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linux/fs/nfsd
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J. Bruce Fields 03d44e3d9d nfsd: fix deadlock secinfo+readdir compound 
[ Upstream commit 2f6fc056e8 ]

nfsd_lookup_dentry exits with the parent filehandle locked.  fh_put also
unlocks if necessary (nfsd filehandle locking is probably too lenient),
so it gets unlocked eventually, but if the following op in the compound
needs to lock it again, we can deadlock.

A fuzzer ran into this; normal clients don't send a secinfo followed by
a readdir in the same compound.

Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
History 2016-04-18 08:51:00 -04:00
..
acl.h nfsd4: remove nfs4_acl_new 2014-07-08 17:14:27 -04:00
auth.c nfsd: silence sparse warning about accessing credentials 2014-07-17 16:15:35 -04:00
auth.h nfsd: Remove nfsd_luid, nfsd_lgid, nfsd_ruid and nfsd_rgid 2013-02-13 06:15:51 -08:00
blocklayout.c nfsd/blocklayout: accept any minlength 2015-10-27 09:51:54 +09:00
blocklayoutxdr.c NFSD: Printk blocklayout length and offset as format 0x%llx 2015-03-25 21:13:02 -04:00
blocklayoutxdr.h nfsd: pNFS block layout driver 2015-02-05 14:35:18 +01:00
cache.h nfsd: Remove the cache_hash list 2014-08-17 12:00:12 -04:00
current_stateid.h nfsd41: use current stateid by value 2012-02-15 11:20:45 -05:00
export.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
export.h nfsd: implement pNFS operations 2015-02-02 18:09:42 +01:00
fault_inject.c nfsd: remove old fault injection infrastructure 2014-08-05 10:55:10 -04:00
idmap.h nfsd4: use xdr_reserve_space in attribute encoding 2014-05-28 14:52:34 -04:00
Kconfig Merge branch 'for-4.1' of git://linux-nfs.org/~bfields/linux 2015-04-24 07:46:05 -07:00
lockd.c nfsd: Remove deprecated nfsctl system call and related code. 2011-07-15 18:58:42 -04:00
Makefile nfsd: pNFS block layout driver 2015-02-05 14:35:18 +01:00
netns.h nfsd: add some comments to the nfsd4 object definitions 2014-08-05 16:09:20 -04:00
nfs2acl.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3acl.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3xdr.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4acl.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
nfs4callback.c nfsd: skip CB_NULL probes for 4.1 or later 2015-05-04 12:02:42 -04:00
nfs4idmap.c NFSD: Full checking of authentication name 2014-09-03 17:43:03 -04:00
nfs4layouts.c nfsd: require an explicit option to enable pNFS 2015-03-30 16:05:26 -04:00
nfs4proc.c nfsd: fix deadlock secinfo+readdir compound 2016-04-18 08:51:00 -04:00
nfs4recover.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs4state.c nfsd: eliminate sending duplicate and repeated delegations 2015-12-14 21:24:36 -08:00
nfs4xdr.c nfsd4: fix bad bounds checking 2016-04-18 08:50:44 -04:00
nfscache.c NFSD: Error out when register_shrinker() fail 2015-03-20 12:44:00 -04:00
nfsctl.c nfsd: fix nsfd startup race triggering BUG_ON 2015-04-21 16:16:03 -04:00
nfsd.h nfsd: eliminate NFSD_DEBUG 2015-04-21 16:16:02 -04:00
nfsfh.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfsfh.h VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfsproc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfssvc.c nfsd: default NFSv4.2 to on 2015-02-09 14:58:50 -05:00
nfsxdr.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
pnfs.h nfsd4: fix v3-less build 2015-02-16 11:43:13 -05:00
state.h nfsd: serialize state seqid morphing operations 2015-12-14 21:24:36 -08:00
stats.c nfsd: move <linux/nfsd/stats.h> to fs/nfsd 2014-05-06 17:54:55 -04:00
stats.h nfsd: move <linux/nfsd/stats.h> to fs/nfsd 2014-05-06 17:54:55 -04:00
trace.c nfsd: add trace events 2015-02-02 18:09:44 +01:00
trace.h nfsd: add trace events 2015-02-02 18:09:44 +01:00
vfs.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
vfs.h Merge branch 'for-3.19' of git://linux-nfs.org/~bfields/linux 2014-12-16 15:25:31 -08:00
xdr.h nfsd: handle vfs_getattr errors in acl protocol 2013-02-26 02:46:09 -05:00
xdr3.h nfsd: fix encode_entryplus_baggage stack usage 2014-01-23 13:50:27 -05:00
xdr4.h nfsd: fix pNFS return on close semantics 2015-05-04 12:02:39 -04:00
xdr4cb.h nfsd: implement pNFS layout recalls 2015-02-02 18:09:43 +01:00