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| author | Naofumi Honda <honda@math.sci.hokudai.ac.jp> | 2017-11-09 10:57:16 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-12-05 11:24:32 +0100 |
| commit | aa1a6cf1586bb0aa7c6585ebaffd7b5e3ae4f040 (patch) | |
| tree | 91e3902f4cf7b1f1b893ce838764a8db68cf4729 /fs/nfsd | |
| parent | 1c404259164405f9a61379285f6e1fcb57ea43aa (diff) | |
| download | linux-stable-aa1a6cf1586bb0aa7c6585ebaffd7b5e3ae4f040.tar.gz linux-stable-aa1a6cf1586bb0aa7c6585ebaffd7b5e3ae4f040.tar.bz2 linux-stable-aa1a6cf1586bb0aa7c6585ebaffd7b5e3ae4f040.zip | |
nfsd: fix panic in posix_unblock_lock called from nfs4_laundromat
commit 64ebe12494fd5d193f014ce38e1fd83cc57883c8 upstream.
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().
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/nfsd')
| -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 7161913cdaeb..9ebb2d7c8182 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -4732,7 +4732,7 @@ 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); @@ -7143,7 +7143,7 @@ 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); |