Messages in this thread Patch in this message | | | Date | Wed, 3 Apr 2019 16:00:42 -0500 | From | Josh Poimboeuf <> | Subject | Re: [tip:core/objtool 2/25] arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to next function show_regs() |
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On Thu, Apr 04, 2019 at 01:43:05AM +0800, kbuild test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git core/objtool > head: 64604d54d3115fee89598bfb6d8d2252f8a2d114 > commit: 37686b1353cfc30e127cef811959cdbcd0495d98 [2/25] tracing: Improve "if" macro code generation > config: x86_64-randconfig-e2-03311307 (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > git checkout 37686b1353cfc30e127cef811959cdbcd0495d98 > # save the attached .config to linux build tree > make ARCH=x86_64 > > All warnings (new ones prefixed by >>): > > >> arch/x86/kernel/dumpstack.o: warning: objtool: oops_end() falls through to next function show_regs()
This should be fixed by adding rewind_stack_do_exit() to the objtool noreturn list. I'll post a proper patch soon.
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 38b0517dc49e..ac743a1d53ab 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -143,6 +143,7 @@ static int __dead_end_function(struct objtool_file *file, struct symbol *func, "fortify_panic", "usercopy_abort", "machine_real_restart", + "rewind_stack_do_exit", }; if (func->bind == STB_WEAK)
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