On Friday 22 August 2008, Geert Uytterhoeven wrote: > I gave AxFS a try on PS3 (ppc64, always use big-endian 64-bit for testing new > code ;-). > When mounting the image, I got the crash below: > > | attempt to access beyond end of device > | loop0: rw=0, want=4920, limit=4912 > | Unable to handle kernel paging request for data at address 0x00000028 Offset 0x28 is buffer_head->b_data, so it seems like sb_bread returns NULL, which it does for out of range block numbers. I guess axfs_copy_block should check for that condition, as it can happen on malicious file system images. I agree that this is likely to get caused by an endianess bug. A good help for finding endianess bugs is to use __be64 like data types everywhere and test with sparse -D__CHECK_ENDIAN__. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
