From: Arnd Bergmann <arnd@arndb.de>
To: Ben Hutchings <ben.hutchings@codethink.co.uk>
Cc: y2038 Mailman List <y2038@lists.linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Nicholas Piggin <npiggin@gmail.com>,
Paul Mackerras <paulus@samba.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
Allison Randal <allison@lohutok.net>
Subject: Re: [Y2038] [PATCH 07/23] y2038: vdso: powerpc: avoid timespec references
Date: Thu, 21 Nov 2019 15:23:57 +0100 [thread overview]
Message-ID: <CAK8P3a1nRq98ngfKnR2Du+7_vOxSRFD9AyjHyUCsAtk_gLR_Uw@mail.gmail.com> (raw)
In-Reply-To: <4faa78cd0a86cf5d0aea9bb16d03145c5745450b.camel@codethink.co.uk>
On Wed, Nov 20, 2019 at 11:43 PM Ben Hutchings
<ben.hutchings@codethink.co.uk> wrote:
>
> On Fri, 2019-11-08 at 22:07 +0100, Arnd Bergmann wrote:
> [...]
> > --- a/arch/powerpc/kernel/vdso32/gettimeofday.S
> > +++ b/arch/powerpc/kernel/vdso32/gettimeofday.S
> > @@ -15,10 +15,8 @@
> > /* Offset for the low 32-bit part of a field of long type */
> > #if defined(CONFIG_PPC64) && defined(CONFIG_CPU_BIG_ENDIAN)
> > #define LOPART 4
> > -#define TSPEC_TV_SEC TSPC64_TV_SEC+LOPART
> > #else
> > #define LOPART 0
> > -#define TSPEC_TV_SEC TSPC32_TV_SEC
> > #endif
> >
> > .text
> > @@ -192,7 +190,7 @@ V_FUNCTION_BEGIN(__kernel_time)
> > bl __get_datapage@local
> > mr r9, r3 /* datapage ptr in r9 */
> >
> > - lwz r3,STAMP_XTIME+TSPEC_TV_SEC(r9)
> > + lwz r3,STAMP_XTIME_SEC+LOWPART(r9)
>
> "LOWPART" should be "LOPART".
>
Thanks, fixed both instances in a patch on top now. I considered folding
it into the original patch, but as it's close to the merge window I'd
rather not rebase it, and this way I also give you credit for finding the bug.
I'm surprised that the 0-day bot did not report this already.
Thanks fro the careful review!
Arnd
commit 1c11ca7a0584ddede5b8c93057b40d31e8a96d3d (HEAD)
Author: Arnd Bergmann <arnd@arndb.de>
Date: Thu Nov 21 15:19:49 2019 +0100
y2038: fix typo in powerpc vdso "LOPART"
The earlier patch introduced a typo, change LOWPART back to
LOPART.
Fixes: 176ed98c8a76 ("y2038: vdso: powerpc: avoid timespec references")
Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S
b/arch/powerpc/kernel/vdso32/gettimeofday.S
index a7180b0f4aa1..c8e6902cb01b 100644
--- a/arch/powerpc/kernel/vdso32/gettimeofday.S
+++ b/arch/powerpc/kernel/vdso32/gettimeofday.S
@@ -190,7 +190,7 @@ V_FUNCTION_BEGIN(__kernel_time)
bl __get_datapage@local
mr r9, r3 /* datapage ptr in r9 */
- lwz r3,STAMP_XTIME_SEC+LOWPART(r9)
+ lwz r3,STAMP_XTIME_SEC+LOPART(r9)
cmplwi r11,0 /* check if t is NULL */
beq 2f
@@ -266,7 +266,7 @@ __do_get_tspec:
* as a 32.32 fixed-point number in r3 and r4.
* Load & add the xtime stamp.
*/
- lwz r5,STAMP_XTIME_SEC+LOWPART(r9)
+ lwz r5,STAMP_XTIME_SEC+LOPART(r9)
lwz r6,STAMP_SEC_FRAC(r9)
addc r4,r4,r6
adde r3,r3,r5
next prev parent reply other threads:[~2019-11-21 14:31 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 21:02 [PATCH 00/23] y2038 cleanups Arnd Bergmann
2019-11-08 21:07 ` [PATCH 03/23] y2038: vdso: change timeval to __kernel_old_timeval Arnd Bergmann
2019-11-13 21:56 ` Thomas Gleixner
2019-11-08 21:07 ` [PATCH 07/23] y2038: vdso: powerpc: avoid timespec references Arnd Bergmann
2019-11-20 22:43 ` [Y2038] " Ben Hutchings
2019-11-21 14:23 ` Arnd Bergmann [this message]
2019-11-21 16:25 ` Christophe Leroy
2019-11-27 11:03 ` Arnd Bergmann
2019-12-02 12:55 ` Christophe Leroy
2019-12-02 14:03 ` Arnd Bergmann
2019-11-08 21:07 ` [PATCH 08/23] y2038: ipc: remove __kernel_time_t reference from headers Arnd Bergmann
2019-11-20 22:49 ` [Y2038] " Ben Hutchings
2019-11-21 14:28 ` Arnd Bergmann
2019-11-08 21:07 ` [PATCH 09/23] y2038: stat: avoid 'time_t' in 'struct stat' Arnd Bergmann
2019-11-08 21:12 ` [PATCH 12/23] y2038: syscalls: change remaining timeval to __kernel_old_timeval Arnd Bergmann
2019-11-11 12:44 ` Christian Brauner
2019-11-13 22:39 ` Rafael J. Wysocki
2019-11-13 21:40 ` [PATCH 00/23] y2038 cleanups Arnd Bergmann
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