[ 43.542913][ T205] (udev-worker) (205) used greatest stack depth: 22696 bytes left [ 43.542934][ T205] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 43.542936][ T205] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 205, name: (udev-worker) [ 43.542937][ T205] preempt_count: 2, expected: 0 [ 43.542938][ T205] RCU nest depth: 0, expected: 0 [ 43.542939][ T205] locks held by (udev-worker)/205: 5, last CPU#1: [ 43.542941][ T205] #0: ffffffff9b2167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 43.542953][ T205] #1: ffffffff9b37ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 43.542958][ T205] #2: ffffffff9b37de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 43.542962][ T205] #3: ffffffff9b29d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 43.542966][ T205] #4: ffffffff9b29d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 43.542970][ T205] irq event stamp: 5119748 [ 43.542971][ T205] hardirqs last enabled at (5119747): [] __down_trylock_console_sem+0x86/0xa0 [ 43.542974][ T205] hardirqs last disabled at (5119748): [] console_emit_next_record+0x3d4/0x4c0 [ 43.542976][ T205] softirqs last enabled at (5119742): [] handle_softirqs+0x67c/0x900 [ 43.542979][ T205] softirqs last disabled at (5118599): [] __irq_exit_rcu+0x145/0x1c0 [ 43.542981][ T205] Preemption disabled at: [ 43.542982][ T205] [<0000000000000000>] 0x0 [ 43.542989][ T205] CPU: 1 UID: 0 PID: 205 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 43.542992][ T205] Tainted: [W]=WARN [ 43.542993][ T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 43.542994][ T205] Call Trace: [ 43.542996][ T205] [ 43.542997][ T205] dump_stack_lvl+0x6f/0xa0 [ 43.543003][ T205] __might_resched.cold+0x1fe/0x2c1 [ 43.543008][ T205] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 43.543012][ T205] ? __kmalloc_noprof+0xdb/0x760 [ 43.543016][ T205] __kmalloc_noprof+0x443/0x760 [ 43.543018][ T205] ? alloc_buf.isra.0+0x4b/0x260 [ 43.543024][ T205] ? do_raw_spin_unlock+0x59/0x250 [ 43.543027][ T205] alloc_buf.isra.0+0x4b/0x260 [ 43.543031][ T205] put_chars+0x1e1/0x2f0 [ 43.543033][ T205] ? __send_to_port+0x420/0x420 [ 43.543034][ T205] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 43.543038][ T205] ? validate_chain+0x38b/0xc20 [ 43.543043][ T205] hvc_console_print+0x292/0x780 [ 43.543051][ T205] ? hvc_write+0x3a0/0x3a0 [ 43.543053][ T205] ? rcu_is_watching+0x16/0xd0 [ 43.543055][ T205] ? lock_acquire+0x13c/0x160 [ 43.543059][ T205] console_emit_next_record+0x22f/0x4c0 [ 43.543064][ T205] ? devkmsg_read+0x4b0/0x4b0 [ 43.543065][ T205] ? console_flush_one_record+0x106/0x710 [ 43.543069][ T205] ? rcu_is_watching+0x16/0xd0 [ 43.543070][ T205] ? lock_acquire+0x13c/0x160 [ 43.543075][ T205] console_flush_one_record+0x46f/0x710 [ 43.543079][ T205] ? console_emit_next_record+0x4c0/0x4c0 [ 43.543081][ T205] ? __lock_acquire+0x518/0xc20 [ 43.543086][ T205] console_unlock+0xee/0x1f0 [ 43.543089][ T205] ? console_flush_one_record+0x710/0x710 [ 43.543091][ T205] ? rcu_is_watching+0x16/0xd0 [ 43.543093][ T205] ? lock_acquire+0xe0/0x160 [ 43.543097][ T205] ? __down_trylock_console_sem+0x5e/0xa0 [ 43.543098][ T205] ? vprintk_emit+0x320/0x3e0 [ 43.543101][ T205] vprintk_emit+0x37c/0x3e0 [ 43.543104][ T205] ? wake_up_klogd_work_func+0x90/0x90 [ 43.543107][ T205] ? __lock_acquire+0x518/0xc20 [ 43.543111][ T205] _printk+0xc7/0x100 [ 43.543115][ T205] ? snapshot_read.cold+0x21/0x21 [ 43.543118][ T205] ? do_raw_spin_lock+0x131/0x280 [ 43.543120][ T205] ? __rwlock_init+0x150/0x150 [ 43.543124][ T205] ? do_raw_spin_lock+0x131/0x280 [ 43.543127][ T205] do_exit.cold+0x82/0x9c [ 43.543131][ T205] ? exit_notify+0x890/0x890 [ 43.543132][ T205] ? __lock_release.isra.0+0x69/0x1a0 [ 43.543135][ T205] ? rcu_is_watching+0x16/0xd0 [ 43.543138][ T205] do_group_exit+0xb8/0x370 [ 43.543141][ T205] __x64_sys_exit_group+0x3c/0x50 [ 43.543143][ T205] x64_sys_call+0x1567/0x1570 [ 43.543145][ T205] do_syscall_64+0xff/0x530 [ 43.543149][ T205] ? exc_page_fault+0xee/0x100 [ 43.543152][ T205] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 43.543154][ T205] RIP: 0033:0x7f81e25e71b8 [ 43.543157][ T205] Code: Unable to access opcode bytes at 0x7f81e25e718e. [ 43.543158][ T205] RSP: 002b:00007ffd66a5fd68 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 43.543160][ T205] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f81e25e71b8 [ 43.543162][ T205] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 43.543162][ T205] RBP: 00007ffd66a5fef0 R08: 000055b4a382d7b8 R09: 0000000000000000 [ 43.543163][ T205] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 43.543164][ T205] R13: 00007f81e1e45050 R14: 00007f81e2b18d9e R15: 000055b4a3699750 [ 43.543171][ T205]