FYI, we noticed the following commit (built with gcc-7):
commit: 6f4f7839e92414a9ab56afbe3023c32abe4cbe59 ("auth_gss: fix deadlock that blocks
rpcsec_gss_exit_net when use-gss-proxy==1")
grep: /cephfs/kbuild/commit-list/aaron/aaron:batch_size-phas1_1:
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url:
http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 2G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------+------------+------------+
| | 9cf7a1b68c | 6f4f7839e9 |
+-------------------------------------------------+------------+------------+
| boot_successes | 8 | 2 |
| boot_failures | 0 | 4 |
| WARNING:at_fs/proc/generic.c:#remove_proc_entry | 0 | 4 |
| EIP:remove_proc_entry | 0 | 4 |
+-------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp(a)intel.com>
[ 101.145547] WARNING: CPU: 1 PID: 7 at fs/proc/generic.c:683
remove_proc_entry+0xd7/0xeb
[ 101.146501] CPU: 1 PID: 7 Comm: kworker/u4:0 Tainted: G T
5.1.0-rc3-00031-g6f4f783 #32
[ 101.147428] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1
04/01/2014
[ 101.148272] Workqueue: netns cleanup_net
[ 101.148680] EIP: remove_proc_entry+0xd7/0xeb
[ 101.149118] Code: 9e f5 ff ff 85 c0 74 27 89 d8 e8 93 f5 ff ff ff 70 24 ff 73 24 8b 43
1c ff 70 24 68 c0 6b 00 42 68 e4 0f 68 42 e8 0e bb e8 ff <0f> 0b 83 c4 14 89 d8 e8
4d fd ff ff 8d 65 f4 5b 5e 5f 5d c3 66 66
[ 101.150993] EAX: 0000005b EBX: bf699008 ECX: 80000001 EDX: 4105b0f6
[ 101.151628] ESI: 4287cbaa EDI: bf928ee0 EBP: 4033deec ESP: 4033dec4
[ 101.152263] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00010202
[ 101.152988] CR0: 80050033 CR2: 080f3354 CR3: 7f4fe000 CR4: 00040690
[ 101.153617] DR0: 36cde000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 101.154247] DR6: fffe0ff0 DR7: 00000600
[ 101.154635] Call Trace:
[ 101.154890] ? sunrpc_exit_net+0x5d/0x69
[ 101.155289] ? ops_exit_list+0x2a/0x4c
[ 101.155670] ? cleanup_net+0x165/0x203
[ 101.156052] ? process_one_work+0x209/0x361
[ 101.156481] ? worker_thread+0x16b/0x20c
[ 101.156879] ? kthread+0xdd/0xdf
[ 101.157212] ? process_scheduled_works+0x27/0x27
[ 101.157684] ? queuing_blocked+0x39/0x39
[ 101.158083] ? ret_from_fork+0x19/0x30
[ 101.158470] ---[ end trace a2b4903886cdf4ab ]---
To reproduce:
# build kernel
cd linux
cp config-5.1.0-rc3-00031-g6f4f783 .config
make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 olddefconfig
make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 prepare
make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 modules_prepare
make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 SHELL=/bin/bash
make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 bzImage
git clone
https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
lkp