3.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Kinglong Mee <kinglong...@gmail.com>
commit d9499a95716db0d4bc9b67e88fd162133e7d6b08 upstream.
A memory allocation failure could cause nfsd_startup_generic to fail, in
which case nfsd_users wouldn't be incorrectly left elevated.
After nfsd restarts nfsd_startup_generic will then succeed without doing
anything--the first consequence is likely nfs4_start_net finding a bad
laundry_wq and crashing.
Signed-off-by: Kinglong Mee <kinglong...@gmail.com>
Fixes: 4539f14981ce "nfsd: replace boolean nfsd_up flag by users counter"
Signed-off-by: J. Bruce Fields <bfie...@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
fs/nfsd/nfssvc.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -221,7 +221,8 @@ static int nfsd_startup_generic(int nrse
*/
ret = nfsd_racache_init(2*nrservs);
if (ret)
- return ret;
+ goto dec_users;
+
ret = nfs4_state_start();
if (ret)
goto out_racache;
@@ -229,6 +230,8 @@ static int nfsd_startup_generic(int nrse
out_racache:
nfsd_racache_shutdown();
+dec_users:
+ nfsd_users--;
return ret;
}
--
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