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Trond Myklebust f0380f3d16 RPC: Fix two potential races in put_rpccred 
It is possible for rpcauth_destroy_credcache() to cause the rpc credentials
to be unhashed while put_rpccred is waiting for the rpc_credcache_lock on
another cpu. Should this happen, then we can end up calling
hlist_del_rcu(&cred->cr_hash) a second time in put_rpccred, thus causing
list corruption.

Should the credential actually be hashed, it is also possible for
rpcauth_lookup_credcache to find and reference it before we get round to
unhashing it. In this case, the call to rpcauth_unhash_cred will fail, and
so we should just exit without destroying the cred.

Reported-by: Neil Brown <neilb@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
 		2009-12-03 08:10:17 -05:00
..
auth_gss sunrpc: reply AUTH_BADCRED to RPCSEC_GSS with unknown service 2009-08-25 17:39:43 -04:00
xprtrdma headers: remove sched.h from interrupt.h 2009-10-11 11:20:58 -07:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-04-03 15:24:35 -07:00
Makefile SUNRPC: Provide functions for managing universal addresses 2009-08-09 15:09:34 -04:00
addr.c SUNRPC: Address buffer overrun in rpc_uaddr2sockaddr() 2009-11-14 08:17:04 +09:00
auth.c RPC: Fix two potential races in put_rpccred 2009-12-03 08:10:17 -05:00
auth_generic.c SUNRPC: Defer the auth_gss upcall when the RPC call is asynchronous 2009-09-15 20:49:33 -04:00
auth_null.c headers: utsname.h redux 2009-09-23 18:13:10 -07:00
auth_unix.c SUNRPC: Use GFP_NOFS when allocating credentials 2008-07-09 12:08:48 -04:00
backchannel_rqst.c nfs41: sunrpc: xprt_alloc_bc_request() should not use spin_lock_bh() 2009-06-20 14:55:39 -04:00
bc_svc.c nfs41: Backchannel callback service helper routines 2009-06-17 14:11:28 -07:00
cache.c sunrpc/cache: avoid variable over-loading in cache_defer_req 2009-09-18 17:01:12 -04:00
clnt.c net: fix htmldocs sunrpc, clnt.c 2009-09-24 15:39:14 -07:00
rpc_pipe.c sunrpc/rpc_pipe: fix kernel-doc notation 2009-09-23 14:36:38 -04:00
rpcb_clnt.c SUNRPC: Eliminate PROC macro from rpcb_clnt 2009-08-09 15:09:44 -04:00
sched.c nfsd41: sunrpc: move struct rpc_buffer def into sunrpc.h 2009-09-10 12:09:06 -04:00
socklib.c SUNRPC: temp var should match return type of xdr_skb_read_actor 2008-01-30 02:05:43 -05:00
stats.c nfs41: Rename rq_received to rq_reply_bytes_recvd 2009-06-17 14:11:40 -07:00
sunrpc.h nfsd41: sunrpc: Added rpc server-side backchannel handling 2009-09-11 15:04:16 -04:00
sunrpc_syms.c SUNRPC: Ensure that sunrpc gets initialised before nfs, lockd, etc... 2009-08-21 08:17:56 -04:00
svc.c Merge commit 'linux-pnfs/nfs41-for-2.6.31' into nfsv41-for-2.6.31 2009-06-17 17:59:58 -07:00
svc_xprt.c nfsd41: sunrpc: Added rpc server-side backchannel handling 2009-09-11 15:04:16 -04:00
svcauth.c SUNRPC: The sunrpc server code should not be used by out-of-tree modules 2009-01-07 17:18:42 -05:00
svcauth_unix.c Merge branch 'nfs-for-2.6.32' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 into for-2.6.32-incoming 2009-08-21 11:27:29 -04:00
svcsock.c net: fix sk_forward_alloc corruption 2009-10-30 12:25:12 -07:00
sysctl.c sysctl: remove "struct file *" argument of ->proc_handler 2009-09-24 07:21:04 -07:00
timer.c SUNRPC: Add documenting comments in net/sunrpc/timer.c 2009-08-09 15:09:47 -04:00
xdr.c sunrpc: ntoh -> be*_to_cpu 2009-08-14 13:12:52 -04:00
xprt.c SUNRPC: Ensure that we honour autoclose before attempting to reconnect 2009-12-03 08:10:17 -05:00
xprtsock.c NFS/RPC: fix problems with reestablish_timeout and related code. 2009-09-23 14:36:37 -04:00