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Date: Tue, 26 Dec 2017 10:03:35 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>,
Borislav Petkov <bp@...en8.de>,
Brian Gerst <brgerst@...il.com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
David Laight <David.Laight@...lab.com>,
Denys Vlasenko <dvlasenk@...hat.com>,
Eduardo Valentin <eduval@...zon.com>,
Greg KH <gregkh@...uxfoundation.org>,
"H. Peter Anvin" <hpa@...or.com>,
Josh Poimboeuf <jpoimboe@...hat.com>,
Juergen Gross <jgross@...e.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Will Deacon <will.deacon@....com>,
LKML <linux-kernel@...r.kernel.org>,
Thomas Gleixner <tglx@...utronix.de>, tipbuild@...or.com,
lkp@...org
Subject: [lkp-robot] [x86/cpu_entry_area] 10043e02db:
kernel_BUG_at_arch/x86/mm/physaddr.c
FYI, we noticed the following commit (built with gcc-6):
commit: 10043e02db7f8a4161f76434931051e7d797a5f6 ("x86/cpu_entry_area: Add debugstore entries to cpu_entry_area")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git WIP.x86/pti
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 IvyBridge -m 420M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------------+------------+------------+
| | 4b6bbe95b8 | 10043e02db |
+------------------------------------------------+------------+------------+
| boot_successes | 8 | 0 |
| boot_failures | 0 | 8 |
| kernel_BUG_at_arch/x86/mm/physaddr.c | 0 | 6 |
| PANIC:early_exception | 0 | 6 |
| RIP:__phys_addr | 0 | 6 |
| BUG:soft_lockup-CPU##stuck_for#s | 0 | 2 |
| RIP:rb_erase | 0 | 1 |
| Kernel_panic-not_syncing:softlockup:hung_tasks | 0 | 2 |
| RIP:rbtree_test_init | 0 | 1 |
+------------------------------------------------+------------+------------+
[ 0.000000] kernel BUG at arch/x86/mm/physaddr.c:27!
PANIC: early exception 0x06 IP 10:ffffffff8115586f error 0 cr2 0xffff88000e468000
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.14.0-00160-g10043e02 #1
[ 0.000000] task: ffffffff8a4683c0 task.stack: ffffffff8a400000
[ 0.000000] RIP: 0010:__phys_addr+0x268/0x276
[ 0.000000] RSP: 0000:ffffffff8a407bd8 EFLAGS: 00010002 ORIG_RAX: 0000000000000000
[ 0.000000] RAX: 0000000000000000 RBX: 0000780000000000 RCX: 1ffffffff17a9a01
[ 0.000000] RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffffffff8bd4d340
[ 0.000000] RBP: ffffffff8a407bf8 R08: 0000000000000001 R09: ffffffff8a407a48
[ 0.000000] R10: ffff880000010000 R11: ffff880000010fff R12: 0000000000000001
[ 0.000000] R13: 0000000000000001 R14: 0000000000000000 R15: fffffbd00c401000
[ 0.000000] FS: 0000000000000000(0000) GS:ffffffff8cb4d000(0000) knlGS:0000000000000000
[ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.000000] CR2: ffff88000e468000 CR3: 000000000cde8000 CR4: 00000000000406b0
[ 0.000000] Call Trace:
[ 0.000000] kasan_populate_shadow+0x3f2/0x497
[ 0.000000] ? 0xffffffff81000000
[ 0.000000] kasan_init+0x12e/0x2b2
[ 0.000000] setup_arch+0x2825/0x2a2c
[ 0.000000] ? reserve_standard_io_resources+0x36/0x36
[ 0.000000] ? vprintk_func+0x1ed/0x1f6
[ 0.000000] ? printk+0x94/0xb0
[ 0.000000] ? show_regs_print_info+0x60/0x60
[ 0.000000] start_kernel+0xc8/0x15f4
[ 0.000000] ? mem_encrypt_init+0xb/0xb
[ 0.000000] ? early_idt_handler_common+0x3b/0x52
[ 0.000000] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] x86_64_start_kernel+0x72/0x75
[ 0.000000] secondary_startup_64+0xa5/0xb0
[ 0.000000] Code: e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 74 0a be 08 00 00 00 e8 0a f5 77 00 49 8d 75 02 48 ff 04 f5 28 d3 d4 8b 45 84 e4 74 02 <0f> 0b 48 89 d8 5b 41 5c 41 5d 41 5e 5d c3 e8 9e c1 0a 07 55 b8
Elapsed time: 10
#!/bin/bash
# To reproduce,
# 1) save job-script and this script (both are attached in 0day report email)
# 2) run this script with your compiled kernel and optional env $INSTALL_MOD_PATH
kernel=$1
initrds=(
/osimage/yocto/yocto-tiny-i386-2016-04-22.cgz
/lkp/lkp/lkp-i386.cgz
/osimage/deps/debian-x86_64-2016-08-31.cgz/run-ipconfig.i386_2016-09-03.cgz
/osimage/pkg/debian-x86_64-2016-08-31.cgz/trinity-static-i386-x86_64-6ddabfd2_2017-11-10.cgz
)
HTTP_PREFIX=https://github.com/0day-ci/lkp-qemu/raw/master
wget --timestamping "${initrds[@]/#/$HTTP_PREFIX}"
{
cat "${initrds[@]//*\//}"
[[ $INSTALL_MOD_PATH ]] && (
cd "$INSTALL_MOD_PATH"
find lib | cpio -o -H newc --quiet | gzip
)
echo job-script | cpio -o -H newc --quiet | gzip
} > initrd.img
qemu-img create -f qcow2 disk-vm-ivb41-yocto-ia32-30-0 256G
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu IvyBridge
-kernel $kernel
-initrd initrd.img
-m 420
-smp 1
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-watchdog-action debug
-rtc base=localtime
-drive file=disk-vm-ivb41-yocto-ia32-30-0,media=disk,if=virtio
-serial stdio
-display none
-monitor null
)
append=(
ip=::::vm-ivb41-yocto-ia32-30::dhcp
root=/dev/ram0
user=lkp
job=/job-script
ARCH=x86_64
kconfig=x86_64-randconfig-ne0-12241015
branch=linux-devel/devel-catchup-201712241239
commit=10043e02db7f8a4161f76434931051e7d797a5f6
BOOT_IMAGE=/pkg/linux/x86_64-randconfig-ne0-12241015/gcc-6/10043e02db7f8a4161f76434931051e7d797a5f6/vmlinuz-4.14.0-00160-g10043e02
max_uptime=1500
RESULT_ROOT=/result/trinity/300s/vm-ivb41-yocto-ia32/yocto-tiny-i386-2016-04-22.cgz/x86_64-randconfig-ne0-12241015/gcc-6/10043e02db7f8a4161f76434931051e7d797a5f6/0
result_service=tmpfs
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
net.ifnames=0
To reproduce:
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,
Xiaolong
View attachment "config-4.14.0-00160-g10043e02" of type "text/plain" (137218 bytes)
View attachment "job-script" of type "text/plain" (3838 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (3588 bytes)
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