SELinux: unrecognized netlink message: protocol=0 nlmsg_type=21102 sclass=netlink_route_socket pig=16556 comm=syz-executor0
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=56 sclass=netlink_route_socket pig=16577 comm=syz-executor3
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=56 sclass=netlink_route_socket pig=16578 comm=syz-executor3
==================================================================
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 ffff8801c459f8e8 by task syz-executor5/16576

CPU: 0 PID: 16576 Comm: syz-executor5 Not tainted 4.9.108-gb7d377b #50
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff880195d377c8 ffffffff81eb3e29 ffffea00071167c0 ffff8801c459f8e8
 0000000000000000 ffff8801c459f8f0 ffff8801c5124c80 ffff880195d37800
 ffffffff81567a89 ffff8801c459f8e8 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81eb3e29>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb3e29>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81567a89>] print_address_description+0x6c/0x234 mm/kasan/report.c:256
 [<ffffffff81567e93>] kasan_report_error mm/kasan/report.c:355 [inline]
 [<ffffffff81567e93>] kasan_report.cold.6+0x242/0x2fe mm/kasan/report.c:412
 [<ffffffff8153bae4>] __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
 [<ffffffff8107b9ed>] __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:43
 [<ffffffff8107bab8>] save_stack_trace_tsk+0x48/0x70 arch/x86/kernel/stacktrace.c:71
 [<ffffffff816d7c28>] proc_pid_stack+0x148/0x220 fs/proc/base.c:469
 [<ffffffff816d931d>] proc_single_show+0xfd/0x170 fs/proc/base.c:771
 [<ffffffff815ed2b6>] seq_read+0x4b6/0x12e0 fs/seq_file.c:240
 [<ffffffff8156f315>] do_loop_readv_writev.part.18+0xd5/0x280 fs/read_write.c:718
 [<ffffffff81573265>] do_loop_readv_writev fs/read_write.c:707 [inline]
 [<ffffffff81573265>] do_readv_writev+0x565/0x7a0 fs/read_write.c:873
 [<ffffffff81573524>] vfs_readv+0x84/0xc0 fs/read_write.c:897
 [<ffffffff81573957>] do_preadv+0x197/0x240 fs/read_write.c:974
 [<ffffffff81576f10>] SYSC_preadv fs/read_write.c:1024 [inline]
 [<ffffffff81576f10>] SyS_preadv+0x30/0x40 fs/read_write.c:1019
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f99d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

The buggy address belongs to the page:
page:ffffea00071167c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c459f780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801c459f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801c459f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                             ^
 ffff8801c459f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801c459f980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================