From owner-freebsd-wireless@FreeBSD.ORG Tue Jan 28 23:04:09 2014 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 0BF83566 for ; Tue, 28 Jan 2014 23:04:09 +0000 (UTC) Received: from mail-qa0-x22b.google.com (mail-qa0-x22b.google.com [IPv6:2607:f8b0:400d:c00::22b]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id B01BF1367 for ; Tue, 28 Jan 2014 23:04:08 +0000 (UTC) Received: by mail-qa0-f43.google.com with SMTP id o15so1440858qap.16 for ; Tue, 28 Jan 2014 15:04:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=RpjL7LhPRZhrrPHylVscoehU44tlUHHcqhC1u1A/XmA=; b=VYhFerPVQA5wlhP0uCmNlWvI2M+Ki8Nbwqk+Haw+djTkTR3BZa6PKKxH3YV0Y37tJE d+W2l6j6KWFXad3GI7gEbcDajytIkBzwOBYdseOeE+l1L4KpInUGkTayO08O+XeAgGRv p7+YEGcMPcpCHZ9oedRB9Thi9zyb3y8y0IIfE+uaIxI3qk6SaF98s/9NKjSAv+ZNB+s1 FuB2JB+rJCIHycD0YzHpLaIl9X27Ri1NmzKRAfH6aonYjN7m9gEr+tqDF6nPwGgwjtUB v3i3cIHm5s5rr+/o056AHj4+2GbDT4visiID3fkYPELqXP7xd+UnBvCM58yu+AgVzE9V h08Q== MIME-Version: 1.0 X-Received: by 10.224.16.72 with SMTP id n8mr6982175qaa.76.1390950247908; Tue, 28 Jan 2014 15:04:07 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.224.52.8 with HTTP; Tue, 28 Jan 2014 15:04:07 -0800 (PST) In-Reply-To: References: Date: Tue, 28 Jan 2014 15:04:07 -0800 X-Google-Sender-Auth: ErvOwLKJFRJfWTSmvlI7SgEYBYc Message-ID: Subject: Re: FreeBSD 10.0: hostapd crash with Ralink 3070 From: Adrian Chadd To: Pedro Flynn Content-Type: text/plain; charset=ISO-8859-1 Cc: "freebsd-wireless@freebsd.org" X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Jan 2014 23:04:09 -0000 Right, frame 8 (the run beacon update) is passing a NULL mbuf into net80211. Why's it doing that. -a On 28 January 2014 15:02, Pedro Flynn wrote: > Here we go (this output is not beautiful...). Please, let me know if I > missed something or if I did something wrong: > > bt output: > > #0 doadump (textdump=) at pcpu.h:219 > #1 0xffffffff808af530 in kern_reboot (howto=260) > at /usr/src/sys/kern/kern_shutdown.c:447 > #2 0xffffffff808af8f4 in panic (fmt=) > at /usr/src/sys/kern/kern_shutdown.c:754 > #3 0xffffffff80c8e692 in trap_fatal (frame=, > eva=) at /usr/src/sys/amd64/amd64/trap.c:882 > #4 0xffffffff80c8e969 in trap_pfault (frame=0xfffffe009695f720, usermode=0) > at /usr/src/sys/amd64/amd64/trap.c:699 > #5 0xffffffff80c8e0f6 in trap (frame=0xfffffe009695f720) > at /usr/src/sys/amd64/amd64/trap.c:463 > #6 0xffffffff80c75392 in calltrap () > at /usr/src/sys/amd64/amd64/exception.S:232 > #7 0xffffffff809b1163 in ieee80211_beacon_update (ni=0xfffffe0000ffc000, > bo=0xfffff8000e8dd9e8, m=0x0, mcast=0) at atomic.h:161 > #8 0xffffffff81a198bc in run_update_beacon (vap=0xfffff8000e8dd000, item=2) > at /usr/src/sys/modules/usb/run/../../../dev/usb/wlan/if_run.c:3974 > #9 0xffffffff809b42bd in ieee80211_wme_updateparams_locked ( > vap=0xfffff8000e8dd000) at ieee80211_var.h:814 > #10 0xffffffff809b437a in ieee80211_wme_updateparams > (vap=0xfffff8000e8dd000) > at /usr/src/sys/net80211/ieee80211_proto.c:1150 > #11 0xffffffff809b3f43 in ieee80211_wme_initparams (vap= out>) > at /usr/src/sys/net80211/ieee80211_proto.c:955 > #12 0xffffffff809a9aec in ieee80211_sta_join1 () > at /usr/src/sys/net80211/ieee80211_node.c:741 > #13 0xffffffff8099047b in hostap_newstate (vap=0xfffff8000e8dd000, > nstate=, arg=) > at /usr/src/sys/net80211/ieee80211_hostap.c:274 > #14 0xffffffff81a1a36a in run_newstate (vap=, > nstate=IEEE80211_S_RUN, arg=-1) > at /usr/src/sys/modules/usb/run/../../../dev/usb/wlan/if_run.c:1881 > #15 0xffffffff809b2edf in ieee80211_newstate_cb (xvap=0xfffff8000e8dd000, > npending=) > at /usr/src/sys/net80211/ieee80211_proto.c:1756 > #16 0xffffffff808f5b66 in taskqueue_run_locked (queue=0xfffff8000e8e4600) > at /usr/src/sys/kern/subr_taskqueue.c:333 > #17 0xffffffff808f63e8 in taskqueue_thread_loop (arg=) > at /usr/src/sys/kern/subr_taskqueue.c:535 > #18 0xffffffff8088198a in fork_exit ( > callout=0xffffffff808f6340 , > arg=0xfffffe0000ff60f0, frame=0xfffffe009695fc00) > at /usr/src/sys/kern/kern_fork.c:995 > #19 0xffffffff80c758ce in fork_trampoline () > at /usr/src/sys/amd64/amd64/exception.S:606 > #20 0x0000000000000000 in ?? () > > frame 0 > #0 doadump (textdump=) at pcpu.h:219 > 219 pcpu.h: No such file or directory. > in pcpu.h > print doadump > $1 = {int (boolean_t)} 0xffffffff808af6f0 > > frame 1: > #1 0xffffffff808af530 in kern_reboot (howto=260) > at /usr/src/sys/kern/kern_shutdown.c:447 > 447 doadump(TRUE); > print kern_reboot > print kern_reboot > $3 = {void (int)} 0xffffffff808aedf0 > > frame 2 > #2 0xffffffff808af8f4 in panic (fmt=) > at /usr/src/sys/kern/kern_shutdown.c:754 > 754 kern_reboot(bootopt); > (kgdb) print panic > $4 = {void (const char *)} 0xffffffff808af760 > > frame 3 > #3 0xffffffff80c8e692 in trap_fatal (frame=, > eva=) at /usr/src/sys/amd64/amd64/trap.c:882 > 882 panic("%s", trap_msg[type]); > (kgdb) print trap_fatal > $5 = {void (struct trapframe *, vm_offset_t)} 0xffffffff80c8e2f0 > > (kgdb) frame 4 > #4 0xffffffff80c8e969 in trap_pfault (frame=0xfffffe009695f720, usermode=0) > at /usr/src/sys/amd64/amd64/trap.c:699 > 699 trap_fatal(frame, eva); > (kgdb) print trap_pfault > $6 = {int (struct trapframe *, int)} 0xffffffff80c8e6a0 > (kgdb) frame 5 > #5 0xffffffff80c8e0f6 in trap (frame=0xfffffe009695f720) > at /usr/src/sys/amd64/amd64/trap.c:463 > 463 (void) trap_pfault(frame, FALSE); > (kgdb) print trap > $7 = {void (struct trapframe *)} 0xffffffff80c8db10 > > frame 6 > #6 0xffffffff80c75392 in calltrap () > at /usr/src/sys/amd64/amd64/exception.S:232 > 232 call trap > Current language: auto; currently