exclusive sleep mutex acpica subsystem lock r = 0 (0xc14d5300)locked @ /usr/src,/sys/modules/acpi/acpi/../../../dev/acpica/Osd/OsdSynch.c:360

Hi,

I got this at boot with a fresh -CURRENT :

Sleeping on "acsem" with the following non-sleepable locks held:
exclusive sleep mutex acpica subsystem lock r = 0 (0xc14d5300) locked _at_ 
/usr/src
/sys/modules/acpi/acpi/../../../dev/acpica/Osd/OsdSynch.c:360
KDB: stack backtrace:
witness_warn(5,c14d5480,c082b6fb,c0a765dd,c9b7fbe8) at witness_warn+0x1a8
msleep(c14d5480,c14d5480,100,c0a765dd,0) at msleep+0x37
AcpiOsWaitSemaphore(c14d5480,1,ffff,c14dee00,1) at AcpiOsWaitSemaphore+0x140
AcpiUtAcquireMutex(7,c14dee00,18,c9b7fc9c,c0a6a962) at 
AcpiUtAcquireMutex+0x55
AcpiDisableGpe(0,18,1,c13ee520,c9b7fcb0) at AcpiDisableGpe+0x17
EcGpeHandler(c14dee00,0,c14ee100,c9b7fce4,c0a4acb1) at EcGpeHandler+0x1a
AcpiEvGpeDispatch(c13ee520,18,51,3,1000000) at AcpiEvGpeDispatch+0x81
AcpiEvGpeDetect(c14f3650,c14f4c80,c9b7fd1c,c05ffb36,c14f3650) at 
AcpiEvGpeDetect
+0xd1
AcpiEvSciXruptHandler(c14f3650,0,0,c1423000,0) at AcpiEvSciXruptHandler+0x13
ithread_loop(c141c900,c9b7fd48,c141c900,c05ff998,0) at ithread_loop+0x19e
fork_exit(c05ff998,c141c900,c9b7fd48) at fork_exit+0x7e
fork_trampoline() at fork_trampoline+0x8
--- trap 0x1, eip = 0, esp = 0xc9b7fd7c, ebp = 0 ---

naboo# uname -a
FreeBSD naboo 6.0-CURRENT FreeBSD 6.0-CURRENT #0: Wed Dec 29 10:00:40 
CET 2004     dak_at_naboo:/usr/obj/usr/src/sys/GENERIC  i386

-- 
NEPHTALI 'dak' Aurelien
TEK2 - Promo 2008
06.19.84.90.10