[ 12.306542][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 12.306562][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.306565][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 12.306566][ T84] preempt_count: 2, expected: 0 [ 12.306567][ T84] RCU nest depth: 0, expected: 0 [ 12.306568][ T84] locks held by (udev-worker)/84: 5, last CPU#2: [ 12.306570][ T84] #0: ffffffffbc0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.306581][ T84] #1: ffffffffbc199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.306587][ T84] #2: ffffffffbc199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.306592][ T84] #3: ffffffffbc089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.306596][ T84] #4: ffffffffbc089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.306600][ T84] irq event stamp: 386444 [ 12.306601][ T84] hardirqs last enabled at (386443): [] __down_trylock_console_sem+0x86/0xa0 [ 12.306603][ T84] hardirqs last disabled at (386444): [] console_emit_next_record+0x3f8/0x4f0 [ 12.306606][ T84] softirqs last enabled at (386422): [] handle_softirqs+0x67c/0x900 [ 12.306608][ T84] softirqs last disabled at (386067): [] __irq_exit_rcu+0x145/0x1c0 [ 12.306610][ T84] Preemption disabled at: [ 12.306611][ T84] [<0000000000000000>] 0x0 [ 12.306617][ T84] CPU: 2 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.306621][ T84] Tainted: [W]=WARN [ 12.306622][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.306623][ T84] Call Trace: [ 12.306625][ T84] [ 12.306627][ T84] dump_stack_lvl+0x6f/0xa0 [ 12.306633][ T84] __might_resched.cold+0x1fe/0x2c1 [ 12.306637][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.306641][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 12.306646][ T84] __kmalloc_noprof+0x443/0x760 [ 12.306649][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 12.306656][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 12.306658][ T84] alloc_buf.isra.0+0x4b/0x260 [ 12.306662][ T84] put_chars+0x1e1/0x2f0 [ 12.306665][ T84] ? __send_to_port+0x420/0x420 [ 12.306667][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 12.306671][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.306674][ T84] ? validate_chain+0x38b/0xc20 [ 12.306678][ T84] hvc_console_print+0x292/0x780 [ 12.306682][ T84] ? __lock_acquire+0x518/0xc20 [ 12.306683][ T84] ? __lock_acquire+0x518/0xc20 [ 12.306688][ T84] ? hvc_write+0x3a0/0x3a0 [ 12.306692][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.306695][ T84] ? lock_acquire+0x13c/0x160 [ 12.306699][ T84] console_emit_next_record+0x252/0x4f0 [ 12.306703][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 12.306707][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.306710][ T84] ? lock_acquire+0x13c/0x160 [ 12.306714][ T84] console_flush_one_record+0x46f/0x710 [ 12.306718][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 12.306720][ T84] ? __lock_acquire+0x518/0xc20 [ 12.306725][ T84] console_unlock+0xee/0x1f0 [ 12.306728][ T84] ? console_flush_one_record+0x710/0x710 [ 12.306730][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.306732][ T84] ? lock_acquire+0xa0/0x160 [ 12.306736][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.306738][ T84] ? vprintk_emit+0x320/0x3e0 [ 12.306741][ T84] vprintk_emit+0x37c/0x3e0 [ 12.306745][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 12.306753][ T84] ? __lock_acquire+0x518/0xc20 [ 12.306757][ T84] _printk+0xc7/0x100 [ 12.306760][ T84] ? snapshot_read.cold+0x21/0x21 [ 12.306763][ T84] ? do_raw_spin_lock+0x131/0x280 [ 12.306766][ T84] ? __rwlock_init+0x150/0x150 [ 12.306770][ T84] ? do_raw_spin_lock+0x131/0x280 [ 12.306772][ T84] do_exit.cold+0x82/0x9c [ 12.306776][ T84] ? exit_notify+0x890/0x890 [ 12.306777][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 12.306780][ T84] ? rcu_is_watching+0x16/0xd0 [ 12.306784][ T84] do_group_exit+0xb8/0x370 [ 12.306787][ T84] __x64_sys_exit_group+0x3c/0x50 [ 12.306789][ T84] x64_sys_call+0x1567/0x1570 [ 12.306791][ T84] do_syscall_64+0xff/0x530 [ 12.306795][ T84] ? irq_exit_rcu+0x1a/0x30 [ 12.306797][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.306800][ T84] RIP: 0033:0x7f8176d941b8 [ 12.306802][ T84] Code: Unable to access opcode bytes at 0x7f8176d9418e. [ 12.306803][ T84] RSP: 002b:00007ffe722d57b8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.306806][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8176d941b8 [ 12.306807][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.306808][ T84] RBP: 00007ffe722d5940 R08: 0000562d3b030978 R09: 0000000000000000 [ 12.306809][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.306809][ T84] R13: 00007f81765f2050 R14: 00007f81772c5d9e R15: 0000562d3b023650 [ 12.306816][ T84]