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(parent: 94415b0) | patch
nfsd: avoid a NULL dereference in __cld_pipe_upcall()
authorScott Mayhew <smayhew@redhat.com>
Fri, 10 Jul 2020 20:33:07 +0000 (16:33 -0400)
committerChuck Lever <chuck.lever@oracle.com>
Mon, 13 Jul 2020 21:28:46 +0000 (17:28 -0400)
commitdf60446cd1fb487becd1f36f4c0da9e0e523c0cf
tree2d392c6211a92f122ed86f533bad8aa089ced951tree | snapshot
parent94415b06eb8aed13481646026dc995f04a3a534acommit | diff
nfsd: avoid a NULL dereference in __cld_pipe_upcall()

If the rpc_pipefs is unmounted, then the rpc_pipe->dentry becomes NULL
and dereferencing the dentry->d_sb will trigger an oops.  The only
reason we're doing that is to determine the nfsd_net, which could
instead be passed in by the caller.  So do that instead.

Fixes: 11a60d159259 ("nfsd: add a "GetVersion" upcall for nfsdcld")
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
fs/nfsd/nfs4recover.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git