device Z3 left promiscuous mode
device Z4 left promiscuous mode
device Z5 left promiscuous mode
device Z6 left promiscuous mode
device Z7 left promiscuous mode
list_del corruption. prev->next should be ffffe8ffffc4f1a0, but was ffffe8ffffc4f280
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:51!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10354 Comm: kworker/u4:8 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a lib/list_debug.c:51
Code: e8 ad b6 f2 ff 0f 0b 48 89 f1 48 c7 c7 c0 30 c2 89 4c 89 e6 e8 99 b6 f2 ff 0f 0b 48 89 ee 48 c7 c7 60 32 c2 89 e8 88 b6 f2 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 31 c2 89 e8 74 b6 f2 ff 0f 0b
RSP: 0018:ffffc90001bff968 EFLAGS: 00010286
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880118c1c40 RSI: ffffffff815c5205 RDI: fffff5200037ff1f
RBP: ffffe8ffffc4f1a0 R08: 0000000000000054 R09: 0000000000000000
R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffffe8ffffd4f1a0
R13: ffff88804b1680aa R14: ffffe8ffffc4f040 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005619041f1160 CR3: 0000000018d50000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 list_del_rcu include/linux/rculist.h:166 [inline]
 __netif_napi_del.part.0+0x118/0x520 net/core/dev.c:6939
 __netif_napi_del+0x3c/0x50 net/core/dev.c:6935
 gro_cells_destroy net/core/gro_cells.c:102 [inline]
 gro_cells_destroy+0x115/0x360 net/core/gro_cells.c:92
 ip6gre_dev_free+0x15/0x60 net/ipv6/ip6_gre.c:1411
 netdev_run_todo+0x6b4/0xa80 net/core/dev.c:10556
 ip6gre_exit_batch_net+0x516/0x750 net/ipv6/ip6_gre.c:1629
 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:178
 cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:595
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace 7ee437844eff82d9 ]---
RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a lib/list_debug.c:51
Code: e8 ad b6 f2 ff 0f 0b 48 89 f1 48 c7 c7 c0 30 c2 89 4c 89 e6 e8 99 b6 f2 ff 0f 0b 48 89 ee 48 c7 c7 60 32 c2 89 e8 88 b6 f2 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 31 c2 89 e8 74 b6 f2 ff 0f 0b
RSP: 0018:ffffc90001bff968 EFLAGS: 00010286
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880118c1c40 RSI: ffffffff815c5205 RDI: fffff5200037ff1f
RBP: ffffe8ffffc4f1a0 R08: 0000000000000054 R09: 0000000000000000
R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffffe8ffffd4f1a0
R13: ffff88804b1680aa R14: ffffe8ffffc4f040 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efddf46d000 CR3: 0000000011cb1000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400