On Wed, Aug 18, 2021 at 11:32 AM Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> wrote: > > On Wed, Aug 18, 2021 at 11:25:53AM +0800, Dongliang Mu wrote: > > > > diff --git a/net/xfrm/xfrm_ipcomp.c b/net/xfrm/xfrm_ipcomp.c > > index cb40ff0ff28d..01dbec70dfba 100644 > > --- a/net/xfrm/xfrm_ipcomp.c > > +++ b/net/xfrm/xfrm_ipcomp.c > > @@ -223,9 +223,9 @@ static void * __percpu *ipcomp_alloc_scratches(void) > > void *scratch; > > > > scratch = vmalloc_node(IPCOMP_SCRATCH_SIZE, cpu_to_node(i)); > > + *per_cpu_ptr(scratches, i) = scratch; > > if (!scratch) > > return NULL; > > - *per_cpu_ptr(scratches, i) = scratch; > > scratches comes from alloc_percpu so it should already be zeroed. Correct. :\ Then I have no idea how this crash occurs. This crash report does not have any reproducer. It seems like a random crash, but I am not sure. If you have any patch for this crash, please let me know. > > Cheers, > -- > Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> > Home Page: http://gondor.apana.org.au/~herbert/ > PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
