list_del corruption. prev->next should be ffff888061f7b000, but was ffff888061ba6000. (prev=ffffffff8e5b0b20) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:59! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 10237 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-13164-g78b421b6a7c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:__list_del_entry_valid+0x11f/0x1b0 lib/list_debug.c:59 Code: 16 a7 8a e8 a3 ed 50 fd 0f 0b 48 89 ca 48 c7 c7 00 17 a7 8a e8 92 ed 50 fd 0f 0b 4c 89 c2 48 c7 c7 60 17 a7 8a e8 81 ed 50 fd <0f> 0b 48 89 d1 48 c7 c7 e0 17 a7 8a 4c 89 c2 e8 6d ed 50 fd 0f 0b RSP: 0018:ffffc9001603fd58 EFLAGS: 00010282 RAX: 000000000000006d RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8168cf9c RDI: 0000000000000005 RBP: ffff888061f7b000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff888061f7b008 R13: ffff888061f7e098 R14: ffff888058397000 R15: ffff888061f7e5f0 FS: 000055555736a400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faed6700718 CR3: 0000000023e19000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:134 [inline] list_del include/linux/list.h:148 [inline] local_release net/nfc/llcp_core.c:172 [inline] kref_put include/linux/kref.h:65 [inline] nfc_llcp_local_put net/nfc/llcp_core.c:182 [inline] nfc_llcp_local_put net/nfc/llcp_core.c:177 [inline] nfc_llcp_unregister_device+0xb8/0x260 net/nfc/llcp_core.c:1620 nfc_unregister_device+0x196/0x330 net/nfc/core.c:1179 virtual_ncidev_close+0x52/0xb0 drivers/nfc/virtual_ncidev.c:163 __fput+0x27c/0xa90 fs/file_table.c:321 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f526a23e01b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007f526a4cfb80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f526a23e01b RDX: 0000000000000000 RSI: 0000001b2d02357c RDI: 0000000000000004 RBP: 00007f526a3ad980 R08: 0000000000000000 R09: 00000000aaee8e03 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000173bd3 R13: 00007f526a4cfc80 R14: 00007f526a3ac050 R15: 0000000000000032 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid+0x11f/0x1b0 lib/list_debug.c:59 Code: 16 a7 8a e8 a3 ed 50 fd 0f 0b 48 89 ca 48 c7 c7 00 17 a7 8a e8 92 ed 50 fd 0f 0b 4c 89 c2 48 c7 c7 60 17 a7 8a e8 81 ed 50 fd <0f> 0b 48 89 d1 48 c7 c7 e0 17 a7 8a 4c 89 c2 e8 6d ed 50 fd 0f 0b RSP: 0018:ffffc9001603fd58 EFLAGS: 00010282 RAX: 000000000000006d RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8168cf9c RDI: 0000000000000005 RBP: ffff888061f7b000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff888061f7b008 R13: ffff888061f7e098 R14: ffff888058397000 R15: ffff888061f7e5f0 FS: 000055555736a400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9730dad988 CR3: 0000000023e19000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400