A new buffer for a packet is created when a icmp packet is received. This happens in a context with disabled irq. Thus we are not allowed to sleep or call function which might sleep. kmalloc must be called with GFP_ATOMIC instead of GFP_KERNEL to ensure that it does not sleep.
Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de --- batman-adv-kernelland/icmp_socket.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/batman-adv-kernelland/icmp_socket.c b/batman-adv-kernelland/icmp_socket.c index 33d2714..becbb5b 100644 --- a/batman-adv-kernelland/icmp_socket.c +++ b/batman-adv-kernelland/icmp_socket.c @@ -292,7 +292,7 @@ static void bat_socket_add_packet(struct socket_client *socket_client, struct socket_packet *socket_packet; unsigned long flags;
- socket_packet = kmalloc(sizeof(struct socket_packet), GFP_KERNEL); + socket_packet = kmalloc(sizeof(struct socket_packet), GFP_ATOMIC);
if (!socket_packet) return;