On 11/27/2017 10:30 AM, syzbot wrote:
Hello,
syzkaller hit the following crash on
e1d1ea549b57790a3d8cf6300e6ef86118d692a3
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/master
compiler: gcc (GCC) 7.1.1 20170620
.config is attached
Raw console output is attached.
C reproducer is attached
syzkaller reproducer is attached. See
https://urldefense.proofpoint.com/v2/url?u=https-3A__goo.gl_kgGztJ&d=DwIBaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=hWpFvp_cTkkwMMULcvbV65orOO9Gv3OUaY0ATWhQwak&m=0pw38xYdDB2QuLTkc6b0N3240iyzMU13jwFZvLaxDSo&s=0kx55ufXFnBORomS71r4MtXomSqMRKhkHI1tGM3oPic&e=
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 224.0.0.2, 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.
Regards,
Santosh
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