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Subjectarch/x86/kernel/cpu/bugs.c:657:6: error: no previous prototype for 'unpriv_ebpf_notify'
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: e1f700ebd6bea293abe3c7e2807b252018efde01
commit: 44a3918c8245ab10c6c9719dd12e7a8d291980d8 x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting
date: 7 weeks ago
config: x86_64-sof-customedconfig-bpf-defconfig (https://download.01.org/0day-ci/archive/20220410/202204101514.YEhzsZ1Q-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.2.0-19) 11.2.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=44a3918c8245ab10c6c9719dd12e7a8d291980d8
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 44a3918c8245ab10c6c9719dd12e7a8d291980d8
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> arch/x86/kernel/cpu/bugs.c:657:6: error: no previous prototype for 'unpriv_ebpf_notify' [-Werror=missing-prototypes]
657 | void unpriv_ebpf_notify(int new_state)
| ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors


vim +/unpriv_ebpf_notify +657 arch/x86/kernel/cpu/bugs.c

655
656 #ifdef CONFIG_BPF_SYSCALL
> 657 void unpriv_ebpf_notify(int new_state)
658 {
659 if (spectre_v2_enabled == SPECTRE_V2_EIBRS && !new_state)
660 pr_err(SPECTRE_V2_EIBRS_EBPF_MSG);
661 }
662 #endif
663

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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