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6bab93f87e
linux/net/sunrpc
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J. Bruce Fields 6bab93f87e svcrpc: take lock on turning entry NEGATIVE in cache_check 
We attempt to turn a cache entry negative in place.  But that entry may
already have been filled in by some other task since we last checked
whether it was valid, so we could be modifying an already-valid entry.
If nothing else there's a likely leak in such a case when the entry is
eventually put() and contents are not freed because it has
CACHE_NEGATIVE set.

So, take the cache_lock just as sunrpc_cache_update() does.

Reviewed-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2011-01-04 16:49:24 -05:00
..
auth_gss net/sunrpc/auth_gss/gss_krb5_crypto.c: Use normal negative error value return 2010-12-17 15:48:22 -05:00
xprtrdma sunrpc/xprtrdma: clean up workqueue usage 2010-10-21 10:11:45 -04:00
addr.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
auth_generic.c sunrpc: fix up rpcauth_remove_module section mismatch 2010-09-29 12:27:37 -04:00
auth_null.c SUNRPC: Move the bound cred to struct rpc_rqst 2010-08-04 08:54:09 -04:00
auth_unix.c SUNRPC: Move the bound cred to struct rpc_rqst 2010-08-04 08:54:09 -04:00
auth.c Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux 2010-10-26 09:55:25 -07:00
backchannel_rqst.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
bc_svc.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-04-11 14:53:53 -07:00
cache.c svcrpc: take lock on turning entry NEGATIVE in cache_check 2011-01-04 16:49:24 -05:00
clnt.c SUNRPC: Fix an infinite loop in call_refresh/call_refreshresult 2010-11-22 13:22:39 -05:00
Kconfig nfsd4: remove spkm3 2010-10-01 18:09:55 -04:00
Makefile SUNRPC: Provide functions for managing universal addresses 2009-08-09 15:09:34 -04:00
netns.h sunrpc: Make the ip_map_cache be per-net 2010-09-27 10:16:12 -04:00
rpc_pipe.c convert get_sb_single() users 2010-10-29 04:16:28 -04:00
rpcb_clnt.c Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux 2010-10-26 09:55:25 -07:00
sched.c Merge branch 'nfs-for-2.6.37' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2010-10-25 13:48:29 -07:00
socklib.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
stats.c SUNRPC: Simplify rpc_alloc_iostats by removing pointless local variable 2010-11-16 11:58:51 -05:00
sunrpc_syms.c sunrpc: Make the ip_map_cache be per-net 2010-09-27 10:16:12 -04:00
sunrpc.h nfsd41: sunrpc: Added rpc server-side backchannel handling 2009-09-11 15:04:16 -04:00
svc_xprt.c svcrpc: simpler request dropping 2011-01-04 16:49:22 -05:00
svc.c svcrpc: simpler request dropping 2011-01-04 16:49:22 -05:00
svcauth_unix.c SUNRPC: Remove more code when NFSD_DEPRECATED is not configured 2011-01-04 16:48:02 -05:00
svcauth.c net: sunrpc: kill unused macros 2010-12-17 15:48:21 -05:00
svcsock.c sunrpc: svc_sock_names should hold ref to socket being closed. 2010-12-17 15:48:19 -05:00
sysctl.c sysctl: Drop & in front of every proc_handler. 2009-11-18 08:37:40 -08:00
timer.c SUNRPC: Add documenting comments in net/sunrpc/timer.c 2009-08-09 15:09:47 -04:00
xdr.c SUNRPC: Add a helper function xdr_inline_peek 2010-10-23 15:27:32 -04:00
xprt.c sunrpc: Turn list_for_each-s into the ..._entry-s 2010-10-19 10:48:16 -04:00
xprtsock.c Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux 2010-10-26 09:55:25 -07:00