Messages in this thread | | | From | "Teres Alexis, Alan Previn" <> | Subject | RE: [drm/i915/guc] a0f1f7b4f7: PANIC:double_fault | Date | Wed, 23 Mar 2022 12:06:17 +0000 |
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Hi Oliver, please give me a couple of days to debug this as I don't see how that Patch can cause or impact below failure since that patch only contains changes that get executed at runtime (not driver startup) and only on Gen9 and newer hardware that has GuC firmware feature.
...alan
-----Original Message----- From: Sang, Oliver <oliver.sang@intel.com> Sent: Wednesday, March 23, 2022 4:44 PM To: Teres Alexis, Alan Previn <alan.previn.teres.alexis@intel.com> Cc: lkp@lists.01.org; lkp <lkp@intel.com>; LKML <linux-kernel@vger.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@intel.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
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