linux-kernel - Re: linux-next: Tree for May 14 (objtool 2/2)

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Date:   Thu, 28 May 2020 10:44:04 -0500
From:   Josh Poimboeuf <jpoimboe@...hat.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Kees Cook <keescook@...omium.org>
Subject: Re: linux-next: Tree for May 14 (objtool 2/2)

On Thu, May 14, 2020 at 09:04:36AM -0700, Randy Dunlap wrote:
> On 5/14/20 4:07 AM, Stephen Rothwell wrote:
> > Hi all,
> > 
> > Changes since 20200512:
> > 
> 
> on x86_64:
> 
> drivers/ide/ide-tape.o: warning: objtool: ide_tape_discard_merge_buffer.constprop.7()+0x4e: unreachable instruction
> drivers/scsi/sd.o: warning: objtool: sd_pr_clear()+0x1e: unreachable instruction
> drivers/scsi/sd_zbc.o: warning: objtool: sd_zbc_update_wp_offset_workfn()+0xec: unreachable instruction
> drivers/target/target_core_xcopy.o: warning: objtool: target_xcopy_do_work()+0xdd6: unreachable instruction
> 
> 
> randconfig file is attached.

Kees,

More UBSAN_TRAP fun.  This randconfig has:

CONFIG_UBSAN_TRAP=y
CONFIG_UBSAN_ALIGNMENT=y
# CONFIG_COMPILE_TEST is not set

-- 
Josh