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14.3.1. Linux crashes randomly

On my board, Linux crashes randomly or has random exceptions (especially floating point exceptions if it is a PowerPC processor). Why?

Quite likely your SDRAM initialization is bad. See UBootCrashAfterRelocation for more information.

On a PowerPC, the instructions beginning with 0xFF are floating point instructions. When your memory subsystem fails, the PowerPC is reading bad values (0xFF) and thus executing illegal floating point instructions.
14.3. Linux 1. Abstract 14.3.2. Linux crashes when uncompressing the kernel
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