Steven Rostedt (Red Hat) 561237e441 ring-buffer: Check if buffer exists before polling ... commit 8b8b36834d upstream. The per_cpu buffers are created one per possible CPU. But these do not mean that those CPUs are online, nor do they even exist. With the addition of the ring buffer polling, it assumes that the caller polls on an existing buffer. But this is not the case if the user reads trace_pipe from a CPU that does not exist, and this causes the kernel to crash. Simple fix is to check the cpu against buffer bitmask against to see if the buffer was allocated or not and return -ENODEV if it is not. More updates were done to pass the -ENODEV back up to userspace. Link: http://lkml.kernel.org/r/5393DB61.6060707@oracle.com Reported-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-07-17 15:58:03 -07:00
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acpi	ACPI / hotplug: Fix conflicted PCI bridge notify handlers	2013-12-04 10:57:04 -08:00
asm-generic	mm: use paravirt friendly ops for NUMA hinting ptes	2014-05-30 21:52:12 -07:00
clocksource	clocksource: arch_timer: use virtual counters	2014-01-09 12:24:26 -08:00
crypto	crypto: scatterwalk - Use sg_chain_ptr on chain entries	2013-12-11 22:36:29 -08:00
drm	drm/radeon: 0x9649 is SUMO2 not SUMO	2014-01-09 12:24:22 -08:00
dt-bindings
keys
linux	ring-buffer: Check if buffer exists before polling	2014-07-17 15:58:03 -07:00
math-emu
media	media: v4l2: added missing mutex.h include to v4l2-ctrls.h	2013-09-26 17:18:26 -07:00
memory
misc
net	net: fix inet_getid() and ipv6_select_ident() bugs	2014-06-26 15:12:38 -04:00
pcmcia
ras
rdma
rxrpc
scsi	scsi: fix our current target reap infrastructure	2014-05-30 21:52:11 -07:00
sound	ALSA: control: Protect user controls against concurrent access	2014-06-26 15:12:43 -04:00
target	target: Report correct response length for some commands	2014-06-30 20:09:45 -07:00
trace	tracing: Fix syscall_*regfunc() vs copy_process() race	2014-07-06 18:54:16 -07:00
uapi	ALSA: compress: Cancel the optimization of compiler and fix the size of struct for all platform.	2014-06-26 15:12:41 -04:00
video	Merge branch 'fbdev-3.10-fixes' of git://gitorious.org/linux-omap-dss2/linux into linux-fbdev/for-3.10-fixes	2013-05-29 17:00:34 +08:00
xen	xenbus: delay xenbus frontend resume if xenstored is not running	2013-05-29 09:04:19 -04:00
Kbuild