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Date: Tue, 5 Apr 2022 16:26:09 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Bui Quang Minh <minhquangbui99@...il.com>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, cgroups@...r.kernel.org,
Bui Quang Minh <minhquangbui99@...il.com>,
Tejun Heo <tj@...nel.org>, Zefan Li <lizefan.x@...edance.com>,
Johannes Weiner <hannes@...xchg.org>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Andrii Nakryiko <andrii@...nel.org>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>, netdev@...r.kernel.org,
bpf@...r.kernel.org
Subject: [cgroup] 2bc22feae8:
WARNING:at_lib/percpu-refcount.c:#percpu_ref_kill_and_confirm
Greeting,
FYI, we noticed the following commit (built with gcc-11):
commit: 2bc22feae8a913c7f371bc79ef9967122d8d326c ("[PATCH] cgroup: Kill the parent controller when its last child is killed")
url: https://github.com/intel-lab-lkp/linux/commits/Bui-Quang-Minh/cgroup-Kill-the-parent-controller-when-its-last-child-is-killed/20220403-215911
base: https://git.kernel.org/cgit/linux/kernel/git/tj/cgroup.git for-next
patch link: https://lore.kernel.org/lkml/20220403135717.8294-1-minhquangbui99@gmail.com
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 6.033070][ T1] WARNING: CPU: 0 PID: 1 at lib/percpu-refcount.c:388 percpu_ref_kill_and_confirm (??:?)
[ 6.040408][ T1] Modules linked in:
[ 6.041099][ T1] CPU: 0 PID: 1 Comm: systemd Not tainted 5.16.0-06542-g2bc22feae8a9 #1
[ 6.042403][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 6.043846][ T1] RIP: 0010:percpu_ref_kill_and_confirm (??:?)
[ 6.044927][ T1] Code: 3d 69 00 70 01 00 75 24 48 8b 45 08 48 c7 c6 a0 c7 09 82 48 c7 c7 26 a5 32 82 c6 05 4e 00 70 01 01 48 8b 50 08 e8 24 18 61 00 <0f> 0b 48 83 4d 00 02 4c 89 ee 48 89 ef e8 f0 fc ff ff 48 89 ef e8
All code
========
0: 3d 69 00 70 01 cmp $0x1700069,%eax
5: 00 75 24 add %dh,0x24(%rbp)
8: 48 8b 45 08 mov 0x8(%rbp),%rax
c: 48 c7 c6 a0 c7 09 82 mov $0xffffffff8209c7a0,%rsi
13: 48 c7 c7 26 a5 32 82 mov $0xffffffff8232a526,%rdi
1a: c6 05 4e 00 70 01 01 movb $0x1,0x170004e(%rip) # 0x170006f
21: 48 8b 50 08 mov 0x8(%rax),%rdx
25: e8 24 18 61 00 callq 0x61184e
2a:* 0f 0b ud2 <-- trapping instruction
2c: 48 83 4d 00 02 orq $0x2,0x0(%rbp)
31: 4c 89 ee mov %r13,%rsi
34: 48 89 ef mov %rbp,%rdi
37: e8 f0 fc ff ff callq 0xfffffffffffffd2c
3c: 48 89 ef mov %rbp,%rdi
3f: e8 .byte 0xe8
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 48 83 4d 00 02 orq $0x2,0x0(%rbp)
7: 4c 89 ee mov %r13,%rsi
a: 48 89 ef mov %rbp,%rdi
d: e8 f0 fc ff ff callq 0xfffffffffffffd02
12: 48 89 ef mov %rbp,%rdi
15: e8 .byte 0xe8
[ 6.051482][ T1] RSP: 0000:ffffc90000013e28 EFLAGS: 00010082
[ 6.052450][ T1] RAX: 0000000000000000 RBX: ffff88812b68b000 RCX: 0000000000000027
[ 6.053757][ T1] RDX: 0000000000000003 RSI: 0000000000000001 RDI: ffff88842fc1b780
[ 6.055070][ T1] RBP: ffff88812b68b010 R08: 0000000000000000 R09: 0000000000000000
[ 6.056322][ T1] R10: 000000000000000b R11: ffffffff82204f78 R12: 0000000000000246
[ 6.058751][ T1] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88812b1097a0
[ 6.063819][ T1] FS: 0000000000000000(0000) GS:ffff88842fc00000(0063) knlGS:00000000f77e31c0
[ 6.065244][ T1] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
[ 6.066251][ T1] CR2: 00000000566f5618 CR3: 000000012b4a4000 CR4: 00000000000406f0
[ 6.067524][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6.068975][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6.073751][ T1] Call Trace:
[ 6.074375][ T1] <TASK>
[ 6.074915][ T1] cgroup_destroy_locked (cgroup.c:?)
