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BUG: KMSAN: uninit-value in cond_local_irq_enable arch/x86/kernel/traps.c:80 [inline]
BUG: KMSAN: uninit-value in math_error+0x39e/0x700 arch/x86/kernel/traps.c:841
CPU: 1 PID: 11706 Comm: syz-executor7 Not tainted 4.18.0-rc4+ #23
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+0x185/0x1e0 lib/dump_stack.c:113
 kmsan_report+0x195/0x2c0 mm/kmsan/kmsan.c:990
 __msan_warning_32+0x7d/0xe0 mm/kmsan/kmsan_instr.c:640
 cond_local_irq_enable arch/x86/kernel/traps.c:80 [inline]
 math_error+0x39e/0x700 arch/x86/kernel/traps.c:841
 do_coprocessor_error+0x29/0x30 arch/x86/kernel/traps.c:880
 coprocessor_error+0x14/0x20 arch/x86/entry/entry_64.S:1006
RIP: 0010:fpu__drop+0xe2/0x530 arch/x86/kernel/fpu/core.c:345
Code: 01 00 00 41 8a 1f 4c 89 ff e8 1a 75 b6 00 8a 00 84 c0 74 0a f6 d0 20 d8 0f 84 c8 01 00 00 84 db 0f 84 cf 01 00 00 4c 89 75 b8 <9b> 65 48 c7 04 25 58 fc 02 00 00 00 00 00 8b 1c 25 b8 a9 43 8b 48 
RSP: 0000:ffff8801178bfc78 EFLAGS: 00010202
RAX: ffff8801aee57200 RBX: ffff8801aee77201 RCX: ffff8801aec87284
RDX: ffff8801aec87284 RSI: aaaaaaaaaaaab000 RDI: ffffea000a196ca0
RBP: ffff8801178bfcd0 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801aee76180 R14: ffff8801aee77280 R15: ffff8801aee77284
 fpu__clear+0x63/0x340 arch/x86/kernel/fpu/core.c:388
 handle_signal arch/x86/kernel/signal.c:767 [inline]
 do_signal+0x1a46/0x2060 arch/x86/kernel/signal.c:818
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x297/0x430 arch/x86/entry/common.c:197
 retint_user+0x8/0x8
RIP: 0033:0x4023d0
Code: 24 2c 48 89 5c 24 18 e9 ee fe ff ff 66 0f 1f 44 00 00 64 f0 83 2c 25 d0 ff ff ff 01 31 c9 31 d2 eb b2 e8 e3 73 05 00 0f 1f 00 <53> 48 8b 76 10 89 fb 64 8b 04 25 d0 ff ff ff 85 c0 74 3d 48 8d 86 
RSP: 002b:0000000000a3e378 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000a3e380 RSI: 0000000000a3e4b0 RDI: 000000000000000b
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000a3e930 R11: 0000000000000246 R12: 0000000000041404
R13: 0000000000000002 R14: 000000000072bea0 R15: 0000000000000001

Local variable description: ----key2.i126@do_futex
Variable was created at:
 do_futex+0x1d9/0x6c80 kernel/futex.c:3499
 __do_sys_futex kernel/futex.c:3587 [inline]
 __se_sys_futex+0x626/0x800 kernel/futex.c:3555
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