(2013/10/02 21:03), Michael Holzheu wrote:
Hello Alexey,Looks like the following commit broke mmap for /proc/vmcore: commit c4fe24485729fc2cbff324c111e67a1cc2f9adea Author: Alexey Dobriyan <adobri...@gmail.com> Date: Tue Aug 20 22:17:24 2013 +0300 sparc: fix PCI device proc file mmap(2) Because /proc/vmcore (fs/proc/vmcore.c) does not implement the get_unmapped_area() fops function mmap now always returns EIO. Michael
I confirmed the bug on v3.12-rc3. According to makedumpfile's log, mmap failed on /proc/vmcore. mem_map (271) mem_map : ffffea001da40000 pfn_start : 878000 pfn_end : 880000 Kernel can't mmap vmcore, using reads. STEP [Excluding unnecessary pages] : 1.268799 seconds STEP [Excluding unnecessary pages] : 1.268756 seconds STEP [Copying data ] : 44.847924 seconds Writing erase info... I'll post a patch later. -- Thanks. HATAYAMA, Daisuke -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
