The patch titled Subject: checkstack: fix printed address has been added to the -mm mm-hotfixes-unstable branch. Its filename is checkstack-fix-printed-address.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/checkstack-fix-printed-address.patch This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Heiko Carstens <hca@xxxxxxxxxxxxx> Subject: checkstack: fix printed address Date: Mon, 20 Nov 2023 19:37:17 +0100 All addresses printed by checkstack have an extra incorrect 0 appended at the end. This was introduced with commit 677f1410e058 ("scripts/checkstack.pl: don't display $dre as different entity"): since then the address is taken from the line which contains the function name, instead of the line which contains stack consumption. E.g. on s390: 0000000000100a30 <do_one_initcall>: ... 100a44: e3 f0 ff 70 ff 71 lay %r15,-144(%r15) So the used regex which matches spaces and hexadecimal numbers to extract an address now matches a different substring. Subsequently replacing spaces with 0 appends a zero at the and, instead of replacing leading spaces. Fix this by using the proper regex, and simplify the code a bit. Link: https://lkml.kernel.org/r/20231120183719.2188479-2-hca@xxxxxxxxxxxxx Fixes: 677f1410e058 ("scripts/checkstack.pl: don't display $dre as different entity") Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx> Cc: Maninder Singh <maninder1.s@xxxxxxxxxxx> Cc: Masahiro Yamada <masahiroy@xxxxxxxxxx> Cc: Vaneet Narang <v.narang@xxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/checkstack.pl | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) --- a/scripts/checkstack.pl~checkstack-fix-printed-address +++ a/scripts/checkstack.pl @@ -139,15 +139,11 @@ $total_size = 0; while (my $line = <STDIN>) { if ($line =~ m/$funcre/) { $func = $1; - next if $line !~ m/^($xs*)/; + next if $line !~ m/^($x*)/; if ($total_size > $min_stack) { push @stack, "$intro$total_size\n"; } - - $addr = $1; - $addr =~ s/ /0/g; - $addr = "0x$addr"; - + $addr = "0x$1"; $intro = "$addr $func [$file]:"; my $padlen = 56 - length($intro); while ($padlen > 0) { _ Patches currently in -mm which might be from hca@xxxxxxxxxxxxx are checkstack-fix-printed-address.patch checkstack-sort-output-by-size-and-function-name.patch checkstack-allow-to-pass-minstacksize-parameter.patch arch-remove-arch_thread_stack_allocator.patch arch-remove-arch_task_struct_allocator.patch arch-remove-arch_task_struct_on_stack.patch