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f962a0354

Denis Vlasenko
Denis Vlasenko
2007-11-23
FAILED Duration: 14s

Subject

hush: plug memory leak

Binary

No binary (build failed)

Architecture & Compiler Flags

Architecture: x86_64-linux-gnu Compiler: gcc (Ubuntu 11.4.0-1ubuntu1~22.04.3) 11.4.0

—

Build Log

(log yok)

Commit Diff GitHub →

shell/hush.c +38 -5shell/hush_leaktool.sh +13 -0shell/hush_test/hush-z_slow/leak_var.tests +39 -17shell/hush_test/run-all +1 -0
shell/hush.c+38 -5
@@ -144,6 +144,40 @@ static const char *indenter(int i)
#endif
+/*
+ * Leak hunting. Use hush_leaktool.sh for post-processing.
+ */
+#ifdef FOR_HUSH_LEAKTOOL
+void *xxmalloc(int lineno, size_t size)
+{
+ void *ptr = xmalloc((size + 0xff) & ~0xff);
+ fprintf(stderr, "line %d: malloc %p\n", lineno, ptr);
+ return ptr;
+}
+void *xxrealloc(int lineno, void *ptr, size_t size)
+{
+ ptr = xrealloc(ptr, (size + 0xff) & ~0xff);
+ fprintf(stderr, "line %d: realloc %p\n", lineno, ptr);
+ return ptr;
+}
+char *xxstrdup(int lineno, const char *str)
+{
+ char *ptr = xstrdup(str);
+ fprintf(stderr, "line %d: strdup %p\n", lineno, ptr);
+ return ptr;
+}
+void xxfree(void *ptr)
+{
+ fprintf(stderr, "free %p\n", ptr);
+ free(ptr);
+}
+#define xmalloc(s) xxmalloc(__LINE__, s)
+#define xrealloc(p, s) xxrealloc(__LINE__, p, s)
+#define xstrdup(s) xxstrdup(__LINE__, s)
+#define free(p) xxfree(p)
+#endif
+
+
#if !ENABLE_HUSH_INTERACTIVE
#undef ENABLE_FEATURE_EDITING
#define ENABLE_FEATURE_EDITING 0
@@ -256,7 +290,6 @@ struct child_prog {
smallint subshell; /* flag, non-zero if group must be forked */
smallint is_stopped; /* is the program currently running? */
struct redir_struct *redirects; /* I/O redirections */
- char **glob_result; /* result of parameter globbing */
struct pipe *family; /* pointer back to the child's parent pipe */
//sp counting seems to be broken... so commented out, grep for '//sp:'
//sp: int sp; /* number of SPECIAL_VAR_SYMBOL */
@@ -2198,8 +2231,8 @@ static int free_pipe(struct pipe *pi, int indent)
for (a = 0, p = child->argv; *p; a++, p++) {
debug_printf_clean("%s argv[%d] = %s\n", indenter(indent), a, *p);
}
- free_strings(child->glob_result);
- child->glob_result = NULL;
+ free_strings(child->argv);
+ child->argv = NULL;
} else if (child->group) {
debug_printf_clean("%s begin group (subshell:%d)\n", indenter(indent), child->subshell);
ret_code = free_pipe_list(child->group, indent+3);
@@ -2333,6 +2366,7 @@ static int xglob(o_string *dest, char ***pglob)
debug_printf("globhack returned %d\n", gr);
/* quote removal, or more accurately, backslash removal */
*pglob = globhack(dest->data, *pglob);
+ globfree(&globdata);
return 0;
}
if (gr != 0) { /* GLOB_ABORTED ? */
@@ -2340,7 +2374,6 @@ static int xglob(o_string *dest, char ***pglob)
}
if (globdata.gl_pathv && globdata.gl_pathv[0])
*pglob = add_strings_to_strings(1, *pglob, globdata.gl_pathv);
- /* globprint(glob_target); */
globfree(&globdata);
return gr;
}
@@ -3001,6 +3034,7 @@ static int done_word(o_string *dest, struct p_context *ctx)
b_reset(dest);
if (ctx->pending_redirect) {
+ /* NB: don't free_strings(ctx->pending_redirect->glob_word) here */
if (ctx->pending_redirect->glob_word
&& ctx->pending_redirect->glob_word[0]
&& ctx->pending_redirect->glob_word[1]
@@ -3056,7 +3090,6 @@ static int done_command(struct p_context *ctx)
/*child->argv = NULL;*/
/*child->is_stopped = 0;*/
/*child->group = NULL;*/
- /*child->glob_result = NULL;*/
child->family = pi;
