list_del corruption. prev->next should be ffffe8ffffc3ead8, but was 0000000000000000
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:51!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 27082 Comm: syz-executor.0 Not tainted 5.12.0-rc4-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 80 b8 f2 ff 0f 0b 48 89 f1 48 c7 c7 00 1c c2 89 4c 89 e6 e8 6c b8 f2 ff 0f 0b 48 89 ee 48 c7 c7 a0 1d c2 89 e8 5b b8 f2 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 1c c2 89 e8 47 b8 f2 ff 0f 0b
RSP: 0018:ffffc9000181fbd8 EFLAGS: 00010286
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815c4d15 RDI: fffff52000303f6d
RBP: ffffe8ffffc3ead8 R08: 0000000000000054 R09: 0000000000000000
R10: ffffffff815bdaae R11: 0000000000000000 R12: ffffe8ffffd3eaef
R13: ffff88805d1a6050 R14: ffffe8ffffc3e978 R15: dffffc0000000000
FS:  00007fd09971f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002767808 CR3: 0000000071076000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 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:6885
 __netif_napi_del+0x3c/0x50 net/core/dev.c:6881
 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:1412
 netdev_run_todo+0x8c3/0xdd0 net/core/dev.c:10493
 dev_ioctl+0x27f/0xb70 net/core/dev_ioctl.c:531
 sock_ioctl+0x50d/0x6a0 net/socket.c:1104
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd09971f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459
RDX: 0000000020000000 RSI: 00000000000089f2 RDI: 0000000000000006
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffc1f0f374f R14: 00007fd09971f300 R15: 0000000000022000
Modules linked in:
---[ end trace f5ca0a945476b968 ]---
RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a lib/list_debug.c:51
Code: e8 80 b8 f2 ff 0f 0b 48 89 f1 48 c7 c7 00 1c c2 89 4c 89 e6 e8 6c b8 f2 ff 0f 0b 48 89 ee 48 c7 c7 a0 1d c2 89 e8 5b b8 f2 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 e0 1c c2 89 e8 47 b8 f2 ff 0f 0b
RSP: 0018:ffffc9000181fbd8 EFLAGS: 00010286
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815c4d15 RDI: fffff52000303f6d
RBP: ffffe8ffffc3ead8 R08: 0000000000000054 R09: 0000000000000000
R10: ffffffff815bdaae R11: 0000000000000000 R12: ffffe8ffffd3eaef
R13: ffff88805d1a6050 R14: ffffe8ffffc3e978 R15: dffffc0000000000
FS:  00007fd09971f700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000056c000 CR3: 0000000071076000 CR4: 00000000001506e0
DR0: 0000000020000240 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600