FAULT_INJECTION: forcing a failure.
name fail_futex, interval 1, probability 0, space 0, times 1
CPU: 1 PID: 10678 Comm: syz-executor2 Not tainted 4.17.0+ #9
------------[ cut here ]------------
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
WARNING: CPU: 0 PID: 10684 at mm/kmsan/kmsan.c:1363 kmsan_get_shadow_address+0xa3/0x1f0 mm/kmsan/kmsan.c:1363
Call Trace:
Kernel panic - not syncing: panic_on_warn set ...

 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x87b/0xab0 lib/fault-inject.c:149
 should_fail_futex kernel/futex.c:306 [inline]
 get_futex_key+0x355/0x1ce0 kernel/futex.c:519
 futex_wake+0x189/0xba0 kernel/futex.c:1526
 do_futex+0xaa8/0x6c20 kernel/futex.c:3531
 mm_release+0x297/0x600 kernel/fork.c:1203
 exit_mm+0xcb/0x7a0 kernel/exit.c:500
 do_exit+0xc12/0x3930 kernel/exit.c:854
 do_group_exit+0x1a0/0x360 kernel/exit.c:970
 get_signal+0x1405/0x1ec0 kernel/signal.c:2482
 do_signal+0xb8/0x1d20 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196
 syscall_return_slowpath+0xe9/0x710 arch/x86/entry/common.c:265
 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455b29
RSP: 002b:00007fab43062c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
RAX: fffffffffffffff0 RBX: 00007fab430636d4 RCX: 0000000000455b29
RDX: 0000000000000008 RSI: 0000000000000409 RDI: 0000000000000013
RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 00000000004bbba4 R14: 00000000004c8ac8 R15: 0000000000000000
CPU: 0 PID: 10684 Comm: syz-executor0 Not tainted 4.17.0+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 panic+0x3d0/0x990 kernel/panic.c:184
 __warn+0x40f/0x580 kernel/panic.c:536
 report_bug+0x72a/0x880 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x1c1/0x620 arch/x86/kernel/traps.c:298
 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:317
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:995
RIP: 0010:kmsan_get_shadow_address+0xa3/0x1f0 mm/kmsan/kmsan.c:1363
RSP: 0018:ffff8801b3c9f948 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffc9000188f000 RSI: 0000000000032bc2 RDI: 0000000000032bc3
RBP: ffff8801b3c9f960 R08: 000000249e0bc837 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000246
R13: 000000000000800e R14: 0000000000000001 R15: 000000000000800e
 kmsan_internal_check_memory+0x81/0x1f0 mm/kmsan/kmsan.c:1210
 kmsan_copy_to_user+0x7a/0x160 mm/kmsan/kmsan.c:1261
 copy_to_user include/linux/uaccess.h:184 [inline]
 semctl_main+0x12e0/0x58b0 ipc/sem.c:1434
 ksys_semctl+0x4d5/0x640 ipc/sem.c:1647
 __do_sys_semctl ipc/sem.c:1671 [inline]
 __se_sys_semctl ipc/sem.c:1669 [inline]
 __x64_sys_semctl+0x11e/0x170 ipc/sem.c:1669
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455b29
RSP: 002b:00007f21956d9c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000042
RAX: ffffffffffffffda RBX: 00007f21956da6d4 RCX: 0000000000455b29
RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020006640 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000004c09e3 R14: 00000000004d05c8 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..