I have been trying to build and boot the last version available on linux-next. During the build I am being prompted with "has no CRC!" warnings for a bunch of modules.
Has a result I get the following lines in the Module.symvers: [qlambert@sloth linux-next]$ grep 0x00000 Module.symvers 0x00000000 phys_base vmlinux EXPORT_SYMBOL 0x00000000 memmove vmlinux EXPORT_SYMBOL 0x00000000 __copy_user_nocache vmlinux EXPORT_SYMBOL 0x00000000 __get_user_4 vmlinux EXPORT_SYMBOL 0x00000000 __put_user_4 vmlinux EXPORT_SYMBOL 0x00000000 __memcpy vmlinux EXPORT_SYMBOL 0x00000000 __fentry__ vmlinux EXPORT_SYMBOL 0x00000000 memset vmlinux EXPORT_SYMBOL 0x00000000 __sw_hweight64 vmlinux EXPORT_SYMBOL 0x00000000 __sw_hweight32 vmlinux EXPORT_SYMBOL 0x00000000 memcpy_mcsafe_unrolled vmlinux EXPORT_SYMBOL_GPL 0x00000000 memcpy vmlinux EXPORT_SYMBOL 0x00000000 copy_user_enhanced_fast_string vmlinux EXPORT_SYMBOL 0x00000000 clear_page vmlinux EXPORT_SYMBOL 0x00000000 __put_user_2 vmlinux EXPORT_SYMBOL 0x00000000 __get_user_2 vmlinux EXPORT_SYMBOL 0x00000000 copy_page vmlinux EXPORT_SYMBOL 0x00000000 copy_user_generic_string vmlinux EXPORT_SYMBOL 0x00000000 _copy_to_user vmlinux EXPORT_SYMBOL 0x00000000 ___preempt_schedule vmlinux EXPORT_SYMBOL 0x00000000 __memmove vmlinux EXPORT_SYMBOL 0x00000000 empty_zero_page vmlinux EXPORT_SYMBOL 0x00000000 __get_user_8 vmlinux EXPORT_SYMBOL 0x00000000 __put_user_8 vmlinux EXPORT_SYMBOL 0x00000000 _copy_from_user vmlinux EXPORT_SYMBOL 0x00000000 native_load_gs_index vmlinux EXPORT_SYMBOL 0x00000000 __memset vmlinux EXPORT_SYMBOL 0x00000000 ___preempt_schedule_notrace vmlinux EXPORT_SYMBOL 0x00000000 __put_user_1 vmlinux EXPORT_SYMBOL 0x00000000 __get_user_1 vmlinux EXPORT_SYMBOL 0x00000000 copy_user_generic_unrolled vmlinux EXPORT_SYMBOL If I ignore these and go on to boot the resulting kernel. I am left with: ERROR: Unable to find root device 'UUID=<omitted>' I am then dropped to a recovery shell where the keyboard is not answering. The UUID is valid and is the same being used when I boot the HEAD of the linux tree. In fact, I am sending this message from the same machine, running that very kernel. Prior to failing to find the root device, the kernel prints a series of messages for each of the above symbol: scsi_mod: no symbol version for <foo> scsi_mod: Unknown symbol <foo> (err -22) Therefore, I suspect that the missing CRC messages are linked to the issue. I have git bisected this behavior to the patch 784d5699edd. Simply reverting this patch results in different issues. The errors I am having due to no CRC are fixed but I receive another error at boot time: failed command: WRITE LOG DMA EXT I mostly asking for help as to what to do next. Could someone point me toward documentation that would help me understand and fix this issue?
