[ 16.407758][ T188] (udev-worker) (188) used greatest stack depth: 22696 bytes left [ 16.407778][ T188] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.407780][ T188] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 188, name: (udev-worker) [ 16.407782][ T188] preempt_count: 2, expected: 0 [ 16.407783][ T188] RCU nest depth: 0, expected: 0 [ 16.407784][ T188] locks held by (udev-worker)/188: 5, last CPU#2: [ 16.407786][ T188] #0: ffffffff990027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.407798][ T188] #1: ffffffff99199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.407803][ T188] #2: ffffffff99199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.407807][ T188] #3: ffffffff99089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.407811][ T188] #4: ffffffff99089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.407815][ T188] irq event stamp: 484922 [ 16.407816][ T188] hardirqs last enabled at (484921): [] __down_trylock_console_sem+0x86/0xa0 [ 16.407819][ T188] hardirqs last disabled at (484922): [] console_emit_next_record+0x3f8/0x4f0 [ 16.407821][ T188] softirqs last enabled at (484858): [] netlink_release+0x17b/0xcf0 [ 16.407825][ T188] softirqs last disabled at (484856): [] netlink_release+0xd2/0xcf0 [ 16.407828][ T188] Preemption disabled at: [ 16.407829][ T188] [<0000000000000000>] 0x0 [ 16.407836][ T188] CPU: 2 UID: 0 PID: 188 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.407839][ T188] Tainted: [W]=WARN [ 16.407840][ T188] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.407842][ T188] Call Trace: [ 16.407844][ T188] [ 16.407846][ T188] dump_stack_lvl+0x6f/0xa0 [ 16.407853][ T188] __might_resched.cold+0x1fe/0x2c1 [ 16.407858][ T188] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.407862][ T188] ? __kmalloc_noprof+0xdb/0x760 [ 16.407868][ T188] __kmalloc_noprof+0x443/0x760 [ 16.407871][ T188] ? alloc_buf.isra.0+0x4b/0x260 [ 16.407877][ T188] ? do_raw_spin_unlock+0x59/0x250 [ 16.407880][ T188] alloc_buf.isra.0+0x4b/0x260 [ 16.407883][ T188] put_chars+0x1e1/0x2f0 [ 16.407887][ T188] ? __send_to_port+0x420/0x420 [ 16.407888][ T188] ? printk_get_next_message+0x2fe/0x7d0 [ 16.407892][ T188] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.407896][ T188] ? validate_chain+0x38b/0xc20 [ 16.407900][ T188] hvc_console_print+0x292/0x780 [ 16.407903][ T188] ? __lock_acquire+0x518/0xc20 [ 16.407905][ T188] ? __lock_acquire+0x518/0xc20 [ 16.407910][ T188] ? hvc_write+0x3a0/0x3a0 [ 16.407913][ T188] ? rcu_is_watching+0x16/0xd0 [ 16.407915][ T188] ? lock_acquire+0x13c/0x160 [ 16.407919][ T188] console_emit_next_record+0x252/0x4f0 [ 16.407923][ T188] ? devkmsg_read+0x4e0/0x4e0 [ 16.407928][ T188] ? rcu_is_watching+0x16/0xd0 [ 16.407929][ T188] ? lock_acquire+0x13c/0x160 [ 16.407933][ T188] console_flush_one_record+0x46f/0x710 [ 16.407938][ T188] ? console_emit_next_record+0x4f0/0x4f0 [ 16.407940][ T188] ? __lock_acquire+0x518/0xc20 [ 16.407945][ T188] console_unlock+0xee/0x1f0 [ 16.407948][ T188] ? console_flush_one_record+0x710/0x710 [ 16.407950][ T188] ? rcu_is_watching+0x16/0xd0 [ 16.407952][ T188] ? lock_acquire+0x60/0x160 [ 16.407955][ T188] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.407957][ T188] ? vprintk_emit+0x320/0x3e0 [ 16.407960][ T188] vprintk_emit+0x37c/0x3e0 [ 16.407963][ T188] ? wake_up_klogd_work_func+0x90/0x90 [ 16.407966][ T188] ? __lock_acquire+0x518/0xc20 [ 16.407970][ T188] _printk+0xc7/0x100 [ 16.407973][ T188] ? snapshot_read.cold+0x21/0x21 [ 16.407976][ T188] ? do_raw_spin_lock+0x131/0x280 [ 16.407979][ T188] ? __rwlock_init+0x150/0x150 [ 16.407983][ T188] ? do_raw_spin_lock+0x131/0x280 [ 16.407986][ T188] do_exit.cold+0x82/0x9c [ 16.407990][ T188] ? exit_notify+0x890/0x890 [ 16.407991][ T188] ? __lock_release.isra.0+0x69/0x1a0 [ 16.407994][ T188] ? rcu_is_watching+0x16/0xd0 [ 16.407997][ T188] do_group_exit+0xb8/0x370 [ 16.408000][ T188] __x64_sys_exit_group+0x3c/0x50 [ 16.408002][ T188] x64_sys_call+0x1567/0x1570 [ 16.408004][ T188] do_syscall_64+0xff/0x530 [ 16.408008][ T188] ? exc_page_fault+0xee/0x100 [ 16.408011][ T188] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.408014][ T188] RIP: 0033:0x7f3b869841b8 [ 16.408016][ T188] Code: Unable to access opcode bytes at 0x7f3b8698418e. [ 16.408017][ T188] RSP: 002b:00007ffda3723228 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.408020][ T188] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b869841b8 [ 16.408021][ T188] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.408022][ T188] RBP: 00007ffda37233b0 R08: 00005560ea2d20e8 R09: 0000000000000000 [ 16.408023][ T188] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.408024][ T188] R13: 00007f3b861e2050 R14: 00007f3b86eb5d9e R15: 00005560ea2a1830 [ 16.408030][ T188]