Package: strace
Version: 4.5.12-1
Severity: normal
Steps to reproduce:
1) cat > testcase.java << EOF
public class testcase {
public static void main(String[] args) {
new testcase();
}
public testcase() {
System.out.println("hello world");
}
}
EOF
2) jikes-sablevm testcase.java
3) strace -s32768 -o strace.log -f jamvm testcase
Expected results:
3) jamvm runs normally and prints "hello world", strace logs all syscalls to
strace.log
Actual results:
3) jamvm prints nothing and strace crashes. Last line
of strace.log (75 lines total) is very long
(tail -1 strace.log | wc --bytes says 24576) and starts with
28256 _sysctl({{CTL_KERN, KERN_VERSION, 0, 91b1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0
Note that on my system
"strace -s19044 -o strace.log -f jamvm testcase" does not crash but
"strace -s19045 -o strace.log -f jamvm testcase" does.
I think the crash happens in system.c on line 1926 and can be
prevented with the following fix:
--- system.c.orig 2005-11-15 02:09:43.000000000 +0200
+++ system.c 2005-11-15 02:13:14.000000000 +0200
@@ -1921,7 +1921,7 @@
goto out;
}
out:
- max_cnt = abbrev(tcp) ? max_strlen : info.nlen;
+ max_cnt = abbrev(tcp) && max_strlen < info.nlen ? max_strlen :
info.nlen;
while (cnt < max_cnt)
tprintf(", %x", name[cnt++]);
if (cnt < info.nlen)
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.4.29sauna
Locale: LANG=C, LC_CTYPE=fi_FI (charmap=ISO-8859-1)
Versions of packages strace depends on:
ii libc6 2.3.5-8 GNU C Library: Shared libraries an
strace recommends no packages.
-- no debconf information
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