| Summary: | gnome-terminal freezes whole gnome session while sending special characters to stdout | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Ingvar Hagelund <ingvar> |
| Component: | gnome-terminal | Assignee: | Matthias Clasen <mclasen> |
| Status: | CLOSED EOL | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 25 | CC: | debarshir, egmont, mclasen |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-12-12 10:24:36 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
This message is a reminder that Fedora 24 is nearing its end of life. Approximately 2 (two) weeks from now Fedora will stop maintaining and issuing updates for Fedora 24. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '24'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 24 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Reproduced in fedora 25, gnome-terminal-3.22.1-5.fc25.x86_64 and gnome-session-3.22.3-1.fc25.x86_64. Ingvar I might add that there exist more or less broken tools out there that produces these kind of special characters, making a session freeze, like (non-free) server raid tools. This is how I discovered this (though I can't remember which tool it was). Ingvar If anyone is interested, I found the actual tool that trigged this. It was hpasmcli in older versions. Trigged like this: # echo -e "show fans\nexit\n" | hpasmcli Older versions (like hp-health-10.00-1688.34) would produce streams of character 0x707, practically hanging gnome-session. This is fixed in later versions (at least hp-health-10.60-1833.33, and perhaps earlier). While this trigger is fixed, the general problem still exists. A stream of special characters, like 0x707, sent to gnome-terminal, will make gnome-session freeze. Ingvar This message is a reminder that Fedora 25 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 25. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '25'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 25 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. Filed VTE feature request for rate limiting: https://bugzilla.gnome.org/show_bug.cgi?id=790815. I think this actually is a variant of bz #1466654. I am not longer able to reproduce this on fedora 26. Ingvar Fedora 25 changed to end-of-life (EOL) status on 2017-12-12. Fedora 25 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. |
Description of problem: Sending special characters to stdout in gnome-terminal makes whole gnome session freeze Version-Release number of selected component (if applicable): gnome-session-3.20.2-1.fc24.x86_64 How reproducible: Always Steps to Reproduce: 1. Generate for instance 2,000,000 characters of type 0707, and send them to stdout. This may be done like this: $ cat <<EOF > gen_char.c #include <stdio.h> int main() { for ( int i=0; i<2000000; i++ ) { printf("%c", 0x707); } return 0; } EOF $ cc -o gen_char gen_char.c $ ./gen_char | hexdump 0000000 0707 0707 0707 0707 0707 0707 0707 0707 * 01e8480 2. Run the program in gnome-terminal under a normal gnome3 session $ ./gen_char 3. Watch the gnome session freeze for something like 10-30s, depending on the speed of your computer Actual results: gnome3 session freezes while sending special characters to stdout in gnome-terminal Expected results: Normal behaviour. Compare with doing the same in xterm Additional info: The system as such is not affected. It is only the gnome session that freezes temporarily.