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Date: Thu, 24 Sep 2020 22:30:49 +0800
From: kernel test robot <lkp@...el.com>
To: Ville Syrjälä <ville.syrjala@...ux.intel.com>
Cc: Lyude Paul <lyude@...hat.com>,
Daniel Vetter <daniel.vetter@...ll.ch>,
LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org,
lkp@...el.com
Subject: [drm/dp] 6509ca051a: PANIC:double_fault
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 6509ca051abf4ff60d63732badcb2173a715f741 ("drm/dp: Add drm_dp_downstream_{min,max}_tmds_clock()")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
in testcase: boot
on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------+------------+------------+
| | fe7cf496e5 | 6509ca051a |
+-------------------------------------------------------+------------+------------+
| boot_successes | 4 | 0 |
| boot_failures | 0 | 7 |
| PANIC:double_fault | 0 | 7 |
| double_fault:#[##] | 0 | 7 |
| EIP:handle_exception | 0 | 7 |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 7 |
+-------------------------------------------------------+------------+------------+
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <lkp@...el.com>
[ 15.006925] Applicom driver: $Id: ac.c,v 1.30 2000/03/22 16:03:57 dwmw2 Exp $
[ 15.007450] ac.o: No PCI boards found.
[ 15.007720] ac.o: For an ISA board you must supply memory and irq parameters.
[ 15.008278] toshiba: not a supported Toshiba laptop
[ 15.010558] random: get_random_u32 called from arch_rnd+0x1c/0x40 with crng_init=0
[ 15.011048] traps: PANIC: double fault, error_code: 0x0
[ 15.011048] double fault: 0000 [#1] PREEMPT SMP PTI
[ 15.011048] CPU: 1 PID: 147 Comm: modprobe Not tainted 5.9.0-rc4-00881-g6509ca051abf4 #1
[ 15.011048] EIP: handle_exception+0x0/0x128
[ 15.011048] Code: 24 10 36 89 48 fc 8b 4c 24 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 <fc> 0f a0 50 b8 d8 00 00 00 8e e0 58 81 64 24 10 ff ff 00 00 f7 44
[ 15.011048] EAX: 2262d000 EBX: ffa2efbc ECX: 00000000 EDX: c28dacf6
[ 15.011048] ESI: e2629ff0 EDI: ffa2f000 EBP: 00000000 ESP: ffa2e008
[ 15.011048] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010006
[ 15.011048] CR0: 80050033 CR2: ffa2dffc CR3: 02db2000 CR4: 000406b0
[ 15.011048] Call Trace:
[ 15.011048] <ENTRY_TRAMPOLINE>
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80/0x80
[ 15.011048] ? sysvec_kvm_asyncpf_interrupt+0x50/0x50
[ 15.011048] ? restore_all_switch_stack+0x80
[ 15.011048] Lost 217 message(s)!
[ 15.011048] ---[ end trace 94527bd98e02a7a3 ]---
[ 15.011048] EIP: handle_exception+0x0/0x128
[ 15.011048] Code: 24 10 36 89 48 fc 8b 4c 24 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 <fc> 0f a0 50 b8 d8 00 00 00 8e e0 58 81 64 24 10 ff ff 00 00 f7 44
[ 15.011048] EAX: 2262d000 EBX: ffa2efbc ECX: 00000000 EDX: c28dacf6
[ 15.011048] ESI: e2629ff0 EDI: ffa2f000 EBP: 00000000 ESP: ffa2e008
[ 15.011048] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010006
[ 15.011048] CR0: 80050033 CR2: ffa2dffc CR3: 02db2000 CR4: 000406b0
[ 15.011048] Kernel panic - not syncing: Fatal exception in interrupt
[ 15.011048] Kernel Offset: disabled
Kboot worker: lkp-worker30
Elapsed time: 60
To reproduce:
# build kernel
cd linux
cp config-5.9.0-rc4-00881-g6509ca051abf4 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage
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,
lkp
View attachment "config-5.9.0-rc4-00881-g6509ca051abf4" of type "text/plain" (120868 bytes)
View attachment "job-script" of type "text/plain" (4673 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (11124 bytes)
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