diff options
| author | Dmitry Vyukov <dvyukov@google.com> | 2022-10-30 16:03:37 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2022-11-02 11:58:13 +0000 |
| commit | 7e8cdc97148c6ba66671e88ad9f7d434f4df3438 (patch) | |
| tree | 700f7eb05118ab08ea76fb76dca4a81c6d3072d2 /net/nfc/rawsock.c | |
| parent | 82fd151d38d9fda714c5bb2e9e79ecd6bdc72da6 (diff) | |
nfc: Add KCOV annotations
Add remote KCOV annotations for NFC processing that is done
in background threads. This enables efficient coverage-guided
fuzzing of the NFC subsystem.
The intention is to add annotations to background threads that
process skb's that were allocated in syscall context
(thus have a KCOV handle associated with the current fuzz test).
This includes nci_recv_frame() that is called by the virtual nci
driver in the syscall context.
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Bongsu Jeon <bongsu.jeon@samsung.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/nfc/rawsock.c')
| -rw-r--r-- | net/nfc/rawsock.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c index 8dd569765f96..5125392bb68e 100644 --- a/net/nfc/rawsock.c +++ b/net/nfc/rawsock.c @@ -12,6 +12,7 @@ #include <net/tcp_states.h> #include <linux/nfc.h> #include <linux/export.h> +#include <linux/kcov.h> #include "nfc.h" @@ -189,6 +190,7 @@ static void rawsock_tx_work(struct work_struct *work) } skb = skb_dequeue(&sk->sk_write_queue); + kcov_remote_start_common(skb_get_kcov_handle(skb)); sock_hold(sk); rc = nfc_data_exchange(dev, target_idx, skb, @@ -197,6 +199,7 @@ static void rawsock_tx_work(struct work_struct *work) rawsock_report_error(sk, rc); sock_put(sk); } + kcov_remote_stop(); } static int rawsock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) |