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📄 Kbuild.include	15,468 B	[ EDIT ] \| [ DEL ]
📄 Kconfig.include	1,173 B	[ EDIT ] \| [ DEL ]
📄 Lindent	502 B	[ EDIT ] \| [ DEL ]
📄 Makefile	1,741 B	[ EDIT ] \| [ DEL ]
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📄 Makefile.kcov	319 B	[ EDIT ] \| [ DEL ]
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📄 Makefile.modsign	897 B	[ EDIT ] \| [ DEL ]
📄 Makefile.ubsan	951 B	[ EDIT ] \| [ DEL ]
📄 adjust_autoksyms.sh	3,010 B	[ EDIT ] \| [ DEL ]
📄 asn1_compiler	28,008 B	[ EDIT ] \| [ DEL ]
📄 asn1_compiler.c	36,391 B	[ EDIT ] \| [ DEL ]
📄 bin2c	7,024 B	[ EDIT ] \| [ DEL ]
📄 bin2c.c	743 B	[ EDIT ] \| [ DEL ]
📄 bloat-o-meter	3,313 B	[ EDIT ] \| [ DEL ]
📄 bootgraph.pl	6,426 B	[ EDIT ] \| [ DEL ]
📄 bpf_doc.py	25,515 B	[ EDIT ] \| [ DEL ]
📄 cc-can-link.sh	166 B	[ EDIT ] \| [ DEL ]
📄 check_00index.sh	1,333 B	[ EDIT ] \| [ DEL ]
📄 check_extable.sh	5,049 B	[ EDIT ] \| [ DEL ]
📄 checkincludes.pl	1,984 B	[ EDIT ] \| [ DEL ]
📄 checkkconfigsymbols.py	15,895 B	[ EDIT ] \| [ DEL ]
📄 checkpatch.pl	197,186 B	[ EDIT ] \| [ DEL ]
📄 checkstack.pl	5,303 B	[ EDIT ] \| [ DEL ]
📄 checksyscalls.sh	7,094 B	[ EDIT ] \| [ DEL ]
📄 checkversion.pl	1,938 B	[ EDIT ] \| [ DEL ]
📄 clang-version.sh	635 B	[ EDIT ] \| [ DEL ]
📄 cleanfile	3,538 B	[ EDIT ] \| [ DEL ]
📄 cleanpatch	5,178 B	[ EDIT ] \| [ DEL ]
📄 coccicheck	7,407 B	[ EDIT ] \| [ DEL ]
📄 config	4,635 B	[ EDIT ] \| [ DEL ]
📄 conmakehash	11,616 B	[ EDIT ] \| [ DEL ]
📄 conmakehash.c	6,128 B	[ EDIT ] \| [ DEL ]
📄 const_structs.checkpatch	964 B	[ EDIT ] \| [ DEL ]
📄 decode_stacktrace.sh	3,834 B	[ EDIT ] \| [ DEL ]
📄 decodecode	2,525 B	[ EDIT ] \| [ DEL ]
📄 depmod.sh	1,119 B	[ EDIT ] \| [ DEL ]
📄 diffconfig	3,821 B	[ EDIT ] \| [ DEL ]
📄 documentation-file-ref-check	3,548 B	[ EDIT ] \| [ DEL ]
📄 export_report.pl	4,654 B	[ EDIT ] \| [ DEL ]
📄 extract-cert	11,616 B	[ EDIT ] \| [ DEL ]
📄 extract-cert.c	3,541 B	[ EDIT ] \| [ DEL ]
📄 extract-ikconfig	1,734 B	[ EDIT ] \| [ DEL ]
📄 extract-module-sig.pl	3,742 B	[ EDIT ] \| [ DEL ]
📄 extract-sys-certs.pl	3,832 B	[ EDIT ] \| [ DEL ]
📄 extract-vmlinux	1,725 B	[ EDIT ] \| [ DEL ]
📄 extract_xc3028.pl	45,665 B	[ EDIT ] \| [ DEL ]
📄 faddr2line	6,303 B	[ EDIT ] \| [ DEL ]
📄 file-size.sh	86 B	[ EDIT ] \| [ DEL ]
📄 find-unused-docs.sh	1,310 B	[ EDIT ] \| [ DEL ]
📄 gcc-goto.sh	530 B	[ EDIT ] \| [ DEL ]
📄 gcc-ld	711 B	[ EDIT ] \| [ DEL ]
