** Also affects: linux-ti-omap4 (Ubuntu Natty)
Importance: High
Status: Confirmed
--
instabilities with highmem activated
https://bugs.launchpad.net/bugs/633227
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Status in “linux-ti-omap4” package in Ubuntu: Confirmed
Status in “linux-ti-omap4” source package in Maverick: Fix Released
Status in “linux-ti-omap4” source package in Natty: Confirmed
Bug description:
Seen on Maverick: 2.6.35-903.9
HW: pandaboard ES2.0
Using following kernel memory allocation (in bootargs):
mem=4...@0x80000000 mem=5...@0xa0000000
Instabilities have been observed in 2 different ways:
1) The following memtester test:
sudo memtester -p 0xb0000000 120
Fails in few seconds with a "illegal instruction” error.
Then various behaviors can be seen: the UI can freeze, shell commands be
unavailable. The systems works well again after a reboot.
2) By doing a native build of a kernel package (with file-system on SD card,
and kernel sources on an NFS mount):
After 15mins to 1h30, a "compiler error: bus error" triggers and the build
stops (and the platform hangs).
This issue cannot be reproduced if using mem=4...@0x80000000 mem=2...@0xa000000.
This issue cannot be reproduced with highmen deactivated from the kernel config.
This issue can be reproduced with 'nosmp' in kernel command line.
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