if_ath and contigmalloc

[Ferruccio Zamuner <nonsolosoft@xxxxxxxx>]

Hi,

uname -a
DragonFly lap 2.7-DEVELOPMENT DragonFly v2.7.2.35.g209d9-DEVELOPMENT #3: 
Fri Apr 23 10:20:05 CEST 2010     ferz@lap:/dati/obj/usr/src/sys/GENERIC 
 i386

kldload if_ath.ko   # doesn't return

from top:

PID       3980
USERNAME  root
PRI        170
NICE         0
SIZE       304K
RES        152K
STATE   vpctw0
TIME      0:00
CTIME     0:00
CPU       9.28%
COMMAND kldload

kgdb /boot/kernel /dev/kmem

looked for kldload thread:

#
hread 14
#
[Switching to thread 14 (pid 2888/0, ifconfig)]#0  _crit_exit_quick ()
#
    at /usr/src/sys/sys/thread2.h:177
#
177         globaldata_t gd = curtd->td_gd;
#
(kgdb) bt
#
#0  _crit_exit_quick () at /usr/src/sys/sys/thread2.h:177
#
#1  lwkt_switch () at /usr/src/sys/kern/lwkt_thread.c:777
#
#2  0xc0368f6e in tsleep (ident=0xcfef4d28, flags=0, wmesg=0xc0652d69 
"vpctw0", timo=0)
#
    at /usr/src/sys/kern/kern_synch.c:622
#
#3  0xc0544060 in vm_page_sleep_busy (queue=257, count=112642) at 
/usr/src/sys/vm/vm_page.h:659
#
#4  vm_contig_pg_clean (queue=257, count=112642) at 
/usr/src/sys/vm/vm_contig.c:153
#
#5  vm_contig_pg_flush (queue=257, count=112642) at 
/usr/src/sys/vm/vm_contig.c:188
#
#6  0xc0544541 in vm_contig_pg_alloc (size=192000, type=0xc06ef300, 
flags=5633, low=0,
#
    high=4294967295, alignment=4096, boundary=0, map=0xc078e240) at 
/usr/src/sys/vm/vm_contig.c:266
#
#7  contigmalloc_map (size=192000, type=0xc06ef300, flags=5633, low=0, 
high=4294967295,
#
    alignment=4096, boundary=0, map=0xc078e240) at 
/usr/src/sys/vm/vm_contig.c:475
#
#8  0xc0544915 in contigmalloc (size=192000, type=0xc06ef300, 
flags=5633, low=0, high=0,
#
    alignment=4096, boundary=0) at /usr/src/sys/vm/vm_contig.c:457
#
#9  0xc05c926c in bus_dmamem_alloc (dmat=0xd3e7a280, vaddr=0xcfbdcf8c, 
flags=5, mapp=0xcfbdcfa4)
#
    at /usr/src/sys/platform/pc32/i386/busdma_machdep.c:570
#
#10 0xd3fef92f in ath_descdma_setup (sc=0xcfbdc7c0, dd=0xcfbdcf88, 
head=0xcfbdcfac,
#
    name=0xd3ff5bd7 "tx", nbuf=200, ndesc=10) at 
/usr/src/sys/dev/netif/ath/ath/if_ath.c:3373
#
#11 0xd3feffc1 in ath_desc_alloc (devid=26, sc=0xcfbdc7c0)
#
    at /usr/src/sys/dev/netif/ath/ath/if_ath.c:3481
#
#12 ath_attach (devid=26, sc=0xcfbdc7c0) at 
/usr/src/sys/dev/netif/ath/ath/if_ath.c:456
#
#13 0xd3ff4ec5 in ath_pci_attach (dev=0xc2a468a8)
#
    at /usr/src/sys/dev/netif/ath/ath/if_ath_pci.c:165
#
#14 0xc0371ba8 in DEVICE_ATTACH (dev=0xc2a468a8) at ./device_if.h:40
#
#15 device_doattach (dev=0xc2a468a8) at /usr/src/sys/kern/subr_bus.c:1662
#
#16 0xc03726cd in device_probe_and_attach (dev=0xc2a468a8) at 
/usr/src/sys/kern/subr_bus.c:1622
#
#17 0xc04e8785 in pci_driver_added (dev=0xc2a46858, driver=0xd3ff75ac)
#
    at /usr/src/sys/bus/pci/pci.c:3099
#
#18 0xc03713ce in BUS_DRIVER_ADDED (dc=0xc29a1600, driver=0xd3ff75ac) at 
. /bus_if.h:71
#
#19 devclass_add_driver (dc=0xc29a1600, driver=0xd3ff75ac) at 
/usr/src/sys/kern/subr_bus.c:642
#
#20 0xc0371b22 in driver_module_handler (mod=0xccacfe18, what=0, 
arg=0xd3ff7598)
#
    at /usr/src/sys/kern/subr_bus.c:3068
#
#21 0xc0337552 in module_register_init (arg=0xd3ff758c) at 
/usr/src/sys/kern/kern_module.c:112
#
#22 0xc03391a2 in linker_file_sysinit (filename=0xc294c6d8 
"/boot/modules/if_ath.ko",
#
    result=0xd3b2ec7c) at /usr/src/sys/kern/kern_linker.c:171
#
#23 linker_load_file (filename=0xc294c6d8 "/boot/modules/if_ath.ko", 
result=0xd3b2ec7c)
#
    at /usr/src/sys/kern/kern_linker.c:336
#
#24 0xc03392cd in linker_load_module (kldname=<value optimized out>, 
modname=0xcf9e6400 "if_ath",
#
    parent=0x0, verinfo=0x0, lfpp=0xd3b2eca8) at 
/usr/src/sys/kern/kern_linker.c:1497
#
#25 0xc0339676 in sys_kldload (uap=0xd3b2ecf0) at 
/usr/src/sys/kern/kern_linker.c:785
#
#26 0xc05de7f7 in syscall2 (frame=0xd3b2ed40) at 
/usr/src/sys/platform/pc32/i386/trap.c:1319
#
#27 0xc05cc046 in Xint0x80_syscall () at 
/usr/src/sys/platform/pc32/i386/exception.s:876
#
#28 0x0000001f in ?? ()
#
Backtrace stopped: previous frame inner to this frame (corrupt stack?)


http://pastebin.com/d76uRuPu