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| author |   Johannes Berg <johannes@sipsolutions.net> | 2009-11-01 19:25:40 +0100 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2009-11-02 15:14:07 -0500 |
| commit | c1f9a764cf47686b1f5a0cf87ada68d90056136a (patch) | |
| tree | 77bff7f1361deb11e1b3c60470d9d5784c00a771 /drivers | |
| parent | cfg80211: fix NULL ptr deref (diff) | |
| download | linux-dev-c1f9a764cf47686b1f5a0cf87ada68d90056136a.tar.xz linux-dev-c1f9a764cf47686b1f5a0cf87ada68d90056136a.zip | |
mac80211: check interface is down before type change
For some strange reason the netif_running() check
ended up after the actual type change instead of
before, potentially causing all kinds of problems
if the interface is up while changing the type;
one of the problems manifests itself as a warning:
WARNING: at net/mac80211/iface.c:651 ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]()
Hardware name: Aspire one
Pid: 2596, comm: wpa_supplicant Tainted: G W 2.6.31-10-generic #32-Ubuntu
Call Trace:
[] warn_slowpath_common+0x6d/0xa0
[] warn_slowpath_null+0x15/0x20
[] ieee80211_teardown_sdata+0xda/0x1a0 [mac80211]
[] ieee80211_if_change_type+0x4a/0xc0 [mac80211]
[] ieee80211_change_iface+0x61/0xa0 [mac80211]
[] cfg80211_wext_siwmode+0xc7/0x120 [cfg80211]
[] ioctl_standard_call+0x58/0xf0
(http://www.kerneloops.org/searchweek.php?search=ieee80211_teardown_sdata)
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions