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Groups > linux.kernel > #1323669
| From | Andrew Morton <akpm@linux-foundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [lkp] [kallsyms] bf2d2b07db: kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] general protection fault: 0000 [#1] PREEMPT PREEMPT KASANKASAN |
| Date | 2016-02-02 01:30 +0100 |
| Message-ID | <qXx11-2vh-27@gated-at.bofh.it> (permalink) |
| References | <qXx11-2vh-29@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Thu, 28 Jan 2016 09:12:15 +0800 kernel test robot <ying.huang@linux.intel.com> wrote:
> FYI, we noticed the below changes on
>
> https://git.linaro.org/people/ard.biesheuvel/linux-arm arm64-kaslr-v4a
> commit bf2d2b07db19001ae0bd55826025b0ba47fae0c2 ("kallsyms: add support for relative offsets in kallsyms address table")
>
>
> +-----------------------------------------------------------+------------+------------+
> | | 2c4d21df0f | bf2d2b07db |
> +-----------------------------------------------------------+------------+------------+
> | boot_successes | 10 | 0 |
> | boot_failures | 6 | 36 |
> | Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 2 | |
> | IP-Config:Auto-configuration_of_network_failed | 4 | |
> | general_protection_fault:#[##]PREEMPT_PREEMPT_KASANKASAN | 0 | 36 |
> | general_protection_fault:#[##] | 0 | 36 |
> | BUG:kernel_boot_hang | 0 | 36 |
> +-----------------------------------------------------------+------------+------------+
>
>
>
> [ 0.281636] kasan: CONFIG_KASAN_INLINE enabled
>
> [ 0.282416] kasan: GPF could be caused by NULL-ptr deref or user memory access
> [ 0.282416] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] general protection fault: 0000 [#1] PREEMPT PREEMPT KASANKASAN
>
> [ 0.284561] Modules linked in:
> [ 0.284561] Modules linked in:
>
> [ 0.285136] CPU: 0 PID: 1 Comm: swapper Not tainted 4.5.0-rc1-00036-gbf2d2b0 #1
> [ 0.285136] CPU: 0 PID: 1 Comm: swapper Not tainted 4.5.0-rc1-00036-gbf2d2b0 #1
> [ 0.286438] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
> [ 0.286438] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
> [ 0.288000] task: ffff88000fcb0000 ti: ffff88000fcb8000 task.ti: ffff88000fcb8000
> [ 0.288000] task: ffff88000fcb0000 ti: ffff88000fcb8000 task.ti: ffff88000fcb8000
> [ 0.289287] RIP: 0010:[<ffffffff8120688c>]
I'm not sufficiently familiar with KASAN to be able to interpret this.
Perhaps Andrey can shed some light?
The lack of symbol decoding is a problem.
CONFIG_KALLSYMS=y
CONFIG_KALLSYMS_ALL=y
CONFIG_KALLSYMS_BASE_RELATIVE=y
It should be there. Perhaps it is not because this error is itself
(possibly) related to kallsyms changes?
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Re: [lkp] [kallsyms] bf2d2b07db: kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] general protection fault: 0000 [#1] PREEMPT PREEMPT KASANKASAN Andrew Morton <akpm@linux-foundation.org> - 2016-02-02 01:30 +0100
Re: [lkp] [kallsyms] bf2d2b07db: kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] general protection fault: 0000 [#1] PREEMPT PREEMPT KASANKASAN Guenter Roeck <linux@roeck-us.net> - 2016-02-02 04:50 +0100
Re: [lkp] [kallsyms] bf2d2b07db: kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] general protection fault: 0000 [#1] PREEMPT PREEMPT KASANKASAN Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-02-02 08:00 +0100
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