diff options
| author | Naofumi Honda <honda@math.sci.hokudai.ac.jp> | 2017-11-09 18:57:16 +0300 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2017-11-28 00:45:11 +0300 |
| commit | 64ebe12494fd5d193f014ce38e1fd83cc57883c8 (patch) | |
| tree | 5f527daa9b47ed2cfc921ae4be5b9569b8ab9cc3 | |
| parent | 3a2b19d1ee5633f76ae8a88da7bc039a5d1732aa (diff) | |
| download | linux-64ebe12494fd5d193f014ce38e1fd83cc57883c8.tar.xz | |
nfsd: fix panic in posix_unblock_lock called from nfs4_laundromat
From kernel 4.9, my two nfsv4 servers sometimes suffer from
"panic: unable to handle kernel page request"
in posix_unblock_lock() called from nfs4_laundromat().
These panics diseappear if we revert the commit "nfsd: add a LRU list
for blocked locks".
The cause appears to be a typo in nfs4_laundromat(), which is also
present in nfs4_state_shutdown_net().
Cc: stable@vger.kernel.org
Fixes: 7919d0a27f1e "nfsd: add a LRU list for blocked locks"
Cc: jlayton@redhat.com
Reveiwed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
| -rw-r--r-- | fs/nfsd/nfs4state.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 98342d262771..d0992d59f4e1 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4790,7 +4790,7 @@ nfs4_laundromat(struct nfsd_net *nn) spin_unlock(&nn->blocked_locks_lock); while (!list_empty(&reaplist)) { - nbl = list_first_entry(&nn->blocked_locks_lru, + nbl = list_first_entry(&reaplist, struct nfsd4_blocked_lock, nbl_lru); list_del_init(&nbl->nbl_lru); posix_unblock_lock(&nbl->nbl_lock); @@ -7236,7 +7236,7 @@ nfs4_state_shutdown_net(struct net *net) spin_unlock(&nn->blocked_locks_lock); while (!list_empty(&reaplist)) { - nbl = list_first_entry(&nn->blocked_locks_lru, + nbl = list_first_entry(&reaplist, struct nfsd4_blocked_lock, nbl_lru); list_del_init(&nbl->nbl_lru); posix_unblock_lock(&nbl->nbl_lock); |