slab kmalloc-8k start ffff888041d40000 pointer offset 80 size 8192
list_del corruption. prev->next should be ffffc900034b76a0, but was ffff888041d40050. (prev=ffff888041d40050)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:64!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 27742 Comm: syz.1.5706 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 7b d1 53 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 6c c9 76 fd 49 8b 17 48 c7 c7 40 d0 27 8c 48 89 de 4c 89 f9 e8 77 8d 6e fc 90 <0f> 0b 4c 89 f7 e8 4c d1 53 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 3d
RSP: 0000:ffffc900034b7570 EFLAGS: 00010046
RAX: 000000000000006d RBX: ffffc900034b76a0 RCX: 9adb7d88c5b73b00
RDX: ffffc9000ef79000 RSI: 0000000000004fc7 RDI: 0000000000004fc8
RBP: ffffc900034b7750 R08: ffff8880b86247d3 R09: 1ffff110170c48fa
R10: dffffc0000000000 R11: ffffed10170c48fb R12: 1ffff110083a800a
R13: dffffc0000000000 R14: ffff888041d40050 R15: ffff888041d40050
FS:  0000000000000000(0000) GS:ffff88812545a000(0063) knlGS:00000000f546db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f701fc10 CR3: 00000000453d8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:132 [inline]
 __list_del_entry include/linux/list.h:223 [inline]
 list_del include/linux/list.h:237 [inline]
 __mutex_remove_waiter kernel/locking/mutex.c:221 [inline]
 __mutex_lock_common kernel/locking/mutex.c:742 [inline]
 __mutex_lock+0xbb1/0x1300 kernel/locking/mutex.c:776
 az6007_i2c_xfer+0x84/0xb90 drivers/media/usb/dvb-usb-v2/az6007.c:755
 __i2c_transfer+0x79a/0x2020 drivers/i2c/i2c-core-base.c:-1
 i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:470 [inline]
 __i2c_smbus_xfer+0xfca/0x1f70 drivers/i2c/i2c-core-smbus.c:608
 i2c_smbus_xfer+0x1f4/0x310 drivers/i2c/i2c-core-smbus.c:546
 i2cdev_ioctl_smbus+0x1e7/0x730 drivers/i2c/i2c-dev.c:356
 compat_i2cdev_ioctl+0x29d/0x5c0 drivers/i2c/i2c-dev.c:584
 __do_compat_sys_ioctl fs/ioctl.c:695 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:638 [inline]
 __ia32_compat_sys_ioctl+0x5ea/0x950 fs/ioctl.c:638
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x20d/0x640 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf707ef6c
Code: 90 85 d2 74 0a 89 ce 81 e6 ff 0f 00 00 89 32 85 c0 74 05 c1 e9 0c 89 08 31 c0 5e 5d c3 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 58 b8
RSP: 002b:00000000f546d50c EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000720
RDX: 0000000080000140 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0x15a/0x190 lib/list_debug.c:62
Code: e8 7b d1 53 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 6c c9 76 fd 49 8b 17 48 c7 c7 40 d0 27 8c 48 89 de 4c 89 f9 e8 77 8d 6e fc 90 <0f> 0b 4c 89 f7 e8 4c d1 53 fd 43 80 3c 2c 00 74 08 4c 89 ff e8 3d
RSP: 0000:ffffc900034b7570 EFLAGS: 00010046
RAX: 000000000000006d RBX: ffffc900034b76a0 RCX: 9adb7d88c5b73b00
RDX: ffffc9000ef79000 RSI: 0000000000004fc7 RDI: 0000000000004fc8
RBP: ffffc900034b7750 R08: ffff8880b86247d3 R09: 1ffff110170c48fa
R10: dffffc0000000000 R11: ffffed10170c48fb R12: 1ffff110083a800a
R13: dffffc0000000000 R14: ffff888041d40050 R15: ffff888041d40050
FS:  0000000000000000(0000) GS:ffff88812545a000(0063) knlGS:00000000f546db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f701fc10 CR3: 00000000453d8000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	85 d2                	test   %edx,%edx
   3:	74 0a                	je     0xf
   5:	89 ce                	mov    %ecx,%esi
   7:	81 e6 ff 0f 00 00    	and    $0xfff,%esi
   d:	89 32                	mov    %esi,(%rdx)
   f:	85 c0                	test   %eax,%eax
  11:	74 05                	je     0x18
  13:	c1 e9 0c             	shr    $0xc,%ecx
  16:	89 08                	mov    %ecx,(%rax)
  18:	31 c0                	xor    %eax,%eax
  1a:	5e                   	pop    %rsi
  1b:	5d                   	pop    %rbp
  1c:	c3                   	ret
  1d:	90                   	nop
  1e:	0f 1f 00             	nopl   (%rax)
  21:	51                   	push   %rcx
  22:	52                   	push   %rdx
  23:	55                   	push   %rbp
  24:	89 e5                	mov    %esp,%ebp
  26:	0f 34                	sysenter
  28:	cd 80                	int    $0x80
* 2a:	5d                   	pop    %rbp <-- trapping instruction
  2b:	5a                   	pop    %rdx
  2c:	59                   	pop    %rcx
  2d:	c3                   	ret
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	58                   	pop    %rax
  3f:	b8                   	.byte 0xb8