Merge bk://linux.bkbits.net/linux-2.5

into hostme.bitkeeper.com:/repos/c/cifs/linux-2.5cifs

arch/ppc64/kernel/signal.c

@@ -115,7 +115,7 @@ long sys_sigaltstack(const stack_t *uss, stack_t *uoss, unsigned long r5,
  * Set up the sigcontext for the signal frame.
  */
 
-static int setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
+static long setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
 		 int signr, sigset_t *set, unsigned long handler)
 {
 	/* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
@@ -129,7 +129,7 @@ static int setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
 #ifdef CONFIG_ALTIVEC
 	elf_vrreg_t *v_regs = (elf_vrreg_t *)(((unsigned long)sc->vmx_reserve) & ~0xful);
 #endif
-	int err = 0;
+	long err = 0;
 
 	if (regs->msr & MSR_FP)
 		giveup_fpu(current);
@@ -173,18 +173,32 @@ static int setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs,
  * Restore the sigcontext from the signal frame.
  */
 
-static int restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig, struct sigcontext *sc)
+static long restore_sigcontext(struct pt_regs *regs, sigset_t *set, int sig,
+			      struct sigcontext *sc)
 {
 #ifdef CONFIG_ALTIVEC
 	elf_vrreg_t *v_regs;
 #endif
-	unsigned int err = 0;
+	unsigned long err = 0;
 	unsigned long save_r13;
+	elf_greg_t *gregs = (elf_greg_t *)regs;
+	int i;
 
 	/* If this is not a signal return, we preserve the TLS in r13 */
 	if (!sig)
 		save_r13 = regs->gpr[13];
-	err |= __copy_from_user(regs, &sc->gp_regs, GP_REGS_SIZE);
+
+	/* copy everything before MSR */
+	err |= __copy_from_user(regs, &sc->gp_regs,
+				PT_MSR*sizeof(unsigned long));
+
+	/* skip MSR and SOFTE */
+	for (i = PT_MSR+1; i <= PT_RESULT; i++) {
+		if (i == PT_SOFTE)
+			continue;
+		err |= __get_user(gregs[i], &sc->gp_regs[i]);
+	}
+
 	if (!sig)
 		regs->gpr[13] = save_r13;
 	err |= __copy_from_user(&current->thread.fpr, &sc->fp_regs, FP_REGS_SIZE);
@@ -235,9 +249,10 @@ static inline void * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
 /*
  * Setup the trampoline code on the stack
  */
-static int setup_trampoline(unsigned int syscall, unsigned int *tramp)
+static long setup_trampoline(unsigned int syscall, unsigned int *tramp)
 {
-	int i, err = 0;
+	int i;
+	long err = 0;
 
 	/* addi r1, r1, __SIGNAL_FRAMESIZE  # Pop the dummy stackframe */
 	err |= __put_user(0x38210000UL | (__SIGNAL_FRAMESIZE & 0xffff), &tramp[0]);
@@ -372,7 +387,7 @@ static void setup_rt_frame(int signr, struct k_sigaction *ka, siginfo_t *info,
 	func_descr_t *funct_desc_ptr;
 	struct rt_sigframe *frame;
 	unsigned long newsp = 0;
-	int err = 0;
+	long err = 0;
 
 	frame = get_sigframe(ka, regs, sizeof(*frame));
 

arch/ppc64/kernel/signal32.c

@@ -185,25 +185,28 @@ static int save_user_regs(struct pt_regs *regs, struct mcontext32 *frame, int si
  * Restore the current user register values from the user stack,
  * (except for MSR).
  */
-static int restore_user_regs(struct pt_regs *regs, struct mcontext32 __user *sr, int sig)
+static long restore_user_regs(struct pt_regs *regs,
+			      struct mcontext32 __user *sr, int sig)
 {
 	elf_greg_t64 *gregs = (elf_greg_t64 *)regs;
-	int i, err = 0;
+	int i;
+	long err = 0;
 	unsigned int save_r2;
 #ifdef CONFIG_ALTIVEC
 	unsigned long msr;
 #endif
 
 	/*
-	 * restore general registers but not including MSR. Also take
-	 * care of keeping r2 (TLS) intact if not a signal
+	 * restore general registers but not including MSR or SOFTE. Also
+	 * take care of keeping r2 (TLS) intact if not a signal
 	 */
 	if (!sig)
 		save_r2 = (unsigned int)regs->gpr[2];
-	for (i = 0; i < PT_MSR; i ++)
-		err |= __get_user(gregs[i], &sr->mc_gregs[i]);
-	for (i ++; i <= PT_RESULT; i ++)
+	for (i = 0; i <= PT_RESULT; i++) {
+		if ((i == PT_MSR) || (i == PT_SOFTE))
+			continue;
 		err |= __get_user(gregs[i], &sr->mc_gregs[i]);
+	}
 	if (!sig)
 		regs->gpr[2] = (unsigned long) save_r2;
 	if (err)
@@ -427,9 +430,9 @@ long sys32_rt_sigpending(compat_sigset_t *set, compat_size_t sigsetsize)
 }
 
