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cbdeaee94a
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Zhang Xiaoxu cbdeaee94a SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed 
There is a null-ptr-deref when xps sysfs alloc failed:
  BUG: KASAN: null-ptr-deref in sysfs_do_create_link_sd+0x40/0xd0
  Read of size 8 at addr 0000000000000030 by task gssproxy/457

  CPU: 5 PID: 457 Comm: gssproxy Not tainted 6.0.0-09040-g02357b27ee03 #9
  Call Trace:
   <TASK>
   dump_stack_lvl+0x34/0x44
   kasan_report+0xa3/0x120
   sysfs_do_create_link_sd+0x40/0xd0
   rpc_sysfs_client_setup+0x161/0x1b0
   rpc_new_client+0x3fc/0x6e0
   rpc_create_xprt+0x71/0x220
   rpc_create+0x1d4/0x350
   gssp_rpc_create+0xc3/0x160
   set_gssp_clnt+0xbc/0x140
   write_gssp+0x116/0x1a0
   proc_reg_write+0xd6/0x130
   vfs_write+0x177/0x690
   ksys_write+0xb9/0x150
   do_syscall_64+0x35/0x80
   entry_SYSCALL_64_after_hwframe+0x46/0xb0

When the xprt_switch sysfs alloc failed, should not add xprt and
switch sysfs to it, otherwise, maybe null-ptr-deref; also initialize
the 'xps_sysfs' to NULL to avoid oops when destroy it.

Fixes: 2a338a5431 ("sunrpc: add a symlink from rpc-client directory to the xprt_switch")
Fixes: d408ebe04a ("sunrpc: add add sysfs directory per xprt under each xprt_switch")
Fixes: baea99445d ("sunrpc: add xprt_switch direcotry to sunrpc's sysfs")
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2022-10-27 15:52:10 -04:00
..
6lowpan
9p net/9p: clarify trans_fd parse_opt failure handling 2022-10-07 21:23:09 +09:00
802 treewide: use prandom_u32_max() when possible, part 1 2022-10-11 17:42:55 -06:00
8021q net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
appletalk
atm net/atm: fix proc_mpc_write incorrect return value 2022-10-15 11:08:36 +01:00
ax25 ax25: move from strlcpy with unused retval to strscpy 2022-08-22 17:55:50 -07:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-22 13:02:10 -07:00
bluetooth Driver core changes for 6.1-rc1 2022-10-07 17:04:10 -07:00
bpf selftests/bpf: Add tests for kfunc returning a memory pointer 2022-09-07 11:05:17 -07:00
bpfilter
bridge net: bridge: assign path_cost for 2.5G and 5G link speed 2022-09-30 12:35:29 +01:00
caif caif: move from strlcpy with unused retval to strscpy 2022-08-22 17:57:35 -07:00
can can: bcm: check the result of can_send() in bcm_can_tx() 2022-09-23 13:53:10 +02:00
ceph Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
core Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
dcb
dccp treewide: use get_random_{u8,u16}() when possible, part 1 2022-10-11 17:42:58 -06:00
dns_resolver
dsa net: dsa: uninitialized variable in dsa_slave_netdevice_event() 2022-10-15 11:15:27 +01:00
ethernet net: gro: skb_gro_header helper function 2022-08-25 10:33:21 +02:00
ethtool ethtool: add interface to interact with Ethernet Power Equipment 2022-10-03 17:33:57 -07:00
hsr net: hsr: avoid possible NULL deref in skb_clone() 2022-10-18 19:18:27 -07:00
ieee802154 net/ieee802154: don't warn zero-sized raw_sendmsg() 2022-10-05 12:37:10 +02:00
ife
ipv4 io_uring-6.1-2022-10-22 2022-10-23 09:55:50 -07:00
ipv6 Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
iucv
kcm kcm: avoid potential race in kcm_tx_work 2022-10-13 09:33:44 -07:00
key Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2022-08-24 12:51:50 +01:00
l2tp genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
l3mdev
lapb
llc
mac80211 Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
mac802154 net: mac802154: Fix a condition in the receive path 2022-08-29 11:10:22 +02:00
mctp mctp: prevent double key removal and unref 2022-10-12 13:30:50 +01:00
mpls net: Use u64_stats_fetch_begin_irq() for stats fetch. 2022-08-29 13:02:27 +01:00
mptcp mptcp: update misleading comments. 2022-10-03 11:18:53 +01:00
ncsi genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netfilter Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
netlabel genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
netlink genetlink: reject use of nlmsg_flags for new commands 2022-09-30 17:43:09 -07:00
netrom
nfc NFC: hci: Split memcpy() of struct hcp_message flexible array 2022-09-27 07:45:18 -07:00
nsh
openvswitch Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
packet treewide: use prandom_u32_max() when possible, part 1 2022-10-11 17:42:55 -06:00
phonet
psample genetlink: start to validate reserved header bytes 2022-08-29 12:47:15 +01:00
qrtr net: qrtr: start MHI channel after endpoit creation 2022-08-15 11:21:42 +01:00
rds treewide: use get_random_{u8,u16}() when possible, part 2 2022-10-11 17:42:58 -06:00
rfkill
rose rose: check NULL rose_loopback_neigh->loopback 2022-08-22 14:24:54 +01:00
rxrpc rxrpc: remove rxrpc_max_call_lifetime declaration 2022-09-19 17:58:47 -07:00
sched Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
sctp treewide: use get_random_{u8,u16}() when possible, part 1 2022-10-11 17:42:58 -06:00
smc net/smc: Fix an error code in smc_lgr_create() 2022-10-15 11:12:12 +01:00
strparser strparser: pad sk_skb_cb to avoid straddling cachelines 2022-07-08 18:38:44 -07:00
sunrpc SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed 2022-10-27 15:52:10 -04:00
switchdev
tipc Networking fixes for 6.1-rc2, including fixes from netfilter 2022-10-20 17:24:59 -07:00
tls tls: strp: make sure the TCP skbs do not have overlapping data 2022-10-14 08:25:26 +01:00
unix Random number generator fixes for Linux 6.1-rc1. 2022-10-16 15:27:07 -07:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-10-03 17:44:18 -07:00
wireless Merge branch 'cve-fixes-2022-10-13' 2022-10-13 11:59:56 +02:00
x25 net/x25: fix call timeouts in blocking connects 2022-08-08 20:48:51 -07:00
xdp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-10-03 17:44:18 -07:00
xfrm treewide: use prandom_u32_max() when possible, part 1 2022-10-11 17:42:55 -06:00
compat.c net: clear msg_get_inq in __get_compat_msghdr() 2022-09-20 08:23:20 -07:00
devres.c
Kconfig Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile Remove DECnet support from kernel 2022-08-22 14:26:30 +01:00
socket.c d_path pile 2022-10-06 16:55:41 -07:00
sysctl_net.c