[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 41.407476] audit: type=1400 audit(1600752379.624:8): avc: denied { execmem } for pid=6489 comm="syz-executor817" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 41.412867] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.442135] ================================================================================ [ 41.450810] UBSAN: Undefined behaviour in net/sched/cls_tcindex.c:238:29 [ 41.457662] shift exponent 44 is too large for 32-bit type 'int' [ 41.463791] CPU: 0 PID: 6491 Comm: syz-executor817 Not tainted 4.19.146-syzkaller #0 [ 41.471666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.481004] Call Trace: [ 41.483597] dump_stack+0x22c/0x33e [ 41.487218] ubsan_epilogue+0xe/0x3a [ 41.490930] __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 [ 41.497073] ? kmem_cache_alloc_trace+0x379/0x4b0 [ 41.501964] tcindex_set_parms.cold+0x170/0x22f [ 41.506698] ? tcindex_classify+0x500/0x500 [ 41.511003] ? kasan_kmalloc+0x139/0x160 [ 41.515050] ? netlink_rcv_skb+0x160/0x440 [ 41.519264] ? netlink_unicast+0x4d5/0x690 [ 41.523521] ? netlink_sendmsg+0x717/0xcc0 [ 41.527743] ? sock_sendmsg+0xc7/0x130 [ 41.531621] ? validate_nla+0x2c6/0x970 [ 41.535584] tcindex_change+0x220/0x2f3 [ 41.539543] ? tcindex_set_parms+0x2260/0x2260 [ 41.544124] ? tcindex_lookup+0x98/0x420 [ 41.548169] ? tcindex_set_parms+0x2260/0x2260 [ 41.552734] tc_new_tfilter+0xb38/0x1570 [ 41.556791] ? tcf_chain_tp_remove+0x2e0/0x2e0 [ 41.561373] ? selinux_inode_copy_up+0x180/0x180 [ 41.566113] ? rtnetlink_rcv_msg+0x443/0xc10 [ 41.570501] ? ww_mutex_unlock+0x2f0/0x2f0 [ 41.574724] ? tcf_chain_tp_remove+0x2e0/0x2e0 [ 41.579287] rtnetlink_rcv_msg+0x498/0xc10 [ 41.583505] ? rtnl_get_link+0x270/0x270 [ 41.587563] ? __netlink_lookup+0x481/0x7e0 [ 41.591867] ? find_held_lock+0x2d/0x110 [ 41.595910] netlink_rcv_skb+0x160/0x440 [ 41.599967] ? rtnl_get_link+0x270/0x270 [ 41.604027] ? netlink_ack+0xae0/0xae0 [ 41.607899] netlink_unicast+0x4d5/0x690 [ 41.611944] ? netlink_sendskb+0x110/0x110 [ 41.616177] netlink_sendmsg+0x717/0xcc0 [ 41.620219] ? nlmsg_notify+0x1a0/0x1a0 [ 41.624178] ? __sock_recv_ts_and_drops+0x540/0x540 [ 41.629179] ? nlmsg_notify+0x1a0/0x1a0 [ 41.633138] sock_sendmsg+0xc7/0x130 [ 41.636833] ___sys_sendmsg+0x7bb/0x8f0 [ 41.640803] ? copy_msghdr_from_user+0x440/0x440 [ 41.645556] ? do_huge_pmd_anonymous_page+0x939/0x1d70 [ 41.650818] ? prep_transhuge_page+0xa0/0xa0 [ 41.655227] ? check_preemption_disabled+0x41/0x2b0 [ 41.660226] ? mark_held_locks+0xf0/0xf0 [ 41.664294] ? sock_has_perm+0x203/0x2c0 [ 41.668351] ? selinux_tun_dev_attach_queue+0x140/0x140 [ 41.673693] ? sock_has_perm+0x203/0x2c0 [ 41.677739] ? selinux_tun_dev_attach_queue+0x140/0x140 [ 41.683100] ? selinux_netlbl_socket_setsockopt+0x9e/0x3c0 [ 41.688704] ? selinux_netlbl_sock_rcv_skb+0x4d0/0x4d0 [ 41.693983] ? ip_getsockopt+0xa1/0x1c0 [ 41.697940] ? compat_ip_getsockopt+0x210/0x210 [ 41.702606] ? __fget_light+0x1a2/0x230 [ 41.706581] __x64_sys_sendmsg+0x132/0x220 [ 41.710798] ? __sys_sendmsg+0x1b0/0x1b0 [ 41.714845] ? kernel_setsockopt+0x1c0/0x1c0 [ 41.719254] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 41.723992] ? trace_hardirqs_off_caller+0x69/0x210 [ 41.728990] ? do_syscall_64+0x21/0x670 [ 41.732964] do_syscall_64+0xf9/0x670 [ 41.736780] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.741977] RIP: 0033:0x441629 executing program [ 41.745178] Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 1b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 41.764069] RSP: 002b:00007ffdf6c12348 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.771771] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441629 [ 