> Subject: [BUGReport for rdma in kernel5.2-rc4]
>
>
> Hi Shiraz & Jason,
>
> We have observed a crash when run perftest on a hisilicon arm64 platform in
> kernel-5.2-rc4.
>
> We also tested with different kernel version and found it started from the the
> following commit:
> d10bcf947a3e ("RDMA/umem: Combine contiguous PAGE_SIZE regions in
> SGEs")
>
> Could you please share any hint how to resolve this kind issue?
> Thanks!
>
Hi Lijun - I am presuming you had this fix too?
"RDMA/umem: Handle page combining avoidance correctly in ib_umem_add_sg_table()"
https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/drivers/infiniband/core/umem.c?h=v5.2-rc4&id=7872168a839144dbbfb33125262dab0673f9ddf5
As Jason mentioned, provide the stack backtrace.
Shiraz
