sched: Fix a memory leak in __sdt_free()

This patch fixes the following memory leak: unreferenced object 0xffff880107266800 (size 512): comm "sched-powersave", pid 3718, jiffies 4323097853 (age 27495.450s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff81133940>] create_object+0x187/0x28b [<ffffffff814ac103>] kmemleak_alloc+0x73/0x98 [<ffffffff811232ba>] __kmalloc_node+0x104/0x159 [<ffffffff81044b98>] kzalloc_node.clone.97+0x15/0x17 [<ffffffff8104cb90>] build_sched_domains+0xb7/0x7f3 [<ffffffff8104d4df>] partition_sched_domains+0x1db/0x24a [<ffffffff8109ee4a>] do_rebuild_sched_domains+0x3b/0x47 [<ffffffff810a00c7>] rebuild_sched_domains+0x10/0x12 [<ffffffff8104d5ba>] sched_power_savings_store+0x6c/0x7b [<ffffffff8104d5df>] sched_mc_power_savings_store+0x16/0x18 [<ffffffff8131322c>] sysdev_class_store+0x20/0x22 [<ffffffff81193876>] sysfs_write_file+0x108/0x144 [<ffffffff81135b10>] vfs_write+0xaf/0x102 [<ffffffff81135d23>] sys_write+0x4d/0x74 [<ffffffff814c8a42>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff

WANG Cong committed 15 years ago

Commit feff8fa1 parent 9c40cef1 file · +1 −0Browse files

Unified · Split

kernel/sched.c+1−0

@@ -7453,6 +7453,7 @@ static void __sdt_free(const struct cpumask *cpu_map) · 7452 unmodified lines
7453	struct sched_domain sd = per_cpu_ptr(sdd->sd, j);	7453	struct sched_domain sd = per_cpu_ptr(sdd->sd, j);
7454	if (sd && (sd->flags & SD_OVERLAP))	7454	if (sd && (sd->flags & SD_OVERLAP))
7455	free_sched_groups(sd->groups, 0);	7455	free_sched_groups(sd->groups, 0);
		7456	kfree(*per_cpu_ptr(sdd->sd, j));
7456	kfree(*per_cpu_ptr(sdd->sg, j));	7457	kfree(*per_cpu_ptr(sdd->sg, j));
7457	kfree(*per_cpu_ptr(sdd->sgp, j));	7458	kfree(*per_cpu_ptr(sdd->sgp, j));
7458	}	7459	}