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Diffstat (limited to 'results/classifier/deepseek-2/reasoning/mistranslation/1728116')
| -rw-r--r-- | results/classifier/deepseek-2/reasoning/mistranslation/1728116 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/results/classifier/deepseek-2/reasoning/mistranslation/1728116 b/results/classifier/deepseek-2/reasoning/mistranslation/1728116 new file mode 100644 index 000000000..a02374bd2 --- /dev/null +++ b/results/classifier/deepseek-2/reasoning/mistranslation/1728116 @@ -0,0 +1,25 @@ +<think> +Alright, let's try to figure out how to classify this bug report for QEMU. The issue is that when a user runs a guest process under QEMU's Linux-user mode and tries to read from /proc/self/auxv, they get an empty file with zero bytes instead of the expected data. This causes problems for tools like procps-ng which rely on this information, leading to segmentation faults. + +Looking at the provided details, the problem was introduced by a specific commit: 7c4ee5bcc. The user suspects it might be related to a simple logic error or sign-ness issue in the code that handles the length of the auxv vector. + +The key file affected is linux-user/syscall.c, specifically around where open_self_auxv is implemented. The code changes introduced logging for 'len', which shows a very large number (18446744073709551264) followed by -352 and then 0. This suggests an integer overflow or incorrect handling of the length variable. + +In the past, this worked correctly in QEMU version 2.7.1 but broke in 2.10.1, indicating that a change between these versions caused the problem. The commit linked likely altered how the auxv vector's length is calculated or handled. + +The bug affects the user-mode virtualization layer, which intercepts system calls and emulates certain kernel behaviors for the guest process. When /proc/self/auxv is accessed, QEMU fakes this by providing data through open_self_auxv. However, due to a miscalculation in 'len', it's either not setting up the data correctly or truncating it to zero. + +The possible categories include 'mistranslation' which refers to incorrect mappings from source architecture to target. Since this issue is within the user-mode emulation and involves handling of system calls (like openat) leading to an empty auxv, it points towards a problem in how the guest's syscalls are translated or handled by QEMU. + +Other categories like 'assembly', 'device', 'graphic', etc., don't seem relevant here. It's not a translation issue between architectures but rather a miscalculation within the user-mode handling of procfs data. + +So, classifying this under 'mistranslation' makes sense because it involves incorrect processing of system calls or data structures in the guest environment by QEMU. +</think> + +The bug report pertains to an issue in how the QEMU emulator handles certain system calls and emulated file data (specifically /proc/self/auxv) in user-mode virtualization. The problem arises from a miscalculation in the length of the auxiliary vector, leading to an empty file being returned instead of meaningful data. This impacts tools relying on this information, causing failures. + +The issue is rooted in how QEMU translates and handles system calls related to procfs in the guest environment. It's not a direct assembly translation error but rather a logic or sign-ness issue within the syscall handling code. Therefore, it falls under 'mistranslation' as it relates to incorrect processing of guest OS data structures by QEMU. + +**Answer:** + +mistranslation \ No newline at end of file |