diff options
Diffstat (limited to 'results/classifier/accel-gemma3:12b/tcg/2423')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/tcg/2423 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/tcg/2423 b/results/classifier/accel-gemma3:12b/tcg/2423 new file mode 100644 index 000000000..b20fd1eb3 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/tcg/2423 @@ -0,0 +1,35 @@ + +`qemu -serial stdio` leaves stdout in non-blocking mode +Description of problem: +When `-serial stdio` is used, qemu exits leaving stdout in non-blocking mode. Although it [attempts](https://gitlab.com/qemu-project/qemu/-/blob/1a2d52c7fcaeaaf4f2fe8d4d5183dccaeab67768/chardev/char-stdio.c#L52) to restore stdin to blocking mode, it misses that stdout also gets O_NONBLOCK by [qemu_chr_open_fd](https://gitlab.com/qemu-project/qemu/-/blob/1a2d52c7fcaeaaf4f2fe8d4d5183dccaeab67768/chardev/char-stdio.c#L116) ([here](https://gitlab.com/qemu-project/qemu/-/blob/1a2d52c7fcaeaaf4f2fe8d4d5183dccaeab67768/chardev/char-fd.c#L215)). It causes the next applications in the script misbehave because they get unexpected EAGAIN on write to stdout. +Steps to reproduce: +Run the following script: + +``` +#!/usr/bin/env bash + +qemu-system-x86_64 -nodefaults -display none -no-reboot -serial stdio & +PID="$!" +sleep 5 +kill "$PID" +wait "$PID" +echo "EXITING $?" + +sleep 5 +seq 1 400000 +``` + +The seq command will be interrupted prematurely: + +``` +... +5143 +5144 +5145⏎ wResource temporarily unavailable +write: Resource temporarily unavailable +write: Resource temporarily unavailable +``` + +When run from fish shell, it will also start misbehaving when running next commands (fish bug report: https://github.com/fish-shell/fish-shell/issues/10600). +Additional information: +Expect a patch from me soon. |