Return-path: Received: from mail-wi0-f196.google.com ([209.85.212.196]:33371 "EHLO mail-wi0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752596AbbEQK3f (ORCPT ); Sun, 17 May 2015 06:29:35 -0400 Received: by wivz2 with SMTP id z2so6033824wiv.0 for ; Sun, 17 May 2015 03:29:34 -0700 (PDT) Message-ID: <55586D8D.7040407@gmail.com> (sfid-20150517_123323_508602_E174E9CE) Date: Sun, 17 May 2015 12:29:33 +0200 From: Arend van Spriel MIME-Version: 1.0 To: Haggai Eran , Larry Finger CC: Florian Schilhabel , linux-wireless@vger.kernel.org Subject: Re: kernel page fault in r8712u References: <55575AC8.2060301@lwfinger.net> <5557844B.4040108@lwfinger.net> In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: On 17-05-15 06:25, Haggai Eran wrote: > On 16 May 2015 at 20:54, Larry Finger wrote: >> Another location needed from gdb is "l *recv_func+0x8c". > > Here it is: > (gdb) l *recv_func+0x8c > 0x17094 is in recv_func (drivers/staging/rtl8712/rtl8712_recv.c:1004). > 999 r8712_free_recvframe(orig_prframe, pfree_recv_queue); > 1000 goto _exit_recv_func; > 1001 } > 1002 _exit_recv_func: > 1003 return retval; > 1004 } > 1005 > 1006 static int recvbuf2recvframe(struct _adapter *padapter, struct > sk_buff *pskb) > 1007 { > 1008 u8 *pbuf, shift_sz = 0; > > I don't think this means the relevant call is the one at line 999. I > think it is an earlier call, after r8712_validate_recv_frame. Here's > the disassembly: can you provide the address of recv_func as well to determine the exact location in assembly. Regards, Arend > /* check the frame crtl field and decache */ > retval = r8712_validate_recv_frame(padapter, prframe); > 17070: e1a00004 mov r0, r4 > 17074: e1a01005 mov r1, r5 > 17078: ebfffffe bl 17bc0 > if (retval != _SUCCESS) { > 1707c: e3500001 cmp r0, #1 > r8712_free_recvframe(orig_prframe, pfree_recv_queue); > goto _exit_recv_func; > } > } > /* check the frame crtl field and decache */ > retval = r8712_validate_recv_frame(padapter, prframe); > 17080: e1a06000 mov r6, r0 > if (retval != _SUCCESS) { > 17084: 0a000005 beq 170a0 > /* free this recv_frame */ > r8712_free_recvframe(orig_prframe, pfree_recv_queue); > 17088: e1a00005 mov r0, r5 > 1708c: e1a01007 mov r1, r7 > 17090: ebfffffe bl 166e8 > r8712_free_recvframe(orig_prframe, pfree_recv_queue); > goto _exit_recv_func; > } > _exit_recv_func: > return retval; > } > 17094: e1a00006 mov r0, r6 > > Haggai > -- > To unsubscribe from this list: send the line "unsubscribe linux-wireless" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >