The linux-next commit "x86: mm: avoid allocating struct mm_struct on the stack" [1] introduced a compilation error with "arm64: mm: convert mm/dump.c to use walk_page_range()" [2]. Fixed it by using the new API. arch/arm64/mm/dump.c:326:38: error: too few arguments to function call, expected 3, have 2 ptdump_walk_pgd(&st.ptdump, info->mm); ~~~~~~~~~~~~~~~ ^ ./include/linux/ptdump.h:20:1: note: 'ptdump_walk_pgd' declared here void ptdump_walk_pgd(struct ptdump_state *st, struct mm_struct *mm, pgd_t *pgd); ^ arch/arm64/mm/dump.c:364:38: error: too few arguments to function call, expected 3, have 2 ptdump_walk_pgd(&st.ptdump, &init_mm); ~~~~~~~~~~~~~~~ ^ ./include/linux/ptdump.h:20:1: note: 'ptdump_walk_pgd' declared here void ptdump_walk_pgd(struct ptdump_state *st, struct mm_struct *mm, pgd_t *pgd); ^ 2 errors generated. [1] http://lkml.kernel.org/r/20200108145710.34314-1-steven.price@xxxxxxx [2] http://lkml.kernel.org/r/20191218162402.45610-22-steven.price@xxxxxxx Signed-off-by: Qian Cai <cai@xxxxxx> --- arch/arm64/mm/dump.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c index ef4b3ca1e058..860c00ec8bd3 100644 --- a/arch/arm64/mm/dump.c +++ b/arch/arm64/mm/dump.c @@ -323,7 +323,7 @@ void ptdump_walk(struct seq_file *s, struct ptdump_info *info) } }; - ptdump_walk_pgd(&st.ptdump, info->mm); + ptdump_walk_pgd(&st.ptdump, info->mm, NULL); } static void ptdump_initialize(void) @@ -361,7 +361,7 @@ void ptdump_check_wx(void) } }; - ptdump_walk_pgd(&st.ptdump, &init_mm); + ptdump_walk_pgd(&st.ptdump, &init_mm, NULL); if (st.wx_pages || st.uxn_pages) pr_warn("Checked W+X mappings: FAILED, %lu W+X pages found, %lu non-UXN pages found\n", -- 2.21.0 (Apple Git-122.2)