Johannes Berg 0bbab5f030 cfg80211: fix debugfs rename crash ... Removing the "if (IS_ERR(dir)) dir = NULL;" check only works if we adjust the remaining code to not rely on it being NULL. Check IS_ERR_OR_NULL() before attempting to dereference it. I'm not actually entirely sure this fixes the syzbot crash as the kernel config indicates that they do have DEBUG_FS in the kernel, but this is what I found when looking there. Cc: stable@vger.kernel.org Fixes: d82574a8e5 ("cfg80211: no need to check return value of debugfs_create functions") Reported-by: syzbot+fd5332e429401bf42d18@syzkaller.appspotmail.com Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20200525113816.fc4da3ec3d4b.Ica63a110679819eaa9fb3bc1b7437d96b1fd187d@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>		2020-05-25 13:12:32 +02:00
..
certs
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
ap.c	cfg80211: call disconnect_wk when AP stops	2019-02-01 11:12:50 +01:00
chan.c	nl80211: Disallow setting of HT for channel 14	2019-10-30 10:07:22 +01:00
core.c	cfg80211: fix debugfs rename crash	2020-05-25 13:12:32 +02:00
core.h	cfg80211/mac80211: Allow user space to register for station Rx authentication	2020-02-07 12:54:09 +01:00
debugfs.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
debugfs.h
ethtool.c	cfg80211: check wiphy driver existence for drvinfo report	2020-02-07 12:53:26 +01:00
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	nl80211: Add SOCKET_OWNER support to JOIN_MESH	2018-03-29 10:38:24 +02:00
mlme.c	cfg80211/mac80211: Allow user space to register for station Rx authentication	2020-02-07 12:54:09 +01:00
nl80211.c	nl80211: fix NL80211_ATTR_FTM_RESPONDER policy	2020-04-14 12:28:48 +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	nl80211/cfg80211: add support for non EDCA based ranging measurement	2020-03-20 14:42:19 +01:00
radiotap.c
rdev-ops.h	nl80211: modify TID-config API	2020-02-24 12:01:10 +01:00
reg.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-02-27 18:31:39 -08:00
reg.h	net: Fix various misspellings of "connect"	2019-10-28 13:41:59 -07:00
scan.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2020-03-29 21:25:29 -07:00
sme.c	cfg80211: Support key configuration for Beacon protection (BIGTK)	2020-02-24 10:35:48 +01:00
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	nl80211: modify TID-config API	2020-02-24 12:01:10 +01:00
util.c	A new set of changes:	2020-02-24 15:41:54 -08:00
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	wireless: wext: avoid gcc -O3 warning	2020-01-15 09:52:20 +01:00
wext-priv.c
wext-proc.c	proc: introduce proc_create_net{,_data}	2018-05-16 07:24:30 +02:00
wext-sme.c	cfg80211: wext: avoid copying malformed SSIDs	2019-10-04 14:04:08 +02:00
wext-spy.c