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f9f475292d
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Johannes Berg f9f475292d cfg80211: always check for scan end on P2P device 
If a P2P device wdev is removed while it has a scan, then the
scan completion might crash later as it is already freed by
that time. To avoid the crash always check the scan completion
when the P2P device is being removed for some reason. If the
driver already canceled it, don't want and free it, otherwise
warn and leak it to avoid later crashes.

In order to do this, locking needs to be changed away from the
rdev mutex (which can't always be guaranteed). For now, use
the sched_scan_mtx instead, I'll rename it to just scan_mtx in
a later patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-03-24 11:15:58 +01:00
..
.gitignore
ap.c cfg80211: move some AP code to right file 2013-01-03 13:01:40 +01:00
chan.c cfg80211: allow drivers to selectively disable 80/160 MHz 2013-02-15 09:41:38 +01:00
core.c cfg80211: always check for scan end on P2P device 2013-03-24 11:15:58 +01:00
core.h cfg80211: always check for scan end on P2P device 2013-03-24 11:15:58 +01:00
db.txt
debugfs.c simple_open: automatically convert to simple_open() 2012-04-05 15:25:50 -07:00
debugfs.h
ethtool.c cfg80211: add wrappers for registered_device_ops 2012-10-18 10:53:37 +02:00
ethtool.h
genregdb.awk cfg80211: relicense reg.c reg.h and genregdb.awk to ISC 2012-01-04 14:30:41 -05:00
ibss.c cfg80211: pass wiphy to cfg80211_ref_bss/put_bss 2013-02-11 18:44:52 +01:00
Kconfig lib80211: hide Kconfig symbol 2012-11-16 14:29:09 -05:00
lib80211_crypt_ccmp.c net: Convert net_ratelimit uses to net_<level>_ratelimited 2012-05-15 13:45:03 -04:00
lib80211_crypt_tkip.c net: Convert net_ratelimit uses to net_<level>_ratelimited 2012-05-15 13:45:03 -04:00
lib80211_crypt_wep.c wireless: Remove unnecessary OOM logging messages 2011-09-13 15:45:02 -04:00
lib80211.c lib80211: remove exports for functions not called by other modules 2011-08-09 15:42:36 -04:00
Makefile cfg80211: add tracing to rdev-ops 2012-10-18 10:53:37 +02:00
mesh.c {cfg,nl}80211: mesh power mode primitives and userspace access 2013-01-16 22:48:04 +01:00
mlme.c nl80211/cfg80211: add radar detection command/event 2013-02-15 09:40:18 +01:00
nl80211.c cfg80211: always check for scan end on P2P device 2013-03-24 11:15:58 +01:00
nl80211.h nl80211/cfg80211: add radar detection command/event 2013-02-15 09:40:18 +01:00
radiotap.c wireless: add radiotap A-MPDU status field 2012-08-20 13:53:09 +02:00
rdev-ops.h cfg80211/nl80211: add API for MAC address ACLs 2013-01-25 18:36:44 +01:00
reg.c cfg80211: allow drivers to selectively disable 80/160 MHz 2013-02-15 09:41:38 +01:00
reg.h regulatory: use RCU to protect global and wiphy regdomains 2013-01-03 13:01:29 +01:00
regdb.h cfg80211: relicense reg.c reg.h and genregdb.awk to ISC 2012-01-04 14:30:41 -05:00
scan.c cfg80211: always check for scan end on P2P device 2013-03-24 11:15:58 +01:00
sme.c cfg80211: always check for scan end on P2P device 2013-03-24 11:15:58 +01:00
sysfs.c cfg80211: move locking into cfg80211_bss_age 2013-02-04 18:57:43 +01:00
sysfs.h
trace.c cfg80211: add tracing to rdev-ops 2012-10-18 10:53:37 +02:00
trace.h cfg80211: fix wdev tracing crash 2013-03-20 22:21:31 +01:00
util.c cfg80211: fix radar check for P2P_DEVICE 2013-02-11 18:44:45 +01:00
wext-compat.c wext: explicitly cast -110 to u8 2012-12-07 11:58:26 +01:00
wext-compat.h cfg80211: remove unused wext handler exports 2011-08-08 14:26:29 -04:00
wext-core.c wext: include wireless event id when it has a size problem 2012-09-05 16:12:44 +02:00
wext-priv.c wext: fix potential private ioctl memory content leak 2010-09-20 13:41:40 -04:00
wext-proc.c
wext-sme.c cfg80211: always check for scan end on P2P device 2013-03-24 11:15:58 +01:00
wext-spy.c wireless: Convert compare_ether_addr to ether_addr_equal 2012-05-09 20:49:19 -04:00