Change Details

This pkt-drill script will currently cause a crash without the patch. With the patch everything works as it should. // https://syzkaller.appspot.com/bug?id=d7af235bf0fc9316b790bafe2a868fa7d69dfdc9 0.00 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0.00 setsockopt(3, IPPROTO_TCP, TCP_FUNCTION_BLK, {function_set_name="rack", pcbcnt=0}, 36) = 0 +0.00 sendto(3, ..., 0, MSG_EOF, ..., ...) = 0 +0.00 setsockopt(3,IPPROTO_TCP,TCP_NOOPT, [1], 4) = 0 +0.00 shutdown(3, SHUT_WR) = 0 +0.00 close(3) = 0

This pkt-drill script will currently cause a crash without the patch. With the patch everything works as it should. ``` // https://syzkaller.appspot.com/bug?id=d7af235bf0fc9316b790bafe2a868fa7d69dfdc9 0.00 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0.00 setsockopt(3, IPPROTO_TCP, TCP_FUNCTION_BLK, {function_set_name="rack", pcbcnt=0}, 36) = 0 +0.00 sendto(3, ..., 0, MSG_EOF, ..., ...) = 0 +0.00 setsockopt(3,IPPROTO_TCP,TCP_NOOPT, [1], 4) = 0 +0.00 shutdown(3, SHUT_WR) = 0 +0.00 close(3) = 0 ```

This pkt-drill script will currently cause a crash without the patch. With the patch everything works as it should. ``` // https://syzkaller.appspot.com/bug?id=d7af235bf0fc9316b790bafe2a868fa7d69dfdc9 0.00 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 +0.00 setsockopt(3, IPPROTO_TCP, TCP_FUNCTION_BLK, {function_set_name="rack", pcbcnt=0}, 36) = 0 +0.00 sendto(3, ..., 0, MSG_EOF, ..., ...) = 0 +0.00 setsockopt(3,IPPROTO_TCP,TCP_NOOPT, [1], 4) = 0 +0.00 shutdown(3, SHUT_WR) = 0 +0.00 close(3) = 0 ```