On Mon, Mar 19 2018, kernel test robot wrote:
> FYI, we noticed the following commit (built with gcc-6):
>
> commit: 184ecc5ceb379b43b29fc373f497fca88c73ad38 ("staging: lustre: allow
> monolithic builds")
> https://git.kernel.org/cgit/linux/kernel/git/gregkh/staging.git
> staging-testing
>
> 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-i386 -enable-kvm -smp 2 -m 320M
>
> caused below changes (please refer to attached dmesg/kmsg for entire
> log/backtrace):
>
>
> +------------------------------------------+------------+------------+
> | | 26f7a294e5 | 184ecc5ceb |
> +------------------------------------------+------------+------------+
> | boot_successes | 14 | 4 |
> | boot_failures | 0 | 12 |
> | BUG:unable_to_handle_kernel | 0 | 12 |
> | Oops:#[##] | 0 | 12 |
> | EIP:cfs_cpt_spread_node | 0 | 12 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 12 |
> +------------------------------------------+------------+------------+
>
>
>
> [ 123.548190] BUG: unable to handle kernel NULL pointer dereference at
> 00000008
> [ 123.551023] IP: cfs_cpt_spread_node+0x31/0x100Thanks. This happens when both USERIO and LNET are built into the kernel drivers/staging/lustre/TODO says LNET_MINOR conflicts with USERIO_MINOR I'll add a Kconfig rule preventing them from being built together until this is resolved properly. I'll also lok into making the module init routine more robust. Thanks, NeilBrown
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