linux-kernel - vmlinux.o: warning: objtool: ovl_copy_up_tmpfile() falls through to next function MR

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Message-ID: <202404080619.ZMsN3kSk-lkp@intel.com>
Date: Mon, 8 Apr 2024 06:13:29 +0800
From: kernel test robot <lkp@...el.com>
To: Amir Goldstein <amir73il@...il.com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: vmlinux.o: warning: objtool: ovl_copy_up_tmpfile() falls through to
 next function MR_BuildRaidContext.cold()

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   fec50db7033ea478773b159e0e2efb135270e3b7
commit: c63e56a4a6523fcb1358e1878607d77a40b534bb ovl: do not open/llseek lower file with upper sb_writers held
date:   5 months ago
config: x86_64-buildonly-randconfig-r006-20211105 (https://download.01.org/0day-ci/archive/20240408/202404080619.ZMsN3kSk-lkp@intel.com/config)
compiler: gcc-13 (Ubuntu 13.2.0-4ubuntu3) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240408/202404080619.ZMsN3kSk-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202404080619.ZMsN3kSk-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> vmlinux.o: warning: objtool: ni_read_frame() falls through to next function ovl_copy_up_tmpfile.cold()
>> vmlinux.o: warning: objtool: ovl_copy_up_tmpfile() falls through to next function MR_BuildRaidContext.cold()
   vmlinux.o: warning: objtool: kvm_spurious_fault+0x1d: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: fixup_bad_iret+0x99: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: noist_exc_debug+0x40: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: exc_nmi+0xd2: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: poke_int3_handler+0x56: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: native_sched_clock+0x84: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: mce_check_crashing_cpu+0xd: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: do_machine_check+0x68: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: exc_machine_check+0x79: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: local_clock_noinstr+0x7f: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: irqentry_nmi_enter+0x3a: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: irqentry_nmi_exit+0x3f: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: enter_from_user_mode+0x3a: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_enter_from_user_mode+0x3f: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare+0x3a: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: irqentry_enter_from_user_mode+0x3a: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ct_kernel_exit_state+0x27: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ct_kernel_enter_state+0x25: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ct_kernel_enter.constprop.0+0x21: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ct_kernel_exit.constprop.0+0x2a: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ct_idle_enter+0x30: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: ct_nmi_enter+0x24: call to ftrace_likely_update() leaves .noinstr.text section
   vmlinux.o: warning: objtool: mwait_idle+0x2a: call to ftrace_likely_update() leaves .noinstr.text section

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki