syzbot is reporting stalls at nfc_llcp_send_ui_frame() [1]. This is because nfc_llcp_send_ui_frame() is retrying the loop without any delay when nonblocking nfc_alloc_send_skb() returned NULL. Since there is no need to use MSG_DONTWAIT if we retry until sock_alloc_send_pskb() succeeds, let's use blocking call. Also, in case an unexpected error occurred, let's break the loop if blocking nfc_alloc_send_skb() failed. [1] https://syzkaller.appspot.com/bug?id=4a131cc571c3733e0eff6bc673f4e36ae48f19c6 Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reported-by: syzbot <syzbot+d29d18215e477cfbfbdd@syzkaller.appspotmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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hci | ||
nci | ||
Kconfig | ||
Makefile | ||
af_nfc.c | ||
core.c | ||
digital.h | ||
digital_core.c | ||
digital_dep.c | ||
digital_technology.c | ||
llcp.h | ||
llcp_commands.c | ||
llcp_core.c | ||
llcp_sock.c | ||
netlink.c | ||
nfc.h | ||
rawsock.c |