Slab coruption and oops with 2.6.1-mm4
Quoted 5 lines · Calin
Then usual oops but *before that* something which hasn't happened before. Slab corruption: start=c57c2000, len=4096
000: 6e 72 6d 71 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
Is that reproducable? The selftest code in slab noticed a change in a buffer that is not in use: All values should be 0x6b, but the first 4 bytes are different. Could you try to boot with CONFIG_DEBUG_PAGEALLOC enabled? Perhaps that identifies who corrupts the page. Unfortunately it can't detect DMA writes.
Quoted 2 lines
------------ kernel BUG at
include/linux/mm.h:275!
put_page_testzero noticed that the page count was already 0. It seems that someone uses memory that was already freed.
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Manfred