list_add corruption. prev->next should be next (ffff888017c1d000), but was ffff888146a56000. (prev=ffffffff8e390f00). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:32! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4010 Comm: syz-executor.1 Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:__list_add_valid+0xe2/0xf0 lib/list_debug.c:30 Code: 69 06 0f 0b 48 c7 c7 40 ff 37 8b 4c 89 e6 4c 89 f1 e8 a2 57 69 06 0f 0b 48 c7 c7 c0 ff 37 8b 4c 89 f6 4c 89 e1 e8 8e 57 69 06 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 57 41 56 RSP: 0018:ffffc9000bb8f560 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff888017c1d008 RCX: 14f627d176839400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100505fc00 R08: ffffffff816dfe9c R09: fffff52001771e65 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8e390f00 R13: dffffc0000000000 R14: ffff888017c1d000 R15: ffff8880282fe000 FS: 00007f559bddd700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f671cdad988 CR3: 0000000071545000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:69 [inline] list_add include/linux/list.h:88 [inline] nfc_llcp_register_device+0x6cf/0x800 net/nfc/llcp_core.c:1604 nfc_register_device+0x71/0x320 net/nfc/core.c:1124 nci_register_device+0x7c2/0x900 net/nfc/nci/core.c:1257 virtual_ncidev_open+0x13c/0x1b0 drivers/nfc/virtual_ncidev.c:148 misc_open+0x308/0x380 drivers/char/misc.c:165 chrdev_open+0x54e/0x630 fs/char_dev.c:414 do_dentry_open+0x7f9/0x10f0 fs/open.c:920 do_open fs/namei.c:3560 [inline] path_openat+0x27b3/0x3170 fs/namei.c:3715 do_filp_open+0x234/0x490 fs/namei.c:3742 do_sys_openat2+0x13f/0x500 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __x64_sys_openat+0x247/0x290 fs/open.c:1375 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f559ca8c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f559bddd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f559cbac050 RCX: 00007f559ca8c0f9 RDX: 0000000000000002 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f559cae7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7e5d86ef R14: 00007f559bddd300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid+0xe2/0xf0 lib/list_debug.c:30 Code: 69 06 0f 0b 48 c7 c7 40 ff 37 8b 4c 89 e6 4c 89 f1 e8 a2 57 69 06 0f 0b 48 c7 c7 c0 ff 37 8b 4c 89 f6 4c 89 e1 e8 8e 57 69 06 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 41 57 41 56 RSP: 0018:ffffc9000bb8f560 EFLAGS: 00010246 RAX: 0000000000000075 RBX: ffff888017c1d008 RCX: 14f627d176839400 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: 1ffff1100505fc00 R08: ffffffff816dfe9c R09: fffff52001771e65 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8e390f00 R13: dffffc0000000000 R14: ffff888017c1d000 R15: ffff8880282fe000 FS: 00007f559bddd700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f07e9959718 CR3: 0000000071545000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400