[Bug 224176] Lock Order Reversals somewhere in VFS/UFS

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224176

Wolfram Schneider <wosch at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |wosch at FreeBSD.org

--- Comment #5 from Wolfram Schneider <wosch at FreeBSD.org> ---
I must admit that these LOR kernel message looks scary if you see them for the
first time.

But if these messages are mostly harmless, why doesn't we say this?

My proposed change request:

instead:

lock order reversal:
 1st 0xfffffe0000cbf2c0 bufwait (bufwait) @
/home/projects/freebsd/sys/kern/vfs_bio.c:3564
 2nd 0xfffff8001c445800 dirhash (dirhash) @
/home/projects/freebsd/sys/ufs/ufs/ufs_dirhash.c:289
stack backtrace:

we display

lock order reversal (mostly harmless, see
https://www.freebsd.org/doc/handbook/freebsd-glossary.html#lor-glossary )
 1st 0xfffffe0000cbf2c0 bufwait (bufwait) @
/home/projects/freebsd/sys/kern/vfs_bio.c:3564
 2nd 0xfffff8001c445800 dirhash (dirhash) @
/home/projects/freebsd/sys/ufs/ufs/ufs_dirhash.c:289
stack backtrace:

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