[PATCH 0/1] ptrace/x86: fix the TIF_FORCED_TF logic in handle_signal()

[Oleg Nesterov]

Hello,

This is the very old bug initially reported by Evan in 2010, see
https://bugzilla.kernel.org/show_bug.cgi?id=16061
Somehow we forgot to fix it and now Pedro reports it again.

>From the changelog:

    Note: in the longer term we should probably change setup_sigcontext()
    to use get_flags() and then just remove this user_disable_single_step().

Yes, but this needs more changes. Lets start with more simple and
backportable fix. Also because I think that enable_single_step() and
the whole TIF_SINGLESTEP/TIF_FORCED_TF logic need some cleanups, but
I am not sure what we can do.

Oleg.

 arch/x86/kernel/signal.c |   22 +++++++++++-----------
 1 files changed, 11 insertions(+), 11 deletions(-)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/