asm > (kgdb) print calltrap > $8 = {} 0xffffffff80c7538a > (kgdb) frame 7 > #7 0xffffffff809b1163 in ieee80211_beacon_update (ni=0xfffffe0000ffc000, > bo=0xfffff8000e8dd9e8, m=0x0, mcast=0) at atomic.h:161 > 161 atomic.h: No such file or directory. > in atomic.h > Current language: auto; currently minimal > (kgdb) print ieee80211_beacon_update > $9 = {int (struct ieee80211_node *, struct ieee80211_beacon_offsets *, > struct mbuf *, int)} 0xffffffff809b1090 > > frame 8 > #8 0xffffffff81a198bc in run_update_beacon (vap=0xfffff8000e8dd000, item=2) > at /usr/src/sys/modules/usb/run/../../../dev/usb/wlan/if_run.c:3974 > 3974 ieee80211_beacon_update(vap->iv_bss, &rvp->bo, rvp->beacon_mbuf, > mcast); > (kgdb) print run_update_beacon > $10 = {void (struct ieee80211vap *, > int)} 0xffffffff81a19750 > (kgdb) frame 9 > #9 0xffffffff809b42bd in ieee80211_wme_updateparams_locked ( > vap=0xfffff8000e8dd000) at ieee80211_var.h:814 > 814 vap->iv_update_beacon(vap, what); > (kgdb) print ieee80211_wme_updateparams_locked > $11 = {void (struct ieee80211vap > *)} 0xffffffff809b3f90 > (kgdb) frame 10 > #10 0xffffffff809b437a in ieee80211_wme_updateparams > (vap=0xfffff8000e8dd000) > at /usr/src/sys/net80211/ieee80211_proto.c:1150 > 1150 ieee80211_wme_updateparams_locked(vap); > (kgdb) print ieee80211_wme_updateparams > $12 = {void (struct ieee80211vap > *)} 0xffffffff809b4320 > > frame 11 > #11 0xffffffff809b3f43 in ieee80211_wme_initparams (vap= out>) > at /usr/src/sys/net80211/ieee80211_proto.c:955 > 955 ieee80211_wme_updateparams(vap); > (kgdb) print ieee80211_wme_initparams > $13 = {void (struct ieee80211vap > *)} 0xffffffff809b3ca0 > (kgdb) frame 12 > #12 0xffffffff809a9aec in ieee80211_sta_join1 () > at /usr/src/sys/net80211/ieee80211_node.c:741 > 741 ieee80211_wme_initparams(vap); > (kgdb) print ieee80211_sta_join1 > $14 = {int (struct ieee80211_node *)} 0xffffffff809a9a10 > > (kgdb) frame 13 > #13 0xffffffff8099047b in hostap_newstate (vap=0xfffff8000e8dd000, > nstate=, arg=) > at /usr/src/sys/net80211/ieee80211_hostap.c:274 > 274 ieee80211_ht_adjust_channel(ic, > (kgdb) print hostap_newstate > $15 = {int (struct ieee80211vap *, enum ieee80211_state, > int)} 0xffffffff80990190 > frame 14 > #14 0xffffffff81a1a36a in run_newstate (vap=, > nstate=IEEE80211_S_RUN, arg=-1) > at /usr/src/sys/modules/usb/run/../../../dev/usb/wlan/if_run.c:1881 > 1881 return(rvp->newstate(vap, nstate, arg)); > (kgdb) print run_newstate > $16 = {int (struct ieee80211vap *, enum ieee80211_state, > int)} 0xffffffff81a19b30 > (kgdb) frame 15 > #15 0xffffffff809b2edf in ieee80211_newstate_cb (xvap=0xfffff8000e8dd000, > npending=) > at /usr/src/sys/net80211/ieee80211_proto.c:1756 > 1756 rc = vap->iv_newstate(vap, nstate, arg); > (kgdb) print ieee80211_newstate_cb > $17 = {void (void *, int)} 0xffffffff809b2d90 > (kgdb) frame 16 > #16 0xffffffff808f5b66 in taskqueue_run_locked (queue=0xfffff8000e8e4600) > at /usr/src/sys/kern/subr_taskqueue.c:333 > 333 task->ta_func(task->ta_context, pending); > (kgdb) print taskqueue_run_locked > $18 = {void (struct taskqueue *)} 0xffffffff808f5a80 > frame 17 > #17 0xffffffff808f63e8 in taskqueue_thread_loop (arg=) > at /usr/src/sys/kern/subr_taskqueue.c:535 > 535 taskqueue_run_locked(tq); > (kgdb) print taskqueue_thread_loop > $19 = {void (void *)} 0xffffffff808f6340 > (kgdb) frame 18 > #18 0xffffffff8088198a in fork_exit ( > callout=0xffffffff808f6340 , > arg=0xfffffe0000ff60f0, frame=0xfffffe009695fc00) > at /usr/src/sys/kern/kern_fork.c:995 > 995 callout(arg, frame); > (kgdb) print fork_exit > $20 = {void (void (*)(void *, struct trapframe *), void *, struct trapframe > *)} 0xffffffff808818f0 > (kgdb) frame 19 > #19 0xffffffff80c758ce in fork_trampoline () > at /usr/src/sys/amd64/amd64/exception.S:606 > 606 call fork_exit > Current language: auto; currently asm > (kgdb) print fork_trampoline > $21 = {} 0xffffffff80c758c0 > frame 20 > #20 0x0000000000000000 in ?? () > > Thanks, > > pflynn > > > On Tue, Jan 28, 2014 at 8:47 PM, Adrian Chadd wrote: >> >> ok, do 'bt', and see what's being passed into ieee80211_beacon_update. >> Use 'frame X' to switch to frame X, and 'print VARIABLE_NAME' to print >> out the contents of the given variable name. >> >> That mbuf looks like it's NULL, which is odd. >> >> Thanks! >> >> >> -a >> >> >> On 28 January 2014 14:45, Pedro Flynn wrote: >> > OK! This is what I have: >> > >> > list * (0xffffffff809b1163) >> > Undefined command: "". Try "help". >> > (kgdb) list * (0xffffffff809b1163) >> > 0xffffffff809b1163 is in ieee80211_beacon_update >> > (/usr/src/sys/net80211/ieee80211_output.c:3099). >> > 3094 /* XXX do WME aggressive mode processing? */ >> > 3095 IEEE80211_UNLOCK(ic); >> > 3096 return 1; /* just assume length changed */ >> > 3097 } >> > 3098 >> > 3099 wh = mtod(m, struct ieee80211_frame *); >> > 3100 seqno = ni->ni_txseqs[IEEE80211_NONQOS_TID]++; >> > 3101 *(uint16_t *)&wh->i_seq[0] = >> > 3102 htole16(seqno << IEEE80211_SEQ_SEQ_SHIFT); >> > 3103 M_SEQNO_SET(m, seqno); >> > Current language: auto; currently minimal >> > (kgdb) >> > >> > >> > (by the way, I'm building a kernel with debug symbols) >> > >> > Thanks, >> > >> > pflynn >> > >> > >> > >> > On Tue, Jan 28, 2014 at 8:34 PM, Adrian Chadd >> > wrote: >> >> >> >> Ok, fire up kgdb >> >> >> >> # kgdb /boot/kernel/kernel /var/crash/vmcore.0 >> >> >> >> then >> >> >> >> (gdb) list * (0xffffffff809b1163) >> >> >> >> (.. that's the "instruction pointer" at the time of the panic.) >> >> >> >> I bet it's iv_bss. >> >> >> >> >> >> >> >> -a >> > >> > > >