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Message-ID: <20200613141933.GO12456@shao2-debian>
Date:   Sat, 13 Jun 2020 22:19:33 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Mike Kravetz <mike.kravetz@...cle.com>
Cc:     linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        overlayfs <linux-unionfs@...r.kernel.org>,
        linux-kernel@...r.kernel.org, Al Viro <viro@...iv.linux.org.uk>,
        Miklos Szeredi <miklos@...redi.hu>,
        Matthew Wilcox <willy@...radead.org>,
        Colin Walters <walters@...bum.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        syzbot <syzbot+d6ec23007e951dadf3de@...kaller.appspotmail.com>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>,
        Mike Kravetz <mike.kravetz@...cle.com>, lkp@...ts.01.org
Subject: [hugetlb] 5156c6c1b9: INFO:trying_to_register_non-static_key

Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: 5156c6c1b9313a42d1b0c50d287b083c326d1c3d ("[PATCH v4 1/2] hugetlb: use f_mode & FMODE_HUGETLBFS to identify hugetlbfs files")
url: https://github.com/0day-ci/linux/commits/Mike-Kravetz/hugetlb-use-f_mode-FMODE_HUGETLBFS-to-identify-hugetlbfs-files/20200612-092931
base: https://git.kernel.org/cgit/linux/kernel/git/mszeredi/vfs.git overlayfs-next

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 16G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+----------------------------------------------------------------------------+------------+------------+
|                                                                            | 2068cf7dfb | 5156c6c1b9 |
+----------------------------------------------------------------------------+------------+------------+
| boot_successes                                                             | 2          | 4          |
| boot_failures                                                              | 0          | 6          |
| INFO:trying_to_register_non-static_key                                     | 0          | 4          |
| BUG:kernel_hang_in_test_stage                                              | 0          | 3          |
| INFO:rcu_preempt_detected_stalls_on_CPUs/tasks                             | 0          | 1          |
| RIP:native_queued_spin_lock_slowpath                                       | 0          | 1          |
| RIP:mem_cgroup_throttle_swaprate                                           | 0          | 1          |
| BUG:soft_lockup-CPU##stuck_for#s![kworker/u4:#:#]                          | 0          | 1          |
| RIP:smp_call_function_single                                               | 0          | 1          |
| Kernel_panic-not_syncing:softlockup:hung_tasks                             | 0          | 1          |
| Kernel_panic-not_syncing:VFS:Unable_to_mount_root_fs_on_unknown-block(#,#) | 0          | 2          |
+----------------------------------------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <rong.a.chen@...el.com>


[   89.031987] INFO: trying to register non-static key.
[   89.036779] the code is fine but needs lockdep annotation.
[   89.038943] turning off the locking correctness validator.
[   89.041071] CPU: 0 PID: 761 Comm: trinity-c4 Not tainted 5.7.0-rc2-00031-g5156c6c1b9313 #1
[   89.045916] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   89.048728] Call Trace:
[   89.050420]  dump_stack+0x8f/0xd0
[   89.052122]  register_lock_class+0x6fd/0x710
[   89.053975]  ? lock_acquire+0xad/0x390
[   89.055680]  ? __might_fault+0x36/0x80
[   89.057371]  __lock_acquire+0x56/0xa90
[   89.059064]  lock_acquire+0xad/0x390
[   89.060704]  ? shm_add_rss_swap+0x2e/0x90
[   89.062562]  ? shmctl_shm_info+0x85/0x160
[   89.064436]  _raw_spin_lock_irq+0x3b/0x50
[   89.066211]  ? shm_add_rss_swap+0x2e/0x90
[   89.068084]  shm_add_rss_swap+0x2e/0x90
[   89.069967]  shmctl_shm_info+0xdf/0x160
[   89.071535]  ksys_shmctl+0x12f/0x1a0
[   89.073473]  ? rcu_read_lock_sched_held+0x52/0x90
[   89.075356]  ? syscall_trace_enter+0x31c/0x350
[   89.077151]  ? trace_hardirqs_off_caller+0x3f/0x100
[   89.079011]  ? do_syscall_64+0x1c/0xa0
[   89.080676]  do_syscall_64+0x5c/0xa0
[   89.082304]  entry_SYSCALL_64_after_hwframe+0x49/0xb3
[   89.086332] RIP: 0033:0x463519
[   89.087853] Code: 00 f3 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db 59 00 00 c3 66 2e 0f 1f 84 00 00 00 00
[   89.093621] RSP: 002b:00007ffd415ce978 EFLAGS: 00000246 ORIG_RAX: 000000000000001f
[   89.096196] RAX: ffffffffffffffda RBX: 000000000000001f RCX: 0000000000463519
[   89.098789] RDX: 0000000000000000 RSI: 000000000000000e RDI: 0000000000000800
[   89.101316] RBP: 00007fe46da60000 R08: 00000000000000fa R09: 00000000afafafaf
[   89.103974] R10: 0000000000080000 R11: 0000000000000246 R12: 0000000000000002
[   89.106517] R13: 00007fe46da60058 R14: 00000000013d0850 R15: 00007fe46da60000
[ 1040.151411] hrtimer: interrupt took 57997825 ns
BUG: kernel hang in test stage

