Issam Hamdi <ih@xxxxxxxxxxxxxxxxxx> writes: > When starting CAC in a mode other than AP mode, it return a > "WARNING: CPU: 0 PID: 63 at cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211]" > caused by the chandef.chan being null at the end of CAC. > > Solution: Ensure the channel definition is set for the different modes > when starting CAC to avoid getting a NULL 'chan' at the end of CAC. > > Call Trace: > ? show_regs.part.0+0x14/0x16 > ? __warn+0x67/0xc0 > ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] > ? report_bug+0xa7/0x130 > ? exc_overflow+0x30/0x30 > ? handle_bug+0x27/0x50 > ? exc_invalid_op+0x18/0x60 > ? handle_exception+0xf6/0xf6 > ? exc_overflow+0x30/0x30 > ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] > ? exc_overflow+0x30/0x30 > ? cfg80211_chandef_dfs_usable+0x20/0xaf [cfg80211] > ? regulatory_propagate_dfs_state.cold+0x1b/0x4c [cfg80211] > ? cfg80211_propagate_cac_done_wk+0x1a/0x30 [cfg80211] > ? process_one_work+0x165/0x280 > ? worker_thread+0x120/0x3f0 > ? kthread+0xc2/0xf0 > ? process_one_work+0x280/0x280 > ? kthread_complete_and_exit+0x20/0x20 > ? ret_from_fork+0x19/0x24 > > Signed-off-by: Issam Hamdi <ih@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Kretschmer Mathias <mathias.kretschmer@xxxxxxxxxxxxxxxxx> When you submit a new version you should mark it as v2 and include a change log what has changed from v1. More info: https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches#changelog_missing And please read the whole wiki page. -- https://patchwork.kernel.org/project/linux-wireless/list/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
