github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-01 11:03:43 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

KVM: selftests: Guard execinfo.h inclusion for non-glibc builds

Browse Source 
The backtrace() function and execinfo.h are GNU extensions available
in glibc but not in non-glibc C libraries such as musl. Building KVM
selftests with musl-gcc fails with:

  lib/assert.c:9:10: fatal error: execinfo.h: No such file or directory

Fix this by guarding the inclusion of execinfo.h and the stack dumping
logic under #ifdef __GLIBC__. For non-glibc builds, provide a local
stub for test_dump_stack().

Suggested-by: Aqib Faruqui <aqibaf@amazon.com>
Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Hisam Mehboob <hisamshar@gmail.com>
Link: https://patch.msgid.link/20260409153846.1502656-2-hisamshar@gmail.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Hisam Mehboob 2026-04-09 20:38:47 +05:00 committed by Sean Christopherson
parent 8fe2e698fc
commit 34065a5f3c
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
tools/testing/selftests/kvm/lib/assert.c
View File

@ -6,11 +6,14 @@
*/
#include "test_util.h"
#include <execinfo.h>
#include <sys/syscall.h>
#include "kselftest.h"
#ifdef __GLIBC__
#include <execinfo.h>
/* Dumps the current stack trace to stderr. */
static void __attribute__((noinline)) test_dump_stack(void);
static void test_dump_stack(void)
@ -57,6 +60,9 @@ static void test_dump_stack(void)
system(cmd);
#pragma GCC diagnostic pop
}
#else
static void test_dump_stack(void) {}
#endif
static pid_t _gettid(void)
{