SELinux: unrecognized netlink message: protocol=0 nlmsg_type=36883 sclass=netlink_route_socket pig=15639 comm=syz-executor1
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=36883 sclass=netlink_route_socket pig=15639 comm=syz-executor1
IPVS: Creating netns size=2536 id=32
IPVS: Creating netns size=2536 id=33
==================================================================
BUG: KASAN: out-of-bounds in unwind_get_return_address+0x98/0xb0 arch/x86/kernel/unwind_frame.c:17
Read of size 8 at addr ffff8801d845f8d0 by task syz-executor4/15678

CPU: 1 PID: 15678 Comm: syz-executor4 Not tainted 4.9.111-g03c70fe #58
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d3fbf198 ffffffff81eb2729 ffffea00076117c0 ffff8801d845f8d0
 0000000000000000 ffff8801d845f8d8 ffff8801bd1733c0 ffff8801d3fbf1d0
 ffffffff81567b59 ffff8801d845f8d0 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81eb2729>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb2729>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81567b59>] print_address_description+0x6c/0x234 mm/kasan/report.c:256
 [<ffffffff81567f63>] kasan_report_error mm/kasan/report.c:355 [inline]
 [<ffffffff81567f63>] kasan_report.cold.6+0x242/0x2fe mm/kasan/report.c:412
 [<ffffffff8153bbb4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 [<ffffffff810d2c08>] unwind_get_return_address+0x98/0xb0 arch/x86/kernel/unwind_frame.c:17
 [<ffffffff8107b9bd>] __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:43
 [<ffffffff8107ba88>] save_stack_trace_tsk+0x48/0x70 arch/x86/kernel/stacktrace.c:71
 [<ffffffff816d7c88>] proc_pid_stack+0x148/0x220 fs/proc/base.c:469
 [<ffffffff816d937d>] proc_single_show+0xfd/0x170 fs/proc/base.c:771
 [<ffffffff815ed386>] seq_read+0x4b6/0x12e0 fs/seq_file.c:240
 [<ffffffff8156f3e5>] do_loop_readv_writev.part.18+0xd5/0x280 fs/read_write.c:718
 [<ffffffff81573335>] do_loop_readv_writev fs/read_write.c:707 [inline]
 [<ffffffff81573335>] do_readv_writev+0x565/0x7a0 fs/read_write.c:873
 [<ffffffff815735f4>] vfs_readv+0x84/0xc0 fs/read_write.c:897
 [<ffffffff8161472b>] kernel_readv fs/splice.c:363 [inline]
 [<ffffffff8161472b>] default_file_splice_read+0x44b/0x7e0 fs/splice.c:435
 [<ffffffff8161382c>] do_splice_to+0x10c/0x170 fs/splice.c:899
 [<ffffffff81613acf>] splice_direct_to_actor+0x23f/0x7e0 fs/splice.c:971
 [<ffffffff81614213>] do_splice_direct+0x1a3/0x270 fs/splice.c:1080
 [<ffffffff81575600>] do_sendfile+0x4f0/0xc60 fs/read_write.c:1393
 [<ffffffff81577681>] SYSC_sendfile64 fs/read_write.c:1448 [inline]
 [<ffffffff81577681>] SyS_sendfile64+0xd1/0x160 fs/read_write.c:1440
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f8cd3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

The buggy address belongs to the page:
page:ffffea00076117c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801d845f780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801d845f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801d845f880: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
                                                    ^
 ffff8801d845f900: 00 f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00
 ffff8801d845f980: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 f2 f2 f2 f2
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