Re: [PATCH v7 16/25] arm: Add support for generic vDSO (causing crash)

[Guenter Roeck]

On Fri, Jun 21, 2019 at 10:52:43AM +0100, Vincenzo Frascino wrote:
> The arm vDSO library requires some adaptations to use to take advantage
> of the newly introduced generic vDSO library.
> 
> Introduce the following changes:
>  - Modification vdso.c to be compliant with the common vdso datapage
>  - Use of lib/vdso for gettimeofday
>  - Implementation of elf note
> 
> Cc: Russell King <linux@xxxxxxxxxxxxxxx>
> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@xxxxxxx>

This patch causes a crash with qemu's mcimx6ul-evk emulation while running
imx_v6_v7_defconfig.

[   19.976852] Run /sbin/init as init process
[   20.044931] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004

There is nothing else useful in the log, unfortunately.

Reverting the following three patches fixes the problem.

74d06efb9c2f ARM: 8932/1: Add clock_gettime64 entry point
052e76a31b4a ARM: 8931/1: Add clock_getres entry point
20e2fc42312f ARM: 8930/1: Add support for generic vDSO

Guenter