Commit 5e7adc81 authored by Thorsten Blum's avatar Thorsten Blum Committed by Ingo Molnar
Browse files

perf/x86: Annotate struct bts_buffer::buf with __counted_by() 



Add the __counted_by() compiler attribute to the flexible array member
buf to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.

No functional changes intended.

Signed-off-by: default avatarThorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250305123134.215577-2-thorsten.blum@linux.dev
parent da02f54e

arch/x86/events/intel/bts.c

+1 −1
Original line number Diff line number Diff line
@@ -58,7 +58,7 @@ struct bts_buffer { 
	local_t		head;

	unsigned long	end;

	void		**data_pages;

	struct bts_phys	buf[];

	struct bts_phys	buf[] __counted_by(nr_bufs);

};



static struct pmu bts_pmu;