41.779033] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 [ 41.786283] RBP: 000000000000a1c1 R08: 00000000004002c8 R09: 00000000004002c8 [ 41.793534] R10: 0000000020000080 R11: 0000000000000246 R12: 00000000004023d0 [ 41.800793] R13: 0000000000402460 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program [ 41.808052] ================================================================================ [ 41.818691] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.834898] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. executing program executing program executing program [ 41.851179] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.866346] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.880207] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.897317] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 41.910695] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.925637] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 41.939445] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.421224] nla_parse: 830 callbacks suppressed [ 46.421233] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.443339] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.456892] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. executing program executing program executing program [ 46.470862] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.484667] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.498725] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 46.517281] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.531620] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.546372] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. [ 46.561443] netlink: 4 bytes leftover after parsing attributes in process `syz-executor817'. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 49.343279] ------------[ cut here ]------------ [ 49.348797] ODEBUG: free active (active state 0) object type: work_struct hint: tcindex_destroy_rexts_work+0x0/0x20 [ 49.359575] WARNING: CPU: 1 PID: 46 at lib/debugobjects.c:325 debug_print_object+0x194/0x2b0 [ 49.368131] Kernel panic - not syncing: panic_on_warn set ... [ 49.368131] [ 49.375506] CPU: 1 PID: 46 Comm: kworker/u4:2 Not tainted 4.19.146-syzkaller #0 [ 49.382931] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.392269] Workqueue: tc_filter_workqueue tcindex_destroy_work [ 49.398321] Call Trace: [ 49.400903] dump_stack+0x22c/0x33e [ 49.404572] panic+0x2ac/0x565 [ 49.407745] ? __warn_printk+0xf3/0xf3 [ 49.411781] ? debug_print_object+0x194/0x2b0 [ 49.416259] ? __probe_kernel_read+0x130/0x1b0 [ 49.420830] ? __warn.cold+0x5/0x5a [ 49.424491] ? __warn+0xe4/0x200 [ 49.427837] ? debug_print_object+0x194/0x2b0 [ 49.432311] __warn.cold+0x20/0x5a [ 49.435834] ? console_unlock+0x5d0/0x1080 [ 49.440054] ? debug_print_object+0x194/0x2b0 [ 49.444528] report_bug+0x262/0x2b0 [ 49.448133] do_error_trap+0x1e1/0x330 [ 49.452007] ? math_error+0x320/0x320 [ 49.455820] ? irq_work_claim+0xa6/0xc0 [ 49.459796] ? irq_work_queue+0x29/0x80 [ 49.463751] ? wake_up_klogd+0xef/0x140 [ 49.467699] ? vprintk_emit+0x1d0/0x7c0 [ 49.471650] ? trace_hardirqs_off_caller+0x69/0x210 [ 49.476659] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.481486] invalid_op+0x14/0x20 [ 49.484920] RIP: 0010:debug_print_object+0x194/0x2b0 [ 49.490005] Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e3 00 00 00 48 8b 14 dd 80 53 18 8a 4c 89 ee 48 c7 c7 40 f8 51 88 e8 d2 ec 9f fd <0f> 0b 83 05 7f e3 97 07 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 [ 49.508900] RSP: 0018:ffff8880a9087c30 EFLAGS: 00010082 [ 49.514245] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 49.521535] RDX: 