Closed
Description
Combination such compiler option will either lead to a link error, or a runtime segmentation fault.
Address sanitizer
Consider this C code:
#include <stdlib.h>
int main(int argc, char **argv) {
int *array = (int*) malloc(100);
free(array);
return *array;
}Compile it using gcc with -fsanitize=address -static on glibc system:
> LANG=C gcc -O1 -g -fsanitize=address -fno-omit-frame-pointer useafterfree.c -static
gcc: error: cannot specify -static with -fsanitize=address
Compile it using clang with -fsanitize=address -static on glibc system:
> clang -O1 -g -fsanitize=address -fno-omit-frame-pointer useafterfree.c -static
/usr/bin/ld: /usr/lib/clang/11.1.0/lib/linux/libclang_rt.asan-x86_64.a(asan_linux.cpp.o): in function `__asan::AsanDoesNotSupportStaticLinkage()':
(.text+0xd3): undefined reference to `_DYNAMIC'
clang-11: error: linker command failed with exit code 1 (use -v to see invocation)
Compile it using clang with -fsanitize=address -static on musl system:
> clang -O1 -g -fsanitize=address -fno-omit-frame-pointer useafterfree.c --unwindlib=libunwind -static
ld.lld: error: undefined hidden symbol: _DYNAMIC
>>> referenced by crt1.c
>>> /usr/lib/gcc/x86_64-gentoo-linux-musl/11.1.0/../../../crt1.o:(.text+0x9)
>>> referenced by asan_linux.cpp.o:(__asan::AsanDoesNotSupportStaticLinkage()) in archive /usr/lib/llvm/12/bin/../../../../lib/clang/12.0.0/lib/linux/libclang_rt.asan-x86_64.a
>>> referenced by __init_tls.c:0 (src/env/__init_tls.c:0)
>>> __init_tls.lo:(static_init_tls) in archive /usr/lib/gcc/x86_64-gentoo-linux-musl/11.1.0/../../../libc.a
>>> referenced 2 more times
clang-12: error: linker command failed with exit code 1 (use -v to see invocation)
( I don't enable GCC's sanitizer support on musl system, but the result should same )
The same code in rust:
fn main() {
let array = vec![42; 100];
let ptr = array.as_ptr();
drop(array);
assert_eq!(unsafe { *ptr }, 42);
}x86_64-unknown-linux-gnu system:
> rustc --target x86_64-unknown-linux-gnu -g -Z sanitizer=address -Ctarget-feature=+crt-static use-after-free.rs
error: linking with `cc` failed: exit status: 1
|
= note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-Wl,-Bstatic" "-Wl,--whole-archive" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a" "-Wl,--no-whole-archive" "-L" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "use-after-free.use_after_free.7rcbfp3g-cgu.0.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.1.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.10.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.11.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.12.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.13.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.14.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.15.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.2.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.3.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.4.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.5.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.6.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.7.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.8.rcgu.o" "use-after-free.use_after_free.7rcbfp3g-cgu.9.rcgu.o" "-o" "use-after-free" "use-after-free.4tvmi6p3xldfen0k.rcgu.o" "-Wl,--gc-sections" "-static" "-no-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,--start-group" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-21256c14e4504640.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-986e7fea4474d4d2.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-91d85f45babdb06e.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-756509c31813f9a6.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-5c2ef587e740c0cc.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-ad8f9371d31db1b3.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-402820fb3b4d3dd8.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-5e8e903f07dc8747.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7ab9ae5080c07187.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-c8e8d47c6bf14de2.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5a02dbb58abd015a.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-cedc8fec61444895.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1c96351c52bc56a.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e41c6d24baeb2249.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-62493b241881590c.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-a1fd7734706d5518.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib" "-Wl,--end-group" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-1eec8756baa5bc24.rlib" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-lgcc_eh" "-lgcc" "-Wl,-Bdynamic"
= note: /usr/bin/ld: /home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a(asan_interceptors.cpp.o): in function `InitializeCommonInterceptors()':
/rustc/llvm/src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:10115: warning: Using 'getaddrinfo' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: /rustc/llvm/src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:10121: warning: Using 'gethostbyname2_r' in statically linked applications requires at runtime the shared libraries from the glibc version used for linking
/usr/bin/ld: /home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a(asan_linux.cpp.o): in function `__asan::AsanDoesNotSupportStaticLinkage()':
/rustc/llvm/src/llvm-project/compiler-rt/lib/asan/asan_linux.cpp:88: undefined reference to `_DYNAMIC'
collect2: error: ld returned 1 exit status
error: aborting due to previous error
x86_64-unknown-linux-musl system:
> rustc --target x86_64-unknown-linux-musl -g -Z sanitizer=address use-after-free.rs
> ./use-after-free
zsh: segmentation fault (core dumped) ./use-after-free
> lldb use-after-free
(lldb) target create "use-after-free"
Current executable set to '/tmp/use-after-free' (x86_64).
