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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260228-abyss-mmap-relocation-v1-4-c8ec0476894b@astrafall.org> References: <20260228-abyss-mmap-relocation-v1-0-c8ec0476894b@astrafall.org> In-Reply-To: <20260228-abyss-mmap-relocation-v1-0-c8ec0476894b@astrafall.org> To: qemu-devel@nongnu.org Cc: Laurent Vivier , Warner Losh , =?utf-8?q?Alex_R=C3=B8nne_Petersen?= , Richard Henderson , Pierrick Bouvier , Kyle Evans , =?utf-8?q?Alex_Benn=C3=A9e?= , Bingwu Zhang X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1372; i=xtex@astrafall.org; h=from:subject:message-id; bh=Ch4YHmmE4DsC/m7FHP6NO4qOoidbitpNHb4YWm7olLM=; b=owGbwMvMwCW2U4Ij7wZL9ETG02pJDJkLT0178499mvyh5r2GEW1VLb4FFv2RE78dzL/kvypyi jhrk8uzjoksDGJcDJZiiixFhg3erDrp/KLLymVh5rAygQyRFmlgYGBgYGHgy03MKzXSMdIz1TbU MzTUMdIxYuDiFICpNnJg+J//xNxe5O7uvjdLO4vZOx4/XqhmvECgo7curieaqTjXjYPhn2nkkQy ObRcfFyfEZU61iw+aEycUmHp8rtD0XzeCLRLW8gMA X-Developer-Key: i=xtex@astrafall.org; a=openpgp; fpr=7231804B052C670F15A6771DB918086ED8045B91 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=157.180.15.194; envelope-from=xtex@envs.net; helo=mail.envs.net X-Spam_score_int: -9 X-Spam_score: -1.0 X-Spam_bar: - X-Spam_report: (-1.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.706, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.401, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Fri, 27 Feb 2026 12:17:26 -0500 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @envs.net) X-ZM-MESSAGEID: 1772212702201158500 From: Bingwu Zhang Unfixed mmap calls where start > reserved_va or the max guest addr should have a valid result. Signed-off-by: Bingwu Zhang --- tests/tcg/multiarch/test-mmap.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tests/tcg/multiarch/test-mmap.c b/tests/tcg/multiarch/test-mma= p.c index 88f7a04101a3..2bfa52912704 100644 --- a/tests/tcg/multiarch/test-mmap.c +++ b/tests/tcg/multiarch/test-mmap.c @@ -497,6 +497,20 @@ void check_shrink_mmaps(void) fprintf(stdout, " passed\n"); } =20 +void check_mmaps_beyond_addr_space(void) +{ + unsigned char *addr; + addr =3D mmap((void *)(-(unsigned long)pagesize * 10), pagesize * 2, + PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + fprintf(stdout, "%s addr=3D%p errno=3D%d", __func__, (void *)addr, err= no); + fail_unless(addr !=3D MAP_FAILED); + + memcpy(dummybuf, addr, 2 * pagesize); + munmap(addr, 2 * pagesize); + + fprintf(stdout, " passed\n"); +} + int main(int argc, char **argv) { char tempname[] =3D "/tmp/.cmmapXXXXXX"; @@ -540,6 +554,7 @@ int main(int argc, char **argv) check_file_unfixed_eof_mmaps(); check_invalid_mmaps(); check_shrink_mmaps(); + check_mmaps_beyond_addr_space(); =20 /* Fails at the moment. */ /* check_aligned_anonymous_fixed_mmaps_collide_with_host(); */ --=20 2.52.0