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authorJ. Bruce Fields <bfields@redhat.com>2015-01-20 11:51:26 -0500
committerJ. Bruce Fields <bfields@redhat.com>2015-01-23 10:29:11 -0500
commitbbc7f33ac6ff6f48709ce892aa906ddb68b34517 (patch)
tree6b1a31a7692b5f5010a06479ef74dd713a6eac0f /fs/nfsd/nfs4state.c
parenta97c331f9aa9080706a7835225d9d82e832e0bb6 (diff)
nfsd: fix year-2038 nfs4 state problem
Someone with a weird time_t happened to notice this, it shouldn't really manifest till 2038. It may not be our ownly year-2038 problem. Reported-by: Aaron Pace <Aaron.Pace@alcatel-lucent.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd/nfs4state.c')
-rw-r--r--fs/nfsd/nfs4state.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index f924f0618cb5..1f4b85b15125 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1508,7 +1508,12 @@ unhash_session(struct nfsd4_session *ses)
static int
STALE_CLIENTID(clientid_t *clid, struct nfsd_net *nn)
{
- if (clid->cl_boot == nn->boot_time)
+ /*
+ * We're assuming the clid was not given out from a boot
+ * precisely 2^32 (about 136 years) before this one. That seems
+ * a safe assumption:
+ */
+ if (clid->cl_boot == (u32)nn->boot_time)
return 0;
dprintk("NFSD stale clientid (%08x/%08x) boot_time %08lx\n",
clid->cl_boot, clid->cl_id, nn->boot_time);