invalid opcode in rxrpc_destroy_all_locals

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 01364dad Linux 4.14.174
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1536ae75e00000
kernel config: https://syzkaller.appspot.com/x/.config?x=664dd71881ab2b2d
dashboard link: https://syzkaller.appspot.com/bug?extid=b32447d91eecbb03dbd6
compiler: gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+b32447...@syzkaller.appspotmail.com

invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 7360 Comm: kworker/u4:5 Not tainted 4.14.174-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
task: ffff8880a16da580 task.stack: ffff888050868000
RIP: 0010:rxrpc_destroy_all_locals+0xe6/0xf2 net/rxrpc/local_object.c:405
RSP: 0000:ffff88805086fbf8 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff8880554d0840 RCX: fffffbfff14b0f60
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000282
RBP: ffff8880554d0860 R08: ffff8880a16da580 R09: dffffc0000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880554d0860
R13: ffff8880554d0870 R14: dffffc0000000000 R15: fffffbfff10fd24f
FS: 0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c4329d3f6c CR3: 0000000096869000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rxrpc_exit_net+0x158/0x260 net/rxrpc/net_ns.c:78
ops_exit_list.isra.0+0x9d/0x140 net/core/net_namespace.c:142
cleanup_net+0x3bb/0x820 net/core/net_namespace.c:484
process_one_work+0x813/0x1540 kernel/workqueue.c:2116
worker_thread+0x5d1/0x1070 kernel/workqueue.c:2250
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 00 00 00 00 00 fc ff df 48 83 eb 20 e8 74 ba 9e fb 4c 8d 63 20 4c 39 e5 0f 85 52 00 00 00 e8 62 ba 9e fb 4c 89 ef e8 8a 10 84 00 <0f> 0b 48 89 ef e8 10 0c c8 fb eb c0 e8 49 ba 9e fb 48 c7 c7 c0
RIP: rxrpc_destroy_all_locals+0xe6/0xf2 net/rxrpc/local_object.c:405 RSP: ffff88805086fbf8
---[ end trace 403cac34f1332506 ]---


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.