loop6: detected capacity change from 0 to 32768
------------[ cut here ]------------
Oops: general protection fault, probably for non-canonical address 0xdffffc01116bae68: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x000000088b5d7340-0x000000088b5d7347]
CPU: 1 UID: 0 PID: 392 Comm: syz.6.3446 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:string_nocheck lib/vsprintf.c:655 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:737
Code: 69 0c 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:ffffc90005abf1a0 EFLAGS: 00010002
RAX: 00000001116bae68 RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: 0000000000000002 RSI: 00000000ffff0a00 RDI: 000000088b5d7340
RBP: ffffffff8d6bafdb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000007 R12: 000000088b5d7340
R13: 0000000000000000 R14: ffffc90005abf3b3 R15: 0000000000000010
FS:  00007f763585e6c0(0000) GS:ffff888126442000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb06d6bc000 CR3: 000000008ffea000 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:190 [inline]
 __report_bug+0x38d/0x540 lib/bug.c:244
 report_bug_entry+0x19a/0x290 lib/bug.c:269
 handle_bug+0xca/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 a3 11 93 74 79 48 8d 3d 04 70 4b 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 87 f9 77 f9 e8 92 0e 82 f6 48 c7
RSP: 0018:ffffc90005abf798 EFLAGS: 00010006
RAX: ffffffff8b5d7340 RBX: ffffffff92f8a470 RCX: ffffffff8b5d7340
RDX: ffffffff9960c2e0 RSI: 000000088b5d7340 RDI: ffffffff8f6d56c0
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888040b61c60
R10: ffffc90005abfaa0 R11: fffff52000b57f56 R12: 0000000000000001
R13: 0000000000000001 R14: ffff888040b61c60 R15: ffffffff9960c2e0
 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
 down_read+0x97/0x200 kernel/locking/rwsem.c:1537
 i_mmap_lock_read include/linux/fs.h:532 [inline]
 unmap_mapping_pages mm/memory.c:4329 [inline]
 unmap_mapping_range+0xb7/0x180 mm/memory.c:4368
 truncate_pagecache mm/truncate.c:793 [inline]
 truncate_setsize+0xbd/0xf0 mm/truncate.c:819
 jfs_setattr+0x4f0/0x760 fs/jfs/file.c:122
 notify_change+0xc18/0xf60 fs/attr.c:556
 do_truncate+0x1c2/0x250 fs/open.c:68
 vfs_truncate+0x4b7/0x540 fs/open.c:118
 do_sys_truncate+0xf3/0x1c0 fs/open.c:142
 __do_sys_truncate fs/open.c:154 [inline]
 __se_sys_truncate fs/open.c:152 [inline]
 __x64_sys_truncate+0x5b/0x70 fs/open.c:152
 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: 0033:0x7f763760c799
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:00007f763585e028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f7637885fa0 RCX: 00007f763760c799
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000200000000dc0
RBP: 00007f76376a2bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7637886038 R14: 00007f7637885fa0 R15: 00007ffc4247c608
 </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: 69 0c 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:ffffc90005abf1a0 EFLAGS: 00010002
RAX: 00000001116bae68 RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: 0000000000000002 RSI: 00000000ffff0a00 RDI: 000000088b5d7340
RBP: ffffffff8d6bafdb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000007 R12: 000000088b5d7340
R13: 0000000000000000 R14: ffffc90005abf3b3 R15: 0000000000000010
FS:  00007f763585e6c0(0000) GS:ffff888126442000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb06d6bc000 CR3: 000000008ffea000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	69 0c f7 eb b3 41 c1 	imul   $0xc141b3eb,(%rdi,%rsi,8),%ecx
   7:	fd                   	std
   8:	10 4c 89 6c          	adc    %cl,0x6c(%rcx,%rcx,4)
   c:	24 10                	and    $0x10,%al
   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