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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /scripts/module-common.c | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'scripts/module-common.c')
| -rw-r--r-- | scripts/module-common.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/scripts/module-common.c b/scripts/module-common.c new file mode 100644 index 000000000..12fbc6d3a --- /dev/null +++ b/scripts/module-common.c @@ -0,0 +1,25 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/module.h> +/* + * Include build-salt.h after module.h in order to + * inherit the definitions. + */ +#define INCLUDE_VERMAGIC +#include <linux/build-salt.h> +#include <linux/elfnote-lto.h> +#include <linux/vermagic.h> + +#ifdef CONFIG_UNWINDER_ORC +#include <asm/orc_header.h> +ORC_HEADER; +#endif + +BUILD_SALT; +BUILD_LTO_INFO; + +MODULE_INFO(vermagic, VERMAGIC_STRING); + +#ifdef CONFIG_MITIGATION_RETPOLINE +MODULE_INFO(retpoline, "Y"); +#endif |