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A truncated cb_compound request will cause the client to decode null or data from a previous callback for nfs4.1 backchannel case, or uninitialized data for the nfs4.0 case. This is because the path through svc_process_common() advances the request's iov_base and decrements iov_len without adjusting the overall xdr_buf's len field. That causes xdr_init_decode() to set up the xdr_stream with an incorrect length in nfs4_callback_compound(). Fixing this for the nfs4.1 backchannel case first requires setting the correct iov_len and page_len based on the length of received data in the same manner as the nfs4.0 case. Then the request's xdr_buf length can be adjusted for both cases based upon the remaining iov_len and page_len. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> |
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.. | ||
auth_gss | ||
xprtrdma | ||
addr.c | ||
auth_generic.c | ||
auth_null.c | ||
auth_unix.c | ||
auth.c | ||
backchannel_rqst.c | ||
cache.c | ||
clnt.c | ||
debugfs.c | ||
Kconfig | ||
Makefile | ||
netns.h | ||
rpc_pipe.c | ||
rpcb_clnt.c | ||
sched.c | ||
socklib.c | ||
stats.c | ||
sunrpc_syms.c | ||
sunrpc.h | ||
svc_xprt.c | ||
svc.c | ||
svcauth_unix.c | ||
svcauth.c | ||
svcsock.c | ||
sysctl.c | ||
timer.c | ||
xdr.c | ||
xprt.c | ||
xprtsock.c |