Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 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+0x355/0x1d00 kernel/futex.c:519
==================================================================
BUG: KMSAN: uninit-value in on_stack arch/x86/include/asm/stacktrace.h:44 [inline]
BUG: KMSAN: uninit-value in update_stack_state+0x4ec/0xa40 arch/x86/kernel/unwind_frame.c:238
CPU: 0 PID: 7127 Comm: syz-executor1 Not tainted 4.16.0+ #84
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x14a/0x1d0 lib/dump_stack.c:53
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
 on_stack arch/x86/include/asm/stacktrace.h:44 [inline]
 update_stack_state+0x4ec/0xa40 arch/x86/kernel/unwind_frame.c:238
 unwind_next_frame+0x618/0xe50 arch/x86/kernel/unwind_frame.c:329
 show_trace_log_lvl+0xb49/0x1030 arch/x86/kernel/dumpstack.c:212
 show_stack+0xfc/0x150 arch/x86/kernel/dumpstack.c:236
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 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+0x355/0x1d00 kernel/futex.c:519
 futex_requeue+0x477/0x4c20 kernel/futex.c:1904
 do_futex+0x6d2/0x6ad0 kernel/futex.c:3535
 SYSC_futex+0x3e1/0x810 kernel/futex.c:3587
 SyS_futex+0x89/0xb0 kernel/futex.c:3555
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455329
RSP: 002b:00007f57dbf7bc68 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f57dbf7c6d4 RCX: 0000000000455329
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 000000002000cffc
RBP: 000000000072bea0 R08: 0000000020e7fffc R09: 0000000000000000
R10: 0000000020fd8000 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000000000a2 R14: 00000000006f3fd0 R15: 0000000000000000

Local variable description: ----wq@lookup_slow
Variable was created at:
 lookup_slow+0x74/0x760 fs/namei.c:1607
 walk_component+0x2d6/0xb20 fs/namei.c:1763
==================================================================