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author | David Howells <dhowells@redhat.com> | 2009-07-02 14:35:32 +0100 |
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committer | J. Bruce Fields <bfields@citi.umich.edu> | 2009-07-03 10:21:10 -0400 |
commit | 033a666ccb842ab4134fcd0c861d5ba9f5d6bf3a (patch) | |
tree | 95da0764ea928ce4f821023e23a25001297c7bf3 /fs/qnx4 | |
parent | 28d0325ce6e0a52f53d8af687e6427fee59004d3 (diff) | |
download | linux-033a666ccb842ab4134fcd0c861d5ba9f5d6bf3a.tar.gz |
NFSD: Don't hold unrefcounted creds over call to nfsd_setuser()
nfsd_open() gets an unrefcounted pointer to the current process's effective credentials at the top of the function, then calls nfsd_setuser() via fh_verify() - which may replace and destroy the current process's effective credentials - and then passes the unrefcounted pointer to dentry_open() - but the credentials may have been destroyed by this point. Instead, the value from current_cred() should be passed directly to dentry_open() as one of its arguments, rather than being cached in a variable. Possibly fh_verify() should return the creds to use. This is a regression introduced by 745ca2475a6ac596e3d8d37c2759c0fbe2586227 "CRED: Pass credentials through dentry_open()". Signed-off-by: David Howells <dhowells@redhat.com> Tested-and-Verified-By: Steve Dickson <steved@redhat.com> Cc: stable@kernel.org Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Diffstat (limited to 'fs/qnx4')
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