WARNING: CPU: 3 PID: 3257 at arch/x86/kernel/traps.c:788 cond_local_irq_disable arch/x86/kernel/traps.c:97 [inline]
WARNING: CPU: 3 PID: 3257 at arch/x86/kernel/traps.c:788 do_debug+0x4d8/0x6e0 arch/x86/kernel/traps.c:802
Kernel panic - not syncing: panic_on_warn set ...

CPU: 3 PID: 3257 Comm: syz-executor3 Not tainted 4.13.0-rc4-next-20170811 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 <#DB>
 __dump_stack lib/dump_stack.c:16 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:52
 panic+0x1e4/0x417 kernel/panic.c:180
 __warn+0x1c4/0x1d9 kernel/panic.c:541
 report_bug+0x211/0x2d0 lib/bug.c:183
 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:190
 do_trap_no_signal arch/x86/kernel/traps.c:224 [inline]
 do_trap+0x260/0x390 arch/x86/kernel/traps.c:273
 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:310
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:323
 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:930
RIP: 0010:cond_local_irq_disable arch/x86/kernel/traps.c:97 [inline]
RIP: 0010:do_debug+0x4d8/0x6e0 arch/x86/kernel/traps.c:802
RSP: 0018:ffff88006df0fe98 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88006df0ff58 RCX: 1ffff1000dbe1f9d
RDX: 1ffff1000dbe1ffc RSI: 0000000000000001 RDI: ffffffff85ac6ad8
RBP: ffff88006df0ff48 R08: ffff88006df0ffe8 R09: 1ffff1000dbe1f99
R10: ffff88006df0fc90 R11: ffffffff85b34bc0 R12: 000000000000e001
R13: ffff880068b862c0 R14: 1ffff1000dbe1fd8 R15: 0000000000004000
 debug+0x3a/0x70 arch/x86/entry/entry_64.S:1083
RIP: 0010:copy_user_generic_string+0x2c/0x40 arch/x86/lib/copy_user_64.S:143
RSP: 0018:ffff88006d167e68 EFLAGS: 00010246
RAX: ffffed000da2cfe1 RBX: 0000000020000000 RCX: 0000000000000007
RDX: 0000000000000000 RSI: 0000000020000008 RDI: ffff88006d167ed0
RBP: ffff88006d167e98 R08: ffffed000da2cfe1 R09: ffffed000da2cfe1
R10: 0000000000000008 R11: ffffed000da2cfe0 R12: 0000000000000040
R13: ffff88006d167ec8 R14: 00007ffffffff000 R15: 0000000020000040
 </#DB>
 copy_from_user include/linux/uaccess.h:146 [inline]
 SYSC_timer_create kernel/time/posix-timers.c:579 [inline]
 SyS_timer_create+0x89/0x120 kernel/time/posix-timers.c:572
 entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x446739
RSP: 002b:00007fce16ec0c08 EFLAGS: 00000286 ORIG_RAX: 00000000000000de
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000446739
RDX: 0000000020000ffc RSI: 0000000020000000 RDI: 0000000000000000
RBP: 0000000000708000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000286 R12: 00000000ffffffff
R13: 0000000000005560 R14: 00000000006e7620 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..