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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:yUl9vw77GE5w3XREkoJr7h6aGc6mBfwWYm1X21eLDRSQrhvJwYo WxM7Tm9iVLjPadiRjn04uDNaRbl9d0iRJNsEIHYW0bv2z1y9z8HqYdJ9JOZ2d6XztRbu2MJ L8ObK5jltsa+BYiX1TP3BnKpxYFeDKLDcSbYDyQMq1qtQNiwprlZhBzJa3DL/KG5zy/AdrE WyAxL6Ow903KzVyijK2pw== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:eBZDZzTNPvc=:mPM2P4ywaupRNhQli96Ske qF+S6NHMshiv1pCDld0LfE49MT4CytrudOOO/A8kAACMBP8nHCUAqkuhj0e4kXKswEF7dZxcE rETYuBEzqqqCHJA3b3c0do/m9y73Eojs5Jy/RlJiACSXCBkd+ZrgtklX6v0eVg19BeXddFoAe Ly+9Dz1jO3lOy58eGeiGRWEl04RJUJASQKtSH7q7QOXE28eCeu3q9j64SMqyQEvJXmeJhRqco mg9+s1XhmhabdE4nj3VN1yhA67rfmheMbnyiuJ9gB3ueUg3CgmD2JuPvGE58n2wb2NvNPnKlX 1oZ4EirDcUA2iv2SFInTnQOW3bk+kMwp1aHvtgiS1RSPkObxBWkdVwVPaxwj9RukkRixnRvSV dsuIg5u4NjEElS7cDgh7cgFCOSZLmfP5BNl5ETfkM7P/2yINRecKEqlC0dJk8WBklSNSTrXrN CCVoaA1HRq2q3l4QHDtSOPZvYfcnrfvi/pM4nJ5Y5K3s3xgyGktUaxoJTssJsz2MWzlCxsum8 XIR7OmPR4XPEcpOp412rdRmfS0Mgy2MOnGbVkuthbk+/iN0KxpndcbWwkmjuz/38Pe+I+esLX rOgAYb1Fq6tNLoRo+rjvxhtkK0jeCNGCUSW8sy47NpuYO5TUauexE4AAKkidxbxgwa6mSceQp 0BdpmdVj+DjmkvBrmysOtO706lzkQujJNPLr4646q+jRPC2Un7yg4N1vURx1V4sVEbPzPNtlM fL3Qd+g1otDVj2Y8NAVquyoDImjoI6JhyXlqLgpV13J4AOlPyAkbLkLNGNcVSZP4A0ojJdOOl 4ezbBONzIPnjo/T5m3MZxSHVLz49P4GQCkJ6mGFfF1owdOXaDtfnRfOYeiGOaFAaLD3tF9Fu5 ZijZkZ0ddLhQiCwGCKH8fbuRUcy1hpa3bQihW4MB4nXXF1KfN3AcTOKhmMX6CnVrNn5p/pMwq CTZ4oVJim/KRaXe6L+ylRF6ZIunKcQ6d5M/HdIgp+919o+SJYHUGOBimIa5JCMv3pAdX397kk bYrlhVyqJ97cvLmW0SMlNt5GV3hHfTGG6JPJBoPXO0XFp8pwdrQVMLvwN/lNOWQQO9Ysqt2gi 8L1q0OlNPu+Fyg4QPiI3jZEbslK8XMPQlUB9udXGCNSbGvtd0c7eMEXaeZUa+Ahbqh6ZI++O5 wkcT0VIflEsQxdB732VXAW/Rete9n7C3yzq0rszXSbXB9AK1VCJPrTVHG1E7OeUWAGPvo9kCC IaE8x8X96W4yYxEOy Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I have tried another small script out for the semantic patch language. This source code analysis approach points out that the function =E2=80=9Cg= map_find_shadow=E2=80=9D is called two times by the function =E2=80=9Cgmap_shadow=E2=80=9D. https://elixir.bootlin.com/linux/v5.7-rc3/source/arch/s390/mm/gmap.c#L1628 https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/ar= ch/s390/mm/gmap.c Null pointer checks are performed at these places. The function =E2=80=9Cgmap_find_shadow=E2=80=9D is documented in the same = source file that the pointer =E2=80=9CERR_PTR(-EAGAIN)=E2=80=9D can eventually be retu= rned. Are the referenced gmap data structures always initialised here? Regards, Markus