ASAN doesn't work

[tycho]

steven@localhost ~
$ cat test2.c
int main(int argc, char **argv)
{
        return 0;
}
steven@localhost ~
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.8/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.5-2ubuntu1~14.04.1' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.8.5 (Ubuntu 4.8.5-2ubuntu1~14.04.1)
steven@localhost ~
$ gcc -fsanitize=address -O0 -ggdb -o test2 test2.c
steven@localhost ~
$ ./test2
==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
    #0 0x7ff5fcc8231d==1910== AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_linux.cc:403 "((IsOnOf(*current_++, 's', 'p'))) != (0)" (0x0, 0x0)
^C
steven@localhost ~
$

Note that the ASAN printouts would have kept printing if I hadn't aborted with Ctrl-C.

[sunilmut]

Thanks for reporting this. Could you grab a strace here to figure out what part is failing?

[tycho]

Looks related to #120.

278   munmap(0x7ff5fbd10000, 16384)     = 0
278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbd10000
278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcd0000
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000
278   write(2, "    #0 0x7ff5fcc8231d", 21) = 21
278   munmap(0x7ff5fbcc0000, 16384)     = 0
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000
278   write(2, "==278== AddressSanitizer CHECK f"..., 162) = 162
278   munmap(0x7ff5fbcc0000, 16384)     = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   munmap(0x7ff5fbcc0000, 4096)      = 0
278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   read(3, "fc1c0000-7ff5fc1c2000 rw-- 00000"..., 4096) = 4096
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   munmap(0x7ff5fbcc0000, 8192)      = 0
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   read(3, "fc1c0000-7ff5fc1c2000 rw-- 00000"..., 4096) = 4096
278   read(3, "fda1000 rw-- 00000000 00:00 0\n7f"..., 4096) = 1330
278   read(3, 0x7ff5fbcc2532, 4096)     = 0
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcb0000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   munmap(0x7ff5fbcb0000, 4096)      = 0
278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcb0000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   read(3, "fc1b0000-7ff5fc1b1000 rw-- 00000"..., 4096) = 4096
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   munmap(0x7ff5fbcb0000, 8192)      = 0
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcb0000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   read(3, "fc1b0000-7ff5fc1b1000 rw-- 00000"..., 4096) = 4096
278   read(3, "fd94000 rw-- 00000000 00:00 0\n7f"..., 4096) = 1378
278   read(3, 0x7ff5fbcb2562, 4096)     = 0
278   close(3)                          = 0
278   munmap(0x7ff5fbce0000, 16384)     = 0
278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbce0000
278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbca0000
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000
278   write(2, "    #0 0x7ff5fcc8231d", 21) = 21
278   munmap(0x7ff5fbc90000, 16384)     = 0
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000
278   write(2, "==278== AddressSanitizer CHECK f"..., 162) = 162
278   munmap(0x7ff5fbc90000, 16384)     = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   munmap(0x7ff5fbc90000, 4096)      = 0
278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   read(3, "fc190000-7ff5fc192000 rw-- 00000"..., 4096) = 4096
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   munmap(0x7ff5fbc90000, 8192)      = 0
278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   read(3, "fc190000-7ff5fc192000 rw-- 00000"..., 4096) = 4096
278   read(3, "fd71000 rw-- 00000000 00:00 0\n7f"..., 4096) = 1474
278   read(3, 0x7ff5fbc925c2, 4096)     = 0
278   close(3)                          = 0
278   open("/proc/self/maps", O_RDONLY) = 3
278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc80000
278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096
278   --- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} ---                                                                                                                                                                                                                                   278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbd10000                                                                                                                                                                               278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcd0000                                                                                                                                                                               278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000                                                                                                                                                                              278   write(2, "    #0 0x7ff5fcc8231d", 21) = 21                                                                                                                                                                                                                              278   munmap(0x7ff5fbcc0000, 16384)     = 0                                                                                                                                                                                                                                   278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000                                                                                                                                                                              278   write(2, "==278== AddressSanitizer CHECK f"..., 162) = 162                                                                                                                                                                                                              278   munmap(0x7ff5fbcc0000, 16384)     = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   munmap(0x7ff5fbcc0000, 4096)      = 0                                                                                                                                                                                                                                   278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fc1c0000-7ff5fc1c2000 rw-- 00000"..., 4096) = 4096                                                                                                                                                                                                             278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   munmap(0x7ff5fbcc0000, 8192)      = 0                                                                                                                                                                                                                                   278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcc0000                                                                                                                                                                              278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fc1c0000-7ff5fc1c2000 rw-- 00000"..