invalid opcode in rxrpc_destroy_all_locals (2)

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syzbot

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Dec 5, 2020, 2:55:11 PM12/5/20
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Hello,

syzbot found the following issue on:

HEAD commit: c196b3a9 Linux 4.14.210
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17f8c727500000
kernel config: https://syzkaller.appspot.com/x/.config?x=5e5088ac39d46cc4
dashboard link: https://syzkaller.appspot.com/bug?extid=899e4e1bc98afdfd7299
compiler: gcc (GCC) 10.1.0-syz 20200507

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+899e4e...@syzkaller.appspotmail.com

invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 21296 Comm: kworker/u4:8 Not tainted 4.14.210-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
task: ffff88809c9820c0 task.stack: ffff888076300000
RIP: 0010:rxrpc_destroy_all_locals+0xe6/0xf2 net/rxrpc/local_object.c:408
RSP: 0018:ffff888076307c28 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff888072eaafc0 RCX: fffffbfff17d69a8
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000286
RBP: ffff888072eaafe0 R08: ffff88809c9820c0 R09: dffffc0000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888072eaafe0
R13: ffff888072eaaff0 R14: dffffc0000000000 R15: fffffbfff13c2733
FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005651b95a3faf CR3: 000000009af91000 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+0xa5/0x150 net/core/net_namespace.c:142
cleanup_net+0x3b3/0x840 net/core/net_namespace.c:484
process_one_work+0x793/0x14a0 kernel/workqueue.c:2116
worker_thread+0x5cc/0xff0 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 b4 cc bc fa 4c 8d 63 20 4c 39 e5 0f 85 52 00 00 00 e8 a2 cc bc fa 4c 89 ef e8 aa 51 85 00 <0f> 0b 48 89 ef e8 f0 9c e6 fa eb c0 e8 89 cc bc fa 48 c7 c7 e0
RIP: rxrpc_destroy_all_locals+0xe6/0xf2 net/rxrpc/local_object.c:408 RSP: ffff888076307c28
---[ end trace ff3334adc63681a7 ]---


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syzbot

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Apr 4, 2021, 3:55:12 PM4/4/21
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Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
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