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f99fa50880
linux/net/sunrpc
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Trond Myklebust f99fa50880 SUNRPC/xprtrdma: Fix reconnection locking 
The xprtrdma client code currently relies on the task that initiated the
connect to hold the XPRT_LOCK for the duration of the connection
attempt. If the task is woken early, due to some other event, then that
lock could get released early.
Avoid races by using the same mechanism that the socket code uses of
transferring lock ownership to the RDMA connect worker itself. That
frees us to call rpcrdma_xprt_disconnect() directly since we're now
guaranteed exclusion w.r.t. other callers.

Fixes: 4cf44be6f1 ("xprtrdma: Fix recursion into rpcrdma_xprt_disconnect()")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2021-08-09 16:57:05 -04:00
..
auth_gss SUNRPC: Convert rpc_client refcount to use refcount_t 2021-08-09 16:57:04 -04:00
xprtrdma SUNRPC/xprtrdma: Fix reconnection locking 2021-08-09 16:57:05 -04:00
addr.c net: sunrpc: interpret the return value of kstrtou32 correctly 2021-01-10 13:32:51 -05:00
auth_null.c SUNRPC: Add rpc_auth::au_ralign field 2019-02-14 11:48:36 -05:00
auth_unix.c SUNRPC: Use the client user namespace when encoding creds 2019-04-26 16:24:32 -04:00
auth.c sunrpc: add missing newline when printing parameter 'auth_hashtable_size' by sysfs 2020-06-11 13:33:48 -04:00
backchannel_rqst.c The one new feature this time, from Anna Schumaker, is READ_PLUS, which 2020-10-22 09:44:27 -07:00
cache.c sunrpc: clean-up cache downcall 2020-12-09 09:38:34 -05:00
clnt.c SUNRPC: Convert rpc_client refcount to use refcount_t 2021-08-09 16:57:04 -04:00
debugfs.c SUNRPC: Convert rpc_client refcount to use refcount_t 2021-08-09 16:57:04 -04:00
Kconfig SUNRPC: remove RC4-HMAC-MD5 support from KerberosV 2020-09-11 14:39:15 +10:00
Makefile sunrpc: Create a sunrpc directory under /sys/kernel/ 2021-07-08 14:03:23 -04:00
netns.h
rpc_pipe.c SUNRPC: Convert rpc_client refcount to use refcount_t 2021-08-09 16:57:04 -04:00
rpcb_clnt.c sunrpc: honor rpc_task's timeout value in rpcb_create() 2021-04-05 09:04:21 -04:00
sched.c SUNRPC: Should wake up the privileged task firstly. 2021-06-28 09:34:39 -04:00
socklib.c skb_copy_and_csum_bits(): don't bother with the last argument 2020-08-20 15:45:13 -04:00
socklib.h SUNRPC: Refactor xs_sendpages() 2020-03-16 12:04:33 -04:00
stats.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
sunrpc_syms.c sunrpc: add IDs to multipath 2021-07-08 14:03:23 -04:00
sunrpc.h Replace HTTP links with HTTPS ones: NFS, SUNRPC, and LOCKD clients 2020-09-21 10:21:10 -04:00
svc_xprt.c SUNRPC: refresh rq_pages using a bulk page allocator 2021-04-30 11:20:43 -07:00
svc.c SUNRPC: Fix null pointer dereference in svc_rqst_free() 2021-04-23 10:43:05 -04:00
svcauth_unix.c sunrpc: Remove unused function ip_map_lookup 2021-04-06 11:24:31 -04:00
svcauth.c sunrpc: check that domain table is empty at module unload. 2020-05-28 18:15:00 -04:00
svcsock.c SUNRPC: fix ternary sign expansion bug in tracing 2021-04-22 11:02:28 -04:00
sysctl.c net/sunrpc: fix useless comparison in proc_do_xprt() 2020-11-08 16:28:25 -05:00
sysfs.c sunrpc: remove an offlined xprt using sysfs 2021-07-08 14:03:24 -04:00
sysfs.h SUNRPC: take a xprt offline using sysfs 2021-07-08 14:03:24 -04:00
timer.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
xdr.c sunrpc: Avoid a KASAN slab-out-of-bounds bug in xdr_set_page_base() 2021-06-13 19:36:49 -04:00
xprt.c SUNRPC/xprtrdma: Fix reconnection locking 2021-08-09 16:57:05 -04:00
xprtmultipath.c NFS client updates for Linux 5.14 2021-07-09 09:43:57 -07:00
xprtsock.c Merge part 2 of branch 'sysfs-devel' 2021-07-08 14:03:26 -04:00