[Bug 209392] Panic on FreeBSD guest on bhyve

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209392

            Bug ID: 209392
           Summary: Panic on FreeBSD guest on bhyve
           Product: Base System
           Version: 10.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: pkubaj at anongoth.pl
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

I've got a bhyve host (10.3-RELEASE-p2) running bhyve guest of FreeBSD
10.3-RELEASE-p2.

The guest is supposed to be a test box for ports. When I run 'portsnap fetch
extract', only a part of ports extracts. Then, it stops and after some time the
guest panics (host is unaffected).

Backtrace of vmcore is:
#0  doadump (textdump=<value optimized out>) at pcpu.h:219
#1  0xffffffff80950cc2 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:486
#2  0xffffffff809510a5 in vpanic (fmt=<value optimized out>, 
    ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:889
#3  0xffffffff80950f33 in panic (fmt=0x0)
    at /usr/src/sys/kern/kern_shutdown.c:818
#4  0xffffffff80937097 in _mtx_lock_spin_cookie (c=<value optimized out>, 
    tid=<value optimized out>, opts=<value optimized out>, 
    file=<value optimized out>, line=<value optimized out>)
    at /usr/src/sys/kern/kern_mutex.c:568
#5  0xffffffff80d44cd1 in smp_tlb_shootdown (vector=246, 
    pmap=0xffffffff816cd5e0, addr1=18446741876820213760, 
    addr2=18446741876820217856) at /usr/src/sys/amd64/amd64/mp_machdep.c:1164
#6  0xffffffff80d46b7c in pmap_invalidate_range (pmap=<value optimized out>, 
    sva=<value optimized out>, eva=<value optimized out>)
    at /usr/src/sys/amd64/amd64/pmap.c:1515
#7  0xffffffff809df4c0 in allocbuf (bp=0xfffffe007b9f9848, size=0)
    at /usr/src/sys/kern/vfs_bio.c:4334
#8  0xffffffff809e0360 in getnewbuf (maxsize=<value optimized out>, 
    gbflags=<value optimized out>) at /usr/src/sys/kern/vfs_bio.c:2198
#9  0xffffffff809dd6b1 in getblk (vp=0xfffff800029eace8, blkno=3847040, 
    size=32768, slpflag=0, slptimeo=0, flags=<value optimized out>)
---Type <return> to continue, or q <return> to quit---
    at /usr/src/sys/kern/vfs_bio.c:3275
#10 0xffffffff809de19d in breadn_flags (vp=0xfffff800029eace8, blkno=0, 
    size=0, rablkno=0x0, rabsize=0x0, cnt=0, cred=0xfffffe0093505868, flags=0, 
    bpp=0xfffffe0093505868) at /usr/src/sys/kern/vfs_bio.c:1130
#11 0xffffffff80b860f1 in ffs_update (vp=0xfffff80002f47938, waitfor=0)
    at /usr/src/sys/ufs/ffs/ffs_inode.c:111
#12 0xffffffff80baef67 in ffs_sync (mp=0xfffff800029d1330, waitfor=Cannot
access memory at address 0x1
)
    at /usr/src/sys/ufs/ffs/ffs_vfsops.c:1461
#13 0xffffffff809fb426 in sync_fsync (ap=<value optimized out>)
    at /usr/src/sys/kern/vfs_subr.c:3857
#14 0xffffffff80e81af7 in VOP_FSYNC_APV (vop=<value optimized out>, 
    a=<value optimized out>) at vnode_if.c:1330
#15 0xffffffff809fbe1b in sched_sync () at vnode_if.h:549
#16 0xffffffff8091a4ea in fork_exit (callout=0xffffffff809fba70 <sched_sync>, 
    arg=0x0, frame=0xfffffe0093505ac0) at /usr/src/sys/kern/kern_fork.c:1027
#17 0xffffffff80d3be0e in fork_trampoline ()
    at /usr/src/sys/amd64/amd64/exception.S:611
#18 0x0000000000000000 in ?? ()


My CPU's are two AMD Opteron(tm) Processor 6262 HE.

Other OS's work just fine on bhyve. I use CentOS to compile some stuff and
there are no issues. The same can be said about OpenBSD, so only FreeBSD has
problems.

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