(lldb) r
Process 37117 launched: '/tmp/use-after-free' (x86_64)
Process 37117 stopped
* thread #1, name = 'use-after-free', stop reason = signal SIGSEGV: invalid address (fault address: 0x0)
frame #0: 0x0000000000000000
error: memory read failed for 0x0
(lldb) bt
* thread #1, name = 'use-after-free', stop reason = signal SIGSEGV: invalid address (fault address: 0x0)
* frame #0: 0x0000000000000000
frame #1: 0x00007ffff769515d use-after-free`::__interceptor_vsnprintf(str=0x0000000000000000, size=0, format="Symbol not found: %s", ap=<unavailable>) at sanitizer_common_interceptors.inc:1651:1
frame #2: 0x00007ffff771650c use-after-free`__dl_vseterr + 135
frame #3: 0x00007ffff77165ea use-after-free`__dl_seterr + 140
frame #4: 0x00007ffff7718689 use-after-free`stub_dlsym + 15
frame #5: 0x00007ffff76b9405 use-after-free`__interception::InterceptFunction(char const*, unsigned long*, unsigned long, unsigned long) at interception_linux.cpp:42:21
frame #6: 0x00007ffff76b9400 use-after-free`__interception::InterceptFunction(name="mmap", ptr_to_real=0x00007ffff7764f38, func=140737343963632, wrapper=140737343963632) at interception_linux.cpp:61
frame #7: 0x00007ffff769ffc4 use-after-free`__asan::InitializeAsanInterceptors() at sanitizer_common_interceptors.inc:10041:3
frame #8: 0x00007ffff769ff89 use-after-free`__asan::InitializeAsanInterceptors() at asan_interceptors.cpp:617
frame #9: 0x00007ffff76b679b use-after-free`__asan::(anonymous)() at asan_rtl.cpp:452:29
frame #10: 0x00007ffff76d6956 use-after-free`asan.module_ctor + 6
frame #11: 0x00007ffff7715f82 use-after-free`libc_start_init + 24
frame #12: 0x00007ffff7715fa7 use-after-free`libc_start_main_stage2 + 29
frame #13: 0x00007ffff763853f use-after-free`_start + 22
(lldb)
The crt-static is enabled on musl by default, disable it make sanitizer works:
> rustc --target x86_64-unknown-linux-musl -g -Z sanitizer=address -C target-feature=-crt-static use-after-free.rs
> ./use-after-free
=================================================================
==11679==ERROR: AddressSanitizer: heap-use-after-free on address 0x614000000040 at pc 0x5606f0286b76 bp 0x7ffc933e0730 sp 0x7ffc933e0728
READ of size 4 at 0x614000000040 thread T0
#0 0x5606f0286b75 in use_after_free::main::hd67444d0a9ab0b12 /tmp/use-after-free.rs:5:25
#1 0x5606f028512a in core::ops::function::FnOnce::call_once::hf0066ba3fb7d9316 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:227:5
#2 0x5606f0285824 in std::sys_common::backtrace::__rust_begin_short_backtrace::h039e6bbe2d8f8280 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/sys_common/backtrace.rs:125:18
#3 0x5606f0284643 in std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h3a34146054417093 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:49:18
#4 0x5606f0298678 in core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$F$GT$::call_once::h443ce774ba259e6b /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:259:13
#5 0x5606f0298678 in std::panicking::try::do_call::h1984458153b1f78e /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:401:40
#6 0x5606f0298678 in std::panicking::try::h4337f335f0d0b14c /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:365:19
#7 0x5606f0298678 in std::panic::catch_unwind::h5bacacb3e888c4d6 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panic.rs:433:14
#8 0x5606f0298678 in std::rt::lang_start_internal::hee984e623c043710 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:34:21
#9 0x5606f02845af in std::rt::lang_start::hef9290f42a8f1b8a /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:48:5
#10 0x5606f0286f1b in main (/tmp/use-after-free+0xecf1b)
#11 0x7fd6c015e588 in libc_start_main_stage2 /usr/src/debug/sys-libs/musl-1.2.2-r2/musl-1.2.2/src/env/__libc_start_main.c:94:7
