Kernel panic occurs for devices using p54usb on recent mainline kernels: cf. mailing list discussion http://thread.gmane.org/gmane.linux.kernel.wireless.general/132327/ Currently bisecting near 3.17-rc1. In my case, the panic seems to occur as soon as connecting to an AP using WPA2. For another's case, not until long packet transmission. Quote: > >I did not get the entire traceback, but I got a reference to >p54_tx_80211+0x3de >from p54common.ko. Using gdb to disassemble this reference, the erring code is >as follows: > >(gdb) l *p54_tx_80211+0x3de >0x3c9e is in p54_tx_80211 (drivers/net/wireless/p54/txrx.c:913). >908 memcpy(skb_put(skb, 8), >&(info->control.hw_key->key >909 >[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8); >910 } >911 /* reserve some space for ICV */ >912 len += info->control.hw_key->icv_len; >913 memset(skb_put(skb, info->control.hw_key->icv_len), 0, >914 info->control.hw_key->icv_len); >915 } else { >916 txhdr->key_type = 0; >917 txhdr->key_len = 0; > >At present I do not know why there is a problem with skb_put() here. Perhaps >someone else will know before I find it.
Christian Lamparter has a fix for this that will be sent to Kalle in the near future. This bug report can be marked RESOLVED/CODE FIX and closed.