Jarkko Nikula wrote:
On Tue, 23 Sep 2008 11:50:53 +0300 "ext Jarkko Nikula" <jarkko.nikula@xxxxxxxxx> wrote:On Tue, 23 Sep 2008 11:56:00 +0530 "ext Arun KS" <getarunks@xxxxxxxxx> wrote:Hi all, I am writing an ASOC driver for tlvaic23 on osk5912 platform. When do an aplay, I m getting a NULL pointer dereference. I added some debug prints in the soc/core/pcm_native.c, also in codec and platform drivers. The null pointer is comming in IOCTL SNDRV_PCM_IOCTL_SYNC_PTR. Log is pasted below.It's good that you can reproduce this on OSK as well. I think some configuration difference is revealing this bug out. For instance I can trigger this on Beagle with overo_defconfig + manually adding support for Beagle (CONFIG_MACH_OMAP3_BEAGLE=y) and ASoC Beagle (CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE=y). But I cannot reproduce this with Beagle defconfig + manually adding support for Overo (CONFIG_MACH_OVERO=y) and ASoC Beagle (CONFIG_SND_OMAP_SOC_OMAP3_BEAGLE=y).I narrowed this into CONFIG_SLUB. When it's set, I can reproduce the bug both with N810 and Beagle but not when using CONFIG_SLAB. Can you try will the problem disappear on your OSK and Overo if you select slab allocator instead? You find selection under "General setup" menu.
I've also verified this works on a Beagle with Angstrom. Thanks for tracking this down! Philip
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