0x614000000040 is located 0 bytes inside of 400-byte region [0x614000000040,0x6140000001d0)
freed by thread T0 here:
#0 0x5606f02535d7 in free /checkout/src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:127:3
#1 0x5606f027b12c in alloc::alloc::dealloc::h513f6f31c280f216 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/alloc.rs:104:14
#2 0x5606f027b4d5 in _$LT$alloc..alloc..Global$u20$as$u20$core..alloc..Allocator$GT$::deallocate::he32da7f15b2b4f6e /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/alloc.rs:239:22
#3 0x5606f0279949 in _$LT$alloc..raw_vec..RawVec$LT$T$C$A$GT$$u20$as$u20$core..ops..drop..Drop$GT$::drop::h0c6326d9a99b0440 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/raw_vec.rs:521:22
#4 0x5606f02853c9 in core::ptr::drop_in_place$LT$alloc..raw_vec..RawVec$LT$i32$GT$$GT$::hb13a97468692a292 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ptr/mod.rs:192:1
#5 0x5606f027ba95 in core::mem::drop::h369ec49231cf9282 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/mem/mod.rs:891:24
#6 0x5606f028512a in core::ops::function::FnOnce::call_once::hf0066ba3fb7d9316 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:227:5
#7 0x5606f0284643 in std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h3a34146054417093 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:49:18
previously allocated by thread T0 here:
#0 0x5606f025379f in malloc /checkout/src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3
#1 0x5606f0279cbb in alloc::alloc::alloc::h0accaf8fe1496f6b /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/alloc.rs:86:14
#2 0x5606f0279f67 in alloc::alloc::Global::alloc_impl::h4bd67d5bd2f0c331 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/alloc.rs:166:73
#3 0x5606f027ba20 in _$LT$alloc..alloc..Global$u20$as$u20$core..alloc..Allocator$GT$::allocate::hc392a1bbb11a25a7 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/alloc.rs:226:9
#4 0x5606f0277843 in alloc::raw_vec::RawVec$LT$T$C$A$GT$::allocate_in::he9a19d70657f5911 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/raw_vec.rs:203:45
#5 0x5606f0278e8b in alloc::raw_vec::RawVec$LT$T$C$A$GT$::with_capacity_in::h083a9dd897fd54be /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/raw_vec.rs:142:9
#6 0x5606f0283708 in alloc::vec::from_elem::h2408619de949e29a /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/vec/mod.rs:2291:5
#7 0x5606f028512a in core::ops::function::FnOnce::call_once::hf0066ba3fb7d9316 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:227:5
#8 0x5606f0284643 in std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::h3a34146054417093 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:49:18
SUMMARY: AddressSanitizer: heap-use-after-free /tmp/use-after-free.rs:5:25 in use_after_free::main::hd67444d0a9ab0b12
Shadow bytes around the buggy address:
0x0c287fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c287fff8000: fa fa fa fa fa fa fa fa[fd]fd fd fd fd fd fd fd
0x0c287fff8010: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287fff8020: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287fff8030: fd fd fd fd fd fd fd fd fd fd fa fa fa fa fa fa
0x0c287fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==11679==ABORTING
Thread sanitizer
static mut V: i32 = 0;
fn main() {
let thread = std::thread::spawn(|| unsafe { V = 1 });
unsafe { V = -1 };
assert_eq!(unsafe { V }, -1);
thread.join().unwrap();
}x86_64-unknown-linux-gnu system:
> rustc --target x86_64-unknown-linux-gnu -g -Z sanitizer=thread -Ctarget-feature=+crt-static data-race.rs
> lldb ./data-race
(lldb) target create "./data-race"
Current executable set to '/tmp/data-race' (x86_64).
