Red Hat Bugzilla – Bug 135669
tcsendbreak fails in compat mode
Last modified: 2013-03-06 00:57:31 EST
Description of problem:
ioctl TCSBRKP is needed for POSIX tcsendbreak().
But arch/x86_64/ia32 doesn't support TCSBRKP.
So x86 application calling tcsendbreak() will fail on x86_64 with
Steps to Reproduce:
Run an x86 program calling tcsendbreak() in compat mode.
E.g. LTP case ptem01 uses tcsendbreak(), which calls ioctl(3,
The call failed.
The call should succeed.
I'll post the patch later.
The solution to add TCSBRKP in arch/x86_64/ia32/ia32_ioctl.c is
But better we need discuss with other compat archs to see if it's OK
to moving it to compat_ioctl.c.
Created attachment 106465 [details]
This patch fixes.
It's already sent to community, and will probably go into mainstream soon.
How about including this patch in RHEL4?
Gordon, has this patch been accepted upstream?
I just checked and found the answer is no. It looks like it is
dropped somehow. I'm pushing again.
This patch has been in mainline tree:
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.