>Number: 101096
>Category: usb
>Synopsis: USB WLAN occasionally causes kernel-panics during large
>downloads
>Confidential: no
>Severity: critical
>Priority: medium
>Responsible: freebsd-usb
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Jul 31 13:20:13 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Pascal G. Hofstee
>Release: FreeBSD/i386 6.1-RELEASE
>Organization:
>Environment:
FreeBSD chekov.ufp.fli4l 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Sat Jul 29
19:29:11 CEST 2006 [EMAIL PROTECTED]:/usr/obj/usr/src/sys/CHEKOV i386
>Description:
DUring downloads of large documentrs over my USB WLAN interface (if_ural
driver) the system occasionally breaks down because of kernel-panics.
Script started on Mon Jul 32 14:59:09 2006
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so:
Undefined symbol "ps_pglobal_lookup"]
GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "i386-marcel-freebsd".
Unread portion of the kernel message buffer:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x4
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc077be82
stack pointer = 0x28:0xcc1b1bb4
frame pointer = 0x28:0xcc1b1bd4
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 23 (irq10: pcm0 uhci0+)
trap number = 12
panic: page fault
Uptime: 1d1h7m46s
Dumping 255 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 255MB (65276 pages) 240 224 208 192 176 160 144 128 112 96 80 64 48
32 16
#0 doadump () at pcpu.h:165
165 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) bt full
#0 doadump () at pcpu.h:165
No locals.
#1 0xc06cdbd7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:402
first_buf_printf = 1
#2 0xc06cdf19 in panic (fmt=0xc097a0bb "%s")
at /usr/src/sys/kern/kern_shutdown.c:558
td = (struct thread *) 0xc253d300
bootopt = 260
newpanic = 0
ap = 0xc253d300 ""
buf = "page fault", '\0' <repeats 245 times>
#3 0xc092b73c in trap_fatal (frame=0xcc1b1b74, eva=0)
at /usr/src/sys/i386/i386/trap.c:836
code = 40
type = 12
ss = 40
esp = 0
softseg = {ssd_base = 0, ssd_limit = 1048575, ssd_type = 27,
ssd_dpl = 0, ssd_p = 1, ssd_xx = 0, ssd_xx1 = 0, ssd_def32 = 1,
ssd_gran = 1}
msg = 0x0
#4 0xc092b412 in trap_pfault (frame=0xcc1b1b74, usermode=0, eva=4)
at /usr/src/sys/i386/i386/trap.c:744
va = 0
vm = (struct vmspace *) 0x0
map = 0x1
rv = 1
ftype = 1 '\001'
td = (struct thread *) 0xc253d300
p = (struct proc *) 0xc260d000
#5 0xc092afad in trap (frame=
{tf_fs = -1066598392, tf_es = -1034747864, tf_ds = 40, tf_edi =
-1033379840, tf_esi = 0, tf_ebp = -870638636, tf_isp = -870638688, tf_ebx =
-1033376556, tf_edx = -1033606400, tf_ecx = -1033699328, tf_eax = 0, tf_trapno
= 12, tf_err = 0, tf_eip = -1065894270, tf_cs = 32, tf_eflags = 66182, tf_esp =
-1033601280, tf_ss = -1033601248}) at /usr/src/sys/i386/i386/trap.c:434
td = (struct thread *) 0xc253d300
p = (struct proc *) 0xc260d000
sticks = 0
i = 0
ucode = 0
type = 12
code = 0
eva = 4
#6 0xc09174ba in calltrap () at /usr/src/sys/i386/i386/exception.s:139
No locals.
#7 0xc077be82 in ieee80211_free_node (ni=0x0)
at /usr/src/sys/net80211/ieee80211_node.c:1600
nt = (struct ieee80211_node_table *) 0xc267ecd4
__func__ = "ieee80211_free_node"
#8 0xc0638575 in ural_txeof (xfer=0xc2749b00, priv=0xc267ecd4,
status=USBD_NORMAL_COMPLETION) at /usr/src/sys/dev/usb/if_ural.c:887
data = (struct ural_tx_data *) 0xc267ecd4
sc = (struct ural_softc *) 0xc267e000
ifp = (struct ifnet *) 0xc269dc00
#9 0xc0655b83 in usb_transfer_complete (xfer=0xc2749b00)
at /usr/src/sys/dev/usb/usbdi.c:863
pipe = 0xc27c7700
dmap = (usb_dma_t *) 0xc2749b3c
sync = 0
erred = 0
repeat = 0
polling = 0
#10 0xc0644f25 in uhci_idone (ii=0x0) at /usr/src/sys/dev/usb/uhci.c:1499
xfer = 0xc2749b00
upipe = (struct uhci_pipe *) 0xc27c7700
std = (uhci_soft_td_t *) 0xc2646b00
status = 0
nstatus = 0
actlen = 120
#11 0xc0644dd8 in uhci_check_intr (sc=0xc2630000, ii=0xc2749b70)
at /usr/src/sys/dev/usb/uhci.c:1374
std = (uhci_soft_td_t *) 0xc2630000
lstd = (uhci_soft_td_t *) 0xc2646b00
status = 0
#12 0xc0644cef in uhci_softintr (v=0xc2630000)
at /usr/src/sys/dev/usb/uhci.c:1304
sc = (uhci_softc_t *) 0xc2630000
ii = (uhci_intr_info_t *) 0x0
nextii = (uhci_intr_info_t *) 0xc2721970
#13 0xc0652302 in usb_schedsoftintr (bus=0x0)
at /usr/src/sys/dev/usb/usb.c:871
No locals.
#14 0xc0644c9c in uhci_intr1 (sc=0xc2630000)
at /usr/src/sys/dev/usb/uhci.c:1274
status = 1
ack = 1
#15 0xc0644a8d in uhci_intr (arg=0xc2630000)
at /usr/src/sys/dev/usb/uhci.c:1189
sc = (uhci_softc_t *) 0xc2646b00
#16 0xc06b34c8 in ithread_execute_handlers (p=0xc260d000, ie=0xc2539800)
at /usr/src/sys/kern/kern_intr.c:684
ih = (struct intr_handler *) 0xc262e600
ihn = (struct intr_handler *) 0xc264a8c0
#17 0xc06b3636 in ithread_loop (arg=0xc263b570)
at /usr/src/sys/kern/kern_intr.c:767
intr_event = (struct intr_thread *) 0xc263b570
ie = (struct intr_event *) 0xc2539800
td = (struct thread *) 0xc253d300
p = (struct proc *) 0xc260d000
#18 0xc06b1f3f in fork_exit (callout=0xc06b35c0 <ithread_loop>, arg=0x0,
frame=0x0) at /usr/src/sys/kern/kern_fork.c:805
p = (struct proc *) 0xc260d000
td = (struct thread *) 0xc2646b00
#19 0xc091751c in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:208
No locals.
(kgdb)
Script done on Mon Jul 31 14:59:41 2006
>How-To-Repeat:
Usually downloading a rather large document through USB WLAN interface triggers
the crashes, e.g. diablo-jdk15, firefox etc.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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