diff options
Diffstat (limited to 'results/classifier/deepseek-2-tmp/output/mistranslation/1893003')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/output/mistranslation/1893003 | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/results/classifier/deepseek-2-tmp/output/mistranslation/1893003 b/results/classifier/deepseek-2-tmp/output/mistranslation/1893003 deleted file mode 100644 index 487d3448..00000000 --- a/results/classifier/deepseek-2-tmp/output/mistranslation/1893003 +++ /dev/null @@ -1,39 +0,0 @@ - -qemu linux-user doesn't translate host/target data for iovec I/O - -When using iovec I/O functions (like `readv`), no data translation happens. I'm hitting this issue with libevent upon constructing a bufferevent over an inotify descriptor, and then building for either ppc64 or s390x (both big-endian) on x86_64 (little-endian) and running resulting code with qemu-ppc64 or qemu-s390x on Gentoo using latest QEMU version available (5.0.0-r2). - -The code in question is in https://github.com/transmission/transmission/blob/master/libtransmission/watchdir-inotify.c (`tr_watchdir_inotify_new`, `tr_watchdir_inotify_on_event`). - -While `read` syscall is handled properly, `readv` (which libevent is using in my case) doesn't have any logic to call `host_to_target_data_inotify` or any other translation function, leaving inotify data unchanged (with values in little-endian), which then leads to unit test failures. Quoting `do_syscall1` implementation bits for the reference: - ----8<---begin--- - case TARGET_NR_read: - if (arg2 == 0 && arg3 == 0) { - return get_errno(safe_read(arg1, 0, 0)); - } else { - if (!(p = lock_user(VERIFY_WRITE, arg2, arg3, 0))) - return -TARGET_EFAULT; - ret = get_errno(safe_read(arg1, p, arg3)); - if (ret >= 0 && - fd_trans_host_to_target_data(arg1)) { - ret = fd_trans_host_to_target_data(arg1)(p, ret); - } - unlock_user(p, arg2, ret); - } - return ret; -... - case TARGET_NR_readv: - { - struct iovec *vec = lock_iovec(VERIFY_WRITE, arg2, arg3, 0); - if (vec != NULL) { - ret = get_errno(safe_readv(arg1, vec, arg3)); - unlock_iovec(vec, arg2, arg3, 1); - } else { - ret = -host_to_target_errno(errno); - } - } - return ret; ----8<---end--- - -To reiterate, the issue is not only with `readv` but with other iovec functions as well. \ No newline at end of file |
