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Message-ID: <20121206201326.GA10874@kroah.com> Date: Thu, 6 Dec 2012 12:13:26 -0800 From: Greg KH <greg@...ah.com> To: Steven Rostedt <rostedt@...dmis.org> Cc: linux-kernel@...r.kernel.org, stable <stable@...r.kernel.org>, Ingo Molnar <mingo@...nel.org>, Andrew Morton <akpm@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, Frederic Weisbecker <fweisbec@...il.com> Subject: Re: [v3.0 stable version][PATCH 1/2] ring-buffer: Fix NULL pointer if rb_set_head_page() fails On Fri, Nov 30, 2012 at 11:16:43AM -0500, Steven Rostedt wrote: > The function rb_set_head_page() searches the list of ring buffer > pages for a the page that has the HEAD page flag set. If it does > not find it, it will do a WARN_ON(), disable the ring buffer and > return NULL, as this should never happen. > > But if this bug happens to happen, not all callers of this function > can handle a NULL pointer being returned from it. That needs to be > fixed. > > Cc: stable@...r.kernel.org # 3.0+ > Signed-off-by: Steven Rostedt <rostedt@...dmis.org> > --- > kernel/trace/ring_buffer.c | 9 +++++++-- > 1 files changed, 7 insertions(+), 2 deletions(-) I don't understand why you sent these to stable@ right now, I don't see them in Linus's tree, so why are they needed here? Care to resend them when they hit Linus's tree? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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