android_kernel_oneplus_msm8998/fs/nfsd
J. Bruce Fields 56fb92d684 nfsd: fix deadlock secinfo+readdir compound
commit 2f6fc056e899bd0144a08da5cacaecbe8997cd74 upstream.

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.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-04-12 09:09:03 -07:00
..
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 2015-10-09 16:11:40 -04:00
blocklayoutxdr.c pnfs: move common blocklayout XDR defintions to nfs4.h 2015-08-17 13:22:49 -05:00
blocklayoutxdr.h pnfs: move common blocklayout XDR defintions to nfs4.h 2015-08-17 13:22:49 -05:00
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 sunrpc/nfsd: Remove redundant code by exports seq_operations functions 2015-08-13 08:59:02 -04:00
export.h nfsd: include linux/nfs4.h in export.h 2015-08-13 10:21:21 -04:00
fault_inject.c nfsd: remove old fault injection infrastructure 2014-08-05 10:55:10 -04:00
idmap.h nfsd: Remove duplicate define of IDMAP_NAMESZ/IDMAP_TYPE_xx 2015-07-20 14:58:46 -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: New counter for generating client confirm verifier 2015-08-10 16:05:47 -04:00
nfs2acl.c nfsd: Add macro NFS_ACL_MASK for ACL 2015-07-20 14:58:46 -04:00
nfs3acl.c nfsd: Add macro NFS_ACL_MASK for ACL 2015-07-20 14:58:46 -04:00
nfs3proc.c VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
nfs3xdr.c nfsd: switch unsigned char flags in svc_fh to bools 2015-10-12 17:31:04 -04:00
nfs4acl.c nfsd: Fix two typos in comments 2015-08-13 10:26:24 -04:00
nfs4callback.c nfsd: New helper nfsd4_cb_sequence_done() for processing more cb errors 2015-08-13 08:57:06 -04:00
nfs4idmap.c nfsd: Remove duplicate define of IDMAP_NAMESZ/IDMAP_TYPE_xx 2015-07-20 14:58:46 -04:00
nfs4layouts.c nfsd: don't hold ls_mutex across a layout recall 2015-12-16 11:49:58 -05:00
nfs4proc.c nfsd: fix deadlock secinfo+readdir compound 2016-04-12 09:09:03 -07:00
nfs4recover.c nfsd: don't WARN/backtrace for invalid container deployment. 2015-08-31 16:32:08 -04:00
nfs4state.c nfsd: fix race with open / open upgrade stateids 2015-11-10 09:29:45 -05:00
nfs4xdr.c nfsd4: fix bad bounds checking 2016-04-12 09:09:03 -07:00
nfscache.c nfsd: remove recurring workqueue job to clean DRC 2015-11-10 09:25:51 -05:00
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 nfsd: switch unsigned char flags in svc_fh to bools 2015-10-12 17:31:04 -04:00
nfsfh.h nfsd: switch unsigned char flags in svc_fh to bools 2015-10-12 17:31:04 -04:00
nfsproc.c nfsd: Disable NFSv2 timestamp workaround for NFSv3+ 2015-05-29 11:04:01 -04:00
nfssvc.c nfsd/sunrpc: abstract out svc_set_num_threads to sv_ops 2015-08-10 16:05:43 -04:00
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: ensure that seqid morphing operations are atomic wrt to copies 2015-10-23 15:57:33 -04:00
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: move include of state.h from trace.c to trace.h 2015-10-23 15:57:29 -04:00
trace.h nfsd: move include of state.h from trace.c to trace.h 2015-10-23 15:57:29 -04:00
vfs.c nfsd: switch unsigned char flags in svc_fh to bools 2015-10-12 17:31:04 -04:00
vfs.h nfsd: switch unsigned char flags in svc_fh to bools 2015-10-12 17:31:04 -04:00
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: switch unsigned char flags in svc_fh to bools 2015-10-12 17:31:04 -04:00
xdr4cb.h nfsd: implement pNFS layout recalls 2015-02-02 18:09:43 +01:00