WARNING: CPU: 0 PID: 15438 at kernel/kthread.c:399 __kthread_bind_mask+0x3b/0xc0 kernel/kthread.c:399 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 15438 Comm: syz-executor.5 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:ffff8880497a7958 EFLAGS: 00010293 RAX: ffff88809ee10300 RBX: ffff88804bca0180 RCX: ffffffff814c09d1 RDX: 0000000000000000 RSI: ffffffff814c09db RDI: 0000000000000007 RBP: ffff8880497a7978 R08: ffff88809ee10300 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff87691650 R14: ffff88804bca01a0 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 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x90a/0x2fa0 kernel/exit.c:876 do_group_exit+0x135/0x370 kernel/exit.c:980 get_signal+0x399/0x1d50 kernel/signal.c:2578 do_signal+0x87/0x1900 arch/x86/kernel/signal.c:818 exit_to_usermode_loop+0x244/0x2c0 arch/x86/entry/common.c:163 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: 0033:0x458c29 Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f31b68bbcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 000000000073bf08 RCX: 0000000000458c29 RDX: 00000000004cb4e0 RSI: 0000000000000081 RDI: 000000000073bf0c RBP: 000000000073bf00 R08: 0000000000000058 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000073bf0c R13: 00007ffe1c3492df R14: 00007f31b68bc9c0 R15: 000000000073bf0c Kernel Offset: disabled Rebooting in 86400 seconds..