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NFSD: Decrease nfsd_users in nfsd_startup_generic fail

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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 <kinglongmee@gmail.com>
Fixes: 4539f14981 "nfsd: replace boolean nfsd_up flag by users counter"
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Kinglong Mee 2014-07-30 21:26:05 +08:00 committed by J. Bruce Fields
parent 4ae098d327
commit d9499a9571
1 changed files with 4 additions and 1 deletions
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5
fs/nfsd/nfssvc.c
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@ -221,7 +221,8 @@ static int nfsd_startup_generic(int nrservs)
*/
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 nrservs)
out_racache:
nfsd_racache_shutdown();
dec_users:
nfsd_users--;
return ret;
}