Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-02-14 Thread Herbert Xu
On Mon, Feb 13, 2017 at 09:20:48AM -0800, Tim Chen wrote: > > Megha is now able to create a test set up that produce > similar problem reported by Dmitry.  This patch did not > completely fix it.  So maybe you can hold off on merging > this patch to the mainline till we can develop a more >

Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-02-13 Thread Tim Chen
On Sat, 2017-02-11 at 18:50 +0800, Herbert Xu wrote: > On Wed, Feb 01, 2017 at 10:45:02AM -0800, Tim Chen wrote: > > > > > > One theory that Mehga and I have is that perhaps the flusher > > and regular computaion updates are stepping on each other.  > > Can you try this patch and see if it

Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-02-11 Thread Herbert Xu
On Wed, Feb 01, 2017 at 10:45:02AM -0800, Tim Chen wrote: > > One theory that Mehga and I have is that perhaps the flusher > and regular computaion updates are stepping on each other. > Can you try this patch and see if it helps? Patch applied. Thanks. -- Email: Herbert Xu

Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-02-02 Thread Tim Chen
On Thu, 2017-02-02 at 11:58 +0100, Dmitry Vyukov wrote: > On Wed, Feb 1, 2017 at 7:45 PM, Tim Chen wrote: > > > > On Tue, Jan 31, 2017 at 02:16:31PM +0100, Dmitry Vyukov wrote: > > > > > > Hello, > > > > > > I am getting the following reports with low frequency

Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-02-02 Thread Dmitry Vyukov
On Wed, Feb 1, 2017 at 7:45 PM, Tim Chen wrote: > On Tue, Jan 31, 2017 at 02:16:31PM +0100, Dmitry Vyukov wrote: >> Hello, >> >> I am getting the following reports with low frequency while running >> syzkaller fuzzer. Unfortunately they are not reproducible and happen

Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-02-01 Thread Tim Chen
On Tue, Jan 31, 2017 at 02:16:31PM +0100, Dmitry Vyukov wrote: > Hello, > > I am getting the following reports with low frequency while running > syzkaller fuzzer. Unfortunately they are not reproducible and happen > in a background thread, so it is difficult to extract any context on > my side.

Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-01-31 Thread Tim Chen
On Tue, 2017-01-31 at 14:16 +0100, Dmitry Vyukov wrote: > Hello, > > I am getting the following reports with low frequency while running > syzkaller fuzzer. Unfortunately they are not reproducible and happen > in a background thread, so it is difficult to extract any context on > my side. I see

crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2

2017-01-31 Thread Dmitry Vyukov
Hello, I am getting the following reports with low frequency while running syzkaller fuzzer. Unfortunately they are not reproducible and happen in a background thread, so it is difficult to extract any context on my side. I see only few such crashes per week, so most likely it is some hard to