From: Daniel Jacobowitz <drow@false.org>
To: Bill Gatliff <bgat@billgatliff.com>
Cc: gdb@sourceware.org, linuxppc-embedded@ozlabs.org
Subject: Re: Gdbserver syscall clobber
Date: Mon, 16 Jul 2007 11:53:48 -0400 [thread overview]
Message-ID: <20070716155348.GA5281@caradoc.them.org> (raw)
In-Reply-To: <469B922D.3050701@billgatliff.com>
On Mon, Jul 16, 2007 at 10:43:41AM -0500, Bill Gatliff wrote:
> recv(4, 0x7ffffd60, 1, 0) = ? ERESTARTSYS (To be restarted)
> --- SIGIO (I/O possible) @ 0 (0) ---
> syscall_4294966784(0xa, 0x7ffffd34, 0x1, 0, 0x1008a3c7, 0x1008b5a3, 0x1008b5a4,
That's -512, a.k.a. the errno value used by syscall restarting. I'd
say your glibc does not obey the restartable syscall convention used
by your kernel, and when it tries to restart the syscall the errno
value is not being replaced by the syscall number. Check the assembly
for recv.
--
Daniel Jacobowitz
CodeSourcery
next prev parent reply other threads:[~2007-07-16 16:26 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-16 15:43 Gdbserver syscall clobber Bill Gatliff
2007-07-16 15:53 ` Daniel Jacobowitz [this message]
2007-07-18 17:42 ` Bill Gatliff
2007-07-18 17:59 ` Bill Gatliff
2007-07-18 18:31 ` Daniel Jacobowitz
2007-07-23 15:37 ` Bill Gatliff
2007-07-23 15:38 ` Bill Gatliff
2007-07-23 16:06 ` Bill Gatliff
2007-07-23 16:15 ` Daniel Jacobowitz
2007-07-26 16:28 ` Bill Gatliff
2007-07-23 16:19 ` Andreas Schwab
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