linux-kernel - [syzbot] net-next test error: WARNING in __napi

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Message-ID: <0000000000000eaff805da869d5b@google.com>
Date:   Fri, 18 Mar 2022 16:36:19 -0700
From:   syzbot <syzbot+fb57d2a7c4678481a495@...kaller.appspotmail.com>
To:     Jason@...c4.com, davem@...emloft.net, kuba@...nel.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        pabeni@...hat.com, syzkaller-bugs@...glegroups.com,
        wireguard@...ts.zx2c4.com
Subject: [syzbot] net-next test error: WARNING in __napi_schedule

Hello,

syzbot found the following issue on:

HEAD commit:    e89600ebeeb1 af_vsock: SOCK_SEQPACKET broken buffer test
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=134d43d5700000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ef691629edb94d6a
dashboard link: https://syzkaller.appspot.com/bug?extid=fb57d2a7c4678481a495
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fb57d2a7c4678481a495@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 1133 at net/core/dev.c:4268 ____napi_schedule net/core/dev.c:4268 [inline]
WARNING: CPU: 0 PID: 1133 at net/core/dev.c:4268 __napi_schedule+0xe2/0x440 net/core/dev.c:5878
Modules linked in:
CPU: 0 PID: 1133 Comm: kworker/0:3 Not tainted 5.17.0-rc8-syzkaller-02525-ge89600ebeeb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-crypt-wg0 wg_packet_decrypt_worker
RIP: 0010:____napi_schedule net/core/dev.c:4268 [inline]
RIP: 0010:__napi_schedule+0xe2/0x440 net/core/dev.c:5878
Code: 74 4a e8 31 16 47 fa 31 ff 65 44 8b 25 47 c5 d0 78 41 81 e4 00 ff 0f 00 44 89 e6 e8 98 19 47 fa 45 85 e4 75 07 e8 0e 16 47 fa <0f> 0b e8 07 16 47 fa 65 44 8b 25 5f cf d0 78 31 ff 44 89 e6 e8 75
RSP: 0018:ffffc900057d7c88 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffff88801e680748 RCX: 0000000000000000
RDX: ffff88801ccb0000 RSI: ffffffff8731aa92 RDI: 0000000000000003
RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8731aa88 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880b9c00000 R14: 000000000003adc0 R15: ffff88801e118ec0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdaa5c65300 CR3: 0000000070af4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 napi_schedule include/linux/netdevice.h:465 [inline]
 wg_queue_enqueue_per_peer_rx drivers/net/wireguard/queueing.h:204 [inline]
 wg_packet_decrypt_worker+0x408/0x5d0 drivers/net/wireguard/receive.c:510
 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
 worker_thread+0x657/0x1110 kernel/workqueue.c:2454
 kthread+0x2e9/0x3a0 kernel/kthread.c:377
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>


---
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