Date: Mon, 4 May 1998 21:02:55 +0200 From: Eivind Eklund <eivind@yes.no> To: Wm Brian McCane <root@bmccane.maxbaud.net>, freebsd-current@FreeBSD.ORG Subject: Re: httpd caught SIGBUS????? Message-ID: <19980504210255.01076@follo.net> In-Reply-To: <Pine.BSF.3.91.980504082852.21814C-100000@bmccane>; from Wm Brian McCane on Mon, May 04, 1998 at 08:30:49AM -0500 References: <19980502140801.12293@follo.net> <Pine.BSF.3.91.980504082852.21814C-100000@bmccane>
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On Mon, May 04, 1998 at 08:30:49AM -0500, Wm Brian McCane wrote: > > On Sat, 2 May 1998, Eivind Eklund wrote: > > > On Sat, May 02, 1998 at 05:35:54AM -0500, Phillip Salzman wrote: > > > *default date=yr.mm.dd.hh.mm.ss - i did 98.04.20.00.00.00, but I just > > > remembered that the Linux emu. was broken, and x11amp just core dumped > > > on signal 10 for me... I do not know if it was broken on that date or > > > not - maybe my hardware is b0rked. > > > > I think this might have been the mapping of protection faults in > > FreeBSD to SIGBUS while they in Linux are mapped to SIGSEGV. I > > commited a fix for this (by Fred Gilham) on 1998/04/28 11:15:09 PDT. > > You could get this separately. It at least fix SIGBUS problems in a > > host of other programs. > > > > I rebuilt apache with debug and tested this in gdb. The problem is with > the mmap'd scoreboard file. The file is opened, and used a random number > of times (seemed random 8). Then the next time you try to use it, it is > gone (closed maybe?), and you try to access memory that is no longer > mapped into your program. > That's the VM problems. I was talking about SIGBUS in emulated Linux programs. If anybody still have problems with weird signals when emulating Linux programs, please shout. Eivind. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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