bjoernager/rust
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Add kernel-address sanitizer support for freestanding targets

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This commit is contained in:
Wesley Norris 2022-09-11 19:36:19 -04:00
parent 0416b1a6f6
commit 19714385e0
18 changed files with 142 additions and 12 deletions
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8
compiler/rustc_session/src/config.rs
View file

@ -1022,7 +1022,13 @@ fn default_configuration(sess: &Session) -> CrateConfig {
let panic_strategy = sess.panic_strategy();
ret.insert((sym::panic, Some(panic_strategy.desc_symbol())));
for s in sess.opts.unstable_opts.sanitizer {
for mut s in sess.opts.unstable_opts.sanitizer {
// KASAN should use the same attribute name as ASAN, as it's still ASAN
// under the hood
if s == SanitizerSet::KERNELADDRESS {
s = SanitizerSet::ADDRESS;
}
let symbol = Symbol::intern(&s.to_string());
ret.insert((sym::sanitize, Some(symbol)));
}

3
compiler/rustc_session/src/options.rs
View file

@ -370,7 +370,7 @@ mod desc {
pub const parse_opt_panic_strategy: &str = parse_panic_strategy;
pub const parse_oom_strategy: &str = "either `panic` or `abort`";
pub const parse_relro_level: &str = "one of: `full`, `partial`, or `off`";
pub const parse_sanitizers: &str = "comma separated list of sanitizers: `address`, `cfi`, `hwaddress`, `kcfi`, `leak`, `memory`, `memtag`, `shadow-call-stack`, or `thread`";
pub const parse_sanitizers: &str = "comma separated list of sanitizers: `address`, `cfi`, `hwaddress`, `kcfi`, `kernel-address`, `leak`, `memory`, `memtag`, `shadow-call-stack`, or `thread`";
pub const parse_sanitizer_memory_track_origins: &str = "0, 1, or 2";
pub const parse_cfguard: &str =
"either a boolean (`yes`, `no`, `on`, `off`, etc), `checks`, or `nochecks`";
@ -684,6 +684,7 @@ mod parse {
"address" => SanitizerSet::ADDRESS,
"cfi" => SanitizerSet::CFI,
"kcfi" => SanitizerSet::KCFI,
"kernel-address" => SanitizerSet::KERNELADDRESS,
"leak" => SanitizerSet::LEAK,
"memory" => SanitizerSet::MEMORY,
"memtag" => SanitizerSet::MEMTAG,

4
compiler/rustc_session/src/session.rs
View file

@ -954,10 +954,10 @@ impl Session {
/// Checks if LLVM lifetime markers should be emitted.
pub fn emit_lifetime_markers(&self) -> bool {
self.opts.optimize != config::OptLevel::No
// AddressSanitizer uses lifetimes to detect use after scope bugs.
// AddressSanitizer and KernelAddressSanitizer uses lifetimes to detect use after scope bugs.
// MemorySanitizer uses lifetimes to detect use of uninitialized stack variables.
// HWAddressSanitizer will use lifetimes to detect use after scope bugs in the future.
|| self.opts.unstable_opts.sanitizer.intersects(SanitizerSet::ADDRESS | SanitizerSet::MEMORY | SanitizerSet::HWADDRESS)
|| self.opts.unstable_opts.sanitizer.intersects(SanitizerSet::ADDRESS | SanitizerSet::KERNELADDRESS | SanitizerSet::MEMORY | SanitizerSet::HWADDRESS)
}
pub fn is_proc_macro_attr(&self, attr: &Attribute) -> bool {