(lldb) r
Process 31912 launched: '/tmp/data-race' (x86_64)
Process 31912 stopped
* thread #1, name = 'data-race', stop reason = signal SIGSEGV: invalid address (fault address: 0xfffffffffffc03d0)
frame #0: 0x000000000041370d data-race`::__interceptor_memcpy() [inlined] cur_thread_init at tsan_rtl.h:470:7
(lldb) bt
* thread #1, name = 'data-race', stop reason = signal SIGSEGV: invalid address (fault address: 0xfffffffffffc03d0)
* frame #0: 0x000000000041370d data-race`::__interceptor_memcpy() [inlined] cur_thread_init at tsan_rtl.h:470:7
frame #1: 0x0000000000413706 data-race`::__interceptor_memcpy() at sanitizer_common_interceptors.inc:810
frame #2: 0x00000000004adb63 data-race`__libc_setup_tls + 323
frame #3: 0x00000000004ad0f6 data-race`__libc_start_main + 1782
frame #4: 0x0000000000403caa data-race`_start + 42
x86_64-unknown-linux-musl system:
> rustc --target x86_64-unknown-linux-musl -g -Z sanitizer=thread data-race.rs
error: linking with `cc` failed: exit status: 1
|
= note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-nostartfiles" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained/rcrt1.o" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained/crti.o" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained/crtbeginS.o" "-Wl,-Bstatic" "-Wl,--whole-archive" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/librustc-nightly_rt.tsan.a" "-Wl,--no-whole-archive" "-L" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib" "-L" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained" "data-race.data_race.7rcbfp3g-cgu.0.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.1.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.10.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.11.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.12.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.13.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.14.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.15.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.2.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.3.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.4.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.5.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.6.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.7.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.8.rcgu.o" "data-race.data_race.7rcbfp3g-cgu.9.rcgu.o" "-o" "data-race" "data-race.41y57o6b39iya3rh.rcgu.o" "-Wl,--gc-sections" "-static-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib" "-Wl,--start-group" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd-adf528d372a28473.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libpanic_unwind-ba85beab84d56f31.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libminiz_oxide-8e0ed322aa81e3bf.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libadler-22a1ad77c898fd0f.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libobject-4a2366535c95aae7.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libaddr2line-6ccaff62092822fc.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libgimli-158019b8b22c2e82.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd_detect-ffbf746b700d6467.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/librustc_demangle-b17d0f1c2c3afc1b.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libhashbrown-39a44a46f42c92b0.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/librustc_std_workspace_alloc-9f9afb16499a5305.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libunwind-f2e73ac26b03b976.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libcfg_if-19717748cdece5e2.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/liblibc-683c2ad1ec876f13.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc-bc18a38f44606206.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/librustc_std_workspace_core-9af05494f0573e1b.rlib" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libcore-60eab00334ec8288.rlib" "-Wl,--end-group" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/libcompiler_builtins-3ce947a09e01658c.rlib" "-Wl,-Bdynamic" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained/crtendS.o" "/home/han/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-musl/lib/self-contained/crtn.o"
