On 2003/01/05-00:25:17 leafy wrote:

>lock order reversal
>Jan  5 00:19:15 leafy kernel: 1st 0xc26b05c0 process lock (process lock)
>@/usr/src/sys/kern/kern_descrip.c:2099 Jan  5 00:19:15 leafy kernel: 2nd
>0xc2667e34 filedesc structure (filedesc structure) @
>/usr/src/sys/kern/kern_descrip.c:2106
>
>The kernel is only about 40 mins old.

/me too.

updated world + kernel sometime yesterday (2003/01/05) and was about
updating linux_base when a kernel panic occured.
# portupgrade linux_base
...
panic: lockmgr: pid 3171, not exclusive lock holder
(sorry, i don't have more details :(

after rebooting i got this on bootup:
Mounting root from ufs:/dev/ad0s3a
WARNING: / was not properly dismounted
lock order reversal
 1st 0xc340f068 process lock (process lock) @
/usr/src/sys/kern/kern_descrip.c:2099
 2nd 0xc33e9634 filedesc structure (filedesc structure) @
/usr/src/sys/kern/kern_descrip.c:2106


i got another LOR when starting up Quake2 (but only once every boot):
acquiring duplicate lock of same type: "pcm channel"
 1st pcm0:record:0 @ /usr/src/sys/dev/sound/pcm/sound.c:191
 2nd pcm0:play:0 @ /usr/src/sys/dev/sound/pcm/sound.c:191


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