loop6: detected capacity change from 0 to 32768
Oops: general protection fault, probably for non-canonical address 0xdffffc00e0000159: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000700000ac8-0x0000000700000acf]
CPU: 1 UID: 0 PID: 7428 Comm: syz.6.42 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 81 b3 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc900042e7290 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8ad5120e RCX: 0000000080000003
RDX: 0000000000000000 RSI: ffffffff8ad5120e RDI: 00000000e0000159
RBP: ffffffff819c38cd R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004d9851f R12: 0000000000000000
R13: 0000000700000ac8 R14: 0000000700000ac8 R15: 0000000000000001
FS:  00007fcb4c57e6c0(0000) GS:ffff888126def000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34c1dff8 CR3: 00000000368bc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __kasan_check_byte+0x12/0x40 mm/kasan/common.c:573
 kasan_check_byte include/linux/kasan.h:402 [inline]
 lock_acquire+0x84/0x340 kernel/locking/lockdep.c:5842
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 task_blocks_on_rt_mutex kernel/locking/rtmutex.c:1265 [inline]
 __rt_mutex_slowlock kernel/locking/rtmutex.c:1719 [inline]
 __rt_mutex_slowlock_locked+0x121d/0x25e0 kernel/locking/rtmutex.c:1760
 rt_mutex_slowlock+0xb5/0x160 kernel/locking/rtmutex.c:1800
 __rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
 rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244
 i_mmap_lock_write include/linux/fs.h:512 [inline]
 vma_link_file mm/vma.c:1771 [inline]
 __mmap_new_vma mm/vma.c:2507 [inline]
 __mmap_region mm/vma.c:2708 [inline]
 mmap_region+0x1830/0x1d00 mm/vma.c:2786
 do_mmap+0xc23/0x10c0 mm/mmap.c:558
 vm_mmap_pgoff+0x2a9/0x4d0 mm/util.c:581
 ksys_mmap_pgoff+0x4e9/0x720 mm/mmap.c:604
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb4e31f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcb4c57e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fcb4e575fa0 RCX: 00007fcb4e31f749
RDX: 0000000000000002 RSI: 0000000000003000 RDI: 0000200000001000
RBP: 00007fcb4e3a3f91 R08: 0000000000000004 R09: 0000000000000000
R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcb4e576038 R14: 00007fcb4e575fa0 R15: 00007fff848533d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:210
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 81 b3 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc900042e7290 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8ad5120e RCX: 0000000080000003
RDX: 0000000000000000 RSI: ffffffff8ad5120e RDI: 00000000e0000159
RBP: ffffffff819c38cd R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004d9851f R12: 0000000000000000
R13: 0000000700000ac8 R14: 0000000700000ac8 R15: 0000000000000001
FS:  00007fcb4c57e6c0(0000) GS:ffff888126def000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b34c1dff8 CR3: 00000000368bc000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
   7:	00
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  1c:	48 c1 ef 03          	shr    $0x3,%rdi
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	0f b6 04 07          	movzbl (%rdi,%rax,1),%eax <-- trapping instruction
  2e:	3c 08                	cmp    $0x8,%al
  30:	0f 92 c0             	setb   %al
  33:	e9 d0 81 b3 08       	jmp    0x8b38208
  38:	cc                   	int3
  39:	66                   	data16
  3a:	66                   	data16
  3b:	66                   	data16
  3c:	66                   	data16
  3d:	66                   	data16
  3e:	66                   	data16
  3f:	2e                   	cs