On 6/1/2017 7:32 PM, Bart Van Assche wrote:
On Thu, 2017-06-01 at 12:28 +0530, Asutosh Das (asd) wrote:
Please can you check if this is actually a bug and my understanding is
correct.
Hello Asutosh,
Spinlock recursion is always a bug. With what kernel version did you encounter
this? Was it with a kernel from kernel.org, a distro kernel or an Android
kernel?
Have you already tried to reproduce this with kernel debugging enabled? Enabling
CONFIG_DEBUG_SPINLOCK and CONFIG_PROVE_LOCKING should provide more detailed
information.
Bart.
Hello Bart,
Thanks.
It's on 4.4 and its an Android kernel.
No - I haven't tried it out yet. I could get some clues from the
call-stack itself, like I explained before. I can try these configs
though. While I do that, I'd like to know your thoughts on my analysis.
Do you think with the current data, it makes sense?
--
Asutosh.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a
Linux Foundation Collaborative Project
