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| author | H.J. Lu <hongjiu.lu@intel.com> | 2018-04-19 15:22:27 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2018-04-19 08:22:27 -0700 |
| commit | 5f9ca0b8bfdce679dea03b6ac402c28d5ecfd5c2 (patch) | |
| tree | d0b0528c36d647ea4f10ae2fca4310f41d0464f1 | |
| parent | 73d1e5721d54089c77c8975830638aeea449d49e (diff) | |
| download | gcc-5f9ca0b8bfdce679dea03b6ac402c28d5ecfd5c2.zip gcc-5f9ca0b8bfdce679dea03b6ac402c28d5ecfd5c2.tar.gz gcc-5f9ca0b8bfdce679dea03b6ac402c28d5ecfd5c2.tar.bz2 | |
libgcc/CET: Add _CET_ENDBR to __stack_split_initialize
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.
PR libgcc/85379
* config/i386/morestack.S (__stack_split_initialize): Add
_CET_ENDBR.
From-SVN: r259497
| -rw-r--r-- | libgcc/ChangeLog | 6 | ||||
| -rw-r--r-- | libgcc/config/i386/morestack.S | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/libgcc/ChangeLog b/libgcc/ChangeLog index 7de2ff6..674d204 100644 --- a/libgcc/ChangeLog +++ b/libgcc/ChangeLog @@ -1,3 +1,9 @@ +2018-04-19 H.J. Lu <hongjiu.lu@intel.com> + + PR libgcc/85379 + * config/i386/morestack.S (__stack_split_initialize): Add + _CET_ENDBR. + 2018-04-19 Jakub Jelinek <jakub@redhat.com> * configure: Regenerated. diff --git a/libgcc/config/i386/morestack.S b/libgcc/config/i386/morestack.S index eca441a..99e65ea 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__ |