Re: Panic: vrelel: bad ref count (9.99.54)

[Andrew Doran <ad%netbsd.org@localhost>]

Hi Yorick.

On Mon, Apr 06, 2020 at 11:16:37PM +0200, Yorick Hardy wrote:

>    Crash version 9.99.54, image version 9.99.54.
>    crash: _kvm_kvatop(0)
>    Kernel compiled without options LOCKDEBUG.
>    System panicked: vrelel: bad ref count
>    Backtrace from time of crash is available.
>    crash> bt
>    _KERNEL_OPT_NAGR() at 0
>    ?() at 7f7ff7ecf000
>    sys_reboot() at sys_reboot
>    vpanic() at vpanic+0x181
>    vtryrele() at vtryrele
>    vcache_dealloc() at vcache_dealloc
>    uvm_unmap_detach() at uvm_unmap_detach+0x76
>    uvm_unmap1() at uvm_unmap1+0x4e
>    uvm_mremap() at uvm_mremap+0x36b
>    sys_mremap() at sys_mremap+0x68
>    syscall() at syscall+0x227
>    --- syscall (number 411) ---
>    7f0af7842e9a:

Were you running anything noteworthy at the time?  There is a very good
chance that is fixed by revision 1.217 of src/sys/kern/vfs_lookup.c.

Thanks,
Andrew