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Message-ID: <20220323084351.GF16885@xsang-OptiPlex-9020>
Date: Wed, 23 Mar 2022 16:43:51 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Alan Previn <alan.previn.teres.alexis@...el.com>
Cc: lkp@...ts.01.org, lkp@...el.com,
LKML <linux-kernel@...r.kernel.org>
Subject: [drm/i915/guc] a0f1f7b4f7: PANIC:double_fault
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: a0f1f7b4f74fc6eaee0b6783af40dacf431df7b4 ("drm/i915/guc: Print the GuC error capture output register list.")
git://anongit.freedesktop.org/drm/drm-intel drm-intel-gt-next
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------+------------+------------+
| | a6f0f9cf33 | a0f1f7b4f7 |
+-------------------------------------------------------+------------+------------+
| boot_successes | 13 | 0 |
| boot_failures | 0 | 6 |
| PANIC:double_fault | 0 | 6 |
| double_fault:#[##] | 0 | 6 |
| EIP:handle_exception | 0 | 6 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 6 |
+-------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 8.717641][ T1] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 8.719470][ T1] 00:06: ttyS1 at I/O 0x2f8 (irq = 3, base_baud = 115200) is a 16550A
[ 8.722059][ T1] sonypi: Sony Programmable I/O Controller Driver v1.26.
[ 8.722872][ T1] Non-volatile memory driver v1.3
[ 8.724009][ T36] random: get_random_u32 called from arch_rnd+0x14/0x40 with crng_init=0
[ 8.724275][ C0] traps: PANIC: double fault, error_code: 0x0
[ 8.724278][ C0] double fault: 0000 [#1] PTI
[ 8.724282][ C0] CPU: 0 PID: 36 Comm: modprobe Not tainted 5.17.0-rc4-01232-ga0f1f7b4f74f #29
[ 8.724285][ C0] EIP: handle_exception (kbuild/src/rand-4/arch/x86/entry/entry_32.S:1064)
[ 8.724292][ C0] Code: 0c 81 e1 ff ff 00 00 36 89 48 f8 8b 4c 24 08 36 89 48 f4 8b 4c 24 04 36 89 48 f0 59 8d 60 f0 58 cf 6a 00 68 80 0d 3f d7 eb 00 <fc> 0f a0 50 b8 00 00 00 00 8e e0 58 81 64 24 10 ff ff 00 00 f7 44
All code
========
0: 0c 81 or $0x81,%al
2: e1 ff loope 0x3
4: ff 00 incl (%rax)
6: 00 36 add %dh,(%rsi)
8: 89 48 f8 mov %ecx,-0x8(%rax)
b: 8b 4c 24 08 mov 0x8(%rsp),%ecx
f: 36 89 48 f4 mov %ecx,%ss:-0xc(%rax)
13: 8b 4c 24 04 mov 0x4(%rsp),%ecx
17: 36 89 48 f0 mov %ecx,%ss:-0x10(%rax)
1b: 59 pop %rcx
1c: 8d 60 f0 lea -0x10(%rax),%esp
1f: 58 pop %rax
20: cf iret
21: 6a 00 pushq $0x0
23: 68 80 0d 3f d7 pushq $0xffffffffd73f0d80
28: eb 00 jmp 0x2a
2a:* fc cld <-- trapping instruction
2b: 0f a0 pushq %fs
2d: 50 push %rax
2e: b8 00 00 00 00 mov $0x0,%eax
33: 8e e0 mov %eax,%fs
35: 58 pop %rax
36: 81 64 24 10 ff ff 00 andl $0xffff,0x10(%rsp)
3d: 00
3e: f7 .byte 0xf7
3f: 44 rex.R
Code starting with the faulting instruction
===========================================
0: fc cld
1: 0f a0 pushq %fs
3: 50 push %rax
4: b8 00 00 00 00 mov $0x0,%eax
9: 8e e0 mov %eax,%fs
b: 58 pop %rax
c: 81 64 24 10 ff ff 00 andl $0xffff,0x10(%rsp)
13: 00
14: f7 .byte 0xf7
15: 44 rex.R
[ 8.724295][ C0] EAX: 020e9000 EBX: ffa03fbc ECX: 00000000 EDX: 00000000
[ 8.724297][ C0] ESI: c20e7ff0 EDI: ffa04000 EBP: 420e7fac ESP: ffa03008
[ 8.724299][ C0] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010006
[ 8.724305][ C0] CR0: 80050033 CR2: ffa02ffc CR3: 17f06000 CR4: 000406b0
[ 8.724307][ C0] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 8.724309][ C0] DR6: fffe0ff0 DR7: 00000400
[ 8.724310][ C0] Call Trace:
[ 8.724312][ C0] <ENTRY_TRAMPOLINE>
[ 8.724313][ C0] ? paravirt_BUG (kbuild/src/rand-4/arch/x86/mm/fault.c:1497)
[ 8.724318][ C0] ? restore_all_switch_stack (kbuild/src/rand-4/arch/x86/entry/entry_32.S:1064)
[ 8.724322][ C0] ? paravirt_BUG (kbuild/src/rand-4/arch/x86/mm/fault.c:1497)
[ 8.724324][ C0] ? restore_all_switch_stack (kbuild/src/rand-4/arch/x86/entry/entry_32.S:1064)
To reproduce:
# build kernel
cd linux
cp config-5.17.0-rc4-01232-ga0f1f7b4f74f .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 INSTALL_MOD_PATH=<mod-install-dir> modules_install
cd <mod-install-dir>
find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> -m modules.cgz job-script # job-script is attached in this email
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config-5.17.0-rc4-01232-ga0f1f7b4f74f" of type "text/plain" (150527 bytes)
View attachment "job-script" of type "text/plain" (4734 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (9596 bytes)
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