diff options
Diffstat (limited to 'results/classifier/zero-shot-user-mode/output/instruction/947')
| -rw-r--r-- | results/classifier/zero-shot-user-mode/output/instruction/947 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/results/classifier/zero-shot-user-mode/output/instruction/947 b/results/classifier/zero-shot-user-mode/output/instruction/947 new file mode 100644 index 000000000..fbabfbaae --- /dev/null +++ b/results/classifier/zero-shot-user-mode/output/instruction/947 @@ -0,0 +1,19 @@ +instruction: 0.760 +runtime: 0.142 +syscall: 0.098 + + + +TCG AARCH64 Segmentation fault when helper function is called +Description of problem: +Segmentation fault in the TCG thread. +The issue occurs in the generated code when branching to (helper)lookup_tb_ptr (see op longs). +It seems that the generated instruction don't load the upper32 of the address of lookup_tb_ptr in the register before branching to it. According to LLDB, the program tries to access 0x1cffe060 while the right address 0x7ff71cffe060 (see debugger logs). +Additional information: +The issue seems to be located at https://gitlab.com/qemu-project/qemu/-/blob/master/tcg/aarch64/tcg-target.c.inc#L1091 +`t2 = t1 & ~(0xffffUL << s1);`. +The fix would be `t2 = t1 & ~(0xffffULL << s1);` + + +[lldb.log](/uploads/6a1d57eaecae4a375c6ada7384489876/lldb.log) +[qemu_segmentation.log](/uploads/e3c2d6d42291ff7d1ff8d37341e3da1d/qemu_segmentation.log) |