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authorChristian Krinitsin <mail@krinitsin.com>2025-07-06 16:43:19 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-06 16:43:19 +0000
commit238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd (patch)
treecd8a1b75ba7b3543eb7fe6857f408e7be4d9fd0b /results/classifier/gemma3:27b/instruction/1785734
parent96049c939b1916d80532630d63c14e04d5244f1d (diff)
downloadqemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.tar.gz
qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.zip
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Diffstat (limited to 'results/classifier/gemma3:27b/instruction/1785734')
-rw-r--r--results/classifier/gemma3:27b/instruction/178573478
1 files changed, 78 insertions, 0 deletions
diff --git a/results/classifier/gemma3:27b/instruction/1785734 b/results/classifier/gemma3:27b/instruction/1785734
new file mode 100644
index 000000000..1346c5a11
--- /dev/null
+++ b/results/classifier/gemma3:27b/instruction/1785734
@@ -0,0 +1,78 @@
+
+
+
+movdqu partial write at page boundary
+
+In TCG mode, when a 16-byte write instruction (such as movdqu) is executed at a page boundary and causes a page fault, a partial write is executed in the first page. See the attached code for an example.
+
+Tested on the qemu-3.0.0-rc1 release.
+
+
+% gcc -m32 qemu-bug2.c && ./a.out && echo && qemu-i386 ./a.out
+*(0x70000ff8+ 0) = aa
+*(0x70000ff8+ 1) = aa
+*(0x70000ff8+ 2) = aa
+*(0x70000ff8+ 3) = aa
+*(0x70000ff8+ 4) = aa
+*(0x70000ff8+ 5) = aa
+*(0x70000ff8+ 6) = aa
+*(0x70000ff8+ 7) = aa
+*(0x70000ff8+ 8) = 55
+*(0x70000ff8+ 9) = 55
+*(0x70000ff8+10) = 55
+*(0x70000ff8+11) = 55
+*(0x70000ff8+12) = 55
+*(0x70000ff8+13) = 55
+*(0x70000ff8+14) = 55
+*(0x70000ff8+15) = 55
+page fault: addr=0x70001000 err=0x7
+*(0x70000ff8+ 0) = aa
+*(0x70000ff8+ 1) = aa
+*(0x70000ff8+ 2) = aa
+*(0x70000ff8+ 3) = aa
+*(0x70000ff8+ 4) = aa
+*(0x70000ff8+ 5) = aa
+*(0x70000ff8+ 6) = aa
+*(0x70000ff8+ 7) = aa
+*(0x70000ff8+ 8) = 55
+*(0x70000ff8+ 9) = 55
+*(0x70000ff8+10) = 55
+*(0x70000ff8+11) = 55
+*(0x70000ff8+12) = 55
+*(0x70000ff8+13) = 55
+*(0x70000ff8+14) = 55
+*(0x70000ff8+15) = 55
+
+*(0x70000ff8+ 0) = aa
+*(0x70000ff8+ 1) = aa
+*(0x70000ff8+ 2) = aa
+*(0x70000ff8+ 3) = aa
+*(0x70000ff8+ 4) = aa
+*(0x70000ff8+ 5) = aa
+*(0x70000ff8+ 6) = aa
+*(0x70000ff8+ 7) = aa
+*(0x70000ff8+ 8) = 55
+*(0x70000ff8+ 9) = 55
+*(0x70000ff8+10) = 55
+*(0x70000ff8+11) = 55
+*(0x70000ff8+12) = 55
+*(0x70000ff8+13) = 55
+*(0x70000ff8+14) = 55
+*(0x70000ff8+15) = 55
+page fault: addr=0x70001000 err=0x6
+*(0x70000ff8+ 0) = 77
+*(0x70000ff8+ 1) = 66
+*(0x70000ff8+ 2) = 55
+*(0x70000ff8+ 3) = 44
+*(0x70000ff8+ 4) = 33
+*(0x70000ff8+ 5) = 22
+*(0x70000ff8+ 6) = 11
+*(0x70000ff8+ 7) = 0
+*(0x70000ff8+ 8) = 55
+*(0x70000ff8+ 9) = 55
+*(0x70000ff8+10) = 55
+*(0x70000ff8+11) = 55
+*(0x70000ff8+12) = 55
+*(0x70000ff8+13) = 55
+*(0x70000ff8+14) = 55
+*(0x70000ff8+15) = 55
\ No newline at end of file