list_add corruption. prev->next should be next (ffff8881052515e0), but was 0000000000000000. (prev=ffff88810e689048).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:32!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 4441 Comm: syz-executor.5 Not tainted 6.6.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:__list_add_valid_or_report+0x74/0x90 lib/list_debug.c:32
Code: b9 ff 0f 0b 48 89 c1 48 c7 c7 d8 c0 16 82 e8 73 f1 b9 ff 0f 0b 48 89 d1 48 89 c6 4c 89 c2 48 c7 c7 30 c1 16 82 e8 5c f1 b9 ff <0f> 0b 48 89 f2 48 89 c1 48 89 fe 48 c7 c7 88 c1 16 82 e8 45 f1 b9
RSP: 0018:ffffc90001e0bc58 EFLAGS: 00010246
RAX: 0000000000000075 RBX: ffff88810630c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff820df580 RDI: 00000000ffffffff
RBP: ffff88810be75e30 R08: 0000000000000000 R09: ffff888106368a50
R10: 0000000000080000 R11: 0000000000000004 R12: ffff888105251000
R13: ffff88810e689048 R14: ffff88810630d048 R15: ffff8881052515e0
FS:  00007f6085f286c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f60864c6988 CR3: 00000001063de000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add_valid include/linux/list.h:88 [inline]
 __list_add include/linux/list.h:150 [inline]
 list_add_tail include/linux/list.h:183 [inline]
 ptp_open+0x76/0xb0 drivers/ptp/ptp_chardev.c:114
 posix_clock_open+0x63/0xa0 kernel/time/posix-clock.c:134
 chrdev_open+0xc6/0x240 fs/char_dev.c:414
 do_dentry_open+0x200/0x500 fs/open.c:929
 do_open fs/namei.c:3639 [inline]
 path_openat+0x960/0xc30 fs/namei.c:3796
 do_filp_open+0xae/0x150 fs/namei.c:3823
 do_sys_openat2+0xa2/0xd0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x69/0x90 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0x80 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f60863a5ae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6085f280c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f60864c4f80 RCX: 00007f60863a5ae9
RDX: 0000000000000000 RSI: 0000000020000300 RDI: ffffffffffffff9c
RBP: 00007f60863f147a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007f60864c4f80 R15: 00007ffddce878a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid_or_report+0x74/0x90 lib/list_debug.c:32
Code: b9 ff 0f 0b 48 89 c1 48 c7 c7 d8 c0 16 82 e8 73 f1 b9 ff 0f 0b 48 89 d1 48 89 c6 4c 89 c2 48 c7 c7 30 c1 16 82 e8 5c f1 b9 ff <0f> 0b 48 89 f2 48 89 c1 48 89 fe 48 c7 c7 88 c1 16 82 e8 45 f1 b9
RSP: 0018:ffffc90001e0bc58 EFLAGS: 00010246

RAX: 0000000000000075 RBX: ffff88810630c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff820df580 RDI: 00000000ffffffff
RBP: ffff88810be75e30 R08: 0000000000000000 R09: ffff888106368a50
R10: 0000000000080000 R11: 0000000000000004 R12: ffff888105251000
R13: ffff88810e689048 R14: ffff88810630d048 R15: ffff8881052515e0
FS:  00007f6085f286c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f60864c6988 CR3: 00000001063de000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400