From: kernel test robot <oliver.sang@intel.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>, <oliver.sang@intel.com>
Subject: [tglx-devel:x86/microcode] [x86/microcode/32] 7f1f6ace4c: BUG:unable_to_handle_page_fault_for_address
Date: Tue, 29 Aug 2023 15:59:31 +0800 [thread overview]
Message-ID: <202308291502.2d535a18-oliver.sang@intel.com> (raw)
Hello,
kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" on:
commit: 7f1f6ace4ce1c337bb7c10592ba522e8a91836e3 ("x86/microcode/32: Move early loading after paging enable")
https://git.kernel.org/cgit/linux/kernel/git/tglx/devel.git x86/microcode
in testcase: boot
compiler: clang-16
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+---------------------------------------------+------------+------------+
| | d2700f4067 | 7f1f6ace4c |
+---------------------------------------------+------------+------------+
| boot_successes | 13 | 0 |
| boot_failures | 0 | 12 |
| BUG:unable_to_handle_page_fault_for_address | 0 | 12 |
| Oops:#[##] | 0 | 12 |
| EIP:load_ucode_ap | 0 | 12 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 12 |
+---------------------------------------------+------------+------------+
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202308291502.2d535a18-oliver.sang@intel.com
[ 0.139017][ T0] BUG: unable to handle page fault for address: 027025c4
[ 0.139017][ T0] #PF: supervisor read access in kernel mode
[ 0.139017][ T0] #PF: error_code(0x0000) - not-present page
[ 0.139017][ T0] *pde = 00000000
[ 0.139017][ T0] Oops: 0000 [#1] PREEMPT SMP
[ 0.139017][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.5.0-rc3-00012-g7f1f6ace4ce1 #1 0b760317710af5cd94fc9e004982f482d14400de
[ 0.139017][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 0.139017][ T0] EIP: load_ucode_ap (arch/x86/kernel/cpu/microcode/core.c:177 arch/x86/kernel/cpu/microcode/core.c:187)
[ 0.139017][ T0] Code: c2 a1 34 69 ce c2 eb c7 83 c4 04 5e 5f 5b 5d c3 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 3e 8d 74 26 00 55 89 e5 53 57 56 <80> 3d c4 25 70 02 00 74 05 5e 5f 5b 5d c3 b8 01 00 00 00 31 c9 0f
All code
========
0: c2 a1 34 retq $0x34a1
3: 69 ce c2 eb c7 83 imul $0x83c7ebc2,%esi,%ecx
9: c4 (bad)
a: 04 5e add $0x5e,%al
c: 5f pop %rdi
d: 5b pop %rbx
e: 5d pop %rbp
f: c3 retq
10: 00 00 add %al,(%rax)
12: cc int3
13: cc int3
14: 00 00 add %al,(%rax)
16: cc int3
17: cc int3
18: 00 00 add %al,(%rax)
1a: cc int3
1b: cc int3
1c: 00 00 add %al,(%rax)
1e: cc int3
1f: 3e 8d 74 26 00 lea %ds:0x0(%rsi,%riz,1),%esi
24: 55 push %rbp
25: 89 e5 mov %esp,%ebp
27: 53 push %rbx
28: 57 push %rdi
29: 56 push %rsi
2a:* 80 3d c4 25 70 02 00 cmpb $0x0,0x27025c4(%rip) # 0x27025f5 <-- trapping instruction
31: 74 05 je 0x38
33: 5e pop %rsi
34: 5f pop %rdi
35: 5b pop %rbx
36: 5d pop %rbp
37: c3 retq
38: b8 01 00 00 00 mov $0x1,%eax
3d: 31 c9 xor %ecx,%ecx
3f: 0f .byte 0xf
Code starting with the faulting instruction
===========================================
0: 80 3d c4 25 70 02 00 cmpb $0x0,0x27025c4(%rip) # 0x27025cb
7: 74 05 je 0xe
9: 5e pop %rsi
a: 5f pop %rdi
b: 5b pop %rbx
c: 5d pop %rbp
d: c3 retq
e: b8 01 00 00 00 mov $0x1,%eax
13: 31 c9 xor %ecx,%ecx
15: 0f .byte 0xf
[ 0.139017][ T0] EAX: 00000000 EBX: 01020800 ECX: ff008983 EDX: ff000000
[ 0.139017][ T0] ESI: 00000000 EDI: 00000000 EBP: c405df9c ESP: c405df90
[ 0.139017][ T0] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 EFLAGS: 00210046
[ 0.139017][ T0] CR0: 80050033 CR2: 027025c4 CR3: 02cdf000 CR4: 00000090
[ 0.139017][ T0] Call Trace:
[ 0.139017][ T0] ? __die_body (arch/x86/kernel/dumpstack.c:478 arch/x86/kernel/dumpstack.c:420)
[ 0.139017][ T0] ? __die (arch/x86/kernel/dumpstack.c:434)
[ 0.139017][ T0] ? page_fault_oops (arch/x86/mm/fault.c:703)
[ 0.139017][ T0] ? kernelmode_fixup_or_oops (arch/x86/mm/fault.c:761)
[ 0.139017][ T0] ? __bad_area_nosemaphore (arch/x86/mm/fault.c:817)
[ 0.139017][ T0] ? bad_area_nosemaphore (arch/x86/mm/fault.c:866)
[ 0.139017][ T0] ? do_user_addr_fault (arch/x86/mm/fault.c:?)
