audit_printk_skb: 3 callbacks suppressed
audit: type=1400 audit(1517298894.867:47): avc:  denied  { read } for  pid=9537 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
==================================================================
BUG: KASAN: stack-out-of-bounds in get_frame_pointer arch/x86/include/asm/stacktrace.h:64 [inline]
BUG: KASAN: stack-out-of-bounds in __unwind_start+0x3a7/0x3c0 arch/x86/kernel/unwind_frame.c:76
Read of size 8 at addr ffff8801c9887238 by task syz-executor1/9558

CPU: 1 PID: 9558 Comm: syz-executor1 Not tainted 4.9.78-g7be1985 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c989f888 ffffffff81d94409 ffffea00072621c0 ffff8801c9887238
 0000000000000000 ffff8801c9887238 ffff8801c989f9b8 ffff8801c989f8c0
 ffffffff8153dc73 ffff8801c9887238 0000000000000008 0000000000000000
Call Trace:
 [<ffffffff81d94409>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94409>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153dc73>] print_address_description+0x73/0x280 mm/kasan/report.c:252
 [<ffffffff8153e195>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff8153e195>] kasan_report+0x275/0x360 mm/kasan/report.c:408
 [<ffffffff8153e2f4>] __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
 [<ffffffff816c5086>] proc_pid_stack+0x146/0x230 fs/proc/base.c:466
 [<ffffffff816c6858>] proc_single_show+0xf8/0x170 fs/proc/base.c:768
 [<ffffffff815e898f>] seq_read+0x32f/0x1290 fs/seq_file.c:240
 [<ffffffff8156bac3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156f85e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81573589>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81573589>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838b4534>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127

The buggy address belongs to the page:
page:ffffea00072621c0 count:0 mapcount:0 mapping:          (null) index:0x1
flags: 0x8000000000000000()
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c9887100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801c9887180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8801c9887200: 00 00 00 00 00 f1 f1 f1 f1 04 f2 f2 f2 f2 f2 f2
                                        ^
 ffff8801c9887280: f2 00 00 00 00 00 04 f2 f2 00 00 00 00 00 00 00
 ffff8801c9887300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 9558 Comm: syz-executor1 Tainted: G    B           4.9.78-g7be1985 #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c989f7e0 ffffffff81d94409 ffffffff841971bf ffff8801c989f8b8
 0000000000000000 ffff8801c9887238 ffff8801c989f9b8 ffff8801c989f8a8
 ffffffff8142f4a1 0000000041b58ab3 ffffffff8418ac30 ffffffff8142f2e5
Call Trace:
 [<ffffffff81d94409>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94409>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8142f4a1>] panic+0x1bc/0x3a8 kernel/panic.c:179
 [<ffffffff8153dbe0>] kasan_end_report+0x50/0x50 mm/kasan/report.c:176
 [<ffffffff8153e087>] kasan_report_error mm/kasan/report.c:356 [inline]
 [<ffffffff8153e087>] kasan_report+0x167/0x360 mm/kasan/report.c:408
 [<ffffffff8153e2f4>] __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
 [<ffffffff816c5086>] proc_pid_stack+0x146/0x230 fs/proc/base.c:466
 [<ffffffff816c6858>] proc_single_show+0xf8/0x170 fs/proc/base.c:768
 [<ffffffff815e898f>] seq_read+0x32f/0x1290 fs/seq_file.c:240
 [<ffffffff8156bac3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156f85e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81573589>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81573589>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838b4534>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..