list_add corruption. prev->next should be next (ffff88802b71c000), but was ffff88801e6d1000. (prev=ffffffff8ead8ca0). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:32! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13101 Comm: syz-executor189 Not tainted 6.6.0-rc2-syzkaller-00386-g3aba70aed91f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:__list_add_valid_or_report+0xb6/0x100 lib/list_debug.c:32 Code: e8 ef 2c 3f fd 0f 0b 48 89 d9 48 c7 c7 60 11 e9 8a e8 de 2c 3f fd 0f 0b 48 89 f1 48 c7 c7 e0 11 e9 8a 48 89 de e8 ca 2c 3f fd <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 60 12 e9 8a e8 b3 2c 3f RSP: 0018:ffffc9000b977820 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffff88802b71c000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816a8362 RDI: 0000000000000005 RBP: ffff8880270d2000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff8880270d2008 R13: ffff88802b71c000 R14: ffff88807a2d50f0 R15: ffff88807a2d5140 FS: 000055555601d480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0b38351190 CR3: 0000000023eaf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add_valid include/linux/list.h:88 [inline] __list_add include/linux/list.h:150 [inline] list_add include/linux/list.h:169 [inline] nfc_llcp_register_device+0x7a3/0x9d0 net/nfc/llcp_core.c:1639 nfc_register_device+0x6d/0x3c0 net/nfc/core.c:1124 nci_register_device+0x7f4/0xb80 net/nfc/nci/core.c:1257 virtual_ncidev_open+0x147/0x220 drivers/nfc/virtual_ncidev.c:148 misc_open+0x3da/0x4c0 drivers/char/misc.c:165 chrdev_open+0x277/0x700 fs/char_dev.c:414 do_dentry_open+0x88b/0x1730 fs/open.c:929 do_open fs/namei.c:3639 [inline] path_openat+0x19af/0x29c0 fs/namei.c:3796 do_filp_open+0x1de/0x430 fs/namei.c:3823 do_sys_openat2+0x176/0x1e0 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+0x175/0x210 fs/open.c:1448 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0b382d1669 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 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:00007fff0a6ee5d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0b382d1669 RDX: 0000000000000002 RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 00000000000f4240 R08: 0000000000000000 R09: 00007fff0a6ee630 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff0a6ee630 R13: 00000000000e6711 R14: 00007fff0a6ee61c R15: 0000000000000003 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0xb6/0x100 lib/list_debug.c:32 Code: e8 ef 2c 3f fd 0f 0b 48 89 d9 48 c7 c7 60 11 e9 8a e8 de 2c 3f fd 0f 0b 48 89 f1 48 c7 c7 e0 11 e9 8a 48 89 de e8 ca 2c 3f fd <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 60 12 e9 8a e8 b3 2c 3f RSP: 0018:ffffc9000b977820 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffff88802b71c000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816a8362 RDI: 0000000000000005 RBP: ffff8880270d2000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff8880270d2008 R13: ffff88802b71c000 R14: ffff88807a2d50f0 R15: ffff88807a2d5140 FS: 000055555601d480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0b38351190 CR3: 0000000023eaf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400