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fda1000 rw-- 00000000 00:00 0\n7f"..., 4096) = 1330                                                                                                                                                                                                            278   read(3, 0x7ff5fbcc2532, 4096)     = 0                                                                                                                                                                                                                                   278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcb0000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   munmap(0x7ff5fbcb0000, 4096)      = 0                                                                                                                                                                                                                                   278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcb0000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fc1b0000-7ff5fc1b1000 rw-- 00000"..., 4096) = 4096                                                                                                                                                                                                             278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   munmap(0x7ff5fbcb0000, 8192)      = 0                                                                                                                                                                                                                                   278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbcb0000                                                                                                                                                                              278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fc1b0000-7ff5fc1b1000 rw-- 00000"..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fd94000 rw-- 00000000 00:00 0\n7f"..., 4096) = 1378                                                                                                                                                                                                            278   read(3, 0x7ff5fbcb2562, 4096)     = 0                                                                                                                                                                                                                                   278   close(3)                          = 0                                                                                                                                                                                                                                   278   munmap(0x7ff5fbce0000, 16384)     = 0                                                                                                                                                                                                                                   278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbce0000                                                                                                                                                                               278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbca0000                                                                                                                                                                               278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000                                                                                                                                                                              278   write(2, "    #0 0x7ff5fcc8231d", 21) = 21                                                                                                                                                                                                                              278   munmap(0x7ff5fbc90000, 16384)     = 0                                                                                                                                                                                                                                   278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000                                                                                                                                                                              278   write(2, "==278== AddressSanitizer CHECK f"..., 162) = 162                                                                                                                                                                                                              278   munmap(0x7ff5fbc90000, 16384)     = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   munmap(0x7ff5fbc90000, 4096)      = 0                                                                                                                                                                                                                                   278   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fc190000-7ff5fc192000 rw-- 00000"..., 4096) = 4096                                                                                                                                                                                                             278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   munmap(0x7ff5fbc90000, 8192)      = 0                                                                                                                                                                                                                                   278   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc90000                                                                                                                                                                              278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fc190000-7ff5fc192000 rw-- 00000"..., 4096) = 4096                                                                                                                                                                                                             278   read(3, "fd71000 rw-- 00000000 00:00 0\n7f"..., 4096) = 1474                                                                                                                                                                                                            278   read(3, 0x7ff5fbc925c2, 4096)     = 0                                                                                                                                                                                                                                   278   close(3)                          = 0                                                                                                                                                                                                                                   278   open("/proc/self/maps", O_RDONLY) = 3                                                                                                                                                                                                                                   278   mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff5fbc80000                                                                                                                                                                               278   read(3, "00400000-00401000 r-x- 00000000 "..., 4096) = 4096                                                                                                                                                                                                             278   --- SIGINT {si_signo=SIGINT, si_code=SI_KERNEL} --- 

