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NFSv4.2: fix error handling in nfs42_proc_getxattr
[ Upstream commit 4e3733f ] There is a slight issue with error handling code inside nfs42_proc_getxattr(). If page allocating loop fails then we free the failing page array element which is NULL but __free_page() can't deal with NULL args. Found by Linux Verification Center (linuxtesting.org). Fixes: a1f2673 ("NFSv4.2: improve page handling for GETXATTR") Signed-off-by: Fedor Pchelkin <pchelkin@ispras.ru> Reviewed-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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