On 7/21/19 4:49 PM, Luis Henriques wrote: > Waiman Long <[email protected]> writes: > >> On 7/20/19 4:41 AM, Luis Henriques wrote: >>> "Linus Torvalds" <[email protected]> writes: >>> >>>> On Fri, Jul 19, 2019 at 12:32 PM Waiman Long <[email protected]> wrote: >>>>> This patch shouldn't change the behavior of the rwsem code. The code >>>>> only access data within the rw_semaphore structures. I don't know why it >>>>> will cause a KASAN error. I will have to reproduce it and figure out >>>>> exactly which statement is doing the invalid access. >>>> The stack traces should show line numbers if you run them through >>>> scripts/decode_stacktrace.sh. >>>> >>>> You need to have debug info enabled for that, though. >>>> >>>> Luis? >>>> >>>> Linus >>> Yep, sure. And I should have done this in the initial report. It's a >>> different trace, I had to recompile the kernel. >>> >>> (I'm also adding Jeff to the CC list.) >>> >>> Cheers, >> Thanks for the information. I think I know where the problem is. Would >> you mind applying the attached patch to see if it can fix the KASAN error. > Yep, that seems to work -- I can't reproduce the error anymore (and > sorry for the delay). Thanks! And feel free to add my Tested-by. > > Cheers,
Thanks for the testing. I will post the official patch tomorrow. Cheers, Longman
