The Linux next building selftests with gcc-13 found these build warnings and errors.

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

Build log: --------- PATH: selftests/mm/seal_elf

seal_elf.c: In function 'test_seal_elf': seal_elf.c:140:45: warning: format '%s' expects argument of type 'char *', but argument 5 has type 'char (*)[5]' [-Wformat=] 140 | if (sscanf(line, "%lx-%lx %4s %*x %*x:%*x %*u %255[^\n]", | ~~^ | | | char * 141 | &addr_start, &addr_end, &prot, &filename) == 4) { | ~~~~~ | | | char (*)[5] seal_elf.c:140:69: warning: format '%[^ ' expects argument of type 'char *', but argument 6 has type 'char (*)[256]' [-Wformat=] 140 | if (sscanf(line, "%lx-%lx %4s %*x %*x:%*x %*u %255[^\n]", | ~~~~~~^~ | | | char * 141 | &addr_start, &addr_end, &prot, &filename) == 4) { | ~~~~~~~~~ | | | char (*)[256] seal_elf.c:110:13: warning: unused variable 'size' [-Wunused-variable] 110 | int size = 0; | ^~~~ /usr/lib/gcc-cross/aarch64-linux-gnu/13/../../../../aarch64-linux-gnu/bin/ld: /tmp/cczODkiZ.o: in function `test_seal_elf': seal_elf.c:(.text+0x738): undefined reference to `sys_mprotect' /usr/lib/gcc-cross/aarch64-linux-gnu/13/../../../../aarch64-linux-gnu/bin/ld: seal_elf.c:(.text+0x794): undefined reference to `sys_mprotect' /usr/lib/gcc-cross/aarch64-linux-gnu/13/../../../../aarch64-linux-gnu/bin/ld: seal_elf.c:(.text+0x944): undefined reference to `sys_mprotect' collect2: error: ld returned 1 exit status

Steps to reproduce: --- tuxmake --runtime podman --target-arch arm64 --toolchain gcc-13 \ --kconfig https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3wG8BqWxf0afUI5f4... \ debugkernel dtbs dtbs-legacy headers kernel kselftest modules

Links: - https://storage.tuxsuite.com/public/linaro/lkft/builds/2fDW3wG8BqWxf0afUI5f4...

-- Linaro LKFT https://lkft.linaro.org