Date: Fri, 27 May 2011 19:16:49 -0400 From: vasanth raonaik <vasanth.raonaik@gmail.com> To: freebsd-hackers@freebsd.org Subject: double fault panic while using gdb amd64 (remote debugging) Message-ID: <BANLkTimi_qKQOdjh_WrQ-yQ3ZpJ9QTfnTQ@mail.gmail.com>
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Hello hackers, I see a "double fault" error on the console while remote debugging a freebsd kernel 6.1 on amd64 the moment I press continue on a break point. I googled and found similar query but couldn't find a solution to this issue. Is this a known issue? Has there been any fix made for this issue in the latest freebsd? here is the email that I found while searching. http://forum.nginx.org/read.php?23,183241 ================= Hi, I have looked at archives but with no output. I am running freebsd7.2 amd64 as a virtual machine(VM) in vmware ESX server. I have configured remote gdb to debug the kernel modules. My problem is that whenever the breakpoint is hit and the I issue next or step kernel panics with "double fault" error. This configuration was working for 32-bit machine very well. I am trying to debug the tmpfs module. Panic message on console is: Fatal double fault rip = 0xffffffff80552be1 rsp = 0xffffffff006f5000 rbp = 0xffffffff006f5000 cpuid = 0; apic id = 00 panic: double fault cpuid = 0 Uptime: 1h16m8s Physical memory: 4555 MB Dumping 207 MB: 192 176 160 144 128 112 96 80 64 48 32 16 Dump complete I tried searching this problem on google also but with no help. Any help will be appreciated. Thanks, Mayank =================
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