diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2017-08-29 18:20:53 -0300 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2017-08-30 09:33:49 +0100 |
| commit | e916a6e88a4ff6c39cd6f62fb162a561c6b89de8 (patch) | |
| tree | 3ddd5ad2e3ddf81f538e4b30965010df868e56ba /util/oslib-posix.c | |
| parent | d942feec979b1ad669ba43b8c9540a7e3cf75a3f (diff) | |
| download | focaccia-qemu-e916a6e88a4ff6c39cd6f62fb162a561c6b89de8.tar.gz focaccia-qemu-e916a6e88a4ff6c39cd6f62fb162a561c6b89de8.zip | |
oslib-posix: Print errors before aborting on qemu_alloc_stack()
If QEMU is running on a system that's out of memory and mmap() fails, QEMU aborts with no error message at all, making it hard to debug the reason for the failure. Add perror() calls that will print error information before aborting. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-id: 20170829212053.6003-1-ehabkost@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'util/oslib-posix.c')
| -rw-r--r-- | util/oslib-posix.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/util/oslib-posix.c b/util/oslib-posix.c index cacf0ef5e3..80086c549f 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -530,6 +530,7 @@ void *qemu_alloc_stack(size_t *sz) ptr = mmap(NULL, *sz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (ptr == MAP_FAILED) { + perror("failed to allocate memory for stack"); abort(); } @@ -544,6 +545,7 @@ void *qemu_alloc_stack(size_t *sz) guardpage = ptr; #endif if (mprotect(guardpage, pagesz, PROT_NONE) != 0) { + perror("failed to set up stack guard page"); abort(); } |