Messages in this thread | | | Date | Thu, 28 Sep 2017 09:59:07 +0200 | From | Ingo Molnar <> | Subject | Re: [lkp-robot] [x86/asm] f5caf621ee: PANIC:double_fault |
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* kernel test robot <xiaolong.ye@intel.com> wrote:
> > FYI, we noticed the following commit: > > commit: f5caf621ee357279e759c0911daf6d55c7d36f03 ("x86/asm: Fix inline asm call constraints for Clang") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > in testcase: trinity > with following parameters: > > runtime: 300s > > test-description: Trinity is a linux system call fuzz tester. > test-url: http://codemonkey.org.uk/projects/trinity/ > > > on test machine: qemu-system-x86_64 -enable-kvm -m 420M > > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): > > > +-----------------------------------------+------------+------------+ > | | 0d0970eef3 | f5caf621ee | > +-----------------------------------------+------------+------------+ > | boot_successes | 9 | 4 | > | boot_failures | 0 | 4 | > | PANIC:double_fault | 0 | 4 | > | Kernel_panic-not_syncing:Machine_halted | 0 | 4 | > +-----------------------------------------+------------+------------+
I think a key piece of information is that the test is using GCC 4.4:
export compiler='gcc-4.4'
... which is pretty old compared to what gets tested typically.
GCC 4.4 was released in 2009 (!), the last minor update of 4.4.7 was 5 years ago.
Thanks,
Ingo
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