WARNING: CPU: 1 PID: 9265 at kernel/kthread.c:399 __kthread_bind_mask+0x3b/0xc0 kernel/kthread.c:399 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9265 Comm: syz-executor.3 Not tainted 5.1.0-rc5-next-20190418 #28 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+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x72b kernel/panic.c:214 __warn.cold+0x20/0x46 kernel/panic.c:576 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:972 RIP: 0010:__kthread_bind_mask+0x3b/0xc0 kernel/kthread.c:399 Code: 48 89 fb e8 d7 bc 24 00 4c 89 e6 48 89 df e8 ac e0 02 00 31 ff 49 89 c4 48 89 c6 e8 5f be 24 00 4d 85 e4 75 15 e8 b5 bc 24 00 <0f> 0b e8 ae bc 24 00 5b 41 5c 41 5d 41 5e 5d c3 e8 a0 bc 24 00 4c RSP: 0018:ffff888056b4fd10 EFLAGS: 00010293 RAX: ffff888056b5c540 RBX: ffff88805829a680 RCX: ffffffff814c09d1 RDX: 0000000000000000 RSI: ffffffff814c09db RDI: 0000000000000007 RBP: ffff888056b4fd30 R08: ffff888056b5c540 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff87691650 R14: ffff88805829a6a0 R15: ffffffff81c92ca0 __kthread_bind kernel/kthread.c:412 [inline] kthread_unpark+0x123/0x160 kernel/kthread.c:480 kthread_stop+0xfa/0x6c0 kernel/kthread.c:556 io_sq_thread_stop fs/io_uring.c:2057 [inline] io_sq_thread_stop fs/io_uring.c:2052 [inline] io_finish_async+0xab/0x180 fs/io_uring.c:2064 io_ring_ctx_free fs/io_uring.c:2538 [inline] io_ring_ctx_wait_and_kill+0x133/0x510 fs/io_uring.c:2595 io_uring_release+0x42/0x50 fs/io_uring.c:2603 __fput+0x2e5/0x8d0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x14a/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:276 [inline] do_syscall_64+0x57e/0x670 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4129e1 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 1a 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffdd8e9c470 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00000000004129e1 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 000000000073c900 R08: 0000000057ddb0a5 R09: 0000000057ddb0a9 R10: 00007ffdd8e9c540 R11: 0000000000000293 R12: 0000000000000001 R13: 000000000073c900 R14: 0000000000044aae R15: 000000000073bf0c Kernel Offset: disabled Rebooting in 86400 seconds..