netdev - Fw: [Bug 215888] New: raw socket test with stress-ng trigger soft lockup

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Date:   Tue, 26 Apr 2022 07:54:48 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     netdev@...r.kernel.org
Subject: Fw: [Bug 215888] New: raw socket test with stress-ng trigger soft
 lockup



Begin forwarded message:

Date: Tue, 26 Apr 2022 09:31:50 +0000
From: bugzilla-daemon@...nel.org
To: stephen@...workplumber.org
Subject: [Bug 215888] New: raw socket test with stress-ng trigger soft lockup


https://bugzilla.kernel.org/show_bug.cgi?id=215888

            Bug ID: 215888
           Summary: raw socket test with stress-ng trigger soft lockup
           Product: Networking
           Version: 2.5
    Kernel Version: 5.17
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: IPV4
          Assignee: stephen@...workplumber.org
          Reporter: colin.king@...onical.com
        Regression: No

Running stress-ng [1] with the following raw socket stressor triggers a
softlockup on a SMP NUMA x86-64 system:

sudo stress-ng --rawsock 20 -t 60

kernel:watchdog: BUG: soft lockup - CPU#4 stuck for 22s! [stress-ng:49781]

Tested this on 5.17. User has also reported this against the stress-ng project:

https://github.com/ColinIanKing/stress-ng/issues/187

[1] Stress-ng:
https://github.com/ColinIanKing/stress-ng
git clone https://github.com/ColinIanKing/stress-ng
cd stress-ng
make
sudo ./stress-ng --rawsock 0 -t 60

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