[ 6.075771][ T1] cgroup_rmdir (??:?)
[ 6.076502][ T1] kernfs_iop_rmdir (dir.c:?)
[ 6.077415][ T1] vfs_rmdir (??:?)
[ 6.078170][ T1] do_rmdir (??:?)
[ 6.079048][ T1] __do_sys_rmdir (namei.c:?)
[ 6.079829][ T1] do_int80_syscall_32 (??:?)
[ 6.080698][ T1] entry_INT80_compat (??:?)
[ 6.083561][ T1] RIP: 0023:0xf7f4ba02
[ 6.084304][ T1] Code: 95 01 00 05 25 36 02 00 83 ec 14 8d 80 e8 99 ff ff 50 6a 02 e8 1f ff 00 00 c7 04 24 7f 00 00 00 e8 7e 87 01 00 66 90 90 cd 80 <c3> 8d b6 00 00 00 00 8d bc 27 00 00 00 00 8b 1c 24 c3 8d b6 00 00
All code
========
0: 95 xchg %eax,%ebp
1: 01 00 add %eax,(%rax)
3: 05 25 36 02 00 add $0x23625,%eax
8: 83 ec 14 sub $0x14,%esp
b: 8d 80 e8 99 ff ff lea -0x6618(%rax),%eax
11: 50 push %rax
12: 6a 02 pushq $0x2
14: e8 1f ff 00 00 callq 0xff38
19: c7 04 24 7f 00 00 00 movl $0x7f,(%rsp)
20: e8 7e 87 01 00 callq 0x187a3
25: 66 90 xchg %ax,%ax
27: 90 nop
28: cd 80 int $0x80
2a:* c3 retq <-- trapping instruction
2b: 8d b6 00 00 00 00 lea 0x0(%rsi),%esi
31: 8d bc 27 00 00 00 00 lea 0x0(%rdi,%riz,1),%edi
38: 8b 1c 24 mov (%rsp),%ebx
3b: c3 retq
3c: 8d .byte 0x8d
3d: b6 00 mov $0x0,%dh
...
Code starting with the faulting instruction
===========================================
0: c3 retq
1: 8d b6 00 00 00 00 lea 0x0(%rsi),%esi
7: 8d bc 27 00 00 00 00 lea 0x0(%rdi,%riz,1),%edi
e: 8b 1c 24 mov (%rsp),%ebx
11: c3 retq
12: 8d .byte 0x8d
13: b6 00 mov $0x0,%dh
...
[ 6.087389][ T1] RSP: 002b:00000000ffc47418 EFLAGS: 00000296 ORIG_RAX: 0000000000000028
[ 6.088890][ T1] RAX: ffffffffffffffda RBX: 00000000567287d0 RCX: 00000000f7b0928c
[ 6.090266][ T1] RDX: 00000000f7f46440 RSI: 0000000000000000 RDI: 0000000000000001
[ 6.091612][ T1] RBP: 00000000f77e307c R08: 0000000000000000 R09: 0000000000000000
[ 6.092923][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 6.094354][ T1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 6.095618][ T1] </TASK>
[ 6.096174][ T1] ---[ end trace bc2fc7fcbaaa4bea ]---
[ 6.157221][ T2070] scsi 1:0:0:0: Attached scsi generic sg0 type 5
[ 6.181679][ T2070] sr 1:0:0:0: [sr0] scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[ 6.182949][ T2070] cdrom: Uniform CD-ROM driver Revision: 3.20
[ OK ] Started Raise network interfaces.