 
-static int copy_siginfo_to_user32(compat_siginfo_t *d, siginfo_t *s)
+static long copy_siginfo_to_user32(compat_siginfo_t *d, siginfo_t *s)
 {
-	int err;
+	long err;
 
 	if (!access_ok (VERIFY_WRITE, d, sizeof(*d)))
 		return -EFAULT;

fs/isofs/rock.c

@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/smp_lock.h>
 #include <linux/buffer_head.h>
+#include <asm/page.h>
 
 #include "rock.h"
 
@@ -358,7 +359,7 @@ int parse_rock_ridge_inode_internal(struct iso_directory_record * de,
   return 0;
 }
 
-static char *get_symlink_chunk(char *rpnt, struct rock_ridge *rr)
+static char *get_symlink_chunk(char *rpnt, struct rock_ridge *rr, char *plimit)
 {
 	int slen;
 	int rootflag;
@@ -370,16 +371,25 @@ static char *get_symlink_chunk(char *rpnt, struct rock_ridge *rr)
 		rootflag = 0;
 		switch (slp->flags & ~1) {
 		case 0:
+			if (slp->len > plimit - rpnt)
+				return NULL;
 			memcpy(rpnt, slp->text, slp->len);
 			rpnt+=slp->len;
 			break;
+		case 2:
+			if (rpnt >= plimit)
+				return NULL;
+			*rpnt++='.';
+			break;
 		case 4:
+			if (2 > plimit - rpnt)
+				return NULL;
 			*rpnt++='.';
-			/* fallthru */
-		case 2:
 			*rpnt++='.';
 			break;
 		case 8:
+			if (rpnt >= plimit)
+				return NULL;
 			rootflag = 1;
 			*rpnt++='/';
 			break;
@@ -396,17 +406,23 @@ static char *get_symlink_chunk(char *rpnt, struct rock_ridge *rr)
 			 * If there is another SL record, and this component
 			 * record isn't continued, then add a slash.
 			 */
-			if ((!rootflag) && (rr->u.SL.flags & 1) && !(oldslp->flags & 1))
+			if ((!rootflag) && (rr->u.SL.flags & 1) &&
+			    !(oldslp->flags & 1)) {
+				if (rpnt >= plimit)
+					return NULL;
 				*rpnt++='/';
+			}
 			break;
 		}
 
 		/*
 		 * If this component record isn't continued, then append a '/'.
 		 */
-		if (!rootflag && !(oldslp->flags & 1))
+		if (!rootflag && !(oldslp->flags & 1)) {
+			if (rpnt >= plimit)
+				return NULL;
 			*rpnt++='/';
-
+		}
 	}
 	return rpnt;
 }
@@ -487,7 +503,10 @@ static int rock_ridge_symlink_readpage(struct file *file, struct page *page)
 			CHECK_SP(goto out);
 			break;
 		case SIG('S', 'L'):
-			rpnt = get_symlink_chunk(rpnt, rr);
+			rpnt = get_symlink_chunk(rpnt, rr,
+						 link + (PAGE_SIZE - 1));
+			if (rpnt == NULL)
+				goto out;
 			break;
 		case SIG('C', 'E'):
 			/* This tells is if there is a continuation record */

fs/jfs/jfs_txnmgr.c

@@ -2977,11 +2977,12 @@ int jfs_sync(void *arg)
 					    anon_inode_list);
 			ip = &jfs_ip->vfs_inode;
 
-			/*
-			 * down_trylock returns 0 on success.  This is
-			 * inconsistent with spin_trylock.
-			 */
-			if (! down_trylock(&jfs_ip->commit_sem)) {
+			if (! igrab(ip)) {
+				/*
+				 * Inode is being freed
+				 */
+				list_del_init(&jfs_ip->anon_inode_list);
+			} else if (! down_trylock(&jfs_ip->commit_sem)) {
 				/*
 				 * inode will be removed from anonymous list
 				 * when it is committed
@@ -2991,6 +2992,8 @@ int jfs_sync(void *arg)
 				rc = txCommit(tid, 1, &ip, 0);
 				txEnd(tid);
 				up(&jfs_ip->commit_sem);
+
+				iput(ip);
 				/*
 				 * Just to be safe.  I don't know how
 				 * long we can run without blocking
@@ -3010,6 +3013,10 @@ int jfs_sync(void *arg)
 				/* Put on anon_list2 */
 				list_add(&jfs_ip->anon_inode_list,
 					 &TxAnchor.anon_list2);
+
+				TXN_UNLOCK();
+				iput(ip);
+				TXN_LOCK();
 			}
 		}
 		/* Add anon_list2 back to anon_list */

kernel/rcupdate.c

@@ -182,7 +182,7 @@ static void rcu_offline_cpu(int cpu)
 	 * it here
 	 */
 	spin_lock_irq(&rcu_ctrlblk.mutex);
-	if (!rcu_ctrlblk.rcu_cpu_mask)
+	if (cpus_empty(rcu_ctrlblk.rcu_cpu_mask))
 		goto unlock;
 
 	cpu_clear(cpu, rcu_ctrlblk.rcu_cpu_mask);