ubi0: attaching mtd0
ubi0: scanning is finished
------------[ cut here ]------------
notifier callback ubi_wl_reboot_notifier already registered
WARNING: CPU: 2 PID: 12611 at kernel/notifier.c:23 notifier_chain_register kernel/notifier.c:23 [inline]
WARNING: CPU: 2 PID: 12611 at kernel/notifier.c:23 notifier_chain_register+0x157/0x420 kernel/notifier.c:17
Modules linked in:
CPU: 2 UID: 0 PID: 12611 Comm: syz.3.1668 Not tainted 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:notifier_chain_register kernel/notifier.c:23 [inline]
RIP: 0010:notifier_chain_register+0x157/0x420 kernel/notifier.c:17
Code: 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 c2 02 00 00 49 8b 75 00 48 c7 c7 20 10 4c 8b e8 0a 7a f4 ff 90 <0f> 0b 90 90 bb ef ff ff ff e8 7b b6 33 00 89 d8 48 83 c4 18 5b 5d
RSP: 0018:ffffc900061afa28 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8880671d98c8 RCX: ffffc9000cdf1000
RDX: 0000000000080000 RSI: ffffffff815a1796 RDI: 0000000000000001
RBP: 000000007fffffff R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000002 R12: 0000000000000001
R13: ffff8880671d98c8 R14: ffffffff8f613c68 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88802b600000(0063) knlGS:00000000f5130b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002f91effc CR3: 0000000071a6a000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __blocking_notifier_chain_register kernel/notifier.c:264 [inline]
 blocking_notifier_chain_register+0x76/0xd0 kernel/notifier.c:282
 ubi_wl_init+0x1018/0x17b0 drivers/mtd/ubi/wl.c:1960
 ubi_attach+0x1cdd/0x4dc0 drivers/mtd/ubi/attach.c:1605
 ubi_attach_mtd_dev+0x158f/0x3590 drivers/mtd/ubi/build.c:1004
 ctrl_cdev_ioctl+0x339/0x3d0 drivers/mtd/ubi/cdev.c:1043
 compat_ptr_ioctl+0x6b/0xa0 fs/ioctl.c:943
 __do_compat_sys_ioctl+0x1cb/0x2c0 fs/ioctl.c:1004
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf713e579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f513055c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000040186f40
RDX: 0000000020000502 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi