Skip to content

ThreadSanitizer detects a data race in the test runner (rustc --test) #39608

Closed
#65097
Closed
ThreadSanitizer detects a data race in the test runner (rustc --test)#39608
#65097
Labels
A-libtestArea: `#[test]` / the `test` libraryA-sanitizersArea: Sanitizers for correctness and code qualityC-bugCategory: This is a bug.

Description

@japaric
japaric
opened on Feb 7, 2017

iff the crate contains two or more unit tests.

STR

$ cargo new --lib test-runner && cd $_

$ edit src/lib.rs && cat $_

#[test]
fn foo() {}

#[test]
fn bar() {}
$ RUSTFLAGS="-Z sanitizer=thread" cargo test --target x86_64-unknown-linux-gnu                                                                                                                                   <<<
     Running target/x86_64-unknown-linux-gnu/debug/deps/test_runner-d861d6557762b235

running 2 tests
test bar ... ok
test foo ... ok
==================
WARNING: ThreadSanitizer: data race (pid=30969)
  Write of size 8 at 0x7c4c0000ed90 by thread T2:
    #0 free $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:634 (test_runner-d861d6557762b235+0x0000000ce207)
    #1 __rust_deallocate <null> (test_runner-d861d6557762b235+0x000000155663)
    #2 _$LT$alloc..arc..Arc$LT$T$GT$$GT$::drop_slow::hffd2bcc3b04fe791 <null> (test_runner-d861d6557762b235+0x00000001b835)
    #3 _$LT$alloc..arc..Arc$LT$T$GT$$GT$::drop_slow::hffd2bcc3b04fe791 <null> (test_runner-d861d6557762b235+0x00000001b835)
    #4 drop::h62528215215ec760 <null> (test_runner-d861d6557762b235+0x000000029a65)
    #5 drop::h62528215215ec760 <null> (test_runner-d861d6557762b235+0x000000029a65)
    #6 _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::he23b8085b7ff608a <null> (test_runner-d861d6557762b235+0x00000002dc34)
    #7 _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::he23b8085b7ff608a <null> (test_runner-d861d6557762b235+0x00000002dc34)
    #8 std::sys::imp::thread::Thread::new::thread_start::hee5c0f50902195ab <null> (test_runner-d861d6557762b235+0x0000000bcacc)
    #9 std::sys::imp::thread::Thread::new::thread_start::hee5c0f50902195ab <null> (test_runner-d861d6557762b235+0x0000000bcacc)
    #10 __tsan_thread_start_func $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:892 (test_runner-d861d6557762b235+0x0000000caf0b)
    #11 __tsan_thread_start_func $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:892 (test_runner-d861d6557762b235+0x0000000caf0b)

  Previous atomic write of size 8 at 0x7c4c0000ed90 by main thread:
    #0 __tsan_atomic64_fetch_sub $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interface_atomic.cc:623 (test_runner-d861d6557762b235+0x0000001131b0)
    #1 drop::h62528215215ec760 <null> (test_runner-d861d6557762b235+0x000000029a33)
    #2 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288fd)
    #3 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288fd)
    #4 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288fd)
    #5 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288fd)
    #6 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060f65)
    #7 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060f65)
    #8 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060f65)
    #9 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #10 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x000000054a4a)
    #11 test::run_tests_console::h51b8f804fcc03777 <null> (test_runner-d861d6557762b235+0x00000004db4c)
    #12 test::test_main::h30f1de6986f689a9 <null> (test_runner-d861d6557762b235+0x0000000429d0)
    #13 test::test_main_static::h2d9326de74ff96ef <null> (test_runner-d861d6557762b235+0x000000043fe3)
    #14 test_runner::__test::main::h164d7dfa966cbb3f $PWD/src/lib.rs:1 (test_runner-d861d6557762b235+0x000000011362)
    #15 std::panicking::try::do_call::hb1cd11518796216e <null> (test_runner-d861d6557762b235+0x0000000be876)
    #16 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #17 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #18 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #19 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #20 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #21 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #22 main <null> (test_runner-d861d6557762b235+0x0000000113b7)

  Thread T2 'foo' (tid=30972, running) created by main thread at:
    #0 pthread_create $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:902 (test_runner-d861d6557762b235+0x0000000cf546)
    #1 std::sys::imp::thread::Thread::new::h59257a01c2b82abe <null> (test_runner-d861d6557762b235+0x0000000bc1ea)
    #2 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060cd2)
    #3 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #4 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #5 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x000000054a4a)
    #6 test::run_tests_console::h51b8f804fcc03777 <null> (test_runner-d861d6557762b235+0x00000004db4c)
    #7 test::test_main::h30f1de6986f689a9 <null> (test_runner-d861d6557762b235+0x0000000429d0)
    #8 test::test_main_static::h2d9326de74ff96ef <null> (test_runner-d861d6557762b235+0x000000043fe3)
    #9 test_runner::__test::main::h164d7dfa966cbb3f $PWD/src/lib.rs:1 (test_runner-d861d6557762b235+0x000000011362)
    #10 std::panicking::try::do_call::hb1cd11518796216e <null> (test_runner-d861d6557762b235+0x0000000be876)
    #11 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #12 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #13 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #14 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #15 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #16 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #17 main <null> (test_runner-d861d6557762b235+0x0000000113b7)

SUMMARY: ThreadSanitizer: data race ($PWD/target/x86_64-unknown-linux-gnu/debug/deps/test_runner-d861d6557762b235+0x155663) in __rust_deallocate
==================
==================
WARNING: ThreadSanitizer: data race (pid=30969)
  Write of size 8 at 0x7c580000ef40 by main thread:
    #0 free $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:634 (test_runner-d861d6557762b235+0x0000000ce207)
    #1 __rust_deallocate <null> (test_runner-d861d6557762b235+0x000000155663)
    #2 _$LT$alloc..arc..Arc$LT$T$GT$$GT$::drop_slow::hc07f22e2b818fd5e <null> (test_runner-d861d6557762b235+0x00000001b234)
    #3 _$LT$alloc..arc..Arc$LT$T$GT$$GT$::drop_slow::hc07f22e2b818fd5e <null> (test_runner-d861d6557762b235+0x00000001b234)
    #4 drop::hd5322f45aa23e49d <null> (test_runner-d861d6557762b235+0x00000002c005)
    #5 drop::hd5322f45aa23e49d <null> (test_runner-d861d6557762b235+0x00000002c005)
    #6 drop::hb2fbb6e76af21657 <null> (test_runner-d861d6557762b235+0x00000002b98e)
    #7 drop::hb2fbb6e76af21657 <null> (test_runner-d861d6557762b235+0x00000002b98e)
    #8 drop::ha932b14572fc49af <null> (test_runner-d861d6557762b235+0x00000002ae22)
    #9 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x0000000588b1)
    #10 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x0000000588b1)
    #11 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x0000000588b1)
    #12 test::run_tests_console::h51b8f804fcc03777 <null> (test_runner-d861d6557762b235+0x00000004db4c)
    #13 test::test_main::h30f1de6986f689a9 <null> (test_runner-d861d6557762b235+0x0000000429d0)
    #14 test::test_main_static::h2d9326de74ff96ef <null> (test_runner-d861d6557762b235+0x000000043fe3)
    #15 test_runner::__test::main::h164d7dfa966cbb3f $PWD/src/lib.rs:1 (test_runner-d861d6557762b235+0x000000011362)
    #16 std::panicking::try::do_call::hb1cd11518796216e <null> (test_runner-d861d6557762b235+0x0000000be876)
    #17 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #18 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #19 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #20 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #21 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #22 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #23 main <null> (test_runner-d861d6557762b235+0x0000000113b7)

  Previous atomic write of size 8 at 0x7c580000ef40 by thread T2:
    #0 __tsan_atomic64_fetch_sub $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interface_atomic.cc:623 (test_runner-d861d6557762b235+0x0000001131b0)
    #1 drop::hd5322f45aa23e49d <null> (test_runner-d861d6557762b235+0x00000002bfd3)
    #2 drop::hb2fbb6e76af21657 <null> (test_runner-d861d6557762b235+0x00000002b98e)
    #3 drop::hb2fbb6e76af21657 <null> (test_runner-d861d6557762b235+0x00000002b98e)
    #4 drop::hb2fbb6e76af21657 <null> (test_runner-d861d6557762b235+0x00000002b98e)
    #5 drop::hb2fbb6e76af21657 <null> (test_runner-d861d6557762b235+0x00000002b98e)
    #6 drop::ha932b14572fc49af <null> (test_runner-d861d6557762b235+0x00000002ae22)
    #7 std::panicking::try::do_call::heac7d42b6d137ab0 <null> (test_runner-d861d6557762b235+0x00000001e7a7)
    #8 std::panicking::try::do_call::heac7d42b6d137ab0 <null> (test_runner-d861d6557762b235+0x00000001e7a7)
    #9 std::panicking::try::do_call::heac7d42b6d137ab0 <null> (test_runner-d861d6557762b235+0x00000001e7a7)
    #10 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #11 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #12 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #13 _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::he23b8085b7ff608a <null> (test_runner-d861d6557762b235+0x00000002db21)
    #14 _$LT$F$u20$as$u20$alloc..boxed..FnBox$LT$A$GT$$GT$::call_box::he23b8085b7ff608a <null> (test_runner-d861d6557762b235+0x00000002db21)
    #15 std::sys::imp::thread::Thread::new::thread_start::hee5c0f50902195ab <null> (test_runner-d861d6557762b235+0x0000000bcacc)
    #16 std::sys::imp::thread::Thread::new::thread_start::hee5c0f50902195ab <null> (test_runner-d861d6557762b235+0x0000000bcacc)
    #17 std::sys::imp::thread::Thread::new::thread_start::hee5c0f50902195ab <null> (test_runner-d861d6557762b235+0x0000000bcacc)
    #18 std::sys::imp::thread::Thread::new::thread_start::hee5c0f50902195ab <null> (test_runner-d861d6557762b235+0x0000000bcacc)
    #19 __tsan_thread_start_func $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:892 (test_runner-d861d6557762b235+0x0000000caf0b)
    #20 __tsan_thread_start_func $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:892 (test_runner-d861d6557762b235+0x0000000caf0b)

  Thread T2 'foo' (tid=30972, running) created by main thread at:
    #0 pthread_create $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:902 (test_runner-d861d6557762b235+0x0000000cf546)
    #1 std::sys::imp::thread::Thread::new::h59257a01c2b82abe <null> (test_runner-d861d6557762b235+0x0000000bc1ea)
    #2 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060cd2)
    #3 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #4 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #5 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x000000054a4a)
    #6 test::run_tests_console::h51b8f804fcc03777 <null> (test_runner-d861d6557762b235+0x00000004db4c)
    #7 test::test_main::h30f1de6986f689a9 <null> (test_runner-d861d6557762b235+0x0000000429d0)
    #8 test::test_main_static::h2d9326de74ff96ef <null> (test_runner-d861d6557762b235+0x000000043fe3)
    #9 test_runner::__test::main::h164d7dfa966cbb3f $PWD/src/lib.rs:1 (test_runner-d861d6557762b235+0x000000011362)
    #10 std::panicking::try::do_call::hb1cd11518796216e <null> (test_runner-d861d6557762b235+0x0000000be876)
    #11 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #12 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #13 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #14 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #15 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #16 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #17 main <null> (test_runner-d861d6557762b235+0x0000000113b7)

SUMMARY: ThreadSanitizer: data race ($PWD/target/x86_64-unknown-linux-gnu/debug/deps/test_runner-d861d6557762b235+0x155663) in __rust_deallocate
==================

test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured

==================
WARNING: ThreadSanitizer: data race (pid=30969)
  Write of size 8 at 0x7c540000ef60 by thread T2:
    #0 free $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:634 (test_runner-d861d6557762b235+0x0000000ce207)
    #1 __rust_deallocate <null> (test_runner-d861d6557762b235+0x000000155663)
    #2 _$LT$alloc..arc..Arc$LT$T$GT$$GT$::drop_slow::hff346d8fec1237f8 <null> (test_runner-d861d6557762b235+0x00000009fbc4)
    #3 _$LT$alloc..arc..Arc$LT$T$GT$$GT$::drop_slow::hff346d8fec1237f8 <null> (test_runner-d861d6557762b235+0x00000009fbc4)
    #4 drop::h5f9d93ca09665cd2 <null> (test_runner-d861d6557762b235+0x0000000a395d)
    #5 drop::h5f9d93ca09665cd2 <null> (test_runner-d861d6557762b235+0x0000000a395d)
    #6 drop::h1a3c63fc24632ae0 <null> (test_runner-d861d6557762b235+0x0000000a34bf)
    #7 drop::h1a3c63fc24632ae0 <null> (test_runner-d861d6557762b235+0x0000000a34bf)
    #8 drop::h1a3c63fc24632ae0 <null> (test_runner-d861d6557762b235+0x0000000a34bf)
    #9 std::sys::imp::fast_thread_local::destroy_value::hd0a16359cb28bafd <null> (test_runner-d861d6557762b235+0x0000000b9518)
    #10 std::sys::imp::fast_thread_local::destroy_value::hd0a16359cb28bafd <null> (test_runner-d861d6557762b235+0x0000000b9518)
    #11 std::sys::imp::fast_thread_local::destroy_value::hd0a16359cb28bafd <null> (test_runner-d861d6557762b235+0x0000000b9518)
    #12 __GI___call_tls_dtors <null> (libc.so.6+0x000000035efe)
    #13 __GI___call_tls_dtors <null> (libc.so.6+0x000000035efe)
    #14 __GI___call_tls_dtors <null> (libc.so.6+0x000000035efe)

  Previous atomic write of size 8 at 0x7c540000ef60 by main thread:
    #0 __tsan_atomic64_fetch_sub $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interface_atomic.cc:623 (test_runner-d861d6557762b235+0x0000001131b0)
    #1 drop::h76fdafd6e6eb83b7 <null> (test_runner-d861d6557762b235+0x00000002a0fb)
    #2 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288e9)
    #3 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288e9)
    #4 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288e9)
    #5 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288e9)
    #6 drop::h26c9032b0f649bf6 <null> (test_runner-d861d6557762b235+0x0000000288e9)
    #7 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060f65)
    #8 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060f65)
    #9 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #10 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x000000054a4a)
    #11 test::run_tests_console::h51b8f804fcc03777 <null> (test_runner-d861d6557762b235+0x00000004db4c)
    #12 test::test_main::h30f1de6986f689a9 <null> (test_runner-d861d6557762b235+0x0000000429d0)
    #13 test::test_main_static::h2d9326de74ff96ef <null> (test_runner-d861d6557762b235+0x000000043fe3)
    #14 test_runner::__test::main::h164d7dfa966cbb3f $PWD/src/lib.rs:1 (test_runner-d861d6557762b235+0x000000011362)
    #15 std::panicking::try::do_call::hb1cd11518796216e <null> (test_runner-d861d6557762b235+0x0000000be876)
    #16 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #17 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #18 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #19 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #20 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #21 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #22 main <null> (test_runner-d861d6557762b235+0x0000000113b7)

  Thread T2 'foo' (tid=30972, running) created by main thread at:
    #0 pthread_create $RUST_SRC/src/compiler-rt/lib/tsan/rtl/tsan_interceptors.cc:902 (test_runner-d861d6557762b235+0x0000000cf546)
    #1 std::sys::imp::thread::Thread::new::h59257a01c2b82abe <null> (test_runner-d861d6557762b235+0x0000000bc1ea)
    #2 test::run_test::run_test_inner::h68ccb59ad7634829 <null> (test_runner-d861d6557762b235+0x000000060cd2)
    #3 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #4 test::run_test::hbe43efe8762b5fcb <null> (test_runner-d861d6557762b235+0x00000005f4bd)
    #5 test::run_tests::h007db7d7a30e05b9 <null> (test_runner-d861d6557762b235+0x000000054a4a)
    #6 test::run_tests_console::h51b8f804fcc03777 <null> (test_runner-d861d6557762b235+0x00000004db4c)
    #7 test::test_main::h30f1de6986f689a9 <null> (test_runner-d861d6557762b235+0x0000000429d0)
    #8 test::test_main_static::h2d9326de74ff96ef <null> (test_runner-d861d6557762b235+0x000000043fe3)
    #9 test_runner::__test::main::h164d7dfa966cbb3f $PWD/src/lib.rs:1 (test_runner-d861d6557762b235+0x000000011362)
    #10 std::panicking::try::do_call::hb1cd11518796216e <null> (test_runner-d861d6557762b235+0x0000000be876)
    #11 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #12 __rust_maybe_catch_panic <null> (test_runner-d861d6557762b235+0x0000000c2363)
    #13 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #14 std::rt::lang_start::h0661a76cd511ea2d <null> (test_runner-d861d6557762b235+0x0000000c0487)
    #15 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #16 main <null> (test_runner-d861d6557762b235+0x0000000113b7)
    #17 main <null> (test_runner-d861d6557762b235+0x0000000113b7)

SUMMARY: ThreadSanitizer: data race ($PWD/target/x86_64-unknown-linux-gnu/debug/deps/test_runner-d861d6557762b235+0x155663) in __rust_deallocate
==================
ThreadSanitizer: reported 3 warnings
error: test failed

Meta

TODO Sanitizers are not yet in tree. (cf. #38699)

cc @alexcrichton @brson

Activity

  1. alexcrichton commented on Feb 7, 2017

    @alexcrichton
    alexcrichton
    on Feb 7, 2017
    Member

    Like with #39610 I'd be tempted to say these are false positives, but these stack traces don't look so familiar so I'm not certain of that

  2. parched commented on Feb 8, 2017

    @parched
    parched
    on Feb 8, 2017
    Contributor

    This will be a false positive because drop_slow uses a fence, and tsan doesn't work with fences.

  3. Mark-Simulacrum commented on May 22, 2017

    @Mark-Simulacrum
    Mark-Simulacrum
    on May 22, 2017
    Member

    So I take it this isn't actually a problem since we're just using a fence and tsan doesn't support that? Should we close?

  4. kennytm commented on May 22, 2017

    @kennytm
    kennytm
    on May 22, 2017
    Member

    Can the false-positive be worked-around by manually annotating the happens-before relationship? See https://stackoverflow.com/questions/37552866/why-does-threadsanitizer-report-a-race-with-this-lock-free-example.

  5. parched commented on May 22, 2017

    @parched
    parched
    on May 22, 2017
    Contributor

    Well, maybe if we could conditionally build without the fence (rework to use a load/store instead) when tsan is enabled then the error wouldn't be seen.

  6. Mark-Simulacrum
    added
    A-libtestArea: `#[test]` / the `test` library
    A-sanitizersArea: Sanitizers for correctness and code quality
    on Jun 23, 2017
  7. Mark-Simulacrum
    added
    C-bugCategory: This is a bug.
    on Jul 27, 2017
  8. Dylan-DPC-zz
    added 2 commits that reference this issue on Mar 20, 2020

    Rollup merge of rust-lang#65097 - tmiasko:arc, r=Amanieu

    8044d41

    Rollup merge of rust-lang#65097 - tmiasko:arc, r=Amanieu

    111301d
  9. Centril
    added 2 commits that reference this issue on Mar 21, 2020

    Rollup merge of rust-lang#65097 - tmiasko:arc, r=Amanieu

    b7c1bae

    Rollup merge of rust-lang#65097 - tmiasko:arc, r=Amanieu

    4b91729
  10. bors
    closed this as completedin 4b91729on Mar 21, 2020
  11. PCfVW
    added 2 commits that reference this issue on Aug 7, 2026

    ci(tsan): drop -Zbuild-std (documented incompatible with cargo test)

    3695d80

    ci(tsan): suppress the libtest channel false positive

    76fcd5a
  12. ness-e
    added a commit that references this issue on Oct 3, 2026

    ci: FIND-227 — TSan: decisión status quo (best-effort) documentada

    a63c9d0
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Metadata

Metadata

Assignees

No one assigned

    Labels

    A-libtestArea: `#[test]` / the `test` libraryA-sanitizersArea: Sanitizers for correctness and code qualityC-bugCategory: This is a bug.

    Type

    No type

    Projects

    No projects

      Milestone

      No milestone

      Relationships

      None yet

      Development

      No branches or pull requests

      Issue actions