Skip to contentSkip to conversation

Kernel (2.4.0) lock-up in "write" (using PTS).

DISCUSSION Alvaro Lopes 2 participants 2 messages Jan 11, 2001

lore
Share & tools
lore
#0 lore raw

Hi all

This is somewhat odd, but I seemed to have found some kind of bug in 2.4.0. I tested the same program in 2.2.17 and it run perfectly.

So, here goes the description:

2.4.0 Kernel hangs up when I do the following stuff:

* Create a new PTY using openpty();
* Fork using forkpty. Now, the child process does this:
- Set the fd 0 line discipline to PPP;
- tries infinitely to read the standard input.

The parent process sets the line discipline of the master PTY fd to PPP
also, and then writes to it.

When I say it hangs up I really mean it. Not even the SYSRQ works.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/

#1 lore raw
Quoted 10 lines

2.4.0 Kernel hangs up when I do the following stuff:

* Create a new PTY using openpty();
* Fork using forkpty. Now, the child process does this:
- Set the fd 0 line discipline to PPP;
- tries infinitely to read the standard input.

The parent process sets the line discipline of the master PTY fd to PPP
also, and then writes to it.
When I say it hangs up I really mean it. Not even the SYSRQ works.

Does this still happen on -ac ?

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
Please read the FAQ at http://www.tux.org/lkml/