//sp: /*child->sp = 0;*/
//pt: child->parse_type = ctx->parse_type;
shell/hush_leaktool.sh+13 -0
@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# hush's stderr with leak debug enabled
+output=output
+
+freelist=`grep 'free 0x' "$output" | cut -d' ' -f2 | sort | uniq | xargs`
+
+grep -v free "$output" >temp1
+for freed in $freelist; do
+ echo Dropping $freed
+ cat temp1 | grep -v $freed >temp2
+ mv temp2 temp1
+done
shell/hush_test/hush-z_slow/leak_var.tests+39 -17
@@ -1,24 +1,46 @@
pid=$$
# Warm up
-unset t
-t=111111111111111111111111111111111111111111111111111111111111111111111111
-export t
-unset t
-t=111111111111111111111111111111111111111111111111111111111111111111111111
-export t
-unset t
-t=111111111111111111111111111111111111111111111111111111111111111111111111
-export t
-unset t
-t=111111111111111111111111111111111111111111111111111111111111111111111111
-export t
-unset t
-t=111111111111111111111111111111111111111111111111111111111111111111111111
-export t
-i=1
-if test $i = 1111111111111111111111111111111111111111111111; then i=2; fi
beg=`ps -o pid,vsz | grep "^ *$pid "`
+i=1
+while test $i != X; do
+ unset t
+ t=111111111111111111111111111111111111111111111111111111111111111111111111
+ export t
+ unset t
+ t=111111111111111111111111111111111111111111111111111111111111111111111111
+ export t
+ unset t
+ t=111111111111111111111111111111111111111111111111111111111111111111111111
+ export t
+ unset t
+ t=111111111111111111111111111111111111111111111111111111111111111111111111
+ export t
+ unset t
+ t=111111111111111111111111111111111111111111111111111111111111111111111111
+ export t
+ i=1$i
+ if test $i = 1111111111111111111111111111111111111111111111; then i=2; fi
+ if test $i = 1111111111111111111111111111111111111111111112; then i=3; fi
+ if test $i = 1111111111111111111111111111111111111111111113; then i=4; fi
+ if test $i = 1111111111111111111111111111111111111111111114; then i=5; fi
+ if test $i = 1111111111111111111111111111111111111111111115; then i=6; fi
+ if test $i = 1111111111111111111111111111111111111111111116; then i=7; fi
+ if test $i = 1111111111111111111111111111111111111111111117; then i=8; fi
+ if test $i = 1111111111111111111111111111111111111111111118; then i=9; fi
+ if test $i = 1111111111111111111111111111111111111111111119; then i=a; fi
+ if test $i = 111111111111111111111111111111111111111111111a; then i=b; fi
+ if test $i = 111111111111111111111111111111111111111111111b; then i=c; fi
+ if test $i = 111111111111111111111111111111111111111111111c; then i=d; fi
+ if test $i = 111111111111111111111111111111111111111111111d; then i=e; fi
+ if test $i = 111111111111111111111111111111111111111111111e; then i=f; fi
+ if test $i = 111111111111111111111111111111111111111111111f; then i=g; fi
+ if test $i = 111111111111111111111111111111111111111111111g; then i=h; fi
+ if test $i = 111111111111111111111111111111111111111111111h; then i=i; fi
+ if test $i = 111111111111111111111111111111111111111111111i; then i=j; fi
+ if test $i = 111111111111111111111111111111111111111111111j; then i=X; fi
+done
+end=`ps -o pid,vsz | grep "^ *$pid "`
echo "Measuring memory leak..."
beg=`ps -o pid,vsz | grep "^ *$pid "`
shell/hush_test/run-all+1 -0
@@ -31,6 +31,7 @@ do_test()
test -x "$x" || continue
name="${x%%.tests}"
test -f "$name.right" || continue
+# echo Running test: "$name.right"
{
"$THIS_SH" "./$x" >"$name.xx" 2>&1
diff -u "$name.xx" "$name.right" >"../$1-$x.fail" && rm -f "$name.xx" "../$1-$x.fail"