diff options
Diffstat (limited to 'drivers/char/tty_io.c')
| -rw-r--r-- | drivers/char/tty_io.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c index f70a47eadb52..a88b94a82b14 100644 --- a/drivers/char/tty_io.c +++ b/drivers/char/tty_io.c @@ -398,7 +398,7 @@ int tty_insert_flip_string_flags(struct tty_struct *tty, while (unlikely(size > copied)); return copied; } -EXPORT_SYMBOL_GPL(tty_insert_flip_string_flags); +EXPORT_SYMBOL(tty_insert_flip_string_flags); void tty_schedule_flip(struct tty_struct *tty) { @@ -2723,7 +2723,11 @@ static void __do_SAK(void *arg) } task_lock(p); if (p->files) { - rcu_read_lock(); + /* + * We don't take a ref to the file, so we must + * hold ->file_lock instead. + */ + spin_lock(&p->files->file_lock); fdt = files_fdtable(p->files); for (i=0; i < fdt->max_fds; i++) { filp = fcheck_files(p->files, i); @@ -2734,11 +2738,11 @@ static void __do_SAK(void *arg) printk(KERN_NOTICE "SAK: killed process %d" " (%s): fd#%d opened to the tty\n", p->pid, p->comm, i); - send_sig(SIGKILL, p, 1); + force_sig(SIGKILL, p); break; } } - rcu_read_unlock(); + spin_unlock(&p->files->file_lock); } task_unlock(p); } while_each_thread(g, p); |