kern/163312: [panic] [ath driver] kernel panic: page fault with
ath0 taskq
Koop Mast
kwm at FreeBSD.org
Thu Dec 15 11:30:11 UTC 2011
>Number: 163312
>Category: kern
>Synopsis: [panic] [ath driver] kernel panic: page fault with ath0 taskq
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Dec 15 11:30:10 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator: Koop Mast
>Release: FreeBSD 8.2-STABLE i386
>Organization:
>Environment:
System: FreeBSD freefall.freebsd.org 8.2-STABLE FreeBSD 8.2-STABLE #5 r227907: Wed Nov 23 21:55:50 UTC 2011 simon at freefall.freebsd.org:/usr/obj/usr/src/sys/FREEFALL i386
>Description:
This panic happened while the machine was "idle" running Xorg, gnome3
virtualbox and firefox.
ath0 at pci0:3:0:0: class=0x028000 card=0x10891a3b chip=0x002b168c rev=0x01
hdr=0x00
vendor = 'Atheros Communications Inc.'
device = 'AR9285 Wireless Network Adapter (PCI-Express)'
class = network
FreeBSD crashalot.rainbow-runner.nl 10.0-CURRENT FreeBSD 10.0-CURRENT
#32 r228191M: Fri Dec 2 01:20:19 CET 2011
root at crashalot.rainbow-runner.nl:/usr/obj/usr/src/sys/Sparkel amd64
Fatal trap 12: page fault while in kernel mode
cpuid = 4; apic id = 04
fault virtual address = 0xffffff8002a33a44
fault code = supervisor write data, page not present
instruction pointer = 0x20:0xffffffff802ea7b4
stack pointer = 0x28:0xffffff81134c9aa0
frame pointer = 0x28:0xffffff81134c9b40
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 0 (ath0 taskq)
trap number = 12
panic: page fault
cpuid = 4
KDB: stack backtrace:
db_trace_self_wrapper() at 0xffffffff802c04ba = db_trace_self_wrapper
+0x2a
kdb_backtrace() at 0xffffffff804b3137 = kdb_backtrace+0x37
panic() at 0xffffffff8047b0c7 = panic+0x187
trap_fatal() at 0xffffffff8070e4e0 = trap_fatal+0x290
trap_pfault() at 0xffffffff8070e80b = trap_pfault+0x1db
trap() at 0xffffffff8070ec1f = trap+0x39f
calltrap() at 0xffffffff806f866f = calltrap+0x8
--- trap 0xc, rip = 0xffffffff802ea7b4, rsp = 0xffffff81134c9aa0, rbp =
0xffffff
ath_rx_proc() at 0xffffffff802ea7b4 = ath_rx_proc+0x564
taskqueue_run_locked() at 0xffffffff804c11f3 = taskqueue_run_locked+0x93
taskqueue_thread_loop() at 0xffffffff804c1c9e = taskqueue_thread_loop
+0x3e
fork_exit() at 0xffffffff8044b949 = fork_exit+0x189
fork_trampoline() at 0xffffffff806f8b9e = fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffff81134c9d00, rbp = 0 ---
Uptime: 11h46m29s
Dumping 818 out of 3981
MB:..2%..12%..22%..32%..42%..51%..61%..71%..81%..92%
<snip gdb loading symbols>
#0 doadump (textdump=1) at /usr/src/sys/kern/kern_shutdown.c:261
261 if (textdump && textdump_pending) {
(kgdb) #0 doadump (textdump=1) at /usr/src/sys/kern/kern_shutdown.c:261
#1 0xffffffff8047b7d9 in kern_reboot (howto=260)
at /usr/src/sys/kern/kern_shutdown.c:443
#2 0xffffffff8047b0b1 in panic (fmt=Variable "fmt" is not available.
