[ 12.425956][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 12.425975][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.425978][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 12.425979][ T90] preempt_count: 2, expected: 0 [ 12.425980][ T90] RCU nest depth: 0, expected: 0 [ 12.425981][ T90] locks held by (udev-worker)/90: 5, last CPU#3: [ 12.425983][ T90] #0: ffffffffa2e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.425995][ T90] #1: ffffffffa2f99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.426001][ T90] #2: ffffffffa2f99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.426005][ T90] #3: ffffffffa2e89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.426008][ T90] #4: ffffffffa2e89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.426012][ T90] irq event stamp: 468930 [ 12.426013][ T90] hardirqs last enabled at (468929): [] __down_trylock_console_sem+0x86/0xa0 [ 12.426015][ T90] hardirqs last disabled at (468930): [] console_emit_next_record+0x3f8/0x4f0 [ 12.426018][ T90] softirqs last enabled at (468866): [] netlink_release+0x17b/0xcf0 [ 12.426021][ T90] softirqs last disabled at (468864): [] netlink_release+0xd2/0xcf0 [ 12.426024][ T90] Preemption disabled at: [ 12.426025][ T90] [<0000000000000000>] 0x0 [ 12.426032][ T90] CPU: 3 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.426035][ T90] Tainted: [W]=WARN [ 12.426036][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.426038][ T90] Call Trace: [ 12.426039][ T90] [ 12.426041][ T90] dump_stack_lvl+0x6f/0xa0 [ 12.426047][ T90] __might_resched.cold+0x1fe/0x2c1 [ 12.426051][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.426055][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 12.426060][ T90] __kmalloc_noprof+0x443/0x760 [ 12.426063][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 12.426069][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 12.426072][ T90] alloc_buf.isra.0+0x4b/0x260 [ 12.426075][ T90] put_chars+0x1e1/0x2f0 [ 12.426079][ T90] ? __send_to_port+0x420/0x420 [ 12.426081][ T90] ? printk_get_next_message+0x2fe/0x7d0 [ 12.426084][ T90] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.426087][ T90] ? validate_chain+0x38b/0xc20 [ 12.426091][ T90] hvc_console_print+0x292/0x780 [ 12.426095][ T90] ? __lock_acquire+0x518/0xc20 [ 12.426097][ T90] ? __lock_acquire+0x518/0xc20 [ 12.426101][ T90] ? hvc_write+0x3a0/0x3a0 [ 12.426105][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.426108][ T90] ? lock_acquire+0x13c/0x160 [ 12.426112][ T90] console_emit_next_record+0x252/0x4f0 [ 12.426116][ T90] ? devkmsg_read+0x4e0/0x4e0 [ 12.426120][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.426123][ T90] ? lock_acquire+0x13c/0x160 [ 12.426127][ T90] console_flush_one_record+0x46f/0x710 [ 12.426131][ T90] ? console_emit_next_record+0x4f0/0x4f0 [ 12.426132][ T90] ? __lock_acquire+0x518/0xc20 [ 12.426137][ T90] console_unlock+0xee/0x1f0 [ 12.426140][ T90] ? console_flush_one_record+0x710/0x710 [ 12.426142][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.426144][ T90] ? lock_acquire+0xa0/0x160 [ 12.426148][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.426149][ T90] ? vprintk_emit+0x320/0x3e0 [ 12.426153][ T90] vprintk_emit+0x37c/0x3e0 [ 12.426156][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 12.426160][ T90] ? __lock_acquire+0x518/0xc20 [ 12.426163][ T90] _printk+0xc7/0x100 [ 12.426167][ T90] ? snapshot_read.cold+0x21/0x21 [ 12.426170][ T90] ? do_raw_spin_lock+0x131/0x280 [ 12.426173][ T90] ? __rwlock_init+0x150/0x150 [ 12.426176][ T90] ? do_raw_spin_lock+0x131/0x280 [ 12.426179][ T90] do_exit.cold+0x82/0x9c [ 12.426182][ T90] ? exit_notify+0x890/0x890 [ 12.426184][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 12.426186][ T90] ? rcu_is_watching+0x16/0xd0 [ 12.426190][ T90] do_group_exit+0xb8/0x370 [ 12.426193][ T90] __x64_sys_exit_group+0x3c/0x50 [ 12.426195][ T90] x64_sys_call+0x1567/0x1570 [ 12.426197][ T90] do_syscall_64+0xff/0x530 [ 12.426200][ T90] ? irq_exit_rcu+0x1a/0x30 [ 12.426203][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.426205][ T90] RIP: 0033:0x7f180c8071b8 [ 12.426207][ T90] Code: Unable to access opcode bytes at 0x7f180c80718e. [ 12.426208][ T90] RSP: 002b:00007ffdf9cd7fd8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.426211][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f180c8071b8 [ 12.426212][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.426213][ T90] RBP: 00007ffdf9cd8160 R08: 00005641c8ad9498 R09: 0000000000000000 [ 12.426214][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.426215][ T90] R13: 00007f180c065050 R14: 00007f180cd38d9e R15: 00005641c8ac0730 [ 12.426222][ T90]