The quilt patch titled Subject: m68k: sun3: add check for __pgd_alloc() has been removed from the -mm tree. Its filename was m68k-sun3-add-check-for-__pgd_alloc.patch
This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------ From: Haoxiang Li haoxiang_li2024@163.com Subject: m68k: sun3: add check for __pgd_alloc() Date: Tue, 18 Feb 2025 00:00:17 +0800
Add check for the return value of __pgd_alloc() in pgd_alloc() to prevent null pointer dereference.
Link: https://lkml.kernel.org/r/20250217160017.2375536-1-haoxiang_li2024@163.com Fixes: a9b3c355c2e6 ("asm-generic: pgalloc: provide generic __pgd_{alloc,free}") Signed-off-by: Haoxiang Li haoxiang_li2024@163.com Reviewed-by: Geert Uytterhoeven geert@linux-m68k.org Acked-by: Geert Uytterhoeven geert@linux-m68k.org Cc: Dave Hansen dave.hansen@linux.intel.com Cc: Kevin Brodsky kevin.brodsky@arm.com Cc: Qi Zheng zhengqi.arch@bytedance.com Cc: Sam Creasey sammy@sammy.net Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
arch/m68k/include/asm/sun3_pgalloc.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/arch/m68k/include/asm/sun3_pgalloc.h~m68k-sun3-add-check-for-__pgd_alloc +++ a/arch/m68k/include/asm/sun3_pgalloc.h @@ -44,8 +44,10 @@ static inline pgd_t * pgd_alloc(struct m pgd_t *new_pgd;
new_pgd = __pgd_alloc(mm, 0); - memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); - memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT)); + if (likely(new_pgd != NULL)) { + memcpy(new_pgd, swapper_pg_dir, PAGE_SIZE); + memset(new_pgd, 0, (PAGE_OFFSET >> PGDIR_SHIFT)); + } return new_pgd; }
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Patches currently in -mm which might be from haoxiang_li2024@163.com are