📄 gcc-plugin.sh	1,090 B	[ EDIT ] \| [ DEL ]
📄 gcc-version.sh	857 B	[ EDIT ] \| [ DEL ]
📄 gcc-x86_32-has-stack-protector.sh	173 B	[ EDIT ] \| [ DEL ]
📄 gcc-x86_64-has-stack-protector.sh	198 B	[ EDIT ] \| [ DEL ]
📄 gen_initramfs_list.sh	8,224 B	[ EDIT ] \| [ DEL ]
📄 get_dvb_firmware	25,824 B	[ EDIT ] \| [ DEL ]
📄 get_maintainer.pl	67,369 B	[ EDIT ] \| [ DEL ]
📄 gfp-translate	1,752 B	[ EDIT ] \| [ DEL ]
📄 headerdep.pl	3,582 B	[ EDIT ] \| [ DEL ]
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📄 headers_install.sh	1,397 B	[ EDIT ] \| [ DEL ]
📄 insert-sys-cert.c	9,084 B	[ EDIT ] \| [ DEL ]
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📄 kernel-doc	62,560 B	[ EDIT ] \| [ DEL ]
📄 ld-version.sh	269 B	[ EDIT ] \| [ DEL ]
📄 leaking_addresses.pl	13,160 B	[ EDIT ] \| [ DEL ]
📄 link-vmlinux.sh	9,176 B	[ EDIT ] \| [ DEL ]
📄 makelst	808 B	[ EDIT ] \| [ DEL ]
📄 markup_oops.pl	8,273 B	[ EDIT ] \| [ DEL ]
📄 mkcompile_h	2,628 B	[ EDIT ] \| [ DEL ]
📄 mkmakefile	1,218 B	[ EDIT ] \| [ DEL ]
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📄 module-common.lds	901 B	[ EDIT ] \| [ DEL ]
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📄 namespace.pl	13,358 B	[ EDIT ] \| [ DEL ]
📄 objdiff	2,917 B	[ EDIT ] \| [ DEL ]
📄 parse-maintainers.pl	4,646 B	[ EDIT ] \| [ DEL ]
📄 patch-kernel	10,185 B	[ EDIT ] \| [ DEL ]
📄 pnmtologo	15,720 B	[ EDIT ] \| [ DEL ]
📄 pnmtologo.c	12,197 B	[ EDIT ] \| [ DEL ]
📄 profile2linkerlist.pl	410 B	[ EDIT ] \| [ DEL ]
📄 prune-kernel	708 B	[ EDIT ] \| [ DEL ]
📄 recordmcount	24,008 B	[ EDIT ] \| [ DEL ]
📄 recordmcount.c	17,062 B	[ EDIT ] \| [ DEL ]
📄 recordmcount.h	16,772 B	[ EDIT ] \| [ DEL ]
📄 recordmcount.pl	18,709 B	[ EDIT ] \| [ DEL ]
📄 setlocalversion	4,013 B	[ EDIT ] \| [ DEL ]
📄 show_delta	3,076 B	[ EDIT ] \| [ DEL ]
📄 sign-file	15,768 B	[ EDIT ] \| [ DEL ]
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📄 spelling.txt	25,611 B	[ EDIT ] \| [ DEL ]
📄 sphinx-pre-install	14,378 B	[ EDIT ] \| [ DEL ]
📄 split-man.pl	600 B	[ EDIT ] \| [ DEL ]
📄 stackdelta	1,883 B	[ EDIT ] \| [ DEL ]
📄 stackusage	794 B	[ EDIT ] \| [ DEL ]
📄 subarch.include	641 B	[ EDIT ] \| [ DEL ]
📄 tags.sh	9,789 B	[ EDIT ] \| [ DEL ]
📄 test_fortify.sh	2,281 B	[ EDIT ] \| [ DEL ]
📄 unifdef	36,192 B	[ EDIT ] \| [ DEL ]
📄 unifdef.c	35,637 B	[ EDIT ] \| [ DEL ]
📄 ver_linux	2,747 B	[ EDIT ] \| [ DEL ]
📄 xen-hypercalls.sh	386 B	[ EDIT ] \| [ DEL ]
📄 xz_wrap.sh	562 B	[ EDIT ] \| [ DEL ]

