The patch titled
Subject: scripts/checkstack.pl: automatically handle 32-bit and 64-bit mode for ARCH=x86
has been added to the -mm tree. Its filename is
scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86.patch
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------------------------------------------------------
From: Konstantin Khlebnikov <koct9i@xxxxxxxxx>
Subject: scripts/checkstack.pl: automatically handle 32-bit and 64-bit mode for ARCH=x86
This patch adds support for ARCH=x86 into checkstack.
commit ffee0de411fd4f7 ("x86: Default to ARCH=x86 to avoid overriding
CONFIG_64BIT") had merged ARCH=i386 and ARCH=x86_64 into one ARCH=x86.
checkstack.pl searches patterns of machine instructions which are usually
used for allocating stack frames. checkstalk.pl needs either i386 or
x86_64, x86 isn't enough:
$ make checkstack
objdump -d vmlinux $(find . -name '*.ko') | \
perl linux/scripts/checkstack.pl x86
wrong or unknown architecture "x86"
Signed-off-by: Konstantin Khlebnikov <koct9i@xxxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/checkstack.pl | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff -puN scripts/checkstack.pl~scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86 scripts/checkstack.pl
--- a/scripts/checkstack.pl~scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86
+++ a/scripts/checkstack.pl
@@ -52,14 +52,12 @@ my (@stack, $re, $dre, $x, $xs, $funcre)
#8000008a: 20 1d sub sp,4
#80000ca8: fa cd 05 b0 sub sp,sp,1456
$re = qr/^.*sub.*sp.*,([0-9]{1,8})/o;
- } elsif ($arch =~ /^i[3456]86$/) {
+ } elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
#c0105234: 81 ec ac 05 00 00 sub $0x5ac,%esp
- $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%esp$/o;
- $dre = qr/^.*[as][du][db] (%.*),\%esp$/o;
- } elsif ($arch eq 'x86_64') {
- # 2f60: 48 81 ec e8 05 00 00 sub $0x5e8,%rsp
- $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%rsp$/o;
- $dre = qr/^.*[as][du][db] (\%.*),\%rsp$/o;
+ # or
+ # 2f60: 48 81 ec e8 05 00 00 sub $0x5e8,%rsp
+ $re = qr/^.*[as][du][db] \$(0x$x{1,8}),\%(e|r)sp$/o;
+ $dre = qr/^.*[as][du][db] (%.*),\%(e|r)sp$/o;
} elsif ($arch eq 'ia64') {
#e0000000044011fc: 01 0f fc 8c adds r12=-384,r12
$re = qr/.*adds.*r12=-(([0-9]{2}|[3-9])[0-9]{2}),r12/o;
_
Patches currently in -mm which might be from koct9i@xxxxxxxxx are
revert-shmem-fix-faulting-into-a-hole-while-its-punched.patch
shmem-fix-faulting-into-a-hole-while-its-punched-take-2.patch
mm-fs-fix-pessimization-in-hole-punching-pagecache.patch
mm-memoryc-use-entry-=-access_oncepte-in-handle_pte_fault.patch
include-linux-mmdebugh-add-vm_warn_once.patch
shmem-fix-double-uncharge-in-__shmem_file_setup.patch
shmem-update-memory-reservation-on-truncate.patch
mm-catch-memory-commitment-underflow.patch
mm-catch-memory-commitment-underflow-fix.patch
lib-idr-fix-out-of-bounds-pointer-dereference.patch
scripts-checkstackpl-automatically-handle-32-bit-and-64-bit-mode-for-arch=x86.patch
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