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tests/qtest/virtio-iommu-test: Don't pass uninitialized data into qtest_memwrite

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Valgrind complains about:

Use of uninitialised value of size 8
&
Conditional jump or move depends on uninitialised value(s)

both at:
   at 0x5265931: _itoa_word (_itoa.c:180)
   by 0x527EEC7: __vfprintf_internal (vfprintf-internal.c:1687)
   by 0x528C8B0: __vsprintf_internal (iovsprintf.c:96)
   by 0x526B920: sprintf (sprintf.c:30)
   by 0x1296C7: qtest_memwrite (libqtest.c:1273)
   by 0x193C04: send_map (virtio-iommu-test.c:125)
   by 0x194392: test_attach_detach (virtio-iommu-test.c:214)
   by 0x17BDE7: run_one_test (qos-test.c:181)
   by 0x4B0699D: test_case_run (gtestutils.c:2900)
   by 0x4B0699D: g_test_run_suite_internal (gtestutils.c:2988)
   by 0x4B068B2: g_test_run_suite_internal (gtestutils.c:3005)
   by 0x4B068B2: g_test_run_suite_internal (gtestutils.c:3005)
   by 0x4B068B2: g_test_run_suite_internal (gtestutils.c:3005)
 Uninitialised value was created by a stack allocation
   at 0x193AFD: send_map (virtio-iommu-test.c:103)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20241209204427.17763-5-farosas@suse.de>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
This commit is contained in:
Fabiano Rosas 2024-12-09 17:44:25 -03:00
parent a475e5de01
commit 9a9320a543
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
tests/qtest/virtio-iommu-test.c
View file

@ -105,7 +105,7 @@ static int send_map(QTestState *qts, QVirtioIOMMU *v_iommu,
QVirtQueue *vq = v_iommu->vq;
uint64_t ro_addr, wr_addr;
uint32_t free_head;
struct virtio_iommu_req_map req;
struct virtio_iommu_req_map req = {};
size_t ro_size = sizeof(req) - sizeof(struct virtio_iommu_req_tail);
size_t wr_size = sizeof(struct virtio_iommu_req_tail);
struct virtio_iommu_req_tail buffer;
@ -147,7 +147,7 @@ static int send_unmap(QTestState *qts, QVirtioIOMMU *v_iommu,
QVirtQueue *vq = v_iommu->vq;
uint64_t ro_addr, wr_addr;
uint32_t free_head;
struct virtio_iommu_req_unmap req;
struct virtio_iommu_req_unmap req = {};
size_t ro_size = sizeof(req) - sizeof(struct virtio_iommu_req_tail);
size_t wr_size = sizeof(struct virtio_iommu_req_tail);
struct virtio_iommu_req_tail buffer;