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Got a SIGABRT when calling fds_client_init with a nonexistent conf file #16

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Madokakaroto opened this issue Nov 22, 2017 · 1 comment

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@Madokakaroto
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auto result = fdfs_client_init("/etc/fdf/client.conf");
I compiled it on ubuntu with gcc 6.2, and my program crashed.
I guess there may be something wrong with your usage of calling sprintf.

The dump log is here:
*** buffer overflow detected ***: ./test_fdfs terminated
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7329f)[0x7f56e4a7e29f]
/lib/x86_64-linux-gnu/libc.so.6(__fortify_fail+0x5c)[0x7f56e4b15bbc]
/lib/x86_64-linux-gnu/libc.so.6(+0x109a90)[0x7f56e4b14a90]
/lib/x86_64-linux-gnu/libc.so.6(+0x108f99)[0x7f56e4b13f99]
/lib/x86_64-linux-gnu/libc.so.6(_IO_default_xsputn+0xbc)[0x7f56e4a8660c]
/lib/x86_64-linux-gnu/libc.so.6(_IO_vfprintf+0xd0)[0x7f56e4a54d10]
/lib/x86_64-linux-gnu/libc.so.6(__vsprintf_chk+0x84)[0x7f56e4b14024]
/lib/x86_64-linux-gnu/libc.so.6(__sprintf_chk+0x7d)[0x7f56e4b13f7d]
/usr/lib/libfastcommon.so(log_it_ex2+0x1a0)[0x7f56e45c9090]
/usr/lib/libfastcommon.so(logError+0x130)[0x7f56e45ca830]
/usr/lib/libfastcommon.so(getFileContent+0x214)[0x7f56e45bee64]
/usr/lib/libfastcommon.so(+0x12112)[0x7f56e45c4112]
/usr/lib/libfastcommon.so(iniLoadFromFileEx+0x4c2)[0x7f56e45c59c2]
/usr/lib/libfdfsclient.so(fdfs_client_init_ex+0x31)[0x7f56e50ef69c]
./test_fdfs(main+0x32)[0x400b78]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5)[0x7f56e4a2cf45]
./test_fdfs[0x400a79]
======= Memory map: ========
00400000-00401000 r-xp 00000000 08:02 6584315 /home/buke/programming/test/build/test_fdfs
00601000-00602000 r--p 00001000 08:02 6584315 /home/buke/programming/test/build/test_fdfs
00602000-00603000 rw-p 00002000 08:02 6584315 /home/buke/programming/test/build/test_fdfs
02135000-02167000 rw-p 00000000 00:00 0 [heap]
7f56e4095000-7f56e40ab000 r-xp 00000000 08:02 4195223 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f56e40ab000-7f56e42aa000 ---p 00016000 08:02 4195223 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f56e42aa000-7f56e42ab000 r--p 00015000 08:02 4195223 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f56e42ab000-7f56e42ac000 rw-p 00016000 08:02 4195223 /lib/x86_64-linux-gnu/libgcc_s.so.1
7f56e42ac000-7f56e43b1000 r-xp 00000000 08:02 4194403 /lib/x86_64-linux-gnu/libm-2.19.so
7f56e43b1000-7f56e45b0000 ---p 00105000 08:02 4194403 /lib/x86_64-linux-gnu/libm-2.19.so
7f56e45b0000-7f56e45b1000 r--p 00104000 08:02 4194403 /lib/x86_64-linux-gnu/libm-2.19.so
7f56e45b1000-7f56e45b2000 rw-p 00105000 08:02 4194403 /lib/x86_64-linux-gnu/libm-2.19.so
7f56e45b2000-7f56e45eb000 r-xp 00000000 08:02 8150219 /usr/lib/libfastcommon.so
7f56e45eb000-7f56e47ea000 ---p 00039000 08:02 8150219 /usr/lib/libfastcommon.so
7f56e47ea000-7f56e47eb000 r--p 00038000 08:02 8150219 /usr/lib/libfastcommon.so
7f56e47eb000-7f56e47ec000 rw-p 00039000 08:02 8150219 /usr/lib/libfastcommon.so
7f56e47ec000-7f56e47ed000 rw-p 00000000 00:00 0
7f56e47ed000-7f56e4806000 r-xp 00000000 08:02 4195432 /lib/x86_64-linux-gnu/libpthread-2.19.so
7f56e4806000-7f56e4a05000 ---p 00019000 08:02 4195432 /lib/x86_64-linux-gnu/libpthread-2.19.so
7f56e4a05000-7f56e4a06000 r--p 00018000 08:02 4195432 /lib/x86_64-linux-gnu/libpthread-2.19.so
7f56e4a06000-7f56e4a07000 rw-p 00019000 08:02 4195432 /lib/x86_64-linux-gnu/libpthread-2.19.so
7f56e4a07000-7f56e4a0b000 rw-p 00000000 00:00 0
7f56e4a0b000-7f56e4bc5000 r-xp 00000000 08:02 4198551 /lib/x86_64-linux-gnu/libc-2.19.so
7f56e4bc5000-7f56e4dc5000 ---p 001ba000 08:02 4198551 /lib/x86_64-linux-gnu/libc-2.19.so
7f56e4dc5000-7f56e4dc9000 r--p 001ba000 08:02 4198551 /lib/x86_64-linux-gnu/libc-2.19.so
7f56e4dc9000-7f56e4dcb000 rw-p 001be000 08:02 4198551 /lib/x86_64-linux-gnu/libc-2.19.so
7f56e4dcb000-7f56e4dd0000 rw-p 00000000 00:00 0
7f56e4dd0000-7f56e4ed6000 r-xp 00000000 08:02 8135222 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7f56e4ed6000-7f56e50d5000 ---p 00106000 08:02 8135222 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7f56e50d5000-7f56e50dd000 r--p 00105000 08:02 8135222 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7f56e50dd000-7f56e50df000 rw-p 0010d000 08:02 8135222 /usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.22
7f56e50df000-7f56e50e2000 rw-p 00000000 00:00 0
7f56e50e2000-7f56e50f9000 r-xp 00000000 08:02 8150271 /usr/lib/libfdfsclient.so
7f56e50f9000-7f56e52f9000 ---p 00017000 08:02 8150271 /usr/lib/libfdfsclient.so
7f56e52f9000-7f56e52fa000 r--p 00017000 08:02 8150271 /usr/lib/libfdfsclient.so
7f56e52fa000-7f56e52fb000 rw-p 00018000 08:02 8150271 /usr/lib/libfdfsclient.so
7f56e52fb000-7f56e531e000 r-xp 00000000 08:02 4195434 /lib/x86_64-linux-gnu/ld-2.19.so
7f56e54fd000-7f56e5504000 rw-p 00000000 00:00 0
7f56e551a000-7f56e551d000 rw-p 00000000 00:00 0
7f56e551d000-7f56e551e000 r--p 00022000 08:02 4195434 /lib/x86_64-linux-gnu/ld-2.19.so
7f56e551e000-7f56e551f000 rw-p 00023000 08:02 4195434 /lib/x86_64-linux-gnu/ld-2.19.so
7f56e551f000-7f56e5520000 rw-p 00000000 00:00 0
7ffe370f2000-7ffe37113000 rw-p 00000000 00:00 0 [stack]
7ffe3711d000-7ffe3711f000 r--p 00000000 00:00 0 [vvar]
7ffe3711f000-7ffe37121000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Aborted (core dumped)

@happyfish100
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you should call log_init() first. such as:

log_init();
auto result = fdfs_client_init("/etc/fdf/client.conf");

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