Date: Tue, 28 Jan 2014 21:06:39 -0200 From: Pedro Flynn <pedro.flynn@gmail.com> To: Adrian Chadd <adrian@freebsd.org> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: FreeBSD 10.0: hostapd crash with Ralink 3070 Message-ID: <CAN48zxn8oU8Dzz4oecJaXTNvP6OpTahm50-zCUs-L_m=WK3WYQ@mail.gmail.com> In-Reply-To: <CAJ-VmokZ5sfiLZc9fSgOwgoSa-5VCvwy1rGAjXQ16GHC3keyhQ@mail.gmail.com> References: <CAN48zxmMZHsjr55AAbFaeB591Ahd9S1-AkGksRiRtgNOJv6DYQ@mail.gmail.com> <CALCpEUHRsquBrE4o6WxfcLgi-O2BN1FtPa%2BrS2Cdk==0dUdPaA@mail.gmail.com> <CAN48zxkXiUFyGuysTSkEPiwdS9VvEZgeyvo1eTr_seFQ2yM-6A@mail.gmail.com> <CAN48zxn%2BeKDFCbFDHwBJOUfyqvjH3whttTH0whtTfgBQxFRrGA@mail.gmail.com> <CAJ-VmonPDSHOzuD8bqpjLC1FjYQqHrwz2-w8u5wCqUw-hspVfQ@mail.gmail.com> <CAN48zx=zhBYSnkm4Kszs4oe1MdGPrP01B_0eysyso7T5a_WWMA@mail.gmail.com> <CAN48zxmxL_h=9B32C1dC5uGAbV_ExEXQoumPS1Zwvwt2RAbPUQ@mail.gmail.com> <CAN48zx=QgdLpTUm3OK2V-TVUxxBpiGF4A1WzZbSL6thqB_C%2B%2Bg@mail.gmail.com> <CAJ-VmokDb3mUj7Xw6hQKvX5beCv_hXLmMm-nAfz_ZZ-EYq1gyQ@mail.gmail.com> <CAN48zxkcJu-nYWrqJmrpC2VQ_LO2RwV6c9r3sUdKA6uXpfjcVQ@mail.gmail.com> <CAJ-VmokH0O6RMRYyvSDcz%2BCNRha9auujxAnKWRxorG=UrG8J8w@mail.gmail.com> <CAN48zx=RwTJL=M=xLi30CDxVVFUAmOgo%2Bd9ONNxyeRwP=i2=aw@mail.gmail.com> <CAJ-Vmo=kFcEjvmUQX87Q_RX4=aVKNyYDHqf-kZ%2Bp0OcgKdZQGA@mail.gmail.com> <CAN48zx=oG0=eTZLqA4QzhEEcriY8Z3BF7PLDX4Qy=GEX%2B3sDmA@mail.gmail.com> <CAJ-VmokZ5sfiLZc9fSgOwgoSa-5VCvwy1rGAjXQ16GHC3keyhQ@mail.gmail.com>
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Just to bring to our attention frame 8:
(kgdb) 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);
Current language: auto; currently minimal
(kgdb) print run_update_beacon
$23 = {void (struct ieee80211vap *,
int)} 0xffffffff81a19750 <run_update_beacon>
(kgdb)
thanks,
pflynn
On Tue, Jan 28, 2014 at 9:04 PM, Adrian Chadd <adrian@freebsd.org> wrote:
> 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 <pedro.flynn@gmail.com> 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=<value optimized out>) 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=<value optimized out>)
> > at /usr/src/sys/kern/kern_shutdown.c:754
> > #3 0xffffffff80c8e692 in trap_fatal (frame=<value optimized out>,
> > eva=<value optimized out>) 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=<value optimized
> > 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=<value optimized out>, arg=<value optimized out>)
> > at /usr/src/sys/net80211/ieee80211_hostap.c:274
> > #14 0xffffffff81a1a36a in run_newstate (vap=<value optimized out>,
> > 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=<value optimized out>)
> > 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=<value optimized
> out>)
> > at /usr/src/sys/kern/subr_taskqueue.c:535
> > #18 0xffffffff8088198a in fork_exit (
> > callout=0xffffffff808f6340 <taskqueue_thread_loop>,
> > 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=<value optimized out>) at pcpu.h:219
> > 219 pcpu.h: No such file or directory.
> > in pcpu.h
> > print doadump
> > $1 = {int (boolean_t)} 0xffffffff808af6f0 <doadump>
> >
> > 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 <kern_reboot>
> >
> > frame 2
> > #2 0xffffffff808af8f4 in panic (fmt=<value optimized out>)
> > at /usr/src/sys/kern/kern_shutdown.c:754
> > 754 kern_reboot(bootopt);
> > (kgdb) print panic
> > $4 = {void (const char *)} 0xffffffff808af760 <panic>
> >
> > frame 3
> > #3 0xffffffff80c8e692 in trap_fatal (frame=<value optimized out>,
> > eva=<value optimized out>) 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
> > <trap_fatal>
> > (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 <trap_pfault>
> > (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 <trap>
> >
> > 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 = {<text variable, no debug info>} 0xffffffff80c7538a <calltrap>
> > (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 <ieee80211_beacon_update>
> >
> > 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 <run_update_beacon>
> > (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 <ieee80211_wme_updateparams_locked>
> > (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 <ieee80211_wme_updateparams>
> >
> > frame 11
> > #11 0xffffffff809b3f43 in ieee80211_wme_initparams (vap=<value optimized
> > 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 <ieee80211_wme_initparams>
> > (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
> > <ieee80211_sta_join1>
> > (kgdb) frame 13
> > #13 0xffffffff8099047b in hostap_newstate (vap=0xfffff8000e8dd000,
> > nstate=<value optimized out>, arg=<value optimized out>)
> > 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 <hostap_newstate>
> > frame 14
> > #14 0xffffffff81a1a36a in run_newstate (vap=<value optimized out>,
> > 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 <run_newstate>
> > (kgdb) frame 15
> > #15 0xffffffff809b2edf in ieee80211_newstate_cb (xvap=0xfffff8000e8dd000,
> > npending=<value optimized out>)
> > 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 <ieee80211_newstate_cb>
> > (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
> <taskqueue_run_locked>
> > frame 17
> > #17 0xffffffff808f63e8 in taskqueue_thread_loop (arg=<value optimized
> out>)
> > at /usr/src/sys/kern/subr_taskqueue.c:535
> > 535 taskqueue_run_locked(tq);
> > (kgdb) print taskqueue_thread_loop
> > $19 = {void (void *)} 0xffffffff808f6340 <taskqueue_thread_loop>
> > (kgdb) frame 18
> > #18 0xffffffff8088198a in fork_exit (
> > callout=0xffffffff808f6340 <taskqueue_thread_loop>,
> > 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 <fork_exit>
> > (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 = {<text variable, no debug info>} 0xffffffff80c758c0
> <fork_trampoline>
> > frame 20
> > #20 0x0000000000000000 in ?? ()
> >
> > Thanks,
> >
> > pflynn
> >
> >
> > On Tue, Jan 28, 2014 at 8:47 PM, Adrian Chadd <adrian@freebsd.org>
> 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 <pedro.flynn@gmail.com> 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 <adrian@freebsd.org>
> >> > 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
> >> >
> >> >
> >
> >
>
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