Program received signal SIGSEGV, Segmentation fault.
__stack_split_initialize ()
at /export/gnu/import/git/sources/gcc/libgcc/config/i386/morestack.S:751
751 leaq -16000(%rsp),%rax # We should have at least 16K.
Missing separate debuginfos, use: dnf debuginfo-install
libgcc-8.0.1-0.21.0.fc28.x86_64
(gdb) disass
Dump of assembler code for function __stack_split_initialize:
=> 0x0000000000402858 <+0>: lea -0x3e80(%rsp),%rax
0x0000000000402860 <+8>: mov %rax,%fs:0x70
0x0000000000402869 <+17>: sub $0x8,%rsp
0x000000000040286d <+21>: mov %rsp,%rdi
0x0000000000402870 <+24>: mov $0x3e80,%esi
0x0000000000402875 <+29>: callq 0x401810
<__generic_morestack_set_initial_sp>
0x000000000040287a <+34>: add $0x8,%rsp
0x000000000040287e <+38>: retq
End of assembler dump.
(gdb)
This patch adds the missing ENDBR to __stack_split_initialize.
OK for trunk?
H.J.
---
PR libgcc/85379
* config/i386/morestack.S (__stack_split_initialize): Add
_CET_ENDBR.
---
libgcc/config/i386/morestack.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/libgcc/config/i386/morestack.S b/libgcc/config/i386/morestack.S
index eca441a2867..99e65eaaff4 100644
--- a/libgcc/config/i386/morestack.S
+++ b/libgcc/config/i386/morestack.S
@@ -730,6 +730,7 @@ __morestack_large_model:
#endif
__stack_split_initialize:
+ _CET_ENDBR
#ifndef __x86_64__
--
2.14.3
