On Mon, Sep 5, 2011 at 14:59, Jan Kara <jack@xxxxxxx> wrote: > Something has corrupted your buffer head structure in memory (and we then > infinitely looped in __getblk_slow()). bh->b_blocknr has been 0xC139000B9 > which it should have been 0x139000B9 (5th byte has been changed from 0x00 > to 0x0C). It might be a hw fault, buggy driver, or some other bug - hard to > say. You might want to run memtest for some time, or enable some kernel debug > options (DEBUG_PAGEALLOC, DEBUG_SLAB) which might catch the code causing > corruption (this assumes it's at least occasionally reproducible and your > are willing to take the performance hit)... Thanks for your reply and sorry for the slow response. As my system also experienced lockups from time to time I performed an extensive memtest run, which actually brought up sporadic memory corruption (some bits flipping to zero) after 20 hours or so. I swapped CPU, mainboard and RAM and have not experienced any problems since then, so I guess this was the cause of the issue. Thanks, Thilo -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
