HAMMER kernel panic on git-clone

[YONETANI Tomokazu]

On Sat, Jul 19, 2008 at 12:07:35PM +0900, YONETANI Tomokazu wrote:
> #7  0xc0256ca9 in hammer_modify_inode (ip=0xd5e05500, flags=1)
>     at /home/source/dragonfly/R2_0/src/sys/vfs/hammer/hammer_inode.c:1342
> #8  0xc025e448 in hammer_ip_add_directory (trans=0xd5eb7af0, dip=0xd2981250,
>     name=0xc25091c0 "02d41ce21323b1cdc228c78cec2f81c054bd34", bytes=38,
>     ip=0xd5e05500)
>     at /home/source/dragonfly/R2_0/src/sys/vfs/hammer/hammer_object.c:630
> #9  0xc0267dab in hammer_vop_nlink (ap=0xd5eb7b2c)
>     at /home/source/dragonfly/R2_0/src/sys/vfs/hammer/hammer_vnops.c:1010
> #10 0xc01ecdfd in vop_nlink (ops=0xcc3b0170, nch=0xd5eb7c48, dvp=0xd5e223e8,
>     vp=0xd5e3ec28, cred=0xd5bd2c18)
>     at /home/source/dragonfly/R2_0/src/sys/kern/vfs_vopops.c:1091
> #11 0xc01e84b1 in kern_link (nd=0xd5eb7c80, linknd=0xd5eb7c48)
>     at /home/source/dragonfly/R2_0/src/sys/kern/vfs_syscalls.c:2080
> #12 0xc01e851c in sys_link (uap=0xd5eb7cf0)
>     at /home/source/dragonfly/R2_0/src/sys/kern/vfs_syscalls.c:2102
> #13 0xc02b223f in syscall2 (frame=0xd5eb7d40)
>     at /home/source/dragonfly/R2_0/src/sys/platform/pc32/i386/trap.c:1384
> #14 0xc029ea76 in Xint0x80_syscall ()
>     at /home/source/dragonfly/R2_0/src/sys/platform/pc32/i386/exception.s:876
> #15 0x282e6324 in ?? ()

A-ha, looking at ktrace output (somehow truss stuck in the middle of
execution) and the UFS source code, HAMMER lacks cross-device link checks
in nlink and nrename.  I'll work on a patch for this one.

Cheers.