---

yaml
---
r: 74309
b: refs/heads/master
c: cae2f9c
h: refs/heads/master
i:
  74307: 617d7fa
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8118a859dc7abd873193986c77a8d9bdb877adc8
+refs/heads/master: cae2f9c46d69edb1aee565917735d79aba3a3267

trunk/fs/exec.c

@@ -1780,6 +1780,12 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
 	   but keep the previous behaviour for now. */
 	if (!ispipe && !S_ISREG(inode->i_mode))
 		goto close_fail;
+	/*
+	 * Dont allow local users get cute and trick others to coredump
+	 * into their pre-created files:
+	 */
+	if (inode->i_uid != current->fsuid)
+		goto close_fail;
 	if (!file->f_op)
 		goto close_fail;
 	if (!file->f_op->write)

trunk/include/linux/sched.h

@@ -282,6 +282,10 @@ static inline void touch_all_softlockup_watchdogs(void)
 
 /* Attach to any functions which should be ignored in wchan output. */
 #define __sched		__attribute__((__section__(".sched.text")))
+
+/* Linker adds these: start and end of __sched functions */
+extern char __sched_text_start[], __sched_text_end[];
+
 /* Is this address in the __sched functions? */
 extern int in_sched_functions(unsigned long addr);
 

trunk/kernel/sched.c

@@ -5466,7 +5466,7 @@ sd_alloc_ctl_domain_table(struct sched_domain *sd)
 	return table;
 }
 
-static ctl_table * sd_alloc_ctl_cpu_table(int cpu)
+static ctl_table *sd_alloc_ctl_cpu_table(int cpu)
 {
 	struct ctl_table *entry, *table;
 	struct sched_domain *sd;
@@ -6708,9 +6708,6 @@ void __init sched_init_smp(void)
 
 int in_sched_functions(unsigned long addr)
 {
-	/* Linker adds these: start and end of __sched functions */
-	extern char __sched_text_start[], __sched_text_end[];
-
 	return in_lock_functions(addr) ||
 		(addr >= (unsigned long)__sched_text_start
 		&& addr < (unsigned long)__sched_text_end);

trunk/kernel/sched_debug.c

@@ -327,10 +327,12 @@ void proc_sched_show_task(struct task_struct *p, struct seq_file *m)
 			avg_atom = -1LL;
 
 		avg_per_cpu = p->se.sum_exec_runtime;
-		if (p->se.nr_migrations)
-			avg_per_cpu = div64_64(avg_per_cpu, p->se.nr_migrations);
-		else
+		if (p->se.nr_migrations) {
+			avg_per_cpu = div64_64(avg_per_cpu,
+					       p->se.nr_migrations);
+		} else {
 			avg_per_cpu = -1LL;
+		}
 
 		__PN(avg_atom);
 		__PN(avg_per_cpu);

trunk/kernel/sched_stats.h

@@ -52,7 +52,8 @@ static int show_schedstat(struct seq_file *seq, void *v)
 				    sd->lb_nobusyq[itype],
 				    sd->lb_nobusyg[itype]);
 			}
-			seq_printf(seq, " %u %u %u %u %u %u %u %u %u %u %u %u\n",
+			seq_printf(seq,
+				   " %u %u %u %u %u %u %u %u %u %u %u %u\n",
 			    sd->alb_count, sd->alb_failed, sd->alb_pushed,
 			    sd->sbe_count, sd->sbe_balanced, sd->sbe_pushed,
 			    sd->sbf_count, sd->sbf_balanced, sd->sbf_pushed,

trunk/kernel/time/tick-sched.c

@@ -133,6 +133,8 @@ void tick_nohz_update_jiffies(void)
 	if (!ts->tick_stopped)
 		return;
 
+	touch_softlockup_watchdog();
+
 	cpu_clear(cpu, nohz_cpu_mask);
 	now = ktime_get();
 

trunk/mm/page_alloc.c

@@ -305,7 +305,6 @@ static inline void prep_zero_page(struct page *page, int order, gfp_t gfp_flags)
 {
 	int i;
 
-	VM_BUG_ON((gfp_flags & (__GFP_WAIT | __GFP_HIGHMEM)) == __GFP_HIGHMEM);
 	/*
 	 * clear_highpage() will use KM_USER0, so it's a bug to use __GFP_ZERO
 	 * and __GFP_HIGHMEM from hard or soft interrupt context.

trunk/mm/shmem.c

@@ -1072,7 +1072,7 @@ shmem_alloc_page(gfp_t gfp, struct shmem_inode_info *info,
 	pvma.vm_policy = mpol_shared_policy_lookup(&info->policy, idx);
 	pvma.vm_pgoff = idx;
 	pvma.vm_end = PAGE_SIZE;
-	page = alloc_page_vma(gfp | __GFP_ZERO, &pvma, 0);
+	page = alloc_page_vma(gfp, &pvma, 0);
 	mpol_free(pvma.vm_policy);
 	return page;
 }
@@ -1093,7 +1093,7 @@ shmem_swapin(struct shmem_inode_info *info,swp_entry_t entry,unsigned long idx)
 static inline struct page *
 shmem_alloc_page(gfp_t gfp,struct shmem_inode_info *info, unsigned long idx)
 {
-	return alloc_page(gfp | __GFP_ZERO);
+	return alloc_page(gfp);
 }
 #endif
 
@@ -1306,6 +1306,7 @@ static int shmem_getpage(struct inode *inode, unsigned long idx,
 
 		info->alloced++;
 		spin_unlock(&info->lock);
+		clear_highpage(filepage);
 		flush_dcache_page(filepage);
 		SetPageUptodate(filepage);
 	}