diff options
Diffstat (limited to 'kernel/profile.c')
| -rw-r--r-- | kernel/profile.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/profile.c b/kernel/profile.c index e97e42aaf202..b5ce18b6f1b9 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -109,6 +109,13 @@ int __ref profile_init(void) /* only text is profiled */ prof_len = (_etext - _stext) >> prof_shift; + + if (!prof_len) { + pr_warn("profiling shift: %u too large\n", prof_shift); + prof_on = 0; + return -EINVAL; + } + buffer_bytes = prof_len*sizeof(atomic_t); if (!alloc_cpumask_var(&prof_cpu_mask, GFP_KERNEL)) |