[ 13.988656][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 13.988676][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.988678][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 13.988680][ T82] preempt_count: 2, expected: 0 [ 13.988681][ T82] RCU nest depth: 0, expected: 0 [ 13.988682][ T82] locks held by (udev-worker)/82: 5, last CPU#2: [ 13.988684][ T82] #0: ffffffffb54027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.988697][ T82] #1: ffffffffb5569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.988703][ T82] #2: ffffffffb5569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.988707][ T82] #3: ffffffffb5489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.988710][ T82] #4: ffffffffb5489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.988714][ T82] irq event stamp: 429460 [ 13.988715][ T82] hardirqs last enabled at (429459): [] __down_trylock_console_sem+0x86/0xa0 [ 13.988718][ T82] hardirqs last disabled at (429460): [] console_emit_next_record+0x3d4/0x4c0 [ 13.988720][ T82] softirqs last enabled at (429396): [] netlink_release+0x17b/0xcf0 [ 13.988724][ T82] softirqs last disabled at (429394): [] netlink_release+0xd2/0xcf0 [ 13.988726][ T82] Preemption disabled at: [ 13.988727][ T82] [<0000000000000000>] 0x0 [ 13.988734][ T82] CPU: 2 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.988737][ T82] Tainted: [W]=WARN [ 13.988738][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.988740][ T82] Call Trace: [ 13.988742][ T82] [ 13.988743][ T82] dump_stack_lvl+0x6f/0xa0 [ 13.988750][ T82] __might_resched.cold+0x1fe/0x2c1 [ 13.988755][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.988759][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 13.988764][ T82] __kmalloc_noprof+0x443/0x760 [ 13.988766][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 13.988772][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 13.988775][ T82] alloc_buf.isra.0+0x4b/0x260 [ 13.988778][ T82] put_chars+0x1e1/0x2f0 [ 13.988783][ T82] ? __send_to_port+0x420/0x420 [ 13.988785][ T82] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.988791][ T82] ? validate_chain+0x38b/0xc20 [ 13.988796][ T82] hvc_console_print+0x292/0x780 [ 13.988803][ T82] ? hvc_write+0x3a0/0x3a0 [ 13.988805][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.988808][ T82] ? lock_acquire+0x13c/0x160 [ 13.988812][ T82] console_emit_next_record+0x22f/0x4c0 [ 13.988815][ T82] ? devkmsg_read+0x4b0/0x4b0 [ 13.988817][ T82] ? console_flush_one_record+0x106/0x710 [ 13.988820][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.988822][ T82] ? lock_acquire+0x13c/0x160 [ 13.988825][ T82] console_flush_one_record+0x46f/0x710 [ 13.988829][ T82] ? console_emit_next_record+0x4c0/0x4c0 [ 13.988831][ T82] ? __lock_acquire+0x518/0xc20 [ 13.988836][ T82] console_unlock+0xee/0x1f0 [ 13.988838][ T82] ? console_flush_one_record+0x710/0x710 [ 13.988840][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.988842][ T82] ? lock_acquire+0x60/0x160 [ 13.988845][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.988847][ T82] ? vprintk_emit+0x320/0x3e0 [ 13.988850][ T82] vprintk_emit+0x37c/0x3e0 [ 13.988853][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 13.988856][ T82] ? __lock_acquire+0x518/0xc20 [ 13.988860][ T82] _printk+0xc7/0x100 [ 13.988864][ T82] ? snapshot_read.cold+0x21/0x21 [ 13.988866][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.988869][ T82] ? __rwlock_init+0x150/0x150 [ 13.988872][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.988875][ T82] do_exit.cold+0x82/0x9c [ 13.988879][ T82] ? exit_notify+0x890/0x890 [ 13.988880][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 13.988883][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.988887][ T82] do_group_exit+0xb8/0x370 [ 13.988890][ T82] __x64_sys_exit_group+0x3c/0x50 [ 13.988892][ T82] x64_sys_call+0x1567/0x1570 [ 13.988894][ T82] do_syscall_64+0xff/0x530 [ 13.988898][ T82] ? exc_page_fault+0xee/0x100 [ 13.988901][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.988904][ T82] RIP: 0033:0x7f3ac26d91b8 [ 13.988906][ T82] Code: Unable to access opcode bytes at 0x7f3ac26d918e. [ 13.988907][ T82] RSP: 002b:00007ffcd5985fd8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.988910][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3ac26d91b8 [ 13.988911][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.988912][ T82] RBP: 00007ffcd5986160 R08: 000055cae0a1ce98 R09: 0000000000000000 [ 13.988913][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.988914][ T82] R13: 00007f3ac1f37050 R14: 00007f3ac2c0ad9e R15: 000055cae0b53690 [ 13.988921][ T82]