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SubjectRe: general protection fault in __rds_rdma_map
On 11/27/2017 10:30 AM, syzbot wrote:
> Hello,
> syzkaller hit the following crash on
> e1d1ea549b57790a3d8cf6300e6ef86118d692a3
> git://
> compiler: gcc (GCC) 7.1.1 20170620
> .config is attached
> Raw console output is attached.
> C reproducer is attached
> syzkaller reproducer is attached. See
> for information about syzkaller reproducers
> kasan: GPF could be caused by NULL-ptr deref or user memory access
> general protection fault: 0000 [#1] SMP KASAN
> RDS: rds_bind could not find a transport for, load rds_tcp or
> rds_rdma?

Seems like the RDMA operation got triggered on the non RDMA transport
lead to non populated rs->rs_transport->get_mr(). Also seems like the
tests was running in the namespace and the RDMA transport doesn't
yet support it. Thanks for reporting. Will look into fix internally.


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