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Message-ID: <20210104232824.GQ3579531@ZenIV.linux.org.uk>
Date: Mon, 4 Jan 2021 23:28:24 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the vfs tree
On Tue, Jan 05, 2021 at 09:36:16AM +1100, Stephen Rothwell wrote:
> Hi all,
>
> After merging the vfs tree, today's linux-next build (x86_64 allmodconfig)
> failed like this:
>
> In file included from arch/x86/include/asm/elf.h:8,
> from include/linux/elf.h:6,
> from include/linux/elfcore-compat.h:5,
> from fs/compat_binfmt_elf.c:17:
> fs/binfmt_elf.c: In function 'fill_thread_core_info':
> arch/x86/include/asm/elfcore-compat.h:23:20: error: 'TIF_X32' undeclared (first use in this function)
> 23 | (test_thread_flag(TIF_X32) \
> | ^~~~~~~
> include/linux/thread_info.h:116:45: note: in definition of macro 'test_thread_flag'
> 116 | test_ti_thread_flag(current_thread_info(), flag)
> | ^~~~
> fs/binfmt_elf.c:1744:5: note: in expansion of macro 'PRSTATUS_SIZE'
> 1744 | PRSTATUS_SIZE, &t->prstatus);
> | ^~~~~~~~~~~~~
> arch/x86/include/asm/elfcore-compat.h:23:20: note: each undeclared identifier is reported only once for each function it appears in
> 23 | (test_thread_flag(TIF_X32) \
> | ^~~~~~~
> include/linux/thread_info.h:116:45: note: in definition of macro 'test_thread_flag'
> 116 | test_ti_thread_flag(current_thread_info(), flag)
> | ^~~~
> fs/binfmt_elf.c:1744:5: note: in expansion of macro 'PRSTATUS_SIZE'
> 1744 | PRSTATUS_SIZE, &t->prstatus);
> | ^~~~~~~~~~~~~
>
> Caused by commit
>
> 5a9b7f382248 ("binfmt_elf: partially sanitize PRSTATUS_SIZE and SET_PR_FPVALID")
>
> or maybe commit
>
> 9866fcab1c65 ("[elfcore-compat][amd64] clean PRSTATUS_SIZE/SET_PR_FPVALID up properly")
Arrgh... It's 8d71d2bf6efe ("x86: Reclaim TIF_IA32 and TIF_X32") in mainline, actually.
Mea culpa ;-/
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