= note: ld.lld: error: undefined symbol: __gcc_personality_v0
>>> referenced by data_race.7rcbfp3g-cgu.0
>>> data-race.data_race.7rcbfp3g-cgu.0.rcgu.o:(DW.ref.__gcc_personality_v0)
clang-12: error: linker command failed with exit code 1 (use -v to see invocation)
error: aborting due to previous error
> rustc --target x86_64-unknown-linux-musl -g -Z sanitizer=thread -Ctarget-feature=-crt-static data-race.rs
> ./data-race
==================
WARNING: ThreadSanitizer: data race (pid=31254)
Write of size 4 at 0x559c13e33000 by thread T1:
#0 data_race::main::_$u7b$$u7b$closure$u7d$$u7d$::h5425793b00e03c82 /tmp/data-race.rs:4:49 (data-race+0xb6fb6)
#1 std::sys_common::backtrace::__rust_begin_short_backtrace::h0c43622592bcd42b /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/sys_common/backtrace.rs:125:18 (data-race+0xb6342)
#2 std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::_$u7b$$u7b$closure$u7d$$u7d$::he1f0cb6d014f0414 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/thread/mod.rs:481:17 (data-race+0xb7e62)
#3 _$LT$std..panic..AssertUnwindSafe$LT$F$GT$$u20$as$u20$core..ops..function..FnOnce$LT$$LP$$RP$$GT$$GT$::call_once::h660f3006249ddeb6 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panic.rs:346:9 (data-race+0xb6622)
#4 std::panicking::try::do_call::he0360dcee9353d32 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:401:40 (data-race+0xb9644)
#5 __rust_try <null> (data-race+0xb97ab)
#6 std::panicking::try::habe2877bdc0442fc /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:365:19 (data-race+0xb9560)
#7 std::panic::catch_unwind::ha18db59c1b466881 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panic.rs:433:14 (data-race+0xb6662)
#8 std::thread::Builder::spawn_unchecked::_$u7b$$u7b$closure$u7d$$u7d$::hbab43888eaac5ed4 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/thread/mod.rs:480:30 (data-race+0xb7c7d)
#9 core::ops::function::FnOnce::call_once$u7b$$u7b$vtable.shim$u7d$$u7d$::h530014c6fb3b4bcf /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:227:5 (data-race+0xb9db1)
#10 _$LT$alloc..boxed..Box$LT$F$C$A$GT$$u20$as$u20$core..ops..function..FnOnce$LT$Args$GT$$GT$::call_once::h86bce8a1db04edb7 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/boxed.rs:1575:9 (data-race+0xcf0b6)
#11 _$LT$alloc..boxed..Box$LT$F$C$A$GT$$u20$as$u20$core..ops..function..FnOnce$LT$Args$GT$$GT$::call_once::h05d43cce12a14700 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/alloc/src/boxed.rs:1575:9 (data-race+0xcf0b6)
#12 std::sys::unix::thread::Thread::new::thread_start::h8509010ee939454d /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/sys/unix/thread.rs:71:17 (data-race+0xcf0b6)
Previous write of size 4 at 0x559c13e33000 by main thread:
#0 data_race::main::he6faf34f54450c2d /tmp/data-race.rs:5:14 (data-race+0xb6e0d)
#1 core::ops::function::FnOnce::call_once::h481df0edccf5a53d /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:227:5 (data-race+0xb9ede)
#2 std::sys_common::backtrace::__rust_begin_short_backtrace::h1142b335c5133f08 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/sys_common/backtrace.rs:125:18 (data-race+0xb63d1)
#3 std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::hb27e65b2ba5fe698 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:49:18 (data-race+0xb9c8e)
#4 core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$F$GT$::call_once::h443ce774ba259e6b /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:259:13 (data-race+0xcd518)
#5 std::panicking::try::do_call::h1984458153b1f78e /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:401:40 (data-race+0xcd518)
#6 std::panicking::try::h4337f335f0d0b14c /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:365:19 (data-race+0xcd518)
#7 std::panic::catch_unwind::h5bacacb3e888c4d6 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panic.rs:433:14 (data-race+0xcd518)
#8 std::rt::lang_start_internal::hee984e623c043710 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:34:21 (data-race+0xcd518)
#9 main <null> (data-race+0xb7016)
