Date: Tue, 9 Jan 2001 15:05:32 +0200 (IST) From: Roman Shterenzon <roman@xpert.com> To: Greg Lehey <grog@lemis.com>, Yonatan Bokovza <yonatan@xpert.com> Cc: <hackers@freebsd.org> Subject: Re: Dump analysis (was: Ideas? (fwd)) Message-ID: <Pine.LNX.4.30.0101091502030.31208-200000@jamus.xpert.com> In-Reply-To: <20010108185709.D83353@wantadilla.lemis.com>
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This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. Send mail to mime@docserver.cac.washington.edu for more info. ---876146300-261693850-979045532=:31208 Content-Type: TEXT/PLAIN; charset=US-ASCII On Mon, 8 Jan 2001, Greg Lehey wrote: > On Monday, 8 January 2001 at 10:04:44 +0200, Roman Shterenzon wrote: > > * Roman Shterenzon <roman@xpert.com> [010107 10:24] wrote: > >> Hi, > >> > >> Could you please take a look at : > >> http://www.freebsd.org/cgi/query-pr.cgi?pr=24019 > >> It's my friend's PR. Can you give me some hints on how can I debug this > >> issue. I'm completely puzzled here. > >> It panics on "goto out" with page fault. What I understand from it is that > (kgdb) x/10i epread > (kgdb) x/10i 0xc012a038 > > (kgdb) x/10i epread > 0xc0165f8c <epread>: push %ebp > 0xc0165f8d <epread+1>: mov %esp,%ebp > 0xc0165f8f <epread+3>: sub $0x1c,%esp > 0xc0165f92 <epread+6>: push %edi > 0xc0165f93 <epread+7>: push %esi > 0xc0165f94 <epread+8>: push %ebx > 0xc0165f95 <epread+9>: mov 0x8(%ebp),%eax > 0xc0165f98 <epread+12>: mov %eax,0xfffffff4(%ebp) > 0xc0165f9b <epread+15>: mov 0x118(%eax),%edx > 0xc0165fa1 <epread+21>: add $0x8,%edx The addresses changed (he erased the old crash dump, but attached's the gdb output from the dump we captured). The "lea" instruction, should it be there? --Roman Shterenzon, UNIX System Administrator and Consultant [ Xpert UNIX Systems Ltd., Herzlia, Israel. 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