linux-kernel - [per_cpu_ptr_to_phys] PANIC: early exception 0x0d IP 10:ffffffffa892f15f error 0 cr2 0xffff88001fbff000

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Message-ID: <20180418135553.zvw3loh52gbr7e2b@wfg-t540p.sh.intel.com>
Date:   Wed, 18 Apr 2018 21:55:53 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     linux-mm@...ck.org
Cc:     Tejun Heo <tj@...nel.org>, Christoph Lameter <cl@...ux.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Dennis Zhou <dennisszhou@...il.com>,
        Josef Bacik <jbacik@...com>, linux-kernel@...r.kernel.org,
        lkp@...org
Subject: [per_cpu_ptr_to_phys] PANIC: early exception 0x0d IP
 10:ffffffffa892f15f error 0 cr2 0xffff88001fbff000


Hello,

FYI here is a slightly different boot error in mainline kernel 4.17.0-rc1.
It also dates back to v4.16 .

It occurs in 4 out of 4 boots.

[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 128873
[    0.000000] Kernel command line: root=/dev/ram0 hung_task_panic=1 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 ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw link=/kbuild-tests/run-queue/kvm/x86_64-randconfig-a0-04172313/linux-devel:devel-hourly-2018041714:60cc43fc888428bb2f18f08997432d426a243338/.vmlinuz-60cc43fc888428bb2f18f08997432d426a243338-20180418000325-19:yocto-lkp-nhm-dp2-4 branch=linux-devel/devel-hourly-2018041714 BOOT_IMAGE=/pkg/linux/x86_64-randconfig-a0-04172313/gcc-7/60cc43fc888428bb2f18f08997432d426a243338/vmlinuz-4.17.0-rc1 drbd.minor_count=8 rcuperf.shutdown=0
[    0.000000] sysrq: sysrq always enabled.
[    0.000000] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
PANIC: early exception 0x0d IP 10:ffffffffa892f15f error 0 cr2 0xffff88001fbff000
[    0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G                T 4.17.0-rc1 #238
[    0.000000] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[    0.000000] RIP: 0010:per_cpu_ptr_to_phys+0x16a/0x298:
						__section_mem_map_addr at include/linux/mmzone.h:1188
						 (inlined by) per_cpu_ptr_to_phys at mm/percpu.c:1849
[    0.000000] RSP: 0000:ffffffffab407e50 EFLAGS: 00010046 ORIG_RAX: 0000000000000000
[    0.000000] RAX: dffffc0000000000 RBX: ffff88001f17c340 RCX: 000000000000000f
[    0.000000] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffffacfbf580
[    0.000000] RBP: ffffffffab40d000 R08: fffffbfff57c4eca R09: 0000000000000000
[    0.000000] R10: ffff880015421000 R11: fffffbfff57c4ec9 R12: 0000000000000000
[    0.000000] R13: ffff88001fb03ff8 R14: ffff88001fc051c0 R15: 0000000000000000
[    0.000000] FS:  0000000000000000(0000) GS:ffffffffab4c5000(0000) knlGS:0000000000000000
[    0.000000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.000000] CR2: ffff88001fbff000 CR3: 000000001a06c000 CR4: 00000000000006b0
[    0.000000] Call Trace:
[    0.000000]  setup_cpu_entry_areas+0x7b/0x27b:
						setup_cpu_entry_area at arch/x86/mm/cpu_entry_area.c:104
						 (inlined by) setup_cpu_entry_areas at arch/x86/mm/cpu_entry_area.c:177
[    0.000000]  trap_init+0xb/0x13d:
						trap_init at arch/x86/kernel/traps.c:949
[    0.000000]  start_kernel+0x2a5/0x91d:
						mm_init at init/main.c:519
						 (inlined by) start_kernel at init/main.c:589
[    0.000000]  ? thread_stack_cache_init+0x6/0x6
[    0.000000]  ? memcpy_orig+0x16/0x110:
						memcpy_orig at arch/x86/lib/memcpy_64.S:77
[    0.000000]  ? x86_family+0x5/0x1d:
						x86_family at arch/x86/lib/cpu.c:8
[    0.000000]  ? load_ucode_bsp+0x42/0x13e:
						load_ucode_bsp at arch/x86/kernel/cpu/microcode/core.c:183
[    0.000000]  secondary_startup_64+0xa5/0xb0:
						secondary_startup_64 at arch/x86/kernel/head_64.S:242
[    0.000000] Code: 78 06 00 49 8b 45 00 48 85 c0 74 a5 49 c1 ec 28 41 81 e4 e0 0f 00 00 49 01 c4 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 74 08 4c 89 e7 e8 63 78 06 00 49 8b 04 24 81 e5 ff
BUG: kernel hang in boot stage

Attached the full dmesg, kconfig and reproduce scripts.

Thanks,
Fengguang

View attachment "dmesg-yocto-lkp-nhm-dp2-4:20180418001052:x86_64-randconfig-a0-04172313:4.17.0-rc1:238" of type "text/plain" (12091 bytes)

View attachment ".config" of type "text/plain" (108545 bytes)

View attachment "reproduce-yocto-lkp-nhm-dp2-4:20180418001052:x86_64-randconfig-a0-04172313:4.17.0-rc1:238" of type "text/plain" (754 bytes)