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more(?) failed assertions in vfs_bio.c



Saw this trying to copy new kernels from the MSDOS partition on the CF card
to the FFS partion on the Jornada 720 (a simple cp from /mnt/msdos to /).
panic: kernel diagnostic assertion "bp->b_vp == NULL || bp->b_vp->v_tag
!= VT_UFS || ISSET(bp->b_flags, B_COWDONE)" failed: file 
"../../../../kern/vfs_bio.c", line 888
Hand-copied backtrace:
 __kernassert
 bdwrite
 msdosfs_update
 msdosfs_inactive
 VOP_INACTIVE
 vrelel
 vn_close
 closef
 fd_close
 syscall_plain
It looks to be dead-reproducible... happened in 4.99.65 and looks to be
the same failure in .67 from earlier today. This sounds like one of the
panics Manuel was chasing, but I'm running out of time for the night so
I thought I'd lob this out here anyway. Is this an already-reported
issue? Should I PR it? Dig into it more?
Machine is hpcarm, though I suspect that doesn't matter.
Thanks!
--rafal


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