• Tom Hughes's avatar
    mac80211: clear subdir_stations when removing debugfs · 4479004e
    Tom Hughes authored
    If we don't do this, and we then fail to recreate the debugfs
    directory during a mode change, then we will fail later trying
    to add stations to this now bogus directory:
    
    BUG: unable to handle kernel NULL pointer dereference at 0000006c
    IP: [<c0a92202>] mutex_lock+0x12/0x30
    Call Trace:
    [<c0678ab4>] start_creating+0x44/0xc0
    [<c0679203>] debugfs_create_dir+0x13/0xf0
    [<f8a938ae>] ieee80211_sta_debugfs_add+0x6e/0x490 [mac80211]
    
    Cc: stable@kernel.org
    Signed-off-by: default avatarTom Hughes <tom@compton.nu>
    Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
    4479004e
debugfs_netdev.c 21.3 KB