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Jeff Rizzo wrote:
> I just got the following panic, after trying to umount my lfs work
> partition.  I had noticed an oddness with a build, and wanted to
> fsck_lfs it.
>
> I've been using this scratch partition with LFS for a while, with good
> success;  however, I just converted this machine to using wedges a few
> days ago...  Should I send-pr this?  The system is running NetBSD/amd64=

> 4.99.1 from about a week ago...
>
> panic: kernel diagnostic assertion "sc->sc_dk.dk_openmask !=3D 0" faile=
d:
> file "/usr/src/sys/dev/dkwedge/dk.c", line 949
> Stopped in pid 510.1 (lfs_cleanerd) at  netbsd:cpu_Debugger+0x5:       =

> leave
> db{1}> bt
> cpu_Debugger() at netbsd:cpu_Debugger+0x5
> panic() at netbsd:panic+0x1f5
> __assert() at netbsd:__assert+0x21
> dkclose() at netbsd:dkclose+0x161
> spec_close() at netbsd:spec_close+0xed
> VOP_CLOSE() at netbsd:VOP_CLOSE+0x2a
> vn_close() at netbsd:vn_close+0x4d
> closef() at netbsd:closef+0x182
> syscall_plain() at netbsd:syscall_plain+0x132
> uvm_fault(0xffff800023f2a2c0, 0x0, 1) -> e
> kernel: page fault trap, code=3D0
> Faulted in DDB; continuing...
> db{1}>
>
>  =20

Interesting note:  this panic is repeatable - umounting an lfs on a
wedge triggers this assert consistently.  However, if I first kill
lfs_cleanerd, I can umount without triggering it...  I may look into
this more once I've had some sleep.

+j



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