From: Baoquan He <bhe@redhat.com> stable inclusion from stable-v5.10.216 commit d5cc3498f0791a4cb70d78fee8027c62573ef55e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9QRO0 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit ac88ff6b9d7dea9f0907c86bdae204dde7d5c0e6 ] When below config items are set, compiler complained: -------------------- CONFIG_CRASH_CORE=y CONFIG_KEXEC_CORE=y CONFIG_CRASH_DUMP=y ...... ----------------------- ------------------------------------------------------------------- arch/riscv/kernel/crash_core.c: In function 'arch_crash_save_vmcoreinfo': arch/riscv/kernel/crash_core.c:11:58: warning: format '%lx' expects argument of type 'long unsigned int', but argument 2 has type 'int' [-Wformat=] 11 | vmcoreinfo_append_str("NUMBER(VMALLOC_START)=0x%lx\n", VMALLOC_START); | ~~^ | | | long unsigned int | %x ---------------------------------------------------------------------- This is because on riscv macro VMALLOC_START has different type when CONFIG_MMU is set or unset. arch/riscv/include/asm/pgtable.h: -------------------------------------------------- Changing it to _AC(0, UL) in case CONFIG_MMU=n can fix the warning. Link: https://lkml.kernel.org/r/ZW7OsX4zQRA3mO4+@MiWiFi-R3L-srv Signed-off-by: Baoquan He <bhe@redhat.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Cc: Eric DeVolder <eric_devolder@yahoo.com> Cc: Ignat Korchagin <ignat@cloudflare.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Stable-dep-of: 6065e736f82c ("riscv: Fix TASK_SIZE on 64-bit NOMMU") Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Zhao Mengmeng <zhaomengmeng@kylinos.cn> --- arch/riscv/include/asm/pgtable.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 5ab13570daa5..d048fb5faa69 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -457,7 +457,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma, #define PAGE_KERNEL __pgprot(0) #define swapper_pg_dir NULL #define TASK_SIZE 0xffffffffUL -#define VMALLOC_START 0 +#define VMALLOC_START _AC(0, UL) #define VMALLOC_END TASK_SIZE static inline void __kernel_map_pages(struct page *page, int numpages, int enable) {} -- 2.33.0