5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Salvatore Bonaccorso <carnil@xxxxxxxxxx> The backport of commit 3080ea5553cc ("stddef: Introduce DECLARE_FLEX_ARRAY() helper") to 5.10.y (as a prerequisite of another fix) modified scripts/kernel-doc and introduced a syntax error: Global symbol "$args" requires explicit package name (did you forget to declare "my $args"?) at ./scripts/kernel-doc line 1236. Global symbol "$args" requires explicit package name (did you forget to declare "my $args"?) at ./scripts/kernel-doc line 1236. Execution of ./scripts/kernel-doc aborted due to compilation errors. Note: The issue could be fixed in the 5.10.y series as well by backporting e86bdb24375a ("scripts: kernel-doc: reduce repeated regex expressions into variables") but just replacing the undeclared args back to ([^,)]+) was the most straightforward approach. The issue is specific to the backport to the 5.10.y series. Thus there is as well no upstream commit for this change. Fixes: 443b16ee3d9c ("stddef: Introduce DECLARE_FLEX_ARRAY() helper") # 5.10.y Reported-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/regressions/ZeHKjjPGoyv_b2Tg@xxxxxxxxxxx/T/#u Link: https://bugs.debian.org/1064035 Signed-off-by: Salvatore Bonaccorso <carnil@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- scripts/kernel-doc | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/scripts/kernel-doc +++ b/scripts/kernel-doc @@ -1233,7 +1233,7 @@ sub dump_struct($$) { # replace DECLARE_KFIFO_PTR $members =~ s/DECLARE_KFIFO_PTR\s*\(([^,)]+),\s*([^,)]+)\)/$2 \*$1/gos; # replace DECLARE_FLEX_ARRAY - $members =~ s/(?:__)?DECLARE_FLEX_ARRAY\s*\($args,\s*$args\)/$1 $2\[\]/gos; + $members =~ s/(?:__)?DECLARE_FLEX_ARRAY\s*\(([^,)]+),\s*([^,)]+)\)/$1 $2\[\]/gos; my $declaration = $members; # Split nested struct/union elements as newer ones