It keeps reading /proc/self/maps in hoping -something- has changed, but I'm not sure what it's looking for.

[Meinersbur]

Entry for same bug in asan bug tracker: google/sanitizers#708

Still occurs on Windows 14393.105

[kasper93]

Some information about the issue. ASAN expects procmaps to be formatted as follows
08048000-08056000 r-xp 00000000 03:0c 64593 /foo/bar
It fails on the last char of permissions part. It expects either s or p. On Windows information whether mapping is shared or private is not available and - is shown instead, which triggers assert here https://github.com/llvm-mirror/compiler-rt/blob/74c8f498fa128f0cd4eb97d603c017f250dd3694/lib/sanitizer_common/sanitizer_procmaps_linux.cc#L59

Can we expect this to be fixed? Seems like not a big bug to fix. Mapping need to be either private or shared so showing - is just silly.

Example of output on Windows:

$ cat /proc/self/maps
00400000-0040c000 r-x- 00000000 00:00 7623                       /bin/cat
0060b000-0060c000 r--- 0000b000 00:00 7623                       /bin/cat
0060c000-0060d000 rw-- 0000c000 00:00 7623                       /bin/cat
00bcb000-00bec000 rw-- 00000000 00:00 0                          [heap]
7f1976a30000-7f1976bef000 r-x- 00000000 00:00 202985             /lib/x86_64-linux-gnu/libc-2.23.so
7f1976bef000-7f1976bf8000 ---- 001bf000 00:00 202985             /lib/x86_64-linux-gnu/libc-2.23.so
7f1976bf8000-7f1976def000 ---- 00000000 00:00 0
7f1976def000-7f1976df3000 r--- 001bf000 00:00 202985             /lib/x86_64-linux-gnu/libc-2.23.so
7f1976df3000-7f1976df5000 rw-- 001c3000 00:00 202985             /lib/x86_64-linux-gnu/libc-2.23.so
7f1976df5000-7f1976df9000 rw-- 00000000 00:00 0
7f1976e00000-7f1976e26000 r-x- 00000000 00:00 203030             /lib/x86_64-linux-gnu/ld-2.23.so
7f1977000000-7f1977022000 rw-- 00000000 00:00 0
7f1977025000-7f1977026000 r--- 00025000 00:00 203030             /lib/x86_64-linux-gnu/ld-2.23.so
7f1977026000-7f1977027000 rw-- 00026000 00:00 203030             /lib/x86_64-linux-gnu/ld-2.23.so
7f1977027000-7f1977028000 rw-- 00000000 00:00 0
7f1977028000-7f19771c0000 r--- 00000000 00:00 22408              /usr/lib/locale/locale-archive
7f19771c0000-7f19771c1000 rw-- 00000000 00:00 0
7f19771d0000-7f19771d1000 rw-- 00000000 00:00 0
7f19771e0000-7f19771e1000 rw-- 00000000 00:00 0
7f19771f0000-7f19771f2000 rw-- 00000000 00:00 0
7ffffe41e000-7ffffec1e000 rw-- 00000000 00:00 0                  [stack]
7fffff2d8000-7fffff2d9000 r-x- 00000000 00:00 0                  [vdso]

[kasper93]

I changed ASAN to accept Window's proc maps format. But it is still unusable. ASAN maps 20TB of virtual memory and it kills WSL. It is so slow that asan init code takes hours. Probably the same issue as #1671

[MikeGitb]

Would be great, if we could run ASAN (and the other sanitizers) on WSL.

[firewave]

Using 16299 it seems to get further now.

My code

#include <string.h>

int main() {
	char arr[2];
	strcpy(arr, "str");
	return 0;
}

Using the following command-line

gcc -fsanitize=address crash.c -o crash

Reports this

==3969==ERROR: AddressSanitizer failed to allocate 0xdfff0001000 (15392894357504) bytes at address 2008fff7000 (errno: 12)
==3969==ReserveShadowMemoryRange failed while trying to map 0xdfff0001000 bytes. Perhaps you're using ulimit -v
Aborted (core dumped)

The strange output:
strace.log

Seems like the interesting part

setrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=0}) = 0
mmap(0x7fff7000, 268435456, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7fff7000
mmap(0x2008fff7000, 15392894357504, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = -1 ENOMEM (Cannot allocate memory)

The same issue seems to apply using MemorySanitizer with clang:

==6442==ERROR: MemorySanitizer failed to allocate 0xf0000000000 (16492674416640) bytes at address 10000000000 (errno: 12)

Using

clang -fsanitize=memory crash.c -o crash

Both of these return immediately.

The problem with the long start-up because of mapping memory still seems to happen when using ThreadSanitizer (GCC and clang) though.

Using

gcc -fsanitize=thread crash.c -o crash

Or

clang -fsanitize=thread crash.c -o crash

[zeux]

Looking into this a bit, the behavior of mmap for large regions with MAP_NORESERVE is somewhat odd.

This code fails on my system with #if 0 but succeeds, although mmap & mprotect take tens of seconds each, with #if 1:

#include <sys/mman.h>
#include <stdio.h>

int main()
{
	size_t size = 0xdfff0001000;

#if 1
	void* ptr = mmap(0, size, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0);
	printf("mmap => %p\n", ptr);
	int rc = mprotect(ptr, size, PROT_READ|PROT_WRITE);
	printf("mprotect => %d\n", rc);
#else
	void* ptr = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0);
	printf("mmap => %p\n", ptr);
#endif
}

As far as I can tell the memory mapped is completely usable after mprotect; it might be a reasonable workaround for asan even though it takes close to a minute to start up. This is on Windows 10 build 16299.19

[bitcrazed]

Hey all - suggestion from one of our devs: For the memory issue, try setting /proc/sys/vm/overcommit_memory to 1.

And do let us know if this helps!

/cc @MikeGitb