Commit 28c8e088 authored Jan 04, 2023 by Mathieu Desnoyers Committed by Peter Zijlstra Jan 12, 2023

rseq: Increase AT_VECTOR_SIZE_BASE to match rseq auxvec entries

Two new auxiliary vector entries are introduced for rseq without
matching increment of the AT_VECTOR_SIZE_BASE, which causes failures
with CONFIG_HARDENED_USERCOPY=y.

Fixes: 317c8194 ("rseq: Introduce feature size and alignment ELF auxiliary vector entries")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20230104192054.34046-1-mathieu.desnoyers@efficios.com

parent c91b0bf3

include/linux/auxvec.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -4,6 +4,6 @@

		#include <uapi/linux/auxvec.h>

		#define AT_VECTOR_SIZE_BASE 20 /* NEW_AUX_ENT entries in auxiliary table */
		#define AT_VECTOR_SIZE_BASE 22 /* NEW_AUX_ENT entries in auxiliary table */
		/* number of "#define AT_." above, minus {AT_NULL, AT_IGNORE, AT_NOTELF} /
		#endif /* _LINUX_AUXVEC_H */