On Sat, May 08, 2004 at 09:18:22AM +0200, Ralf Baechle wrote:
> On Fri, May 07, 2004 at 06:10:31PM -0700, Jun Sun wrote:
>
> > I got a bunch of segfaults which are due to HAS_LLSCD cpu operating
> > on a semaphore which is aligned along 4-byte boundary instead of the
> > desired 8-byte boundary.
>
> Dare to give a complete version number? I've dumped 2.4 on all my systems
> months ago and never have seen this problem except with slab debugging
> enabled - but that side effect of slab debugging is known since years.
>
Kernel is yesterday's CVS. gcc is 3.3.1. config is ddb5477. No
additional patch. See below.
In any case if you look at the uart code you should see there
is a problem already. 'state' is allocated through kmalloc() which only
gives 4-byte alignement. The only puzzling thing is that why this
did not show up before. Maybe kmalloc() was giving 8-byte aligned block?
VERSION = 2
PATCHLEVEL = 6
SUBLEVEL = 6
EXTRAVERSION =-rc3
NAME=Zonked Quokka
[jsun@orion linux]$ mipsel-linux-gcc -v
Reading specs from /opt/mvl-installs/pe040201/montavista/pro/devkit/mips/fp_le/bin/../lib/gcc-lib/mipsel-hardhat-linux/3.3.1/specs
Configured with: ../configure --host=i686-pc-linux-gnu --target=mipsel-hardhat-linux --prefix=/opt/montavista/devkit/mips/fp_le --exec-prefix=/opt/montavista/devkit/mips/fp_le --bindir=/opt/montavista/devkit/mips/fp_le/bin --sbindir=/opt/montavista/devkit/mips/fp_le/sbin --sysconfdir=/opt/montavista/devkit/mips/fp_le/etc --datadir=/opt/montavista/devkit/mips/fp_le/share --includedir=/opt/montavista/devkit/mips/fp_le/include --libdir=/opt/montavista/devkit/mips/fp_le/lib --libexecdir=/opt/montavista/devkit/mips/fp_le/libexec --localstatedir=/opt/montavista/devkit/mips/fp_le/var --sharedstatedir=/opt/montavista/devkit/mips/fp_le/share --mandir=/opt/montavista/devkit/mips/fp_le/man --infodir=/opt/montavista/devkit/mips/fp_le/info --program-transform-name=s,^,mips_fp_le-, --enable-cross --with-sysroot=/opt/montavista/devkit/mips/fp_le/target --enable-shared --enable-languages=c,c++ --enable-__cxa_atexit --enable-threads=posix --disable-multilib --with-gxx-include-dir='$'{gcc_tooldir}/../target/usr/include/c++/3.3.1
Thread model: posix
gcc version 3.3.1 (MontaVista 3.3.1-3.0.10.0300532 2003-12-24)
Jun
