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kernel_optimize_test/net/sunrpc/auth_gss
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Chuck Lever 5866efa8cb SUNRPC: Fix svcauth_gss_proxy_init() 
gss_read_proxy_verf() assumes things about the XDR buffer containing
the RPC Call that are not true for buffers generated by
svc_rdma_recv().

RDMA's buffers look more like what the upper layer generates for
sending: head is a kmalloc'd buffer; it does not point to a page
whose contents are contiguous with the first page in the buffers'
page array. The result is that ACCEPT_SEC_CONTEXT via RPC/RDMA has
stopped working on Linux NFS servers that use gssproxy.

This does not affect clients that use only TCP to send their
ACCEPT_SEC_CONTEXT operation (that's all Linux clients). Other
clients, like Solaris NFS clients, send ACCEPT_SEC_CONTEXT on the
same transport as they send all other NFS operations. Such clients
can send ACCEPT_SEC_CONTEXT via RPC/RDMA.

I thought I had found every direct reference in the server RPC code
to the rqstp->rq_pages field.

Bug found at the 2019 Westford NFS bake-a-thon.

Fixes: 3316f06311 ("svcrdma: Persistently allocate and DMA- ... ")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Bill Baker <bill.baker@oracle.com>
Reviewed-by: Simo Sorce <simo@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2019-10-30 16:32:37 -04:00
..
auth_gss.c SUNRPC: Rename xdr_buf_read_netobj to xdr_buf_read_mic 2019-09-20 15:15:24 -04:00
gss_generic_token.c
gss_krb5_crypto.c crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
gss_krb5_keys.c sunrpc: Use kzfree rather than its implementation. 2019-09-05 12:06:04 +02:00
gss_krb5_mech.c crypto: shash - remove shash_desc::flags 2019-04-25 15:38:12 +08:00
gss_krb5_seal.c SUNRPC: Use atomic(64)_t for seq_send(64) 2018-11-01 13:55:24 -04:00
gss_krb5_seqnum.c sunrpc: fix 4 more call sites that were using stack memory with a scatterlist 2019-02-15 14:56:51 -05:00
gss_krb5_unseal.c
gss_krb5_wrap.c SUNRPC: Remove xdr_buf_trim() 2019-02-14 09:39:34 -05:00
gss_mech_switch.c SUNRPC: Trace gssproxy upcall results 2019-10-30 16:32:07 -04:00
gss_rpc_upcall.c SUNRPC: Add SPDX IDs to some net/sunrpc/auth_gss/ files 2019-02-14 09:54:37 -05:00
gss_rpc_upcall.h SUNRPC: Add SPDX IDs to some net/sunrpc/auth_gss/ files 2019-02-14 09:54:37 -05:00
gss_rpc_xdr.c SUNRPC: Add SPDX IDs to some net/sunrpc/auth_gss/ files 2019-02-14 09:54:37 -05:00
gss_rpc_xdr.h SUNRPC: Add SPDX IDs to some net/sunrpc/auth_gss/ files 2019-02-14 09:54:37 -05:00
Makefile SUNRPC: Introduce trace points in rpc_auth_gss.ko 2019-02-14 09:20:40 -05:00
svcauth_gss.c SUNRPC: Fix svcauth_gss_proxy_init() 2019-10-30 16:32:37 -04:00
trace.c SUNRPC: Introduce trace points in rpc_auth_gss.ko 2019-02-14 09:20:40 -05:00