IPVS: Creating netns size=2536 id=8
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BUG: KASAN: out-of-bounds in get_frame_pointer arch/x86/include/asm/stacktrace.h:64 [inline]
BUG: KASAN: out-of-bounds in __unwind_start+0x3a7/0x3c0 arch/x86/kernel/unwind_frame.c:76
Read of size 8 at addr ffff8801b607fc30 by task syz-executor3/9162

CPU: 1 PID: 9162 Comm: syz-executor3 Not tainted 4.9.80-g8a174b47 #31
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b50277e8 ffffffff81d94be9 ffffea0006d81fc0 ffff8801b607fc30
 0000000000000000 ffff8801b607fc38 ffff8801b5027918 ffff8801b5027820
 ffffffff8153e113 ffff8801b607fc30 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81d94be9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94be9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153e113>] print_address_description+0x73/0x280 mm/kasan/report.c:252
 [<ffffffff8153e635>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff8153e635>] kasan_report+0x275/0x360 mm/kasan/report.c:408
 [<ffffffff8153e794>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff810d5397>] get_frame_pointer arch/x86/include/asm/stacktrace.h:64 [inline]
 [<ffffffff810d5397>] __unwind_start+0x3a7/0x3c0 arch/x86/kernel/unwind_frame.c:76
 [<ffffffff8107c689>] unwind_start arch/x86/include/asm/unwind.h:39 [inline]
 [<ffffffff8107c689>] __save_stack_trace+0x59/0xf0 arch/x86/kernel/stacktrace.c:41
 [<ffffffff8107c788>] save_stack_trace_tsk+0x48/0x70 arch/x86/kernel/stacktrace.c:71
 [<ffffffff816c5826>] proc_pid_stack+0x146/0x230 fs/proc/base.c:466
 [<ffffffff816c6ff8>] proc_single_show+0xf8/0x170 fs/proc/base.c:768
 [<ffffffff815e912f>] seq_read+0x32f/0x1290 fs/seq_file.c:240
 [<ffffffff8156cca1>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff81570b10>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff81570b10>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff81570dc4>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff81570ee6>] do_readv+0xe6/0x250 fs/read_write.c:924
 [<ffffffff815743d7>] SYSC_readv fs/read_write.c:1011 [inline]
 [<ffffffff815743d7>] SyS_readv+0x27/0x30 fs/read_write.c:1008
 [<ffffffff838b34ee>] entry_SYSCALL_64_fastpath+0x29/0xe8

The buggy address belongs to the page:
page:ffffea0006d81fc0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801b607fb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801b607fb80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801b607fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                        ^
 ffff8801b607fc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801b607fd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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