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Date:      Tue, 29 Mar 2005 12:09:19 +0200
From:      Oleg Tarasov <subscriber@osk.com.ua>
To:        freebsd-stable@FreeBSD.org
Subject:   Re: kernel panics on sio interrupt-level overflows
Message-ID:  <69880762.20050329120919@osk.com.ua>
In-Reply-To: <15810317675.20050324122809@osk.com.ua>
References:  <15810317675.20050324122809@osk.com.ua>

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Hello,

This problem had unusual solution. It seems the key to this problem is
that FreeBSD 5.3-STABLE-p5 (I have updated my system) has DEADLOCKS
when intensively using sio device on high speed (115200) with SMP support.
It seems that MPSAFE causes those deadlocks. Turning

debug.mpsafenet="0"

in /boot/loader.conf
makes the system to work fine & stable instead of panicing every hour
or more often

-- 
Best regards,
 Oleg Tarasov                          mailto:subscriber@osk.com.ua



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