1 files changed, 42 insertions, 0 deletions

diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/2423.toml b/gitlab/issues/target_missing/host_missing/accel_missing/2423.toml
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index 000000000..9c5f24179
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+++ b/gitlab/issues/target_missing/host_missing/accel_missing/2423.toml
@@ -0,0 +1,42 @@
+id = 2423
+title = "`qemu -serial stdio` leaves stdout in non-blocking mode"
+state = "closed"
+created_at = "2024-07-03T17:46:16.532Z"
+closed_at = "2024-07-04T18:14:29.508Z"
+labels = []
+url = "https://gitlab.com/qemu-project/qemu/-/issues/2423"
+host-os = "Arch Linux"
+host-arch = "x86_64"
+qemu-version = "9.0.1"
+guest-os = "n/a"
+guest-arch = "n/a"
+description = """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."""
+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 = """Expect a patch from me soon."""