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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=156.151.31.86; envelope-from=david.edmondson@oracle.com; helo=userp2130.oracle.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S. Tsirkin" , Richard Henderson , David Edmondson , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @oracle.onmicrosoft.com) Content-Type: text/plain; charset="utf-8" Because sizeof(struct elf64_note) =3D=3D sizeof(struct elf32_note), attempting to use the size of the currently defined struct elf_note as a discriminator for whether the object being loaded is 64 bit in load_elf() fails. Instead, take advantage of the existing glue parameter SZ, which is defined as 32 or 64 in the respective variants of load_elf(). Fixes: 696aa04c84c6 ("elf-ops.h: Add get_elf_note_type()") Signed-off-by: David Edmondson Reviewed-by: Alex Benn=C3=A9e Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Stefano Garzarella --- include/hw/elf_ops.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/include/hw/elf_ops.h b/include/hw/elf_ops.h index 8e8436831d..78409ab34a 100644 --- a/include/hw/elf_ops.h +++ b/include/hw/elf_ops.h @@ -598,9 +598,7 @@ static int glue(load_elf, SZ)(const char *name, int fd, nhdr =3D glue(get_elf_note_type, SZ)(nhdr, file_size, ph->p_al= ign, *(uint64_t *)translate_opaq= ue); if (nhdr !=3D NULL) { - bool is64 =3D - sizeof(struct elf_note) =3D=3D sizeof(struct elf64_not= e); - elf_note_fn((void *)nhdr, (void *)&ph->p_align, is64); + elf_note_fn((void *)nhdr, (void *)&ph->p_align, SZ =3D=3D = 64); } data =3D NULL; } --=20 2.30.0 From nobody Mon May 20 18:59:48 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=156.151.31.86; envelope-from=david.edmondson@oracle.com; helo=userp2130.oracle.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 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, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S. Tsirkin" , Richard Henderson , David Edmondson , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @oracle.onmicrosoft.com) Content-Type: text/plain; charset="utf-8" When loading the PVH start address from a 32 bit ELF note, extract only the appropriate number of bytes. Fixes: ab969087da65 ("pvh: Boot uncompressed kernel using direct boot ABI") Signed-off-by: David Edmondson Reviewed-by: Stefano Garzarella --- hw/i386/x86.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/hw/i386/x86.c b/hw/i386/x86.c index 6329f90ef9..7865660e2c 100644 --- a/hw/i386/x86.c +++ b/hw/i386/x86.c @@ -690,6 +690,8 @@ static uint64_t read_pvh_start_addr(void *arg1, void *a= rg2, bool is64) elf_note_data_addr =3D ((void *)nhdr64) + nhdr_size64 + QEMU_ALIGN_UP(nhdr_namesz, phdr_align); + + pvh_start_addr =3D *elf_note_data_addr; } else { struct elf32_note *nhdr32 =3D (struct elf32_note *)arg1; uint32_t nhdr_size32 =3D sizeof(struct elf32_note); @@ -699,9 +701,9 @@ static uint64_t read_pvh_start_addr(void *arg1, void *a= rg2, bool is64) elf_note_data_addr =3D ((void *)nhdr32) + nhdr_size32 + QEMU_ALIGN_UP(nhdr_namesz, phdr_align); - } =20 - pvh_start_addr =3D *elf_note_data_addr; + pvh_start_addr =3D *(uint32_t *)elf_note_data_addr; + } =20 return pvh_start_addr; } --=20 2.30.0