Re: panic: blockable sleep lock (sleep mutex) process lock

From: Andre Guibert de Bruet <andy_at_siliconlandmark.com>
Date: Mon, 14 Apr 2003 17:04:16 -0400 (EDT)
Pawel,

Last I've heard, SCHED_ULE isn't SMP friendly.

Regards,

> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/    >

On Mon, 14 Apr 2003 pawel.worach_at_telia.com wrote:

> Hi!
>
> Latest -current panics on my dual x86 box.
> I'm using sched_ule, any ideas?
>
> ps. why doesn't it jump to db> ?
>
> FreeBSD 5.0-CURRENT #0: Mon Apr 14 19:26:10 CEST 2003
>     root_at_darkstar:/usr/obj/usr/src/sys/DARKSTAR
> -- snip --
> SMP: AP CPU #1 Launched!
> panic: blockable sleep lock (sleep mutex) process lock _at_ /usr/src/sys/i386/i386/trap.c:728 cpuid = 0; lapic.id = 00000000 Stack backtrace:
> backtrace(c0330e9e,0,c0332f76,cd1e9a54,1) at backtrace+0x17
> panic(c0332f76,c033f77e,c032f3b5,c03446e7,2d8) at panic+0x10a
> witness_lock(c0eaf068,8,c03446e7,2d8,ffffffff) at witness_lock+0xaf
> _mtx_lock_flags(c0eaf068,0,c03446e7,2d8,c0ea95f0) at _mtx_lock_flags+0x64
> trap_pfault(cd1e9b4c,0,38,5,38) at trap_pfault+0x9d
> trap(18,10,10,c0ea95f0,c0389060) at trap+0x3ad
> calltrap() at calltrap+0x5
> --- trap 0xc, eip = 0xc01dc367, esp = 0xcd1e9b8c, ebp = 0xcd1e9ba0 ---
> sched_choose(c0389060,c0eabc60,0,c0eaf0b8,cd1e9c14) at sched_choose+0x77
> choosethread(c0ea95f0,136,c03316b7,c0388f60,3bd36759) at choosethread+0x35
> mi_switch(c0ea95f0,68,c01d0550,c0ea95f0,0) at mi_switch+0x17d
> msleep(c0381d40,0,68,c032de6b,14) at msleep+0x360
> g_waitidle(c0ea95f0,c0ea95f0,c0eaf000,cd1e9d0c,c01a8e17) at g_waitidle+0x5b
> vfs_mountroot(c03868a0,0,c032eab1,215,2eaa0) at vfs_mountroot+0xd
> start_init(0,cd1e9d48,c032f364,314,0) at start_init+0x47
> fork_exit(c01a8dd0,0,cd1e9d48) at fork_exit+0xae
> fork_trampoline() at fork_trampoline+0x1a
> --- trap 0x1, eip = 0, esp = 0xcd1e9d7c, ebp = 0 ---
> Debugger("panic")
>
> Regards
> Pawel
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Received on Mon Apr 14 2003 - 12:04:18 UTC

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