list_del corruption. prev->next should be ffff88801ce08008, but was ffff88800000404e ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:51! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a lib/list_debug.c:51 Code: e8 0d a6 f2 ff 0f 0b 48 89 f1 48 c7 c7 a0 ed c2 89 4c 89 e6 e8 f9 a5 f2 ff 0f 0b 48 89 ee 48 c7 c7 40 ef c2 89 e8 e8 a5 f2 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 80 ee c2 89 e8 d4 a5 f2 ff 0f 0b RSP: 0018:ffffc90000d27af0 EFLAGS: 00010082 RAX: 0000000000000054 RBX: 0000000000000200 RCX: 0000000000000000 RDX: ffff8880123f0000 RSI: ffffffff815cebe5 RDI: fffff520001a4f50 RBP: ffff88801ce08008 R08: 0000000000000054 R09: 0000000000000000 R10: ffffffff815c8a2e R11: 0000000000000000 R12: ffff88801ce08008 R13: ffff88800000404e R14: ffff88801ce08024 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d53cde6ac8 CR3: 000000001a4a7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:132 [inline] list_del_init include/linux/list.h:204 [inline] napi_complete_done+0x644/0x880 net/core/dev.c:6551 virtqueue_napi_complete drivers/net/virtio_net.c:337 [inline] virtnet_poll+0xbeb/0x1180 drivers/net/virtio_net.c:1525 __napi_poll+0xaf/0x440 net/core/dev.c:6966 napi_poll net/core/dev.c:7033 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7120 __do_softirq+0x29b/0x9fe kernel/softirq.c:559 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x2d/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165 kthread+0x3b1/0x4a0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Modules linked in: ---[ end trace 8785a49e6d9dca5d ]--- RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a lib/list_debug.c:51 Code: e8 0d a6 f2 ff 0f 0b 48 89 f1 48 c7 c7 a0 ed c2 89 4c 89 e6 e8 f9 a5 f2 ff 0f 0b 48 89 ee 48 c7 c7 40 ef c2 89 e8 e8 a5 f2 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 80 ee c2 89 e8 d4 a5 f2 ff 0f 0b RSP: 0018:ffffc90000d27af0 EFLAGS: 00010082 RAX: 0000000000000054 RBX: 0000000000000200 RCX: 0000000000000000 RDX: ffff8880123f0000 RSI: ffffffff815cebe5 RDI: fffff520001a4f50 RBP: ffff88801ce08008 R08: 0000000000000054 R09: 0000000000000000 R10: ffffffff815c8a2e R11: 0000000000000000 R12: ffff88801ce08008 R13: ffff88800000404e R14: ffff88801ce08024 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055d53cde6ac8 CR3: 000000001a4a7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400