)
at /usr/src/sys/kern/kern_shutdown.c:608
#3 0xffffffff8070e4e0 in trap_fatal (frame=0xc, eva=Variable "eva" is
not avail
)
at /usr/src/sys/amd64/amd64/trap.c:819
#4 0xffffffff8070e80b in trap_pfault (frame=0xffffff81134c99f0,
usermode=0)
at /usr/src/sys/amd64/amd64/trap.c:735
#5 0xffffffff8070ec1f in trap (frame=0xffffff81134c99f0)
at /usr/src/sys/amd64/amd64/trap.c:474
#6 0xffffffff806f866f in calltrap ()
at /usr/src/sys/amd64/amd64/exception.S:228
#7 0xffffffff802ea7b4 in ath_rx_proc (sc=0xffffff8000a2e000, resched=1)
at /usr/src/sys/dev/ath/if_ath.c:4114
#8 0xffffffff804c11f3 in taskqueue_run_locked
(queue=0xfffffe0002b91000)
at /usr/src/sys/kern/subr_taskqueue.c:308
#9 0xffffffff804c1c9e in taskqueue_thread_loop (arg=Variable "arg" is
not avail
)
at /usr/src/sys/kern/subr_taskqueue.c:497
#10 0xffffffff8044b949 in fork_exit (
callout=0xffffffff804c1c60 <taskqueue_thread_loop>,
arg=0xffffff8000a2e4b0, frame=0xffffff81134c9c50)
at /usr/src/sys/kern/kern_fork.c:995
#11 0xffffffff806f8b9e in fork_trampoline ()
at /usr/src/sys/amd64/amd64/exception.S:602
#12 0x0000000000000000 in ?? ()
#13 0x0000000000000000 in ?? ()
#14 0x0000000000000000 in ?? ()
#15 0x0000000000000000 in ?? ()
#16 0x0000000000000000 in ?? ()
#17 0x0000000000000000 in ?? ()
#18 0x0000000000000000 in ?? ()
#19 0x0000000000000000 in ?? ()
#20 0x0000000000000000 in ?? ()
#21 0x0000000000000000 in ?? ()
#22 0x0000000000000000 in ?? ()
#23 0x0000000000000000 in ?? ()
#24 0x0000000000000000 in ?? ()
#25 0x0000000000000000 in ?? ()
#26 0x0000000000000000 in ?? ()
#27 0x0000000000000000 in ?? ()
#28 0x0000000000000000 in ?? ()
#29 0x0000000000000000 in ?? ()
#30 0x0000000000000000 in ?? ()
#31 0x0000000000000000 in ?? ()
#32 0x0000000000000000 in ?? ()
#33 0x0000000000000000 in ?? ()
#34 0x0000000000000000 in ?? ()
#35 0x0000000000000000 in ?? ()
#36 0xfffffe0002b86428 in ?? ()
#37 0x0000000000000000 in ?? ()
#38 0xffffffff815e9780 in affinity ()
#39 0xfffffe000291d480 in ?? ()
#40 0xffffff81134c94c0 in ?? ()
#41 0xffffff81134c9468 in ?? ()
#42 0xfffffe0002b86000 in ?? ()
#43 0xffffffff804a5a57 in sched_switch (td=0xffffff8000a2e4b0,
newtd=0xffffffff804c1c60, flags=Variable "flags" is not available.
) at /usr/src/sys/kern/sched_ule.c:1853
Previous frame inner to this frame (corrupt stack?)
(kgdb)
>How-To-Repeat:
There isn't realy a way to reproduce it. Since this panic happened on
Dec 7 and the previous one was on Nov 22.
>Fix:
Currently no fix, but running with the attached patch send to me by
Adrian Chadd, to get more info when it happens again.
--- ath_if_ath.c begins here ---
Index: sys/dev/ath/if_ath.c
===================================================================
--- sys/dev/ath/if_ath.c (revision 228191)
+++ sys/dev/ath/if_ath.c (working copy)
@@ -4111,7 +4111,12 @@
}
ifp->if_ipackets++;
+if (rs->rs_antenna > 2) {
+ device_printf(sc->sc_dev, "rs_antenna=0x%x\n", rs->rs_antenna);
+ ath_printrxbuf(sc, bf, 0, status == HAL_OK);
+} else {
sc->sc_stats.ast_ant_rx[rs->rs_antenna]++;
+}
/*
* Populate the rx status block. When there are bpf
--- ath_if_ath.c ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted:
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