diff options
| author | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:24:58 +0000 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-06-30 12:27:06 +0000 |
| commit | 33606b41d35115f887ea688b1a16f2ff85bf2fe4 (patch) | |
| tree | 406b2c7b19a087ba437c68f3dbf0b589fa1d6150 /results/scraper/launchpad-without-comments/1909823 | |
| parent | adedf8771bc4de3113041ca21bd4d0d1c0014b6a (diff) | |
| download | qemu-analysis-33606b41d35115f887ea688b1a16f2ff85bf2fe4.tar.gz qemu-analysis-33606b41d35115f887ea688b1a16f2ff85bf2fe4.zip | |
add launchpad bug reports without comments
Diffstat (limited to 'results/scraper/launchpad-without-comments/1909823')
| -rw-r--r-- | results/scraper/launchpad-without-comments/1909823 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/results/scraper/launchpad-without-comments/1909823 b/results/scraper/launchpad-without-comments/1909823 new file mode 100644 index 000000000..258f15504 --- /dev/null +++ b/results/scraper/launchpad-without-comments/1909823 @@ -0,0 +1,7 @@ +RDPMC check on PCE is backwards + +At [this line](https://github.com/qemu/qemu/blob/75ee62ac606bfc9eb59310b9446df3434bf6e8c2/target/i386/tcg/misc_helper.c#L225) the check on CR4_PCE_MASK is backwards: it's raising an exception if the flag is set (and CPL != 0) rather than if the flag is clear. + +It's low priority at the moment because the instruction isn't implemented, so you get an illegal opcode exception when expecting a GPF, or vice versa, but it's a time bomb for if it is ever implemented. + +The Intel docs also indicate that CR0.PE influences the protection; I don't know if that's already reflected in env->hflags & HF_CPL_MASK. \ No newline at end of file |