0000000000000000 RSI: ffffffff815b523f RDI: ffffed1015210f78 [ 49.529852] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 [ 49.537105] R10: 0000000000000005 R11: 000000001c9ab7ee R12: ffffffff896b6620 [ 49.544354] R13: ffffffff8851fb60 R14: ffffffff814891e0 R15: dffffc0000000000 [ 49.551621] ? work_is_static_object+0x40/0x40 [ 49.556278] ? vprintk_func+0x7f/0x224 [ 49.560155] debug_check_no_obj_freed+0x271/0x482 [ 49.564979] kfree+0xb9/0x250 [ 49.568064] tcindex_destroy_work+0x2e/0x70 [ 49.572422] process_one_work+0x796/0x14e0 [ 49.576662] ? init_worker_pool+0x5c0/0x5c0 [ 49.580974] worker_thread+0x64c/0x1130 [ 49.584940] ? __kthread_parkme+0x133/0x1e0 [ 49.589241] ? rescuer_thread+0xce0/0xce0 [ 49.593372] kthread+0x33f/0x460 [ 49.596719] ? kthread_park+0x180/0x180 [ 49.600674] ret_from_fork+0x24/0x30 [ 49.604386] [ 49.604390] ====================================================== [ 49.604393] WARNING: possible circular locking dependency detected [ 49.604395] 4.19.146-syzkaller #0 Not tainted [ 49.604399] ------------------------------------------------------ [ 49.604401] kworker/u4:2/46 is trying to acquire lock: [ 49.604403] 00000000e964086c ((console_sem).lock){-...}, at: down_trylock+0xe/0x60 [ 49.604411] [ 49.604414] but task is already holding lock: [ 49.604416] 000000000eaeed1e (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0xb5/0x482 [ 49.604424] [ 49.604426] which lock already depends on the new lock. [ 49.604427] [ 49.604429] [ 49.604432] the existing dependency chain (in reverse order) is: [ 49.604433] [ 49.604434] -> #5 (&obj_hash[i].lock){-.-.}: [ 49.604442] debug_object_activate+0x132/0x450 [ 49.604444] enqueue_hrtimer+0x2b/0x420 [ 49.604447] hrtimer_start_range_ns+0x606/0xd90 [ 49.604449] watchdog_enable+0x188/0x280 [ 49.604451] softlockup_start_fn+0x11/0x20 [ 49.604454] smp_call_on_cpu_callback+0xde/0x1f0 [ 49.604456] process_one_work+0x796/0x14e0 [ 49.604458] worker_thread+0x64c/0x1130 [ 49.604460] kthread+0x33f/0x460 [ 49.604463] ret_from_fork+0x24/0x30 [ 49.604464] [ 49.604465] -> #4 (hrtimer_bases.lock){-.-.}: [ 49.604473] hrtimer_start_range_ns+0xf8/0xd90 [ 49.604475] enqueue_task_rt+0x5ee/0xf30 [ 49.604478] __sched_setscheduler.constprop.0+0xcb4/0x1d80 [ 49.604483] sched_setscheduler+0xec/0x180 [ 49.604486] watchdog_dev_init+0xdd/0x1ae [ 49.604488] watchdog_init+0x14/0x17a [ 49.604490] do_one_initcall+0xf1/0x786 [ 49.604492] kernel_init_freeable+0xb43/0xc31 [ 49.604494] kernel_init+0xe/0x1e6 [ 49.604497] ret_from_fork+0x24/0x30 [ 49.604498] [ 49.604499] -> #3 (&rt_b->rt_runtime_lock){-.-.}: [ 49.604507] rq_online_rt+0xaf/0x390 [ 49.604509] set_rq_online+0x116/0x180 [ 49.604511] sched_cpu_activate+0x197/0x370 [ 49.604514] cpuhp_invoke_callback+0x259/0x1de0 [ 49.604516] cpuhp_thread_fun+0x598/0x890 [ 49.604518] smpboot_thread_fn+0x66e/0xa30 [ 49.604520] kthread+0x33f/0x460 [ 49.604522] ret_from_fork+0x24/0x30 [ 49.604523] [ 49.604525] -> #2 (&rq->lock){-.-.}: [ 49.604532] task_fork_fair+0x98/0x4c0 [ 49.604534] sched_fork+0x3da/0x920 [ 49.604536] copy_process.part.0+0x188b/0x7fb0 [ 49.604538] _do_fork+0x22f/0x1020 [ 49.604540] kernel_thread+0x2f/0x40 [ 49.604542] rest_init+0x21/0x3fc [ 49.604544] start_kernel+0x93d/0x978 [ 49.604547] secondary_startup_64+0xa4/0xb0 [ 49.604548] [ 49.604549] -> #1 (&p->pi_lock){-.-.}: [ 49.604556] try_to_wake_up+0x80/0x12b0 [ 49.604558] up+0x74/0xb0 [ 49.604560] __up_console_sem+0xb3/0x1f0 [ 49.604562] console_unlock+0x5c4/0x1080 [ 49.604565] vprintk_emit+0x2b8/0x7c0 [ 49.604567] vprintk_func+0x77/0x224 [ 49.604569] printk+0xba/0xed [ 49.604571] kauditd_hold_skb+0x184/0x1d0 [ 49.604574] kauditd_send_queue+0x12f/0x170 [ 49.604576] kauditd_thread+0x64a/0x830 [ 49.604578] kthread+0x33f/0x460 [ 49.604580] ret_from_fork+0x24/0x30 [ 49.604581] [ 49.604582] -> #0 ((console_sem).lock){-...