If the task is NULL and the if condition is true then task->pid would cause null pointer dereference. Fix this by adding additional null check.
Signed-off-by: Gaurav Singh <[email protected]> --- arch/ia64/kernel/perfmon_default_smpl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/ia64/kernel/perfmon_default_smpl.c b/arch/ia64/kernel/perfmon_default_smpl.c index a40c56020fc5..2732b4cf4296 100644 --- a/arch/ia64/kernel/perfmon_default_smpl.c +++ b/arch/ia64/kernel/perfmon_default_smpl.c @@ -111,7 +111,7 @@ default_handler(struct task_struct *task, void *buf, pfm_ovfl_arg_t *arg, struct unsigned char ovfl_notify; if (unlikely(buf == NULL || arg == NULL|| regs == NULL || task == NULL)) { - DPRINT(("[%d] invalid arguments buf=%p arg=%p\n", task->pid, buf, arg)); + DPRINT(("[%d] invalid arguments buf=%p arg=%p\n", task? task->pid : -1, buf, arg)); return -EINVAL; } -- 2.17.1
