linux-kernel - Re: [PATCH 07/17] signal: Always set JOBCTL_WILL

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Date: Sun, 30 Jun 2024 22:00:53 +0800
From: kernel test robot <oliver.sang@...el.com>
To: "Eric W. Biederman" <ebiederm@...ssion.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
	<linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>, "Oleg
 Nesterov" <oleg@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>,
	"Tejun Heo" <tj@...nel.org>, <oliver.sang@...el.com>
Subject: Re: [PATCH 07/17] signal: Always set JOBCTL_WILL_EXIT for exiting
 tasks



Hello,

kernel test robot noticed "xfstests.generic.215.fail" on:

commit: e792ce7bb93e8fb2fd5e75c4832569dc07e984e0 ("[PATCH 07/17] signal: Always set JOBCTL_WILL_EXIT for exiting tasks")
url: https://github.com/intel-lab-lkp/linux/commits/Eric-W-Biederman/signal-Make-SIGKILL-during-coredumps-an-explicit-special-case/20240619-121513
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git c793a62823d1ce8f70d9cfc7803e3ea436277cda
patch link: https://lore.kernel.org/all/87h6dph8wh.fsf_-_@email.froward.int.ebiederm.org/
patch subject: [PATCH 07/17] signal: Always set JOBCTL_WILL_EXIT for exiting tasks

in testcase: xfstests
version: xfstests-x86_64-e46fa3a7-1_20240615
with following parameters:

	disk: 4HDD
	fs: ext4
	fs2: smbv2
	test: generic-215



compiler: gcc-13
test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


we are not sure why this change could cause random issues, but even we run the
test up to 50 times, it show the issue in a persistent rate, while keeping clean
on parent.

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/disk/fs/fs2/test:
  lkp-skl-d05/xfstests/debian-12-x86_64-20240206.cgz/x86_64-rhel-8.3-func/gcc-13/4HDD/ext4/smbv2/generic-215

commit:
  294049cc0831b2c0 ("signal: Add JOBCTL_WILL_EXIT to mark exiting tasks")
  e792ce7bb93e8fb2 ("signal: Always set JOBCTL_WILL_EXIT for exiting tasks")
.

294049cc0831b2c0 e792ce7bb93e8fb2fd5e75c4832
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :50          34%          17:50    xfstests.generic.215.fail



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202406302114.a2e4cc62-oliver.sang@intel.com

2024-06-26 04:14:52 mount /dev/sda1 /fs/sda1
2024-06-26 04:14:52 mkdir -p /smbv2//cifs/sda1
2024-06-26 04:14:52 export FSTYP=cifs
2024-06-26 04:14:52 export TEST_DEV=//localhost/fs/sda1
2024-06-26 04:14:52 export TEST_DIR=/smbv2//cifs/sda1
2024-06-26 04:14:52 export CIFS_MOUNT_OPTIONS=-ousername=root,password=pass,noperm,vers=2.0,mfsymlinks,actimeo=0
2024-06-26 04:14:52 echo generic/215
2024-06-26 04:14:52 ./check -E tests/cifs/exclude.incompatible-smb2.txt -E tests/cifs/exclude.very-slow.txt generic/215
FSTYP         -- cifs
PLATFORM      -- Linux/x86_64 lkp-skl-d05 6.10.0-rc1-00016-ge792ce7bb93e #1 SMP PREEMPT_DYNAMIC Wed Jun 26 01:38:56 CST 2024

generic/215       - output mismatch (see /lkp/benchmarks/xfstests/results//generic/215.out.bad)
    --- tests/generic/215.out	2024-06-15 03:50:45.000000000 +0000
    +++ /lkp/benchmarks/xfstests/results//generic/215.out.bad	2024-06-26 04:15:50.109565759 +0000
    @@ -5,4 +5,6 @@
     4096+0 records out
     
     writing via mmap
    +FAIL: mtime not update after mapped write
    +FAIL: ctime not update after mapped write
     *** done
    ...
    (Run 'diff -u /lkp/benchmarks/xfstests/tests/generic/215.out /lkp/benchmarks/xfstests/results//generic/215.out.bad'  to see the entire diff)
Ran: generic/215
Failures: generic/215
Failed 1 of 1 tests



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


View attachment "job-script" of type "text/plain" (5655 bytes)

View attachment "reproduce" of type "text/plain" (439 bytes)

View attachment "xfstests" of type "text/plain" (1311 bytes)

View attachment "job.yaml" of type "text/plain" (4750 bytes)

View attachment "config-6.10.0-rc1-00016-ge792ce7bb93e" of type "text/plain" (197212 bytes)

View attachment "repro-script" of type "text/plain" (1429 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (26128 bytes)