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Date: Tue, 9 Aug 2016 23:07:53 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Thomas Garnier <thgarnie@...gle.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
"H . Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...e.de>,
Joerg Roedel <jroedel@...e.de>, Dave Young <dyoung@...hat.com>,
"Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
Lv Zheng <lv.zheng@...el.com>, Thomas Garnier <thgarnie@...gle.com>,
Baoquan He <bhe@...hat.com>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Mark Salter <msalter@...hat.com>,
Aleksey Makarov <aleksey.makarov@...aro.org>,
Kees Cook <keescook@...omium.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Christian Borntraeger <borntraeger@...ibm.com>,
Fabian Frederick <fabf@...net.be>, Toshi Kani <toshi.kani@...com>,
Dan Williams <dan.j.williams@...el.com>, x86@...nel.org,
linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com
Subject: [lkp] [x86/KASLR] 20067c4c13: kernel BUG at
arch/x86/mm/physaddr.c:26!
FYI, we noticed the following commit:
https://github.com/0day-ci/linux Thomas-Garnier/x86-KASLR-Fix-physical-memory-calculation-on-KASLR-memory-randomization/20160809-024226
commit 20067c4c139c7213205acd1c4b6f3e6d68327267 ("x86/KASLR: Fix physical memory calculation on KASLR memory randomization")
in testcase: boot
on test machine: 2 threads qemu-system-x86_64 -enable-kvm with 360M memory
caused below changes:
+------------------------------------------------------------------+------------+------------+
| | a064fd509d | 20067c4c13 |
+------------------------------------------------------------------+------------+------------+
| boot_successes | 90 | 0 |
| boot_failures | 8 | 32 |
| invoked_oom-killer:gfp_mask=0x | 8 | |
| Mem-Info | 8 | |
| Out_of_memory:Kill_process | 8 | |
| IP-Config:Auto-configuration_of_network_failed | 3 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 3 | |
| kernel_BUG_at_arch/x86/mm/physaddr.c | 0 | 32 |
| invalid_opcode:#[##]SMP_DEBUG_PAGEALLOC | 0 | 32 |
| RIP:__phys_addr | 0 | 32 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 32 |
| backtrace:hpet_enable | 0 | 32 |
| backtrace:hpet_time_init | 0 | 32 |
| backtrace:x86_late_time_init | 0 | 32 |
+------------------------------------------------------------------+------------+------------+
[ 0.000000] ---------------------------------
[ 0.000000] allocated 786432 bytes of page_ext
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] kernel BUG at arch/x86/mm/physaddr.c:26!
[ 0.000000] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.0-rc1-00007-g20067c4 #1
[ 0.000000] task: ffffffffaa615540 task.stack: ffffffffaa600000
[ 0.000000] RIP: 0010:[<ffffffffa9c36d74>] [<ffffffffa9c36d74>] __phys_addr+0x49/0x4d
[ 0.000000] RSP: 0000:ffffffffaa603e50 EFLAGS: 00010287
[ 0.000000] RAX: ffffefd2967dffff RBX: 00000000fed00000 RCX: ffffffff024000c0
[ 0.000000] RDX: 0000000000000002 RSI: 0000000000001000 RDI: ffff8800967dffff
[ 0.000000] RBP: ffffffffaa603e50 R08: 0000000000000000 R09: 0000000000000000
[ 0.000000] R10: 0000000000000000 R11: ffffffffaa616050 R12: 0000000000000002
[ 0.000000] R13: 0000000000001000 R14: ffffa9ddc0000000 R15: 0000000000000002
[ 0.000000] FS: 0000000000000000(0000) GS:ffff982d94600000(0000) knlGS:0000000000000000
[ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.000000] CR2: 00000000ffffffff CR3: 000000000c410000 CR4: 00000000000006b0
[ 0.000000] Stack:
[ 0.000000] ffffffffaa603e80 ffffffffa9c35f8b ffff982d940093c0 00000000fed00000
[ 0.000000] 0000000000001000 ffffa9ddc0000000 ffffffffaa603ef0 ffffffffa9c32b0a
[ 0.000000] 8000000000000173 0000000000000400 ffffffffaaa2fdb2 00000000fed00000
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffffa9c35f8b>] kernel_map_sync_memtype+0x24/0xd0
[ 0.000000] [<ffffffffa9c32b0a>] __ioremap_caller+0x222/0x2b5
[ 0.000000] [<ffffffffaaa2fdb2>] ? hpet_enable+0x2b/0x280
[ 0.000000] [<ffffffffa9c32baf>] ioremap_nocache+0x12/0x14
[ 0.000000] [<ffffffffaaa2fdb2>] hpet_enable+0x2b/0x280
[ 0.000000] [<ffffffffaaa256bb>] hpet_time_init+0x9/0x19
[ 0.000000] [<ffffffffaaa2568b>] x86_late_time_init+0xa/0x11
[ 0.000000] [<ffffffffaaa20e38>] start_kernel+0x37a/0x3f0
[ 0.000000] [<ffffffffaaa20120>] ? early_idt_handler_array+0x120/0x120
[ 0.000000] [<ffffffffaaa2029e>] x86_64_start_reservations+0x29/0x2b
[ 0.000000] [<ffffffffaaa203a7>] x86_64_start_kernel+0x107/0x114
[ 0.000000] Code: 48 39 c7 73 14 eb 24 48 03 05 b9 e2 9d 00 48 81 ff ff ff ff 3f 76 16 0f 0b 0f b6 0d 80 bb da 00 48 89 c2 48 d3 ea 48 85 d2 74 02 <0f> 0b 5d c3 b8 00 00 00 80 55 48 01 f8 48 3d ff ff ff 3f 48 89
[ 0.000000] RIP [<ffffffffa9c36d74>] __phys_addr+0x49/0x4d
[ 0.000000] RSP <ffffffffaa603e50>
[ 0.000000] ---[ end trace 0000000000000000 ]---
[ 0.000000] Kernel panic - not syncing: Fatal exception
FYI, raw QEMU command line is:
qemu-system-x86_64 -enable-kvm -kernel /pkg/linux/x86_64-randconfig-s5-08090447/gcc-6/20067c4c139c7213205acd1c4b6f3e6d68327267/vmlinuz-4.8.0-rc1-00007-g20067c4 -append 'ip=::::vm-vp-quantal-x86_64-39::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-x86_64-39/boot-1-quantal-core-x86_64.cgz-20067c4c139c7213205acd1c4b6f3e6d68327267-20160809-113128-1yh2kxs-1.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s5-08090447 branch=linux-devel/devel-hourly-2016080903 commit=20067c4c139c7213205acd1c4b6f3e6d68327267 BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s5-08090447/gcc-6/20067c4c139c7213205acd1c4b6f3e6d68327267/vmlinuz-4.8.0-rc1-00007-g20067c4 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-x86_64/quantal-core-x86_64.cgz/x86_64-randconfig-s5-08090447/gcc-6/20067c4c139c7213205acd1c4b6f3e6d68327267/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 systemd.log_level=err ignore_loglevel earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8' -initrd /fs/sdc1/initrd-vm-vp-quantal-x86_64-39 -m 360 -smp 2 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -watchdog-action debug -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-x86_64-39 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-x86_64-39 -daemonize -display none -monitor null
Thanks,
Xiaolong
View attachment "config-4.8.0-rc1-00007-g20067c4" of type "text/plain" (88034 bytes)
Download attachment "dmesg.xz" of type "application/octet-stream" (4568 bytes)
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