[ OK ] Started udev Coldplug all Devices.
[ 6.215433][ T2070] sr 1:0:0:0: Attached scsi CD-ROM sr0
[ OK ] Reached target System Initialization.
[ OK ] Listening on D-Bus System Message Bus Socket.
[ OK ] Reached target Sockets.
[ OK ] Reached target Basic System.
Starting Login Service...
[ OK ] Started D-Bus System Message Bus.
Starting LSB: Execute the kexec -e command to reboot system...
[ OK ] Started Regular background program processing daemon.
[ OK ] Started Daily apt download activities.
[ OK ] Started Daily apt upgrade and clean activities.
Starting System Logging Service...
[ OK ] Started Daily Cleanup of Temporary Directories.
[ OK ] Reached target Timers.
[ OK ] Reached target Network.
Starting OpenBSD Secure Shell server...
Starting LKP bootstrap...
Starting Permit User Sessions...
[ OK ] Reached target Network is Online.
Starting /etc/rc.local Compatibility...
Starting LSB: Start and stop bmc-watchdog...
[ OK ] Started Login Service.
[ OK ] Started Permit User Sessions.
[ OK ] Started LSB: Execute the kexec -e command to reboot system.
[ 6.234372] rc.local[2437]: PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/lkp/lkp/src/bin
[ OK ] Started /etc/rc.local Compatibility.
[ OK ] Started Getty on tty1.
[ OK ] Reached target Login Prompts.
Starting LSB: Load kernel image with kexec...
[ OK ] Started LSB: Start and stop bmc-watchdog.
[ 6.271554] rc.local[2437]: /lkp/lkp/src/bin/lkp-setup-rootfs: 78: /lkp/lkp/src/bin/lkp-setup-rootfs: cannot create /sys/devices/system/cpu/microcode/reload: Directory nonexistent
[ OK ] Started OpenBSD Secure Shell server.
[ OK ] Started LSB: Load kernel image with kexec.
LKP: ttyS0: 2469: Kernel tests: Boot OK!
LKP: ttyS0: 2469: HOSTNAME vm-snb-49, MAC d6:90:49:e5:94:ed, kernel 5.16.0-06542-g2bc22feae8a9 1
LKP: ttyS0: 2469: /lkp/lkp/src/bin/run-lkp /lkp/jobs/scheduled/vm-snb-49/boot-1-debian-i386-20191205.cgz-2bc22feae8a913c7f371bc79ef9967122d8d326c-20220404-23352-ifucqo-4.yaml
[ 16.268522][ T2492] LKP: stdout: 2469: Kernel tests: Boot OK!
[ 16.268534][ T2492]
[ 20.649263][ T2492] LKP: stdout: 2469: HOSTNAME vm-snb-49, MAC d6:90:49:e5:94:ed, kernel 5.16.0-06542-g2bc22feae8a9 1
[ 20.649275][ T2492]
LKP: ttyS0: 2469: LKP: rebooting forcely
[ 21.111051][ T2492] install debs round one: dpkg -i --force-confdef --force-depends /opt/deb/gawk_1%3a4.1.4+dfsg-1_i386.deb
[ 21.111062][ T2492]
[ 21.115095][ T2492] Selecting previously unselected package gawk.
[ 21.115102][ T2492]
[ 21.119713][ T2492] (Reading database ... 16210 files and directories currently installed.)
[ 21.119721][ T2492]
[ 21.124086][ T2492] Preparing to unpack .../gawk_1%3a4.1.4+dfsg-1_i386.deb ...
[ 21.124094][ T2492]
To reproduce:
# build kernel
cd linux
cp config-5.16.0-06542-g2bc22feae8a9 .config
make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config-5.16.0-06542-g2bc22feae8a9" of type "text/plain" (121960 bytes)
View attachment "job-script" of type "text/plain" (4696 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (14176 bytes)
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