Re: [microblaze-uclinux] BUG: scheduling while atomic: (Kernel 2.6)

["Brettschneider Falk" <fbrettschneider@xxxxxxxxxxxxxxx>]

Hi,

is it necessary/advisable to recompile a kernel-2.4 user app with the Linux headers and libs (pthread, uClib) of the kernel-2.6?

The background is, I managed it to replace the 2.4 kernel with a 2.6 one, tentatively. Now romfs/etc/rc starts the user app from /mnt which is a mounted JFFS2 filesystem. Note: that userapp.bin hasn't been touched since the 2.4 times.
That userapp.bin starts and runs, but not very stable although I use petalinux-v0.20-rc3 with the latest 2 patches for the scheduling-while-atomic bug. And it doesn't matter if preempt is on or off. After a while (randomly a few seconds till a few minutes) under heavy IRQ load the whole thing goes bad with randomly different effects. Sometimes the whole Linux stops, or just one thread of the user app is deadlocked.

I just wonder if the reason is that I haven't recompiled and relinked the user app against the 2.6 headers and libs, or if there are still general problems with the quite young 2.6.

Furthermore my new 2.6 kernel has also TCP enabled. If a PC tries to connect to my userapp.bin, Linux or the user app hangs. Though with exactly the same user app, I don't see such bug with my old 2.4 kernel with TCP on.

Any idea is appreciated. :-)

Cheers, F@lk

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