[ CLOSE ]

EDIT: checkstack.pl

#!/usr/bin/perl
# SPDX-License-Identifier: GPL-2.0

#	Check the stack usage of functions
#
#	Copyright Joern Engel <joern@lazybastard.org>
#	Inspired by Linus Torvalds
#	Original idea maybe from Keith Owens
#	s390 port and big speedup by Arnd Bergmann <arnd@bergmann-dalldorf.de>
#	Mips port by Juan Quintela <quintela@mandrakesoft.com>
#	IA64 port via Andreas Dilger
#	Arm port by Holger Schurig
#	sh64 port by Paul Mundt
#	Random bits by Matt Mackall <mpm@selenic.com>
#	M68k port by Geert Uytterhoeven and Andreas Schwab
#	AArch64, PARISC ports by Kyle McMartin
#	sparc port by Martin Habets <errandir_news@mph.eclipse.co.uk>
#
#	Usage:
#	objdump -d vmlinux | scripts/checkstack.pl [arch]
#
#	TODO :	Port to all architectures (one regex per arch)

use strict;

# check for arch
#
# $re is used for two matches:
# $& (whole re) matches the complete objdump line with the stack growth
# $1 (first bracket) matches the size of the stack growth
#
# $dre is similar, but for dynamic stack redutions:
# $& (whole re) matches the complete objdump line with the stack growth
# $1 (first bracket) matches the dynamic amount of the stack growth
#
# use anything else and feel the pain ;)
my (@stack, $re, $dre, $x, $xs, $funcre);
{
	my $arch = shift;
	if ($arch eq "") {
		$arch = `uname -m`;
		chomp($arch);
	}

