[issue1286] msdosfs crashes (when using rsync?)

[Simon 'corecode' Schubert (via DragonFly issue tracker)]

New submission from Simon 'corecode' Schubert <corecode at fs.ei.tum.de>:

Just now, twice, also on a fsck'ed system:

panic: msdosfs_reinsert: insertion failed 16

#2  0xc0195c35 in panic (fmt=0xe390b2c0 "msdosfs_reinsert: insertion failed %d")
    at /usr/src/sys/kern/kern_shutdown.c:800
        bootopt = 256
        newpanic = 1
        ap = 0xe3774a20 "\020"
        buf = "msdosfs_reinsert: insertion failed 16", '\0' <repeats 218 times>
#3  0xe3903a55 in msdosfs_reinsert (ip=0xe2bcd8a8, new_dirclust=994439,
new_diroffset=224)
    at /usr/src/sys/vfs/msdosfs/msdosfs_denode.c:225
        ilock = {tr_tok = 0xe390cd1c, tr_next = 0x0, tr_state = 1}
        error = 0
#4  0xe39093a0 in msdosfs_rename (ap=0xe3774acc) at
/usr/src/sys/vfs/msdosfs/msdosfs_vnops.c:1274
        new_dirclust = 994439
        new_diroffset = 0
        tdvp = (struct vnode *) 0xe7d3d968
        fvp = (struct vnode *) 0xe3a21ee8
        fdvp = (struct vnode *) 0xe7d3d968
        tvp = (struct vnode *) 0x0
        tcnp = (struct componentname *) 0xe3774b3c
        fcnp = (struct componentname *) 0xe3774b5c
        ip = (struct denode *) 0xe2bcd8a8
        xp = (struct denode *) 0x0
        dp = (struct denode *) 0xe2a2ad30
        zp = (struct denode *) 0xe2a2ad30
        toname = "ALBUMA~1JPG"
        oldname = "ALBUMA~1RST"
        from_diroffset = 1088
        to_diroffset = 224
        doingdirectory = 0
        cn = <value optimized out>
        pmp = (struct msdosfsmount *) 0xe32e91c8
        dotdotp = <value optimized out>
        bp = <value optimized out>

happend when calling rsync -aPv /dir/on/hammer /dir/on/msdosfs

crashdump available on request (mega huge one)

----------
messages: 6197
nosy: corecode
status: unread
title: msdosfs crashes (when using rsync?)

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<http://bugs.dragonflybsd.org/issue1286>
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