https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399
--- Comment #238 from Nils Beyer <n...@renzel.net> ---
(In reply to Don Lewis from comment #237)
okay, just for fun I increased the dead zone of the user page:
--------------------------------------------------------------------------
Index: sys/amd64/amd64/elf_machdep.c
===================================================================
--- sys/amd64/amd64/elf_machdep.c (revision 323186)
+++ sys/amd64/amd64/elf_machdep.c (working copy)
@@ -88,10 +88,10 @@
amd64_lower_shared_page(struct sysentvec *sv)
{
if (hw_lower_amd64_sharedpage != 0) {
- sv->sv_maxuser -= PAGE_SIZE;
- sv->sv_shared_page_base -= PAGE_SIZE;
- sv->sv_usrstack -= PAGE_SIZE;
- sv->sv_psstrings -= PAGE_SIZE;
+ sv->sv_maxuser -= (128 * PAGE_SIZE);
+ sv->sv_shared_page_base -= (128 * PAGE_SIZE);
+ sv->sv_usrstack -= (128 * PAGE_SIZE);
+ sv->sv_psstrings -= (128 * PAGE_SIZE);
}
}
[...]
root@asbach:/home/nbe/#./sigtramp ^M
8
-1 12 0x7ffffff7f190 8
--------------------------------------------------------------------------
let's see if that changes anything...
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