Oops: general protection fault, probably for non-canonical address 0xdffffc000000003c: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000001e0-0x00000000000001e7]
CPU: 1 UID: 0 PID: 6135 Comm: syz.0.16 Not tainted 6.14.0-syzkaller-10514-g7f2ff7b62617 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:kasan_byte_accessible+0x12/0x20 mm/kasan/generic.c:199
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 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 9b af e4 fe 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900033ff9f8 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 00000000000001e0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c2eb79b RDI: 000000000000003c
RBP: ffffffff9366b020 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004fbc3c1 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8c2eb79b R15: 00000000000001e0
FS:  00007effe95e16c0(0000) GS:ffff8881250b5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effe89a5fac CR3: 000000007dbb2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __kasan_check_byte+0x14/0x40 mm/kasan/common.c:556
 kasan_check_byte include/linux/kasan.h:399 [inline]
 lock_acquire+0x89/0x2f0 kernel/locking/lockdep.c:5840
 down_read_killable+0xcb/0xcb0 kernel/locking/rwsem.c:1547
 mmap_read_lock_killable include/linux/mmap_lock.h:199 [inline]
 do_pagemap_scan fs/proc/task_mmu.c:2766 [inline]
 do_pagemap_cmd+0x849/0x1250 fs/proc/task_mmu.c:2819
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf3/0x160 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effe878d169
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:00007effe95e1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007effe89a5fa0 RCX: 00007effe878d169
RDX: 0000400000000100 RSI: 00000000c0606610 RDI: 0000000000000004
RBP: 00007effe880e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007effe89a5fa0 R15: 00007ffdb81342f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x20 mm/kasan/generic.c:199
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 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 9b af e4 fe 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900033ff9f8 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: 00000000000001e0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c2eb79b RDI: 000000000000003c
RBP: ffffffff9366b020 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004fbc3c1 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8c2eb79b R15: 00000000000001e0
FS:  00007effe95e16c0(0000) GS:ffff888124fb5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000000680 CR3: 000000007dbb2000 CR4: 0000000000350ef0
----------------
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:	66 0f 1f 00          	nopw   (%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 9b af e4 fe       	jmp    0xfee4afd3
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop