ALSA: mtpav: Don't call card private_free at probe error path

[linux-2.6-microblaze.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index 82db656..79f2c94 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -65,6 +65,7 @@
 #include <linux/vmalloc.h>
 #include <linux/io_uring.h>
 #include <linux/syscall_user_dispatch.h>
+#include <linux/coredump.h>
 
 #include <linux/uaccess.h>
 #include <asm/mmu_context.h>
@@ -1207,7 +1208,8 @@ static int unshare_sighand(struct task_struct *me)
 char *__get_task_comm(char *buf, size_t buf_size, struct task_struct *tsk)
 {
        task_lock(tsk);
-       strncpy(buf, tsk->comm, buf_size);
+       /* Always NUL terminated and zero-padded */
+       strscpy_pad(buf, tsk->comm, buf_size);
        task_unlock(tsk);
        return buf;
 }
@@ -1222,7 +1224,7 @@ void __set_task_comm(struct task_struct *tsk, const char *buf, bool exec)
 {
        task_lock(tsk);
        trace_task_rename(tsk, buf);
-       strlcpy(tsk->comm, buf, sizeof(tsk->comm));
+       strscpy_pad(tsk->comm, buf, sizeof(tsk->comm));
        task_unlock(tsk);
        perf_event_comm(tsk, exec);
 }
@@ -2098,3 +2100,37 @@ COMPAT_SYSCALL_DEFINE5(execveat, int, fd,
                                  argv, envp, flags);
 }
 #endif
+
+#ifdef CONFIG_SYSCTL
+
+static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
+               void *buffer, size_t *lenp, loff_t *ppos)
+{
+       int error = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
+
+       if (!error)
+               validate_coredump_safety();
+       return error;
+}
+
+static struct ctl_table fs_exec_sysctls[] = {
+       {
+               .procname       = "suid_dumpable",
+               .data           = &suid_dumpable,
+               .maxlen         = sizeof(int),
+               .mode           = 0644,
+               .proc_handler   = proc_dointvec_minmax_coredump,
+               .extra1         = SYSCTL_ZERO,
+               .extra2         = SYSCTL_TWO,
+       },
+       { }
+};
+
+static int __init init_fs_exec_sysctls(void)
+{
+       register_sysctl_init("fs", fs_exec_sysctls);
+       return 0;
+}
+
+fs_initcall(init_fs_exec_sysctls);
+#endif /* CONFIG_SYSCTL */