list_del corruption, ffff88802616f680->next is NULL ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:52! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 7094 Comm: GC for TOMOYO Not tainted 6.13.0-rc3-syzkaller-00193-ge9b8ffafd20a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid_or_report+0xea/0x1c0 lib/list_debug.c:52 Code: 0f 85 ae 00 00 00 48 8b 42 08 48 39 c6 75 5f b8 01 00 00 00 48 83 c4 18 c3 cc cc cc cc 48 c7 c7 a0 71 b1 8b e8 b7 11 db fc 90 <0f> 0b 48 c7 c7 00 72 b1 8b e8 a8 11 db fc 90 0f 0b 48 c7 c7 60 72 RSP: 0018:ffffc90018ef7e00 EFLAGS: 00010282 RAX: 0000000000000033 RBX: ffff88802616f680 RCX: ffffffff8178e1e9 RDX: 0000000000000000 RSI: ffffffff81798976 RDI: 0000000000000005 RBP: ffff88802616f680 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff88802616f690 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000201e2030 CR3: 000000002fd3a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] tomoyo_try_to_gc+0x21/0xcd0 security/tomoyo/gc.c:395 tomoyo_collect_entry security/tomoyo/gc.c:599 [inline] tomoyo_gc_thread security/tomoyo/gc.c:619 [inline] tomoyo_gc_thread+0xd3b/0x1390 security/tomoyo/gc.c:612 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0xea/0x1c0 lib/list_debug.c:52 Code: 0f 85 ae 00 00 00 48 8b 42 08 48 39 c6 75 5f b8 01 00 00 00 48 83 c4 18 c3 cc cc cc cc 48 c7 c7 a0 71 b1 8b e8 b7 11 db fc 90 <0f> 0b 48 c7 c7 00 72 b1 8b e8 a8 11 db fc 90 0f 0b 48 c7 c7 60 72 RSP: 0018:ffffc90018ef7e00 EFLAGS: 00010282 RAX: 0000000000000033 RBX: ffff88802616f680 RCX: ffffffff8178e1e9 RDX: 0000000000000000 RSI: ffffffff81798976 RDI: 0000000000000005 RBP: ffff88802616f680 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: ffff88802616f690 R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002034f030 CR3: 0000000032ac6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400