Patch "samples/bpf: fix trace_output example" has been added to the 4.4-stable tree

Patch "samples/bpf: fix trace_output example" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    samples/bpf: fix trace_output example

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     samples-bpf-fix-trace_output-example.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From foo@baz Mon May 16 11:21:32 PDT 2016
From: Alexei Starovoitov <ast@fb.com>
Date: Wed, 27 Apr 2016 18:56:22 -0700
Subject: samples/bpf: fix trace_output example

From: Alexei Starovoitov <ast@fb.com>

[ Upstream commit 569cc39d39385a74b23145496bca2df5ac8b2fb8 ]

llvm cannot always recognize memset as builtin function and optimize
it away, so just delete it. It was a leftover from testing
of bpf_perf_event_output() with large data structures.

Fixes: 39111695b1b8 ("samples: bpf: add bpf_perf_event_output example")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 samples/bpf/trace_output_kern.c |    1 -
 1 file changed, 1 deletion(-)

--- a/samples/bpf/trace_output_kern.c
+++ b/samples/bpf/trace_output_kern.c
@@ -18,7 +18,6 @@ int bpf_prog1(struct pt_regs *ctx)
 		u64 cookie;
 	} data;
 
-	memset(&data, 0, sizeof(data));
 	data.pid = bpf_get_current_pid_tgid();
 	data.cookie = 0x12345678;
 


Patches currently in stable-queue which might be from ast@fb.com are

queue-4.4/samples-bpf-fix-trace_output-example.patch
queue-4.4/bpf-fix-refcnt-overflow.patch
queue-4.4/bpf-verifier-reject-invalid-ld_abs-bpf_dw-instruction.patch
queue-4.4/bpf-fix-check_map_func_compatibility-logic.patch