3d:	44 89 fe             	mov    %r15d,%esi