Messages in this thread | | | Subject | Re: general protection fault in __rds_rdma_map | From | Santosh Shilimkar <> | Date | Mon, 27 Nov 2017 12:39:51 -0800 |
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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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