This is a note to let you know that I've just added the patch titled

objtool: Warn on stripped section symbol

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: objtool_Warn_on_stripped_section_symbol.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

Subject: objtool: Warn on stripped section symbol From: Josh Poimboeuf jpoimboe@redhat.com Date: Mon Jan 29 22:00:41 2018 -0600

From: Josh Poimboeuf jpoimboe@redhat.com

commit 830c1e3d16b2c1733cd1ec9c8f4d47a398ae31bc

With the following fix:

2a0098d70640 ("objtool: Fix seg fault with gold linker")

... a seg fault was avoided, but the original seg fault condition in objtool wasn't fixed. Replace the seg fault with an error message.

Suggested-by: Ingo Molnar mingo@kernel.org Signed-off-by: Josh Poimboeuf jpoimboe@redhat.com Cc: Andy Lutomirski luto@kernel.org Cc: Borislav Petkov bp@alien8.de Cc: Dave Hansen dave.hansen@linux.intel.com Cc: David Woodhouse dwmw2@infradead.org Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Cc: Guenter Roeck linux@roeck-us.net Cc: H. Peter Anvin hpa@zytor.com Cc: Juergen Gross jgross@suse.com Cc: Linus Torvalds torvalds@linux-foundation.org Cc: Peter Zijlstra peterz@infradead.org Cc: Thomas Gleixner tglx@linutronix.de Link: http://lkml.kernel.org/r/dc4585a70d6b975c99fc51d1957ccdde7bd52f3a.1517284349... Signed-off-by: Ingo Molnar mingo@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- tools/objtool/orc_gen.c | 5 +++++ 1 file changed, 5 insertions(+)

--- a/tools/objtool/orc_gen.c +++ b/tools/objtool/orc_gen.c @@ -98,6 +98,11 @@ static int create_orc_entry(struct secti struct orc_entry *orc; struct rela *rela;

+ if (!insn_sec->sym) { + WARN("missing symbol for section %s", insn_sec->name); + return -1; + } + /* populate ORC data */ orc = (struct orc_entry *)u_sec->data->d_buf + idx; memcpy(orc, o, sizeof(*orc));

Patches currently in stable-queue which might be from mingo@kernel.org are

queue-4.14/objtool_Add_support_for_alternatives_at_the_end_of_a_section.patch queue-4.14/x86entry64_Remove_the_SYSCALL64_fast_path.patch queue-4.14/x86asm_Move_status_from_thread_struct_to_thread_info.patch queue-4.14/x86entry64_Push_extra_regs_right_away.patch queue-4.14/objtool_Warn_on_stripped_section_symbol.patch queue-4.14/objtool_Improve_retpoline_alternative_handling.patch