$x	= "[0-9a-f]";	# hex character
	$xs	= "[0-9a-f ]";	# hex character or space
	$funcre = qr/^$x* <(.*)>:$/;
	if ($arch eq 'aarch64') {
		#ffffffc0006325cc:       a9bb7bfd        stp     x29, x30, [sp,#-80]!
		$re = qr/^.*stp.*sp,\#-([0-9]{1,8})\]\!/o;
	} elsif ($arch eq 'arm') {
		#c0008ffc:	e24dd064	sub	sp, sp, #100	; 0x64
		$re = qr/.*sub.*sp, sp, #(([0-9]{2}|[3-9])[0-9]{2})/o;
	} elsif ($arch =~ /^x86(_64)?$/ || $arch =~ /^i[3456]86$/) {
		#c0105234:       81 ec ac 05 00 00       sub    $0x5ac,%esp
		# 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
		$re = qr/.*adds.*r12=-(([0-9]{2}|[3-9])[0-9]{2}),r12/o;
	} elsif ($arch eq 'm68k') {
		#    2b6c:       4e56 fb70       linkw %fp,#-1168
		#  1df770:       defc ffe4       addaw #-28,%sp
		$re = qr/.*(?:linkw %fp,|addaw )#-([0-9]{1,4})(?:,%sp)?$/o;
	} elsif ($arch eq 'mips64') {
		#8800402c:       67bdfff0        daddiu  sp,sp,-16
		$re = qr/.*daddiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
	} elsif ($arch eq 'mips') {
		#88003254:       27bdffe0        addiu   sp,sp,-32
		$re = qr/.*addiu.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
	} elsif ($arch eq 'nios2') {
		#25a8:	defffb04 	addi	sp,sp,-20
		$re = qr/.*addi.*sp,sp,-(([0-9]{2}|[3-9])[0-9]{2})/o;
	} elsif ($arch eq 'openrisc') {
		# c000043c:       9c 21 fe f0     l.addi r1,r1,-272
		$re = qr/.*l\.addi.*r1,r1,-(([0-9]{2}|[3-9])[0-9]{2})/o;
	} elsif ($arch eq 'parisc' || $arch eq 'parisc64') {
		$re = qr/.*ldo ($x{1,8})$sp$,sp/o;
	} elsif ($arch eq 'ppc') {
		#c00029f4:       94 21 ff 30     stwu    r1,-208(r1)
		$re = qr/.*stwu.*r1,-($x{1,8})$r1$/o;
	} elsif ($arch eq 'ppc64') {
		#XXX
		$re = qr/.*stdu.*r1,-($x{1,8})$r1$/o;
	} elsif ($arch eq 'powerpc') {
		$re = qr/.*st[dw]u.*r1,-($x{1,8})$r1$/o;
	} elsif ($arch =~ /^s390x?$/) {
		#   11160:       a7 fb ff 60             aghi   %r15,-160
		# or
		#  100092:	 e3 f0 ff c8 ff 71	 lay	 %r15,-56(%r15)
		$re = qr/.*(?:lay|ag?hi).*\%r15,-(([0-9]{2}|[3-9])[0-9]{2})
		      (?:$\%r15$)?$/ox;
	} elsif ($arch =~ /^sh64$/) {
		#XXX: we only check for the immediate case presently,
		#     though we will want to check for the movi/sub
		#     pair for larger users. -- PFM.
		#a00048e0:       d4fc40f0        addi.l  r15,-240,r15
		$re = qr/.*addi\.l.*r15,-(([0-9]{2}|[3-9])[0-9]{2}),r15/o;
	} elsif ($arch eq 'sparc' || $arch eq 'sparc64') {
		# f0019d10:       9d e3 bf 90     save  %sp, -112, %sp
		$re = qr/.*save.*%sp, -(([0-9]{2}|[3-9])[0-9]{2}), %sp/o;
	} else {
		print("wrong or unknown architecture \"$arch\"\n");
		exit
	}
}

#
# main()
#
my ($func, $file, $lastslash);

while (my $line = <STDIN>) {
	if ($line =~ m/$funcre/) {
		$func = $1;
	}
	elsif ($line =~ m/(.*):\s*file format/) {
		$file = $1;
		$file =~ s/\.ko//;
		$lastslash = rindex($file, "/");
		if ($lastslash != -1) {
			$file = substr($file, $lastslash + 1);
		}
	}
	elsif ($line =~ m/$re/) {
		my $size = $1;
		$size = hex($size) if ($size =~ /^0x/);

if ($size > 0xf0000000) {
			$size = - $size;
			$size += 0x80000000;
			$size += 0x80000000;
		}
		next if ($size > 0x10000000);

next if $line !~ m/^($xs*)/;
		my $addr = $1;
		$addr =~ s/ /0/g;
		$addr = "0x$addr";

my $intro = "$addr $func [$file]:";
		my $padlen = 56 - length($intro);
		while ($padlen > 0) {
			$intro .= '	';
			$padlen -= 8;
		}
		next if ($size < 100);
		push @stack, "$intro$size\n";
	}
	elsif (defined $dre && $line =~ m/$dre/) {
		my $size = "Dynamic ($1)";

next if $line !~ m/^($xs*)/;
		my $addr = $1;
		$addr =~ s/ /0/g;
		$addr = "0x$addr";

my $intro = "$addr $func [$file]:";
		my $padlen = 56 - length($intro);
		while ($padlen > 0) {
			$intro .= '	';
			$padlen -= 8;
		}
		push @stack, "$intro$size\n";
	}
}

# Sort output by size (last field)
print sort { ($b =~ /:\t*(\d+)$/)[0] <=> ($a =~ /:\t*(\d+)$/)[0] } @stack;