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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-21 21:21:26 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-21 21:21:26 +0200 |
| commit | 4b927bc37359dec23f67d3427fc982945f24f404 (patch) | |
| tree | 245449ef9146942dc7fffd0235b48b7e70a00bf2 /gitlab/issues/target_missing/host_missing/accel_missing/2149.toml | |
| parent | aa8bd79cec7bf6790ddb01d156c2ef2201abbaab (diff) | |
| download | emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.tar.gz emulator-bug-study-4b927bc37359dec23f67d3427fc982945f24f404.zip | |
add gitlab issues in toml format
Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/2149.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/2149.toml | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/2149.toml b/gitlab/issues/target_missing/host_missing/accel_missing/2149.toml new file mode 100644 index 00000000..176dbda7 --- /dev/null +++ b/gitlab/issues/target_missing/host_missing/accel_missing/2149.toml @@ -0,0 +1,23 @@ +id = 2149 +title = "Segfault in libvhost-user and libvduse because of invalid pointer arithmetic with indirect read" +state = "opened" +created_at = "2024-02-04T09:27:47.046Z" +closed_at = "n/a" +labels = [] +url = "https://gitlab.com/qemu-project/qemu/-/issues/2149" +host-os = "Any OS supporting libvhost-user/libvduse" +host-arch = "n/a" +qemu-version = "n/a" +guest-os = "n/a" +guest-arch = "n/a" +description = """Hello, this is my first experience communicating with open-source community. I have already reported the problem and have submitted patches through qemu-devel mailing list https://mail.gnu.org/archive/html/qemu-devel/2024-01/msg02533.html, as instructed in https://www.qemu.org/docs/master/devel/submitting-a-patch.html, albeit getting no response from any maintainer. I know, that everyone are very busy and are spammed everyday from millions of threads, but I am getting very upset, that such a trivial bug lives in code base for many years and even have been copied to "sister"-library without proper review. So, excuse me, if I am taking this issue too personally. + +The problem - when one tries to use libvhost-user\\libvduse and triggers for some reason non-zero-copy mode (like pushing a lot of data) of indirect descriptor reading routine `virtqueue_read_indirect_desc`, any time one got to read more than one descriptor - one would overwrite stack and depending on one's luck getting some weird behaviour, or simple crash moments later, when other code tries to access broken data. + +Steps to reproduce are non-trivial, because depends on one's host and VM (one simply gets random crashes here and there, with core dumps pointing somewhere around given libraries), but anyone who can read C code, can clearly see that pointer arithmetic of `struct vring_desc *desc` is wrong. + +Maybe, I got instructions wrong and posted fixes to wrong mailing list, maybe, nobody cares, so thank you for attention. I'll be glad to hear any advice on how can I help with fixing this simple error, besides what has been done already. + +Thank you.""" +reproduce = "n/a" +additional = "n/a" |