Location is global 'data_race::V::h6d3c71c01326dbb6' of size 4 at 0x559c13e33000 (data-race+0x000000b1b000)
Thread T1 (tid=31256, running) created by main thread at:
#0 pthread_create /checkout/src/llvm-project/compiler-rt/lib/tsan/rtl/tsan_interceptors_posix.cpp:965:3 (data-race+0x8de9d)
#1 std::sys::unix::thread::Thread::new::h9f8b95f1ab5ef8e1 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/sys/unix/thread.rs:50:19 (data-race+0xcef34)
#2 std::thread::Builder::spawn::h8d5ed25372280dca /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/thread/mod.rs:388:18 (data-race+0xb7ed4)
#3 std::thread::spawn::h362a5e2df80b92df /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/thread/mod.rs:627:5 (data-race+0xb726b)
#4 data_race::main::he6faf34f54450c2d /tmp/data-race.rs:4:18 (data-race+0xb6dfd)
#5 core::ops::function::FnOnce::call_once::h481df0edccf5a53d /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:227:5 (data-race+0xb9ede)
#6 std::sys_common::backtrace::__rust_begin_short_backtrace::h1142b335c5133f08 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/sys_common/backtrace.rs:125:18 (data-race+0xb63d1)
#7 std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::hb27e65b2ba5fe698 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:49:18 (data-race+0xb9c8e)
#8 core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$F$GT$::call_once::h443ce774ba259e6b /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/core/src/ops/function.rs:259:13 (data-race+0xcd518)
#9 std::panicking::try::do_call::h1984458153b1f78e /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:401:40 (data-race+0xcd518)
#10 std::panicking::try::h4337f335f0d0b14c /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panicking.rs:365:19 (data-race+0xcd518)
#11 std::panic::catch_unwind::h5bacacb3e888c4d6 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/panic.rs:433:14 (data-race+0xcd518)
#12 std::rt::lang_start_internal::hee984e623c043710 /rustc/4e3e6db011c5b482d2bef8ba02274657f93b5e0d/library/std/src/rt.rs:34:21 (data-race+0xcd518)
#13 main <null> (data-race+0xb7016)
SUMMARY: ThreadSanitizer: data race /tmp/data-race.rs:4:49 in data_race::main::_$u7b$$u7b$closure$u7d$$u7d$::h5425793b00e03c82
==================
ThreadSanitizer: reported 1 warnings
Leak sanitizer
fn main() {
std::mem::forget(vec![10;0]);
}x86_64-unknown-linux-gnu system:
> rustc --target x86_64-unknown-linux-gnu -g -Z sanitizer=leak -Ctarget-feature=+crt-static forget.rs
> ./forget
==6109==Sanitizer CHECK failed: /checkout/src/llvm-project/compiler-rt/lib/lsan/lsan_interceptors.cpp:55 ((!lsan_init_is_running)) != (0) (0, 0)
x86_64-unknown-linux-musl system:
> rustc --target x86_64-unknown-linux-musl -g -Z sanitizer=leak -Ctarget-feature=+crt-static forget.rs
> ./forget
zsh: segmentation fault (core dumped) ./forget
> lldb ./forget
(lldb) target create "./forget"
Current executable set to '/tmp/forget' (x86_64).
(lldb) r
Process 7018 launched: '/tmp/forget' (x86_64)
Process 7018 stopped
* thread #1, name = 'forget', stop reason = signal SIGSEGV: invalid address (fault address: 0x0)
frame #0: 0x0000000000000000
error: memory read failed for 0x0
(lldb) bt
* thread #1, name = 'forget', stop reason = signal SIGSEGV: invalid address (fault address: 0x0)
* frame #0: 0x0000000000000000
frame #1: 0x00007ffff7717037 forget`std::rt::lang_start_internal::hee984e623c043710 [inlined] std::sys::unix::init::reset_sigpipe::h7a2caafd6df55210 at mod.rs:119:17
frame #2: 0x00007ffff7717027 forget`std::rt::lang_start_internal::hee984e623c043710 [inlined] std::sys::unix::init::h90a84edd8425fcc8 at mod.rs:62
frame #3: 0x00007ffff7716f72 forget`std::rt::lang_start_internal::hee984e623c043710 [inlined] std::sys_common::rt::init::h3947e78f9de3a69e at rt.rs:15
frame #4: 0x00007ffff7716f72 forget`std::rt::lang_start_internal::hee984e623c043710 at rt.rs:32
frame #5: 0x00007ffff7704ea0 forget`std::rt::lang_start::h97aa25b0f579616a(main=(forget`forget::main::h4fe3477e9b974083 at forget.rs:1), argc=1, argv=0x00007fffffffbd58) at rt.rs:48:5
frame #6: 0x00007ffff770586c forget`main + 28
frame #7: 0x00007ffff773944d forget`libc_start_main_stage2 + 39
frame #8: 0x00007ffff76e5530 forget`_start + 22