<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Sanitizer CHECK failed: ((allocated_for_dlsym)) < ((kDlsymAllocPoolSize)) (0x41b, 0x400)) with preload"
href="https://bugs.llvm.org/show_bug.cgi?id=52278">52278</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Sanitizer CHECK failed: ((allocated_for_dlsym)) < ((kDlsymAllocPoolSize)) (0x41b, 0x400)) with preload
</td>
</tr>
<tr>
<th>Product</th>
<td>compiler-rt
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>asan
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>hjl.tools@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>With glibc 2.34 on Linux/x86-64, LLVM 13.0.0 rc1 gave me:
[hjl@gnu-skx-1 gcc]$ cat x.c
#include <assert.h>
struct A {
char a[3];
int b[3];
};
volatile int ten = 10;
__attribute__((noinline)) void foo(int index, int len) {
volatile struct A str[len] __attribute__((aligned(32)));
assert(!((long) str & 31L));
str[index].a[0] = '1'; // BOOM
}
int main(int argc, char **argv) {
foo(ten, ten);
return 0;
}
[hjl@gnu-skx-1 gcc]$ clang -O0 -fsanitize=address x.c -shared-libasan -m32
[hjl@gnu-skx-1 gcc]$
LD_PRELOAD=/export/users/hjl/build/gnu/tools-build/gcc-debug/build-x86_64-linux/x86_64-pc-linux-gnu/32/libsanitizer/libclang_rt.asan-i386.so
./a.out
AddressSanitizer: CHECK failed: asan_malloc_linux.cpp:46
"((allocated_for_dlsym)) < ((kDlsymAllocPoolSize))" (0x402, 0x400)
(tid=3485465)
<empty stack>
[hjl@gnu-skx-1 gcc]$
depending on the directory length where libclang_rt.asan-i386.so is placed.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>