WARNING: CPU: 0 PID: 7660 at kernel/futex.c:818 get_pi_state+0x15b/0x190 kernel/futex.c:818 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 7660 Comm: syz-executor6 Not tainted 4.14.0-rc2-mm1+ #11 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:52 panic+0x1e4/0x41c kernel/panic.c:181 __warn+0x1c4/0x1e0 kernel/panic.c:542 report_bug+0x211/0x2d0 lib/bug.c:183 fixup_bug+0x40/0x90 arch/x86/kernel/traps.c:178 do_trap_no_signal arch/x86/kernel/traps.c:212 [inline] do_trap+0x260/0x390 arch/x86/kernel/traps.c:261 do_error_trap+0x120/0x390 arch/x86/kernel/traps.c:298 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:311 invalid_op+0x18/0x20 arch/x86/entry/entry_64.S:905 RIP: 0010:get_pi_state+0x15b/0x190 kernel/futex.c:818 RSP: 0018:ffff8801c1c671a0 EFLAGS: 00010097 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffff1003838ce39 RDX: ffff8801c1c98580 RSI: 0000000000000003 RDI: ffff8801c201d680 RBP: ffff8801c1c67230 R08: ffff8801c1c99840 R09: 1ffff1003838ce1e R10: ffff8801c1c98580 R11: 0000000000000002 R12: 1ffff1003838ce35 R13: ffff8801c201d680 R14: 1ffff1003838ce39 R15: ffff8801c201d740 exit_pi_state_list+0x556/0x7a0 kernel/futex.c:932 mm_release+0x46d/0x590 kernel/fork.c:1191 exit_mm kernel/exit.c:499 [inline] do_exit+0x481/0x1b00 kernel/exit.c:852 do_group_exit+0x149/0x400 kernel/exit.c:968 get_signal+0x73f/0x16d0 kernel/signal.c:2334 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:808 exit_to_usermode_loop+0x214/0x310 arch/x86/entry/common.c:158 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath+0x42f/0x510 arch/x86/entry/common.c:266 entry_SYSCALL_64_fastpath+0xbc/0xbe RIP: 0033:0x4520a9 RSP: 002b:00007f7be2de4c08 EFLAGS: 00000216 ORIG_RAX: 00000000000000ca RAX: 0000000000000000 RBX: 00000000007180b0 RCX: 00000000004520a9 RDX: 0000000000000004 RSI: 000080000000000b RDI: 000000002000cffc RBP: 00000000000008f0 R08: 0000000020048000 R09: 0000000000000000 R10: 000000002000b000 R11: 0000000000000216 R12: 00000000004b77c8 R13: 00000000ffffffff R14: 000000002000cffc R15: 000080000000000b