Miaoqing Pan b501426cf8 nl80211: fix null pointer dereference ... If the interface is not in MESH mode, the command 'iw wlanx mpath del' will cause kernel panic. The root cause is null pointer access in mpp_flush_by_proxy(), as the pointer 'sdata->u.mesh.mpp_paths' is NULL for non MESH interface. Unable to handle kernel NULL pointer dereference at virtual address 00000068 [...] PC is at _raw_spin_lock_bh+0x20/0x5c LR is at mesh_path_del+0x1c/0x17c [mac80211] [...] Process iw (pid: 4537, stack limit = 0xd83e0238) [...] [<c021211c>] (_raw_spin_lock_bh) from [<bf8c7648>] (mesh_path_del+0x1c/0x17c [mac80211]) [<bf8c7648>] (mesh_path_del [mac80211]) from [<bf6cdb7c>] (extack_doit+0x20/0x68 [compat]) [<bf6cdb7c>] (extack_doit [compat]) from [<c05c309c>] (genl_rcv_msg+0x274/0x30c) [<c05c309c>] (genl_rcv_msg) from [<c05c25d8>] (netlink_rcv_skb+0x58/0xac) [<c05c25d8>] (netlink_rcv_skb) from [<c05c2e14>] (genl_rcv+0x20/0x34) [<c05c2e14>] (genl_rcv) from [<c05c1f90>] (netlink_unicast+0x11c/0x204) [<c05c1f90>] (netlink_unicast) from [<c05c2420>] (netlink_sendmsg+0x30c/0x370) [<c05c2420>] (netlink_sendmsg) from [<c05886d0>] (sock_sendmsg+0x70/0x84) [<c05886d0>] (sock_sendmsg) from [<c0589f4c>] (___sys_sendmsg.part.3+0x188/0x228) [<c0589f4c>] (___sys_sendmsg.part.3) from [<c058add4>] (__sys_sendmsg+0x4c/0x70) [<c058add4>] (__sys_sendmsg) from [<c0208c80>] (ret_fast_syscall+0x0/0x44) Code: e2822c02 e2822001 e5832004 f590f000 (e1902f9f) ---[ end trace bbd717600f8f884d ]--- Signed-off-by: Miaoqing Pan <miaoqing@codeaurora.org> Link: https://lore.kernel.org/r/1569485810-761-1-git-send-email-miaoqing@codeaurora.org [trim useless data from commit message] Signed-off-by: Johannes Berg <johannes.berg@intel.com>		2019-10-01 17:56:19 +02:00
..
certs
.gitignore
ap.c
chan.c	nl80211: Add support for EDMG channels	2019-08-21 11:07:35 +02:00
core.c	cfg80211: always shut down on HW rfkill	2019-09-11 09:13:26 +02:00
core.h	cfg80211: always shut down on HW rfkill	2019-09-11 09:13:26 +02:00
debugfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
debugfs.h
ethtool.c
ibss.c	cfg80211: ibss: use 11a mandatory rates for 6GHz band operation	2019-08-21 10:54:57 +02:00
Kconfig	lib80211: use crypto API ccm(aes) transform for CCMP processing	2019-07-26 13:22:47 +02:00
lib80211_crypt_ccmp.c	lib80211: use crypto API ccm(aes) transform for CCMP processing	2019-07-26 13:22:47 +02:00
lib80211_crypt_tkip.c	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2019-07-08 20:57:08 -07:00
lib80211_crypt_wep.c	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2019-07-08 20:57:08 -07:00
lib80211.c	treewide: Add SPDX license identifier for more missed files	2019-05-21 10:50:45 +02:00
Makefile	wireless: Skip directory when generating certificates	2019-05-14 10:27:57 +02:00
mesh.c
mlme.c	cfg80211: Report Association Request frame IEs in association events	2019-02-22 13:35:09 +01:00
nl80211.c	nl80211: fix null pointer dereference	2019-10-01 17:56:19 +02:00
nl80211.h	cfg80211: Report Association Request frame IEs in association events	2019-02-22 13:35:09 +01:00
ocb.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
of.c
pmsr.c	cfg80211: report measurement start TSF correctly	2019-06-14 15:46:33 +02:00
radiotap.c
rdev-ops.h	cfg80211: add support to probe unexercised mesh link	2019-04-26 13:02:11 +02:00
reg.c	cfg80211: initialize on-stack chandefs	2019-10-01 17:56:18 +02:00
reg.h
scan.c	cfg80211: validate SSID/MBSSID element ordering assumption	2019-10-01 17:56:18 +02:00
sme.c	cfg80211: Handle bss expiry during connection	2019-05-28 09:35:39 +02:00
sysfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 432	2019-06-05 17:37:16 +02:00
sysfs.h
trace.c
trace.h	cfg80211: add 6GHz in code handling array with NUM_NL80211_BANDS entries	2019-08-21 10:54:12 +02:00
util.c	We have a number of changes, but things are settling down:	2019-09-11 14:57:17 +01:00
wext-compat.c	cfg80211: initialize on-stack chandefs	2019-10-01 17:56:18 +02:00
wext-compat.h	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
wext-core.c
wext-priv.c
wext-proc.c
wext-sme.c
wext-spy.c