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linux/net/sunrpc
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Xin Xiong bfc48f1b05 net/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change() 
The issue happens on some error handling paths. When the function
fails to grab the object `xprt`, it simply returns 0, forgetting to
decrease the reference count of another object `xps`, which is
increased by rpc_sysfs_xprt_kobj_get_xprt_switch(), causing refcount
leaks. Also, the function forgets to check whether `xps` is valid
before using it, which may result in NULL-dereferencing issues.

Fix it by adding proper error handling code when either `xprt` or
`xps` is NULL.

Fixes: 5b7eb78486 ("SUNRPC: take a xprt offline using sysfs")
Signed-off-by: Xin Xiong <xiongx18@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-08-12 11:21:28 +01:00
..
auth_gss SUNRPC: Fix an RPC/RDMA performance regression 2022-07-10 19:00:53 -04:00
xprtrdma SUNRPC: Fix an RPC/RDMA performance regression 2022-07-10 19:00:53 -04:00
addr.c nfsd: don't alloc under spinlock in rpc_parse_scope_id 2021-09-21 17:51:47 -04:00
auth_null.c SUNRPC: Add rpc_auth::au_ralign field 2019-02-14 11:48:36 -05:00
auth_unix.c SUNRPC: Fix unx_lookup_cred() allocation 2022-03-22 15:52:55 -04:00
auth.c NFS client updates for Linux 5.20 2022-08-10 14:04:32 -07:00
backchannel_rqst.c NFS client updates for Linux 5.20 2022-08-10 14:04:32 -07:00
cache.c SUNRPC: Cache deferral injection 2022-05-19 12:25:38 -04:00
clnt.c SUNRPC: Don't reuse bvec on retransmission of the request 2022-07-27 16:26:17 -04:00
debugfs.c SUNRPC: Cache deferral injection 2022-05-19 12:25:38 -04:00
fail.h SUNRPC: Cache deferral injection 2022-05-19 12:25:38 -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 fs: allocate inode by using alloc_inode_sb() 2022-03-22 15:57:03 -07:00
rpcb_clnt.c SUNRPC: Make the rpciod and xprtiod slab allocation modes consistent 2022-03-22 15:52:55 -04:00
sched.c SUNRPC: Fix an RPC/RDMA performance regression 2022-07-10 19:00:53 -04:00
socklib.c SUNRPC: Move the call to xprt_send_pagedata() out of xprt_sock_sendmsg() 2022-04-07 16:20:01 -04:00
socklib.h SUNRPC: Refactor xs_sendpages() 2020-03-16 12:04:33 -04:00
stats.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
sunrpc_syms.c sunrpc: add IDs to multipath 2021-07-08 14:03:23 -04:00
sunrpc.h treewide: Replace GPLv2 boilerplate/reference with SPDX - gpl-2.0_149.RULE 2022-06-10 14:51:35 +02:00
svc_xprt.c SUNRPC: Expand the svc_alloc_arg_err tracepoint 2022-07-29 20:08:56 -04:00
svc.c SUNRPC: Use RMW bitops in single-threaded hot paths 2022-05-23 11:06:29 -04:00
svcauth_unix.c SUNRPC: Teach server to recognize RPC_AUTH_TLS 2022-02-28 10:26:40 -05:00
svcauth.c SUNRPC: Teach server to recognize RPC_AUTH_TLS 2022-02-28 10:26:40 -05:00
svcsock.c NFSD 5.19 Release Notes 2022-05-26 20:52:24 -07:00
sysctl.c net/sunrpc: fix useless comparison in proc_do_xprt() 2020-11-08 16:28:25 -05:00
sysfs.c net/sunrpc: fix potential memory leaks in rpc_sysfs_xprt_state_change() 2022-08-12 11:21:28 +01:00
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: Remove xdr_align_data() and xdr_expand_hole() 2022-07-23 15:38:29 -04:00
xprt.c SUNRPC: Don't reuse bvec on retransmission of the request 2022-07-27 16:26:17 -04:00
xprtmultipath.c SUNRPC export xprt_iter_rewind function 2022-07-25 10:06:04 -04:00
xprtsock.c SUNRPC: Don't reuse bvec on retransmission of the request 2022-07-27 16:26:17 -04:00