[PATCH 8/9] memcg: accounting for tty_struct objects
From: Vasily Averin <hidden>
Date: 2021-03-09 08:04:53
Also in:
linux-mm
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Objects can be created from memcg-limited tasks but its misuse may lead to host OOM. Signed-off-by: Vasily Averin <redacted> --- drivers/tty/tty_io.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 74733ec..a3b881b 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c@@ -1503,7 +1503,7 @@ void tty_save_termios(struct tty_struct *tty) /* Stash the termios data */ tp = tty->driver->termios[idx]; if (tp == NULL) { - tp = kmalloc(sizeof(*tp), GFP_KERNEL); + tp = kmalloc(sizeof(*tp), GFP_KERNEL_ACCOUNT); if (tp == NULL) return; tty->driver->termios[idx] = tp;
@@ -3128,7 +3128,7 @@ struct tty_struct *alloc_tty_struct(struct tty_driver *driver, int idx) { struct tty_struct *tty; - tty = kzalloc(sizeof(*tty), GFP_KERNEL); + tty = kzalloc(sizeof(*tty), GFP_KERNEL_ACCOUNT); if (!tty) return NULL;
--
1.8.3.1