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-rw-r--r--kernel/kexec.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 37cad75cf49..fcdd5d2bc3f 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -995,7 +995,8 @@ asmlinkage long sys_kexec_load(unsigned long entry, unsigned long nr_segments,
image = xchg(dest_image, image);
out:
- xchg(&kexec_lock, 0); /* Release the mutex */
+ locked = xchg(&kexec_lock, 0); /* Release the mutex */
+ BUG_ON(!locked);
kimage_free(image);
return result;
@@ -1061,7 +1062,8 @@ void crash_kexec(struct pt_regs *regs)
machine_crash_shutdown(&fixed_regs);
machine_kexec(kexec_crash_image);
}
- xchg(&kexec_lock, 0);
+ locked = xchg(&kexec_lock, 0);
+ BUG_ON(!locked);
}
}