Rick Macklem 2ba476324b Both a crash reported on freebsd-current on Oct. 18 under the ... subject heading "mtx_lock() of destroyed mutex on NFS" and PR# 156168 appear to be caused by clnt_dg_destroy() closing down the socket prematurely. When to close down the socket is controlled by a reference count (cs_refs), but clnt_dg_create() checks for sb_upcall being non-NULL to decide if a new socket is needed. I believe the crashes were caused by the following race: clnt_dg_destroy() finds cs_refs == 0 and decides to delete socket clnt_dg_destroy() then loses race with clnt_dg_create() for acquisition of the SOCKBUF_LOCK() clnt_dg_create() finds sb_upcall != NULL and increments cs_refs to 1 clnt_dg_destroy() then acquires SOCKBUF_LOCK(), sets sb_upcall to NULL and destroys socket This patch fixes the above race by changing clnt_dg_destroy() so that it acquires SOCKBUF_LOCK() before testing cs_refs. Tested by: bz PR: 156168 Reviewed by: dfr MFC after: 2 weeks		2011-11-03 14:38:03 +00:00
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rpcsec_gss	Remove an extraneous "already" from a comment introduced by r226081.	2011-10-07 13:16:21 +00:00
auth.h	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
auth_none.c	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
auth_unix.c	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
authunix_prot.c	Replace the static NGROUPS=NGROUPS_MAX+1=1024 with a dynamic	2010-01-12 07:49:34 +00:00
clnt.h	This patch is believed to fix a problem in the kernel rpc for	2011-04-27 18:19:26 +00:00
clnt_dg.c	Both a crash reported on freebsd-current on Oct. 18 under the	2011-11-03 14:38:03 +00:00
clnt_rc.c	This patch is believed to fix a problem in the kernel rpc for	2011-04-27 18:19:26 +00:00
clnt_stat.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
clnt_vc.c	This patch is believed to fix a problem in the kernel rpc for	2011-04-27 18:19:26 +00:00
getnetconfig.c	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
netconfig.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
nettype.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
pmap_prot.h	Rename RPC's 'struct pmap' to 'struct portmap' to avoid confusing it with	2008-08-25 09:36:17 +00:00
replay.c	- Check the result of malloc(M_NOWAIT) in replay_alloc(). The caller	2010-08-26 23:33:04 +00:00
replay.h	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
rpc.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
rpc_callmsg.c	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
rpc_com.h	Make the RPC specific __rpc_inet_ntop() and __rpc_inet_pton() general	2010-09-24 15:01:45 +00:00
rpc_generic.c	Fix the kgssapi so that it can be loaded as a module. Currently	2011-06-19 22:08:55 +00:00
rpc_msg.h	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
rpc_prot.c	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
rpcb_clnt.c	This patch is believed to fix a problem in the kernel rpc for	2011-04-27 18:19:26 +00:00
rpcb_clnt.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
rpcb_prot.c	Rename RPC's 'struct pmap' to 'struct portmap' to avoid confusing it with	2008-08-25 09:36:17 +00:00
rpcb_prot.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
rpcm_subs.h	/* -> /*- for license, minor formatting changes	2005-01-07 02:29:27 +00:00
rpcsec_gss.h	Fix the kgssapi so that it can be loaded as a module. Currently	2011-06-19 22:08:55 +00:00
svc.c	sysctl(9) cleanup checkpoint: amd64 GENERIC builds cleanly.	2011-01-12 19:54:19 +00:00
svc.h	Fix two races in the server side krpc w.r.t upcalls:	2009-06-04 14:13:06 +00:00
svc_auth.c	Rework the credential code to support larger values of NGROUPS and	2009-06-19 17:10:35 +00:00
svc_auth.h	Implement support for RPCSEC_GSS authentication to both the NFS client	2008-11-03 10:38:00 +00:00
svc_auth_unix.c	Rework the credential code to support larger values of NGROUPS and	2009-06-19 17:10:35 +00:00
svc_dg.c	Mfp4 CH=177274,177280,177284-177285,177297,177324-177325	2011-02-16 21:29:13 +00:00
svc_generic.c	Mfp4 CH=177274,177280,177284-177285,177297,177324-177325	2011-02-16 21:29:13 +00:00
svc_vc.c	Mfp4 CH=177274,177280,177284-177285,177297,177324-177325	2011-02-16 21:29:13 +00:00
types.h	Add the new kernel-mode NFS Lock Manager. To use it instead of the	2008-03-26 15:23:12 +00:00
xdr.h	fix xdrmem_control to be safe in an if statement	2009-05-30 22:23:58 +00:00