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SubjectRe: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.25-1

* Rui Nuno Capela <> wrote:

> 1) Almost everytime the P4/SMP box locks up while unloading the ALSA
> modules e.g.on shutdown. This has been an issue for quite some time on
> the latest RT patches, not exclusive to RT-V0.7.26-3. Probably it
> started since the merge into -mm3, but not sure.

hm, the syslog you sent suggests that it's the 2.6.10-rc1-mm3-RT-V0.7.24
kernel that crashed:

Nov 11 12:39:46 lambda kernel: EFLAGS: 00010083 (2.6.10-rc1-mm3-RT-V0.7.24)

not -V0.7.26-3. The particular rmmod crash you got:

Nov 11 12:39:46 lambda kernel: [<c013b72c>] kmem_cache_free+0x4a/0xc7 (8)
Nov 11 12:39:46 lambda kernel: [kobject_cleanup+142/144] kobject_cleanup+0x8e/0x90 (12)
Nov 11 12:39:46 lambda kernel: [<c01b0f08>] kobject_cleanup+0x8e/0x90 (12)

seems to be quite related to one of the fixes that -V0.7.25 includes:

- added upstream fix for kobject related crash, pointed out by Shane

so ... unless you got similar crashes with -V0.7.25 or later kernels
(but no syslog traces), please try the latest one (-V0.7.26-4), does
that one crash in rmmod too?

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