Re: [uml-devel] Kernel panic: handle_trap - failed to wait at end of syscall, errno = 4, status = 1151

[Joe Marzot <gmarzot@nortelnetworks.com>]

would this be something simple like

do {
    err = waitpid(pid, &status, WUNTRACED);
} while ((err < 0) && (errno == EINTR));

strangely I am seeing this error also w/ host 2.4.20-24.8 + 
host-skas3a-2.4.25.patch and 2.4.22+uml_patch-2.4.24-1.

regards, GSM

Jeff Dike wrote:
> On Fri, Jun 18, 2004 at 07:19:57PM -0500, Christopher S. Aker wrote:
> 
>>Kernel panic: handle_trap - failed to wait at end of syscall, errno = 4, status =
>>1151
>>
>>        err = waitpid(pid, &status, WUNTRACED);
>>        if((err < 0) || !WIFSTOPPED(status) || (WSTOPSIG(status) != SIGTRAP))
>>                panic("handle_trap - failed to wait at end of syscall, "
>>                      "errno = %d, status = %d\n", errno, status);
> 
> 
> Easy diagnosis - errno 4 is EINTR, this wasn't checking for that and redoing
> the wait.
> 
> I've been adding EINTR safety in a bit at a time, just hadn't noticed this
> yet.
> 
> 				Jeff
> 
> 
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