ubsan: Remove vla bound checks.
The kernel the kernel is built with -Wvla for some time, so is not supposed to have any variable length arrays. Remove vla bounds checking from ubsan since it's useless now. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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18
lib/ubsan.c
18
lib/ubsan.c
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@ -349,24 +349,6 @@ void __ubsan_handle_type_mismatch_v1(struct type_mismatch_data_v1 *data,
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}
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EXPORT_SYMBOL(__ubsan_handle_type_mismatch_v1);
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void __ubsan_handle_vla_bound_not_positive(struct vla_bound_data *data,
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void *bound)
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{
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unsigned long flags;
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char bound_str[VALUE_LENGTH];
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if (suppress_report(&data->location))
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return;
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ubsan_prologue(&data->location, &flags);
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val_to_string(bound_str, sizeof(bound_str), data->type, bound);
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pr_err("variable length array bound value %s <= 0\n", bound_str);
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ubsan_epilogue(&flags);
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}
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EXPORT_SYMBOL(__ubsan_handle_vla_bound_not_positive);
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void __ubsan_handle_out_of_bounds(struct out_of_bounds_data *data, void *index)
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{
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unsigned long flags;
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@ -57,11 +57,6 @@ struct nonnull_arg_data {
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int arg_index;
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};
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struct vla_bound_data {
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struct source_location location;
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struct type_descriptor *type;
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};
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struct out_of_bounds_data {
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struct source_location location;
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struct type_descriptor *array_type;
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@ -3,7 +3,6 @@ ifdef CONFIG_UBSAN
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=shift)
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=integer-divide-by-zero)
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=unreachable)
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=vla-bound)
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=signed-integer-overflow)
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=bounds)
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CFLAGS_UBSAN += $(call cc-option, -fsanitize=object-size)
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