37 lines
1.1 KiB
Diff
37 lines
1.1 KiB
Diff
|
makedumpfile: disable mmap read
|
||
|
|
|
||
|
|
There's a kernel bug for mapping mem ranges which end with
|
||
|
|
an address not aligned to page boundry. It's still not resolved
|
||
|
|
in upstream, so let's disable mmap read for now as a workaround.
|
||
|
|
|
||
|
|
Once upstream got a right fix we can revert this patch.
|
||
|
|
|
||
|
|
Signed-off-by: Dave Young <dyoung@redhat.com>
|
||
|
|
---
|
||
|
|
makedumpfile.c | 7 +++++++
|
||
|
|
1 file changed, 7 insertions(+)
|
||
|
|
|
||
|
|
--- kexec-tools/makedumpfile-1.5.4/makedumpfile.c.orig
|
||
|
|
+++ kexec-tools/makedumpfile-1.5.4/makedumpfile.c
|
||
|
|
@@ -3144,6 +3144,12 @@ out:
|
||
|
|
if (info->dump_level & DL_EXCLUDE_FREE)
|
||
|
|
setup_page_is_buddy();
|
||
|
|
|
||
|
|
+ /* There's a kernel bug for mapping mem ranges which end with
|
||
|
|
+ * an address not aligned to page boundry. It's still not resolved
|
||
|
|
+ * in upstream, so let's disable mmap read for now.
|
||
|
|
+ */
|
||
|
|
+ info->flag_usemmap = FALSE;
|
||
|
|
+#if 0
|
||
|
|
if (!initialize_mmap()) {
|
||
|
|
/* this kernel does not support mmap of vmcore */
|
||
|
|
DEBUG_MSG("Kernel can't mmap vmcore, using reads.\n");
|
||
|
|
@@ -3152,6 +3158,7 @@ out:
|
||
|
|
DEBUG_MSG("read %s with mmap()\n", info->name_memory);
|
||
|
|
info->flag_usemmap = TRUE;
|
||
|
|
}
|
||
|
|
+#endif
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|