Elapsed time: 3480

qemu-img create -f qcow2 disk-vm-snb-165-0 256G
qemu-img create -f qcow2 disk-vm-snb-165-1 256G
qemu-img create -f qcow2 disk-vm-snb-165-2 256G
qemu-img create -f qcow2 disk-vm-snb-165-3 256G
qemu-img create -f qcow2 disk-vm-snb-165-4 256G
qemu-img create -f qcow2 disk-vm-snb-165-5 256G
qemu-img create -f qcow2 disk-vm-snb-165-6 256G

kvm=(
	qemu-system-x86_64
	-enable-kvm
	-cpu SandyBridge
	-kernel $kernel
	-initrd initrd-vm-snb-165.cgz
	-m 8192
	-smp 2
	-device e1000,netdev=net0
	-netdev user,id=net0,hostfwd=tcp::32032-:22
	-boot order=nc
	-no-reboot
	-watchdog i6300esb
	-watchdog-action debug
	-rtc base=localtime
	-drive file=disk-vm-snb-165-0,media=disk,if=virtio
	-drive file=disk-vm-snb-165-1,media=disk,if=virtio
	-drive file=disk-vm-snb-165-2,media=disk,if=virtio
	-drive file=disk-vm-snb-165-3,media=disk,if=virtio
	-drive file=disk-vm-snb-165-4,media=disk,if=virtio
	-drive file=disk-vm-snb-165-5,media=disk,if=virtio
	-drive file=disk-vm-snb-165-6,media=disk,if=virtio
	-serial stdio
	-display none
	-monitor null
)

append=(
	ip=::::vm-snb-165::dhcp
	root=/dev/ram0
	user=lkp
	job=/job-script
	ARCH=x86_64
	kconfig=x86_64-rhel-7.6-kselftests
	branch=linux-devel/devel-catchup-202006120942
	commit=5156c6c1b9313a42d1b0c50d287b083c326d1c3d
	BOOT_IMAGE=/pkg/linux/x86_64-rhel-7.6-kselftests/gcc-9/5156c6c1b9313a42d1b0c50d287b083c326d1c3d/vmlinuz-5.7.0-rc2-00031-g5156c6c1b9313
	max_uptime=1500
	RESULT_ROOT=/result/trinity/300s/vm-snb/yocto-x86_64-minimal-20190520.cgz/x86_64-rhel-7.6-kselftests/gcc-9/5156c6c1b9313a42d1b0c50d287b083c326d1c3d/3
	result_service=tmpfs
	selinux=0
	debug
	apic=debug
	sysrq_always_enabled
	rcupdate.rcu_cpu_stall_timeout=100
	net.ifnames=0
	printk.devkmsg=on
	panic=-1
	softlockup_panic=1
	nmi_watchdog=panic
	oops=panic
	load_ramdisk=2
	prompt_ramdisk=0
	drbd.minor_count=8
	systemd.log_level=err


To reproduce:

        # build kernel
	cd linux
	cp config-5.7.0-rc2-00031-g5156c6c1b9313 .config
	make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare 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,
Rong Chen


View attachment "config-5.7.0-rc2-00031-g5156c6c1b9313" of type "text/plain" (205175 bytes)

View attachment "job-script" of type "text/plain" (4421 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (15264 bytes)

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