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linux/net/sunrpc
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NeilBrown cf707a1856 sunrpc/cache: drop reference when sunrpc_cache_pipe_upcall() detects a race 
[ Upstream commit a6ab1e8126 ]

sunrpc_cache_pipe_upcall() can detect a race if CACHE_PENDING is no longer
set.  In this case it aborts the queuing of the upcall.
However it has already taken a new counted reference on "h" and
doesn't "put" it, even though it frees the data structure holding the reference.

So let's delay the "cache_get" until we know we need it.

Fixes: f9e1aedc6c ("sunrpc/cache: remove races with queuing an upcall.")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
History 2016-07-12 08:47:59 -04:00
..
auth_gss sunrpc: fix stripping of padded MIC tokens 2016-06-06 19:11:11 -04:00
xprtrdma svcrdma: Fix send_reply() scatter/gather set-up 2015-10-27 22:13:29 -04:00
addr.c replace strict_strto calls 2014-07-12 18:45:49 -04:00
auth.c SUNRPC: remove all refcounting of groupinfo from rpcauth_lookupcred 2014-08-04 09:22:08 -04:00
auth_generic.c sunrpc/auth: allow lockless (rcu) lookup of credential cache. 2014-08-03 17:14:12 -04:00
auth_null.c sunrpc/auth: allow lockless (rcu) lookup of credential cache. 2014-08-03 17:14:12 -04:00
auth_unix.c SUNRPC refactor rpcauth_checkverf error returns 2013-09-03 15:25:09 -04:00
backchannel_rqst.c SUNRPC: Fix a memory leak in the backchannel code 2015-07-03 23:02:23 -04:00
bc_svc.c SUNRPC: remove BUG_ON from bc_send 2012-11-04 14:43:41 -05:00
cache.c sunrpc/cache: drop reference when sunrpc_cache_pipe_upcall() detects a race 2016-07-12 08:47:59 -04:00
clnt.c nfsd4/rpc: move backchannel create logic into rpc code 2016-07-12 08:46:52 -04:00
Kconfig xprtrdma: add separate Kconfig options for NFSoRDMA client and server support 2014-03-28 18:02:12 -04:00
Makefile xprtrdma: add separate Kconfig options for NFSoRDMA client and server support 2014-03-28 18:02:12 -04:00
netns.h Merge branch 'for-3.14' of git://linux-nfs.org/~bfields/linux 2014-01-30 10:18:43 -08:00
rpc_pipe.c rpc_pipe: Drop memory allocation cast 2014-07-12 18:43:44 -04:00
rpcb_clnt.c SUNRPC: NULL utsname dereference on NFS umount during namespace cleanup 2015-03-06 14:52:58 -08:00
sched.c NFS/SUNRPC: Remove other deadlock-avoidance mechanisms in nfs_release_page() 2014-09-25 08:25:47 -04:00
socklib.c net: Save software checksum complete 2014-06-11 15:46:13 -07:00
stats.c SUNRPC: Deprecate rpc_client->cl_protname 2013-08-30 09:19:34 -04:00
sunrpc.h SUNRPC: track whether a request is coming from a loop-back interface. 2014-05-22 15:59:18 -04:00
sunrpc_syms.c sunrpc: create a new dummy pipe for gssd to hold open 2013-12-06 13:06:30 -05:00
svc.c SUNRPC: get rid of the request wait queue 2014-08-17 12:00:11 -04:00
svc_xprt.c SUNRPC: Fix compile on non-x86 2014-08-28 15:51:35 -04:00
svcauth.c nfsd4: better reservation of head space for krb5 2014-05-30 17:32:17 -04:00
svcauth_unix.c svcrpc: fix failures to handle -1 uid's 2013-07-08 17:27:23 -04:00
svcsock.c SUNRPC: Fix locking around callback channel reply receive 2014-11-19 12:03:20 -05:00
sysctl.c net: Convert uses of typedef ctl_table to struct ctl_table 2013-06-13 02:36:09 -07:00
timer.c net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
xdr.c rpc: fix xdr_truncate_encode to handle buffer ending on page boundary 2015-01-16 06:59:55 -08:00
xprt.c NFS client updates for Linux 3.17 2014-08-13 18:13:19 -06:00
xprtsock.c NFS/SUNRPC: Remove other deadlock-avoidance mechanisms in nfs_release_page() 2014-09-25 08:25:47 -04:00