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Date: Sun, 26 Jun 2016 23:29:57 -0400
From: Valdis Kletnieks <>
Subject: Usercopy caught another one - ping IPv6...

usercopy kills attempts to use ping....

(Kernel tainted by a probably unrelated MMC issue)

[135768.173443] usercopy: kernel memory overwrite attempt detected to ffff8800be26fd90 (RAWv6) (32 bytes)
[135768.173451] CPU: 3 PID: 56577 Comm: ping Tainted: G      D    OE   4.7.0-rc3-next-20160614-dirty #302
[135768.173453] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A17 08/19/2015
[135768.173455]  0000000000000000 000000004951b1ca ffff880223687e10 ffffffffb169f61a
[135768.173459]  ffff8800be26fd90 000000004951b1ca 0000000000000020 0000000000000000
[135768.173463]  ffff880223687e60 ffffffffb1367b30 0000000000000001 ffffea0002998868
[135768.173467] Call Trace:
[135768.173473]  [<ffffffffb169f61a>] dump_stack+0x7b/0xd1
[135768.173476]  [<ffffffffb1367b30>] __check_object_size+0x70/0x3d4
[135768.173479]  [<ffffffffb1ded6bb>] compat_rawv6_setsockopt.part.11+0x4b/0x80
[135768.173482]  [<ffffffffb1ded824>] rawv6_setsockopt+0x84/0xb0
[135768.173485]  [<ffffffffb15c66c5>] ? selinux_socket_setsockopt+0x45/0x60
[135768.173488]  [<ffffffffb1bd1d0a>] sock_common_setsockopt+0x3a/0xc0
[135768.173490]  [<ffffffffb1bcfb99>] SyS_setsockopt+0x89/0x120
[135768.173493]  [<ffffffffb20896e5>] entry_SYSCALL_64_fastpath+0x18/0xa8
[135768.173497]  [<ffffffffb1143e3f>] ? trace_hardirqs_off_caller+0x1f/0xf0

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