Date: Thu, 07 Oct 2004 20:16:56 +0400 From: Roman Kurakin <rik@cronyx.ru> To: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk> Cc: hackers@freebsd.org Subject: Re: Printing from kernel Message-ID: <41656BF8.1000703@cronyx.ru> In-Reply-To: <4164E3A9.2050209@DeepCore.dk> References: <41645625.3020209@cronyx.ru> <4164E3A9.2050209@DeepCore.dk>
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Søren Schmidt wrote: > Roman Kurakin wrote: > >> Hi, >> >> I have some problems with printing from kernel. >> At first I think that my problems was cause I use printf, >> but changed all of them to log cause it safe to use from >> interrupt handlers. The situation become better but I still >> observe system lockup in case I output some debug information >> from my driver. > > Yes its a known problem, if you output "enough" from the kernel the > console will eventually lockup, its been so for ages, and I dont think > anyone really have been looking into it. I didn't saw it before, only now after moving from Giant, but probably some system changes affect this. Hm. may be I need to try some old versions to check for this. I'll try to dig this. This was the only eye in kernel I use for ages. rik
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