On 15. 08. 19, 18:07, Borislav Petkov wrote: > --- a/arch/x86/kernel/head_64.S > +++ b/arch/x86/kernel/head_64.S > @@ -283,7 +283,7 @@ ENTRY(early_idt_handler_array) > UNWIND_HINT_IRET_REGS offset=8 > .endif > pushq $i # 72(%rsp) Vector number > - jmp early_idt_handler_common > + jmp .Learly_idt_handler_common > UNWIND_HINT_IRET_REGS > i = i + 1 > .fill early_idt_handler_array + i*EARLY_IDT_HANDLER_SIZE - ., 1, 0xcc > @@ -291,7 +291,7 @@ ENTRY(early_idt_handler_array) > UNWIND_HINT_IRET_REGS offset=16 > END(early_idt_handler_array) > > -SYM_CODE_START_LOCAL(early_idt_handler_common) > +SYM_CODE_START_LOCAL(.Learly_idt_handler_common) > /* > * The stack is the hardware frame, an error code or zero, and the > * vector number. > @@ -333,7 +333,7 @@ SYM_CODE_START_LOCAL(early_idt_handler_common) > 20: > decl early_recursion_flag(%rip) > jmp restore_regs_and_return_to_kernel > -SYM_CODE_END(early_idt_handler_common) > +SYM_CODE_END(.Learly_idt_handler_common) ... > All except this one can be local labels and be removed from vmlinux' > symtable: > > $ readelf -a vmlinux | grep -E "(bad_(gs|(get|put)_user)|bogus_64_magic|early_idt_handler_common|verify_cpu)" > 45: ffffffff810000e0 241 FUNC LOCAL DEFAULT 1 verify_cpu > $ Thanks for all the review hints. Let's start with this one: do you really want me to get rid of (local) symbols like this? It would make backtraces completely misleading as the unwinder would put a name of the previous function (or some garbage, depending on unwinder) into the backtrace... thanks, -- js suse labs
