From: Luis Chamberlain <mcgrof@xxxxxxxxxx> Subject: lib/test_kmod.c: fix rmmod double free We free the misc device string twice on rmmod; fix this. Without this we cannot remove the module without crashing. Link: http://lkml.kernel.org/r/20181124050500.5257-1-mcgrof@xxxxxxxxxx Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx> Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> [4.12+] Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/test_kmod.c | 1 - 1 file changed, 1 deletion(-) --- a/lib/test_kmod.c~test_kmod-fix-rmmod-double-free +++ a/lib/test_kmod.c @@ -1214,7 +1214,6 @@ void unregister_test_dev_kmod(struct kmo dev_info(test_dev->dev, "removing interface\n"); misc_deregister(&test_dev->misc_dev); - kfree(&test_dev->misc_dev.name); mutex_unlock(&test_dev->config_mutex); mutex_unlock(&test_dev->trigger_mutex); _
