IPVS: Creating netns size=2536 id=5
IPVS: Creating netns size=2536 id=6
IPVS: Creating netns size=2536 id=7
IPVS: Creating netns size=2536 id=8
==================================================================
BUG: KASAN: out-of-bounds in unwind_next_frame+0xcd/0xe0 arch/x86/kernel/unwind_frame.c:51
Read of size 8 at addr ffff8801ce01fdd0 by task syz-executor5/5970

CPU: 1 PID: 5970 Comm: syz-executor5 Not tainted 4.9.95-gee0bcd6 #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b5cbf7a8 ffffffff81eb0f89 ffffea00073807c0 ffff8801ce01fdd0
 0000000000000000 ffff8801ce01fdd8 ffff8801d758b3c0 ffff8801b5cbf7e0
 ffffffff815653cb ffff8801ce01fdd0 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81eb0f89>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb0f89>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff815653cb>] print_address_description+0x6c/0x234 mm/kasan/report.c:256
 [<ffffffff815657d5>] kasan_report_error mm/kasan/report.c:355 [inline]
 [<ffffffff815657d5>] kasan_report.cold.6+0x242/0x2fe mm/kasan/report.c:412
 [<ffffffff81539454>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 [<ffffffff810d0e5d>] unwind_next_frame+0xcd/0xe0 arch/x86/kernel/unwind_frame.c:51
 [<ffffffff8107adcd>] __save_stack_trace+0x7d/0xf0 arch/x86/kernel/stacktrace.c:42
 [<ffffffff8107aea8>] save_stack_trace_tsk+0x48/0x70 arch/x86/kernel/stacktrace.c:71
 [<ffffffff816d53a8>] proc_pid_stack+0x148/0x220 fs/proc/base.c:467
 [<ffffffff816d684d>] proc_single_show+0xfd/0x170 fs/proc/base.c:769
 [<ffffffff815ea9d6>] seq_read+0x4b6/0x12e0 fs/seq_file.c:240
 [<ffffffff8156cc55>] do_loop_readv_writev.part.18+0xd5/0x280 fs/read_write.c:718
 [<ffffffff81571e07>] do_loop_readv_writev fs/read_write.c:707 [inline]
 [<ffffffff81571e07>] compat_do_readv_writev+0x567/0x7a0 fs/read_write.c:1091
 [<ffffffff81572122>] compat_readv+0xe2/0x150 fs/read_write.c:1120
 [<ffffffff81572282>] do_compat_readv+0xf2/0x1d0 fs/read_write.c:1140
 [<ffffffff815749c6>] C_SYSC_readv fs/read_write.c:1152 [inline]
 [<ffffffff815749c6>] compat_SyS_readv+0x26/0x30 fs/read_write.c:1148
 [<ffffffff81006da7>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81006da7>] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387
 [<ffffffff839f3a10>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137

The buggy address belongs to the page:
page:ffffea00073807c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801ce01fc80: 00 f2 f2 f2 f3 f3 f3 f3 00 00 00 00 00 00 00 00
 ffff8801ce01fd00: 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00 00
>ffff8801ce01fd80: 00 00 00 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00
                                                    ^
 ffff8801ce01fe00: 00 00 00 f1 f1 f1 f1 00 00 f2 f2 f2 f2 f2 f2 00
 ffff8801ce01fe80: 00 f2 f2 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================