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SubjectRe: linux-next: Tree for Feb 8 (objtool: warnings: 5)
On Mon, Feb 08, 2021 at 11:30:59AM -0800, Randy Dunlap wrote:
> On 2/8/21 4:52 AM, Stephen Rothwell wrote:
> > 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)

> 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?

> 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?

--
Josh

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