Hello list,

since updating the current installation on my trusty Thinkpad T43 I
keep getting occasional crashes like the following:

#1  0xc0c23a03 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:364
#2  0xc0c23f3d in vpanic (fmt=<value optimized out>, ap=<value optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:757
#3  0xc0c23f5b in panic (fmt=0xc1590fad "ffs_blkfree_cg: freeing free frag")
    at /usr/src/sys/kern/kern_shutdown.c:688
#4  0xc0eb467a in ffs_blkfree_cg (ump=0xc7e11000, fs=0xc7e120d4,
    devvp=<value optimized out>, bno=32075253, size=<value optimized out>,
    inum=<value optimized out>, dephd=<value optimized out>)
    at /usr/src/sys/ufs/ffs/ffs_alloc.c:2237
#5  0xc0eb0b27 in ffs_blkfree (ump=0x0, fs=0x0, devvp=0xc7abdc34,
    bno=32075253, size=4096, vtype=<value optimized out>,
    dephd=<value optimized out>) at /usr/src/sys/ufs/ffs/ffs_alloc.c:2343
#6  0xc0edea9a in freework_freeblock (freework=<value optimized out>)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:7749
#7  0xc0ed1f85 in handle_workitem_freeblocks (freeblks=0xc76a5d00, flags=512)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:7803
#8  0xc0eda341 in process_worklist_item (mp=<value optimized out>)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:1799
#9  0xc0ec5d5f in softdep_process_worklist (mp=0xc7d8fd20, full=0)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:1593
#10 0xc0eca3ee in softdep_flush (addr=0xc7d8fd20)
    at /usr/src/sys/ufs/ffs/ffs_softdep.c:1395
#11 0xc0be7c9e in fork_exit (callout=0xc0eca310 <softdep_flush>)
    at /usr/src/sys/kern/kern_fork.c:1010
#12 0xc1162d50 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:287

I wonder if this might be a bug in FFS or a related subsystem, or my
hard disk dying. smartctl lists several READ DMA und WRITE DMA related
Appears to be related to Bug 132960, which might celebrate it's 10th
birthday soon. ;)

Any ideas?

Best wishes,
Christian Walther
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