[ 0.139017][ T0] ? exc_page_fault (arch/x86/include/asm/irqflags.h:19 arch/x86/include/asm/irqflags.h:67 arch/x86/include/asm/irqflags.h:127 arch/x86/mm/fault.c:1494 arch/x86/mm/fault.c:1542)
[ 0.139017][ T0] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1499)
[ 0.139017][ T0] ? handle_exception (init_task.c:?)
[ 0.139017][ T0] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1499)
[ 0.139017][ T0] ? load_ucode_ap (arch/x86/kernel/cpu/microcode/core.c:177 arch/x86/kernel/cpu/microcode/core.c:187)
[ 0.139017][ T0] ? pvclock_clocksource_read_nowd (arch/x86/mm/fault.c:1499)
[ 0.139017][ T0] ? load_ucode_ap (arch/x86/kernel/cpu/microcode/core.c:177 arch/x86/kernel/cpu/microcode/core.c:187)
[ 0.139017][ T0] start_secondary (arch/x86/kernel/smpboot.c:283)
[ 0.139017][ T0] startup_32_smp (??:?)
[ 0.139017][ T0] Modules linked in:
[ 0.139017][ T0] CR2: 00000000027025c4
[ 0.139017][ T0] ---[ end trace 0000000000000000 ]---
[ 0.139017][ T0] EIP: load_ucode_ap (arch/x86/kernel/cpu/microcode/core.c:177 arch/x86/kernel/cpu/microcode/core.c:187)
[ 0.139017][ T0] Code: c2 a1 34 69 ce c2 eb c7 83 c4 04 5e 5f 5b 5d c3 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 3e 8d 74 26 00 55 89 e5 53 57 56 <80> 3d c4 25 70 02 00 74 05 5e 5f 5b 5d c3 b8 01 00 00 00 31 c9 0f
All code
========
0: c2 a1 34 retq $0x34a1
3: 69 ce c2 eb c7 83 imul $0x83c7ebc2,%esi,%ecx
9: c4 (bad)
a: 04 5e add $0x5e,%al
c: 5f pop %rdi
d: 5b pop %rbx
e: 5d pop %rbp
f: c3 retq
10: 00 00 add %al,(%rax)
12: cc int3
13: cc int3
14: 00 00 add %al,(%rax)
16: cc int3
17: cc int3
18: 00 00 add %al,(%rax)
1a: cc int3
1b: cc int3
1c: 00 00 add %al,(%rax)
1e: cc int3
1f: 3e 8d 74 26 00 lea %ds:0x0(%rsi,%riz,1),%esi
24: 55 push %rbp
25: 89 e5 mov %esp,%ebp
27: 53 push %rbx
28: 57 push %rdi
29: 56 push %rsi
2a:* 80 3d c4 25 70 02 00 cmpb $0x0,0x27025c4(%rip) # 0x27025f5 <-- trapping instruction
31: 74 05 je 0x38
33: 5e pop %rsi
34: 5f pop %rdi
35: 5b pop %rbx
36: 5d pop %rbp
37: c3 retq
38: b8 01 00 00 00 mov $0x1,%eax
3d: 31 c9 xor %ecx,%ecx
3f: 0f .byte 0xf
Code starting with the faulting instruction
===========================================
0: 80 3d c4 25 70 02 00 cmpb $0x0,0x27025c4(%rip) # 0x27025cb
7: 74 05 je 0xe
9: 5e pop %rsi
a: 5f pop %rdi
b: 5b pop %rbx
c: 5d pop %rbp
d: c3 retq
e: b8 01 00 00 00 mov $0x1,%eax
13: 31 c9 xor %ecx,%ecx
15: 0f .byte 0xf
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20230829/202308291502.2d535a18-oliver.sang@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next reply other threads:[~2023-08-29 7:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-29 7:59 kernel test robot [this message]
[not found] ` <DS7PR11MB59651DCF238053376F5927C88FE6A@DS7PR11MB5965.namprd11.prod.outlook.com>
2023-08-30 14:04 ` [tglx-devel:x86/microcode] [x86/microcode/32] 7f1f6ace4c: BUG:unable_to_handle_page_fault_for_address Zhuo, Qiuxu
2023-08-30 17:08 ` Thomas Gleixner
2023-08-31 2:38 ` Zhuo, Qiuxu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202308291502.2d535a18-oliver.sang@intel.com \
--to=oliver.sang@intel.com \
--cc=lkp@intel.com \
--cc=oe-lkp@lists.linux.dev \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.