Date: Thu, 12 Oct 2000 10:34:41 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: John Baldwin <jhb@FreeBSD.ORG> Cc: arch@FreeBSD.ORG Subject: when is it safe to call msleep? Message-ID: <Pine.LNX.4.21.0010121032050.2654-100000@zeppo.feral.com> In-Reply-To: <XFMail.001009123032.jhb@FreeBSD.org>
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I've been fooling around with the new lock stuff and trying to convert things
over, and I called msleep with an initialized MTX_DEF lock held (on my
pc164) during probes, but I got a panic:
fatal kernel trap:
trap entry = 0x2 (memory management fault)
a0 = 0x0
a1 = 0x1
a2 = 0x0
pc = 0xfffffc000051d638
ra = 0xfffffc000051d630
curproc = 0xfffffc00005efe60
pid = 0, comm = swapper
Stopped at mtx_exit_hard+0x118: ldq t1,0(s1) <0x0> <t1=0xfffffc0000
604b18,s1=0x0>
db> t
mtx_exit_hard() at mtx_exit_hard+0x118
msleep() at msleep+0x130
isp_mboxcmd() at isp_mboxcmd+0x284
isp_reset() at isp_reset+0xd80
isp_pci_attach() at isp_pci_attach+0x14dc
device_probe_and_attach() at device_probe_and_attach+0xcc
bus_generic_attach() at bus_generic_attach+0x28
device_probe_and_attach() at device_probe_and_attach+0xcc
bus_generic_attach() at bus_generic_attach+0x28
device_probe_and_attach() at device_probe_and_attach+0xcc
bus_generic_attach() at bus_generic_attach+0x28
cia_attach() at cia_attach+0x1f0
device_probe_and_attach() at device_probe_and_attach+0xcc
root_bus_configure() at root_bus_configure+0x38
configure() at configure+0x40
mi_startup() at mi_startup+0xf4
locorestart() at locorestart+0x6c
Eh?
-matt
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