Warning: Permanently added '10.128.0.234' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.019092] WARNING: CPU: 0 PID: 7580 at kernel/workqueue.c:3020 __flush_work+0x74c/0x8a0 [ 45.027498] Kernel panic - not syncing: panic_on_warn set ... [ 45.033368] CPU: 0 PID: 7580 Comm: syz-executor181 Not tainted 5.0.0+ #11 [ 45.040273] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.049674] Call Trace: [ 45.052252] dump_stack+0x172/0x1f0 [ 45.055864] ? __flush_work+0x6d0/0x8a0 [ 45.059825] panic+0x2cb/0x65c [ 45.063006] ? __warn_printk+0xf3/0xf3 [ 45.066906] ? __flush_work+0x74c/0x8a0 [ 45.070862] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.076382] ? __warn.cold+0x5/0x45 [ 45.079991] ? __warn+0xe8/0x1d0 [ 45.083356] ? __flush_work+0x74c/0x8a0 [ 45.087316] __warn.cold+0x20/0x45 [ 45.090840] ? __flush_work+0x74c/0x8a0 [ 45.094798] report_bug+0x263/0x2b0 [ 45.098414] do_error_trap+0x11b/0x200 [ 45.102291] do_invalid_op+0x37/0x50 [ 45.105991] ? __flush_work+0x74c/0x8a0 [ 45.109956] invalid_op+0x14/0x20 [ 45.113406] RIP: 0010:__flush_work+0x74c/0x8a0 [ 45.117977] Code: 74 58 e8 77 12 26 00 fb 66 0f 1f 44 00 00 45 31 e4 e9 86 fd ff ff e8 63 12 26 00 0f 0b 45 31 e4 e9 77 fd ff ff e8 54 12 26 00 <0f> 0b 45 31 e4 e9 68 fd ff ff e8 45 12 26 00 4c 89 ff 45 31 e4 e8 [ 45.136863] RSP: 0018:ffff88809049f608 EFLAGS: 00010293 [ 45.142207] RAX: ffff88808f164700 RBX: ffff88821951d900 RCX: ffffffff814a14cb [ 45.149456] RDX: 0000000000000000 RSI: ffffffff814a1b7c RDI: 0000000000000001 [ 45.156705] RBP: ffff88809049f778 R08: ffff88808f164700 R09: ffffed1012093edd [ 45.163976] R10: ffffed1012093edc R11: 0000000000000003 R12: dffffc0000000000 [ 45.171228] R13: ffff88809049f750 R14: 0000000000000000 R15: 0000000000000001 [ 45.178501] ? __flush_work+0x9b/0x8a0 [ 45.182386] ? __flush_work+0x74c/0x8a0 [ 45.186346] ? __flush_work+0x74c/0x8a0 [ 45.190303] ? insert_work+0x3a0/0x3a0 [ 45.194177] ? mark_held_locks+0xa4/0xf0 [ 45.198224] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.203772] ? refcount_sub_and_test_checked+0x154/0x200 [ 45.209220] ? refcount_dec_not_one+0x1f0/0x1f0 [ 45.213878] ? __drm_atomic_helper_crtc_destroy_state+0xf3/0x340 [ 45.220008] flush_work+0x18/0x20 [ 45.223449] vkms_atomic_crtc_destroy_state+0x2d/0x40 [ 45.228624] drm_atomic_state_default_clear+0x37c/0xd60 [ 45.233986] drm_atomic_state_clear+0x9d/0xc0 [ 45.238468] __drm_atomic_state_free+0x3c/0xf0 [ 45.243036] drm_atomic_helper_set_config+0xe5/0x160 [ 45.248126] drm_mode_setcrtc+0x613/0x1490 [ 45.252364] ? drm_mode_getcrtc+0x870/0x870 [ 45.256671] ? drm_dev_exit+0x22/0x60 [ 45.260454] ? find_held_lock+0x35/0x130 [ 45.264500] ? drm_dev_exit+0x22/0x60 [ 45.268291] ? drm_lease_owner+0x45/0x60 [ 45.272339] ? drm_is_current_master+0x5c/0x140 [ 45.277006] drm_ioctl_kernel+0x23b/0x2e0 [ 45.281147] ? drm_mode_getcrtc+0x870/0x870 [ 45.285450] ? drm_setversion+0x8c0/0x8c0 [ 45.289584] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 45.295105] ? _copy_from_user+0xdd/0x150 [ 45.299236] drm_ioctl+0x545/0xa50 [ 45.302760] ? drm_mode_getcrtc+0x870/0x870 [ 45.307067] ? drm_version+0x3d0/0x3d0 [ 45.310958] ? debug_check_no_obj_freed+0x200/0x464 [ 45.315976] ? trace_hardirqs_off+0x62/0x220 [ 45.320366] ? drm_version+0x3d0/0x3d0 [ 45.324238] do_vfs_ioctl+0xd6e/0x1390 [ 45.328111] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.333636] ? ioctl_preallocate+0x210/0x210 [ 45.338023] ? putname+0xef/0x130 [ 45.341456] ? putname+0xef/0x130 [ 45.344894] ? rcu_read_lock_sched_held+0x110/0x130 [ 45.349889] ? kmem_cache_free+0x225/0x260 [ 45.354105] ? putname+0xf4/0x130 [ 45.357542] ? do_sys_open+0x31d/0x5d0 [ 45.361421] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.366941] ? security_file_ioctl+0x93/0xc0 [ 45.371344] ksys_ioctl+0xab/0xd0 [ 45.374782] __x64_sys_ioctl+0x73/0xb0 [ 45.378654] do_syscall_64+0x103/0x610 [ 45.382531] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.387702] RIP: 0033:0x443de9 [ 45.390877] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 45.409767] RSP: 002b:00007ffc34f28be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 45.417472] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443de9 [ 45.424724] RDX: 0000000020000000 RSI: 00000000c06864a2 RDI: 0000000000000003 [ 45.431976] RBP: 00000000006ce018 R08: 0000000000000000 R09: 00000000004002e0 [ 45.439240] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401af0 [ 45.446581] R13: 0000000000401b80 R14: 0000000000000000 R15: 0000000000000000 [ 45.454714] Kernel Offset: disabled [ 45.458391] Rebooting in 86400 seconds..