}: [ 49.604590] _raw_spin_lock_irqsave+0x90/0xe0 [ 49.604592] down_trylock+0xe/0x60 [ 49.604595] __down_trylock_console_sem+0xa3/0x240 [ 49.604597] vprintk_emit+0x26a/0x7c0 [ 49.604599] vprintk_func+0x77/0x224 [ 49.604601] printk+0xba/0xed [ 49.604603] __warn_printk+0x9b/0xf3 [ 49.604605] debug_print_object+0x194/0x2b0 [ 49.604608] debug_check_no_obj_freed+0x271/0x482 [ 49.604610] kfree+0xb9/0x250 [ 49.604612] tcindex_destroy_work+0x2e/0x70 [ 49.604614] process_one_work+0x796/0x14e0 [ 49.604617] worker_thread+0x64c/0x1130 [ 49.604619] kthread+0x33f/0x460 [ 49.604621] ret_from_fork+0x24/0x30 [ 49.604622] [ 49.604625] other info that might help us debug this: [ 49.604626] [ 49.604627] Chain exists of: [ 49.604628] (console_sem).lock --> hrtimer_bases.lock --> &obj_hash[i].lock [ 49.604638] [ 49.604641] Possible unsafe locking scenario: [ 49.604642] [ 49.604644] CPU0 CPU1 [ 49.604646] ---- ---- [ 49.604648] lock(&obj_hash[i].lock); [ 49.604653] lock(hrtimer_bases.lock); [ 49.604658] lock(&obj_hash[i].lock); [ 49.604662] lock((console_sem).lock); [ 49.604666] [ 49.604668] *** DEADLOCK *** [ 49.604669] [ 49.604671] 3 locks held by kworker/u4:2/46: [ 49.604673] #0: 0000000009b8558e ((wq_completion)"tc_filter_workqueue"){+.+.}, at: process_one_work+0x692/0x14e0 [ 49.604682] #1: 00000000a7249fbb ((work_completion)(&(rwork)->work)){+.+.}, at: process_one_work+0x6c8/0x14e0 [ 49.604692] #2: 000000000eaeed1e (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0xb5/0x482 [ 49.604701] [ 49.604703] stack backtrace: [ 49.604707] CPU: 1 PID: 46 Comm: kworker/u4:2 Not tainted 4.19.146-syzkaller #0 [ 49.604711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.604714] Workqueue: tc_filter_workqueue tcindex_destroy_work [ 49.604717] Call Trace: [ 49.604719] dump_stack+0x22c/0x33e [ 49.604722] print_circular_bug.constprop.0.cold+0x2d7/0x41e [ 49.604724] __lock_acquire+0x37ad/0x3ff0 [ 49.604727] ? format_decode+0x232/0xca0 [ 49.604729] ? mark_held_locks+0xf0/0xf0 [ 49.604731] ? dentry_name+0x7a0/0x7a0 [ 49.604733] ? memcpy+0x35/0x50 [ 49.604735] ? kvm_sched_clock_read+0x14/0x40 [ 49.604738] lock_acquire+0x170/0x3f0 [ 49.604740] ? down_trylock+0xe/0x60 [ 49.604742] ? vprintk_func+0x77/0x224 [ 49.604744] _raw_spin_lock_irqsave+0x90/0xe0 [ 49.604746] ? down_trylock+0xe/0x60 [ 49.604748] down_trylock+0xe/0x60 [ 49.604750] ? vprintk_func+0x77/0x224 [ 49.604753] ? vprintk_func+0x77/0x224 [ 49.604755] __down_trylock_console_sem+0xa3/0x240 [ 49.604757] vprintk_emit+0x26a/0x7c0 [ 49.604760] ? work_is_static_object+0x40/0x40 [ 49.604762] vprintk_func+0x77/0x224 [ 49.604764] printk+0xba/0xed [ 49.604766] ? log_store.cold+0x16/0x16 [ 49.604768] ? __lock_acquire+0x6ec/0x3ff0 [ 49.604770] ? __warn_printk+0x8f/0xf3 [ 49.604773] ? __tcindex_destroy_rexts+0x80/0x80 [ 49.604775] __warn_printk+0x9b/0xf3 [ 49.604777] ? add_taint.cold+0x16/0x16 [ 49.604779] ? debug_object_deactivate+0x200/0x2e0 [ 49.604782] ? lock_acquire+0x170/0x3f0 [ 49.604784] ? __tcindex_destroy_rexts+0x80/0x80 [ 49.604786] debug_print_object+0x194/0x2b0 [ 49.604789] debug_check_no_obj_freed+0x271/0x482 [ 49.604791] kfree+0xb9/0x250 [ 49.604793] tcindex_destroy_work+0x2e/0x70 [ 49.604795] process_one_work+0x796/0x14e0 [ 49.604798] ? init_worker_pool+0x5c0/0x5c0 [ 49.604800] worker_thread+0x64c/0x1130 [ 49.604802] ? __kthread_parkme+0x133/0x1e0 [ 49.604804] ? rescuer_thread+0xce0/0xce0 [ 49.604806] kthread+0x33f/0x460 [ 49.604809] ? kthread_park+0x180/0x180 [ 49.604811] ret_from_fork+0x24/0x30 [ 49.606352] Kernel Offset: disabled [ 50.294567] Rebooting in 86400 seconds..