From: "Matwey V. Kornilov" <matwey@sai.msu.ru> serial8250_em485_init() is supposed to be protected with p->port.lock spinlock. This may lead to issues when kmalloc sleeps, so it is better to use GFP_ATOMIC in this spinlocked context. Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Reported-by: Ильяс Гасанов <torso.nafi@gmail.com> Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Patch-mainline: Queued in tty-next for 4.6-rc1 Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git Git-commit: b18a183eaac25bd8dc51eab85437c7253f5c31d1 Signed-off-by: Matwey V. Kornilov <matwey.kornilov@gmail.com> --- drivers/tty/serial/8250/8250_port.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index e376cfa..2ffda79 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -588,7 +588,7 @@ int serial8250_em485_init(struct uart_8250_port *p) if (p->em485 != NULL) return 0; - p->em485 = kmalloc(sizeof(struct uart_8250_em485), GFP_KERNEL); + p->em485 = kmalloc(sizeof(struct uart_8250_em485), GFP_ATOMIC); if (p->em485 == NULL) return -ENOMEM; -- cgit v0.12 -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org