Re: linux-next: Tree for Feb 8 (objtool: warnings: 5)

On 2/8/21 1:21 PM, Josh Poimboeuf wrote:

On Mon, Feb 08, 2021 at 11:30:59AM -0800, Randy Dunlap wrote:

quoted

On 2/8/21 4:52 AM, Stephen Rothwell wrote:

quoted

Hi all,

Changes since 20210205:

on x86_64:

objtool warnings: (from 3 different randconfig builds)

drivers/input/touchscreen/elants_i2c.o: warning: objtool: elants_i2c_initialize() falls through to next function elants_i2c_resume()

Randy, can you share the .o?  (you may need to gzip it, still waiting on
corporate IT to allow me to receive .o files)

Sure, no problem. It's attached.

quoted

fs/select.o: warning: objtool: do_sys_poll()+0x8e9: call to __ubsan_handle_sub_overflow() with UACCESS enabled
lib/iov_iter.o: warning: objtool: iovec_from_user.part.12()+0x2db: call to __ubsan_handle_add_overflow() with UACCESS enabled

Peter, we need the patch to prevent UBSAN with gcc7?

quoted

vmlinux.o: warning: objtool: do_machine_check()+0x7ee: call to queue_task_work() leaves .noinstr.text section
vmlinux.o: warning: objtool: lock_is_held_type()+0x107: call to warn_bogus_irq_restore() leaves .noinstr.text section

Peter?

thanks.
-- 
~Randy