Re: Lock order reversal errors during boot

Hi!

> I am seeing 'lock order reversal' errors during boot on 11-CURRENT - 
> r298793.  A sample error:
> 
> lock order reversal:
>   1st 0xfffff8011280d068 ufs (ufs) _at_ /usr/src/sys/kern/vfs_subr.c:2498
>   2nd 0xfffffe01ca539400 bufwait (bufwait) _at_ 
> /usr/src/sys/ufs/ffs/ffs_vnops.c:263
>   3rd 0xfffff80112a23b78 ufs (ufs) _at_ /usr/src/sys/kern/vfs_subr.c:2498
> stack backtrace:
> #0 0xffffffff80a94bf0 at witness_debugger+0x70
> #1 0xffffffff80a94ae4 at witness_checkorder+0xe54
> #2 0xffffffff80a0fdd6 at __lockmgr_args+0x4d6
> #3 0xffffffff80ce9626 at ffs_lock+0xa6
> [...snip...]
> 
> I'm not sure if this is even something I should report, but better safe 
> than sorry, yes?

Yes, and there's even a page to compare your LOR against other ones:

http://sources.zabbadoz.net/freebsd/lor.html

Can you try if you find your LOR there ? If not, can you add it
to that page ?

-- 
pi_at_opsec.eu            +49 171 3101372                         4 years to go !