list_del corruption. prev->next should be ffffc90002fe7b98, but was ffff888029b5c5c8. (prev=ffff888029b5c5c8) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:62! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 6088 Comm: syz-executor554 Not tainted 6.13.0-rc7-syzkaller-00191-gfda5e3f28400 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x1c0 lib/list_debug.c:62 Code: e8 19 db da fc 90 0f 0b 48 89 ca 48 c7 c7 00 a0 b1 8b e8 07 db da fc 90 0f 0b 48 89 c2 48 c7 c7 60 a0 b1 8b e8 f5 da da fc 90 <0f> 0b 48 89 d1 48 c7 c7 e0 a0 b1 8b 48 89 c2 e8 e0 da da fc 90 0f RSP: 0018:ffffc90002fe7880 EFLAGS: 00010086 RAX: 000000000000006d RBX: ffffc90002fe7b80 RCX: ffffffff8178e449 RDX: 0000000000000000 RSI: ffffffff81798bd6 RDI: 0000000000000005 RBP: ffff888029b5c588 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: 0000000000000286 R13: ffffc90002fe7b98 R14: ffffc90002fe7ba0 R15: ffffc90002fe7b70 FS: 000055558db4b480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000035e0e000 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] list_del include/linux/list.h:229 [inline] __remove_wait_queue include/linux/wait.h:207 [inline] remove_wait_queue+0x30/0x180 kernel/sched/wait.c:55 free_poll_entry fs/select.c:132 [inline] poll_freewait+0xd5/0x250 fs/select.c:141 do_sys_poll+0x6f7/0xde0 fs/select.c:1010 __do_sys_poll fs/select.c:1074 [inline] __se_sys_poll fs/select.c:1062 [inline] __x64_sys_poll+0x1a8/0x450 fs/select.c:1062 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f717e077d69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 1f 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:00007ffd0285dcb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f717e077d69 RDX: 0000000000000106 RSI: 0000000000000005 RDI: 0000000020000080 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0285dce8 R13: 00007ffd0285dd00 R14: 00007ffd0285dd40 R15: 0000000000000033 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x1c0 lib/list_debug.c:62 Code: e8 19 db da fc 90 0f 0b 48 89 ca 48 c7 c7 00 a0 b1 8b e8 07 db da fc 90 0f 0b 48 89 c2 48 c7 c7 60 a0 b1 8b e8 f5 da da fc 90 <0f> 0b 48 89 d1 48 c7 c7 e0 a0 b1 8b 48 89 c2 e8 e0 da da fc 90 0f RSP: 0018:ffffc90002fe7880 EFLAGS: 00010086 RAX: 000000000000006d RBX: ffffc90002fe7b80 RCX: ffffffff8178e449 RDX: 0000000000000000 RSI: ffffffff81798bd6 RDI: 0000000000000005 RBP: ffff888029b5c588 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: 0000000000000286 R13: ffffc90002fe7b98 R14: ffffc90002fe7ba0 R15: ffffc90002fe7b70 FS: 000055558db4b480(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000035e0e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400