Date: Tue, 06 Feb 2001 15:14:37 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Jim Bloom <bloom@acm.org> Cc: current@FreeBSD.org Subject: Re: Kernel Panic from Yesterday's CVSup Message-ID: <XFMail.010206151437.jhb@FreeBSD.org> In-Reply-To: <3A807C86.DFD3F274@acm.org>
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On 06-Feb-01 Jim Bloom wrote: > Which kernel do you want me to try this with? I have tried two > different kernels with two different errors. (Both have been sent at > different times in the past couple days.) The registers listed here > from the second kernel (with WITNESS, INVARIANTS, INVARIANT_SUPPORT, > MUTEX_DEBUG). As such the addresses disagree (sw1b has 8 more bytes for > invariants), but the text segment was correct. You'll have to turn off WITNESS to get it to die in cpu_switch(), but you'll want to leave the others on for now. > Without debug, I get the trap 9. With debug, I get a trap 12 > immediately followed by a panic with mutex shced lock recursion. > > I rebuilt the kernel with out the debugging and check the state of > things. The code is correct and the esi register had the expected > value. Hmmmmmmmm. Ok, try with debugging minus WITNESS (and you don't want MUTEX_DEBUG, that slows things down a _lot_). Then see if %esi is still 0x100 instead of 0x20. If so, then check the instructions to make sure they aren't hosed. > P.S. I am hitting the same problem Robert Watson mentioned. I don't > have room for three kernels on the machine. Yes. :( The default / size for -current is not very good, as development boxes need more room on / than production boxes. -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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