** Changed in: gnome-terminal
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1201489
Title:
gnome-terminal hangs after executing tail -f for some time with plenty
of output
Status in GNOME Terminal:
Expired
Status in “gnome-terminal” package in Ubuntu:
New
Bug description:
Steps to reproduce:
1) Open gnome-terminal with bash shell.
2) type tail -f someLogFile
3) Let it run with plenty of output for a long time.
Result:
Tail output will suddenly stop.
Stracing the bash process shows:
mm@musca:~ $ sudo strace -p 31412
[sudo] password for mm:
Process 31412 attached - interrupt to quit
wait4(-1,
Stracing the tail process shows:
sudo strace -p 17298
[sudo] password for mm:
Process 17298 attached - interrupt to quit
write(1, "ull;null;null;null;0;null;eurex;"..., 4515^C <unfinished ...>
Process 17298 detached
It seems that the processes are somehow deadlocked.
After killing the tail process, the tail died, but the gnome-terminal stayed
unusable.
mm@musca:~ $ sudo strace -p 31412
[sudo] password for mm:
Process 31412 attached - interrupt to quit
wait4(-1, [{WIFSIGNALED(s) && WTERMSIG(s) == SIGTERM}], WSTOPPED|WCONTINUED,
NULL) = 17298
rt_sigprocmask(SIG_BLOCK, [CHLD TSTP TTIN TTOU], [CHLD], 8) = 0
ioctl(255, TIOCSPGRP, [31412]) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
ioctl(255, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo
...}) = 0
ioctl(255, SNDCTL_TMR_STOP or TCSETSW, {B38400 opost isig icanon echo ...}) = 0
ioctl(255, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo
...}) = 0
ioctl(255, TIOCGWINSZ, {ws_row=63, ws_col=211, ws_xpixel=0, ws_ypixel=0}) = 0
write(2, "Terminated\n", 11
Choosing "Terminal->Reset" from gnome-terminal menu did not help.
Choosing "Terminal->Reset And Clear" from gnome-terminal menu made
the window usable again..
Probably there is a problem with a buffer overflow, etc.
I am using a scrollback of 1000000 lines.
The output should have been sufficient to fill this buffer.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-terminal 3.4.1.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-48.74-generic 3.2.46
Uname: Linux 3.2.0-48-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.3
Architecture: amd64
Date: Mon Jul 15 18:05:39 2013
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64
(20120822.4)
MarkForUpload: True
SourcePackage: gnome-terminal
UpgradeStatus: No upgrade log present (probably fresh install)
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