Hi experts,
asan report segment fault error for memset line in the simple code below,
valgrind doesn't report it, could you explain the reason?
1 #include <signal.h>
2 #include <stdio.h>
3 #include <stdlib.h>
4 #include <string.h>
5
6
7 int main(void)
8 {
9 struct sigaction sa;
10
11 memset(&sa, 0, sizeof(sigaction));
12 sigemptyset(&sa.sa_mask);
13 // sa.sa_flags = SA_SIGINFO;
14
15 // sigaction(SIGSEGV, &sa, NULL);
16
17 return 0;
18 }
root@terry-lx:/tmp# ./segerror1
ASAN:SIGSEGV
=================================================================
==26565== ERROR: AddressSanitizer: SEGV on unknown address 0x17f91a12 (pc
0x0804868b sp 0xbfc8d060 bp 0xbfc8d158 T0)
AddressSanitizer can not provide additional info.
#0 0x804868a (/tmp/segerror1+0x804868a)
#1 0xb5fda4d2 (/lib/i386-linux-gnu/libc-2.15.so+0x194d2)
#2 0x8048510 (/tmp/segerror1+0x8048510)
==26565== ABORTING
root@test-lx:/tmp# ./segerror1 2>&1 | ./asan_symbolize.py | c++filt
/tmp/llvm-3.4/llvm/Release+Asserts/bin/llvm-symbolizer
--use-symbol-table=true --demangle=False --functions=true --inlining=true
ASAN:SIGSEGV
=================================================================
==26566== ERROR: AddressSanitizer: SEGV on unknown address 0x17ff0c3a (pc
0x0804868b sp 0xbff861a0 bp 0xbff86298 T0)
AddressSanitizer can not provide additional info.
#0 0x804868a (/tmp/segerror1+0x804868a)
/tmp/segerror1 0x804868a
#0 0x804868a in main /tmp/./segerror1.c:11:0
#1 0xb60184d2 (/lib/i386-linux-gnu/libc-2.15.so+0x194d2)
/lib/i386-linux-gnu/libc-2.15.so 0x194d2
addr2line -f -e /lib/i386-linux-gnu/libc-2.15.so
/lib/i386-linux-gnu/libc-2.15.so 0x194d2
#1 0xb60184d2 in __libc_start_main
/build/buildd/eglibc-2.15/csu/libc-start.c:226
#2 0x8048510 (/tmp/segerror1+0x8048510)
/tmp/segerror1 0x8048510
addr2line -f -e /tmp/segerror1
/tmp/segerror1 0x8048510
#2 0x8048510 in _start ??:0
==26566== ABORTING
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