Title: [8894] trunk/fs/binfmt_elf_fdpic.c: binfmt_elf_fdpic: Fix clear_user() error handling
Revision
8894
Author
vapier
Date
2010-06-07 04:45:03 -0400 (Mon, 07 Jun 2010)

Log Message

binfmt_elf_fdpic: Fix clear_user() error handling

Modified Paths


Diff

Modified: trunk/fs/binfmt_elf_fdpic.c (8893 => 8894)


--- trunk/fs/binfmt_elf_fdpic.c	2010-06-07 07:27:01 UTC (rev 8893)
+++ trunk/fs/binfmt_elf_fdpic.c	2010-06-07 08:45:03 UTC (rev 8894)
@@ -993,10 +993,9 @@
 
 		/* clear any space allocated but not loaded */
 		if (phdr->p_filesz < phdr->p_memsz) {
-			ret = clear_user((void *) (seg->addr + phdr->p_filesz),
-					 phdr->p_memsz - phdr->p_filesz);
-			if (ret)
-				return ret;
+			if (clear_user((void *) (seg->addr + phdr->p_filesz),
+				       phdr->p_memsz - phdr->p_filesz))
+				return -EFAULT;
 		}
 
 		if (mm) {
@@ -1030,7 +1029,7 @@
 	struct elf32_fdpic_loadseg *seg;
 	struct elf32_phdr *phdr;
 	unsigned long load_addr, delta_vaddr;
-	int loop, dvset, ret;
+	int loop, dvset;
 
 	load_addr = params->load_addr;
 	delta_vaddr = 0;
@@ -1042,7 +1041,7 @@
 	phdr = params->phdrs;
 	for (loop = 0; loop < params->hdr.e_phnum; loop++, phdr++) {
 		unsigned long maddr, disp, excess, excess1;
-		int prot = 0, flags;
+		int prot = 0, flags, ret;
 
 		if (phdr->p_type != PT_LOAD)
 			continue;
@@ -1137,9 +1136,8 @@
 		 * PT_LOAD */
 		if (prot & PROT_WRITE && disp > 0) {
 			kdebug("clear[%d] ad=%lx sz=%lx", loop, maddr, disp);
-			ret = clear_user((void __user *) maddr, disp);
-			if (ret)
-				return ret;
+			if (clear_user((void __user *) maddr, disp))
+				return -EFAULT;
 			maddr += disp;
 		}
 
@@ -1174,19 +1172,17 @@
 		if (prot & PROT_WRITE && excess1 > 0) {
 			kdebug("clear[%d] ad=%lx sz=%lx",
 			       loop, maddr + phdr->p_filesz, excess1);
-			ret = clear_user((void __user *) maddr + phdr->p_filesz,
-					 excess1);
-			if (ret)
-				return ret;
+			if (clear_user((void __user *) maddr + phdr->p_filesz,
+				       excess1))
+				return -EFAULT;
 		}
 
 #else
 		if (excess > 0) {
 			kdebug("clear[%d] ad=%lx sz=%lx",
 			       loop, maddr + phdr->p_filesz, excess);
-			ret = clear_user((void *) maddr + phdr->p_filesz, excess);
-			if (ret)
-				return ret;
+			if (clear_user((void *) maddr + phdr->p_filesz, excess))
+				return -EFAULT;
 		}
 #endif
 
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