binfmt_flat: use flush_icache_user_range

Christoph Hellwig · torvalds · commit 79ef1e1fffeb · 2020-06-08T11:05:58.000-07:00
load_flat_file works on user addresses. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Greg Ungerer <gerg@linux-m68k.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Link: http://lkml.kernel.org/r/20200515143646.3857579-28-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
@@ -854,7 +854,7 @@ static int load_flat_file(struct linux_binprm *bprm,
 #endif /* CONFIG_BINFMT_FLAT_OLD */
 	}
 
-	flush_icache_range(start_code, end_code);
+	flush_icache_user_range(start_code, end_code);
 
 	/* zero the BSS,  BRK and stack areas */
 	if (clear_user((void __user *)(datapos + data_len), bss_len +

Original file line number	Diff line number	Diff line change
`@@ -854,7 +854,7 @@ static int load_flat_file(struct linux_binprm *bprm,`
`854`	`854`	`#endif /* CONFIG_BINFMT_FLAT_OLD */`
`855`	`855`	`}`
`856`	`856`
`857`		`- flush_icache_range(start_code, end_code);`
	`857`	`+ flush_icache_user_range(start_code, end_code);`
`858`	`858`
`859`	`859`	`/* zero the BSS, BRK and stack areas */`
`860`	`860`	`if (clear_user((void __user *)(datapos + data_len), bss_len +`