Date: Thu, 30 Jul 2015 13:00:38 -0700 From: Peter Grehan <grehan@freebsd.org> To: Manas Bhatnagar <b.manas.88@gmail.com> Cc: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: Segmentation Fault with grub-bhyve Message-ID: <55BA8266.60907@freebsd.org> In-Reply-To: <55BA75DB.7090704@gmail.com> References: <55BA4259.7010007@gmail.com> <55BA75DB.7090704@gmail.com>
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Hi Manas,
> Just a follow up, here is the backtrace from GDB
Thanks for the core. Appended is a backtrace with symbols. The source
may not be an exact match but it's close enough to show the issue is in zfs.
Just to check: are you booting a Debian VM with a ZFS filesystem ?
The version of ZFS in grub2-bhyve doesn't work with FreeBSD (the
supported pool version is too old) so it's never had much of a workout.
I'm looking at backporting some of the more recent grub ZFS code but
it's going to take a while.
later,
Peter.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00000000004798d3 in fill_vdev_info_real (data=0x5304f0 <options+80>,
nvlist=0x0, fill=0x40b5bf <grub_print_error+39>,
insert=0x7fffffffe0e0,
inserted=0x0, ashift=8) at fs/zfs/zfs.c:639
warning: Source file is more recent than executable.
639 fill->type = DEVICE_LEAF;
(gdb) where
#0 0x00000000004798d3 in fill_vdev_info_real (data=0x5304f0 <options+80>,
nvlist=0x0, fill=0x40b5bf <grub_print_error+39>,
insert=0x7fffffffe0e0,
inserted=0x0, ashift=8) at fs/zfs/zfs.c:639
#1 0x0000000000481864 in grub_zfs_read (file=0x481864 <grub_zfs_read+602>,
buf=0x7fffffffe190 "\340\341\377\377\377\177", len=33443870448)
at fs/zfs/zfs.c:3627
#2 0x0000000000481977 in fill_fs_info (info=0x0, mdn=..., data=0x0)
at fs/zfs/zfs.c:3675
#3 0x000000000047ae4e in recovery (bufs=0x7fffffffe238, s=1536, nbufs=0,
powers=0x7fffffffe1e0, idx=0x80221900c) at fs/zfs/zfs.c:1130
#4 0x000000000047b3e6 in recovery (bufs=0x8020e4000, s=34389098696,
nbufs=8,
powers=0x11f, idx=0x8000) at fs/zfs/zfs.c:1173
#5 0x0000000000482024 in grub_zfs_dir (device=0x802219018,
path=0x7fffffffeb30 "\b")
at fs/zfs/zfs.c:3748
#6 0x00000000004830d3 in grub_memcpy (dest=0x7fffffffe8e0,
src=0x8020f4800,
n=18446744065119617024) at ../include/grub/misc.h:74
#7 0x0000000000000000 in ?? ()
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