Date: Sun, 16 Nov 2014 00:23:24 +0800 From: Julian Elischer <julian@freebsd.org> To: John-Mark Gurney <jmg@funkthat.com>, freebsd-virtualization@freebsd.org Subject: Re: bhyve remote kgdb does not support kernel modules... Message-ID: <54677DFC.70708@freebsd.org> In-Reply-To: <20141115094340.GZ24601@funkthat.com> References: <20141115093713.GY24601@funkthat.com> <20141115094340.GZ24601@funkthat.com>
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On 11/15/14, 5:43 PM, John-Mark Gurney wrote: > John-Mark Gurney wrote this message on Sat, Nov 15, 2014 at 01:37 -0800: >> So, I got remote kgdb working w/ bhyve, but kernel modules aren't >> loaded... >> >> I'm getting: >> (kgdb) bt >> #0 kdb_enter (why=0xffffffff8102ee88 "panic", msg=<value optimized out>) >> at ../../../kern/subr_kdb.c:444 >> #1 0xffffffff8094aa79 in vpanic (fmt=<value optimized out>, >> ap=<value optimized out>) at ../../../kern/kern_shutdown.c:739 >> #2 0xffffffff8094a8c9 in kassert_panic (fmt=<value optimized out>) >> at ../../../kern/kern_shutdown.c:634 >> #3 0xffffffff8093583c in __mtx_lock_flags (c=0xfffff80002919720, opts=0, >> file=0xffffffff81c3f0fa "/usr/home/jmg/freebsd.p4/opencrypto/sys/modules/aesni/../../crypto/aesni/aesni.c", line=442) at ../../../kern/kern_mutex.c:217 >> #4 0xffffffff81c3e3a7 in ?? () >> #5 0xfffff80002a474a0 in ?? () >> #6 0xfffff80002919720 in ?? () >> >> Where those should be in the aesni.ko module... If I run kgdb on a >> local machine, it properly finds the kernel modules... Any hits on >> how to fix this? works for me.. the modules I'm debugging are not compiled in. you have to have the modules in the standard place ONE THE GDB HOST. I make a chroot with an image of the machine being debugged, PLUS the sources. and then run kgdb from inside that chroot. > Also, any plans to support the Z2 write-watchpoint packet? > > (kgdb) watch *(char *)0xfffff80002919708 > Hardware watchpoint 1: *(char *) 18446735277659625224 > (kgdb) c > Continuing. > Can't clear hardware watchpoints without the 'Z2' (write-watchpoint) packet >
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