[ 38.728806][ T200] (udev-worker) (200) used greatest stack depth: 22696 bytes left [ 38.728825][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 38.728827][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: (udev-worker) [ 38.728829][ T200] preempt_count: 2, expected: 0 [ 38.728830][ T200] RCU nest depth: 0, expected: 0 [ 38.728831][ T200] locks held by (udev-worker)/200: 5, last CPU#0: [ 38.728833][ T200] #0: ffffffffa30167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 38.728845][ T200] #1: ffffffffa317ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 38.728849][ T200] #2: ffffffffa317de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 38.728854][ T200] #3: ffffffffa309d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 38.728857][ T200] #4: ffffffffa309d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 38.728861][ T200] irq event stamp: 5116744 [ 38.728862][ T200] hardirqs last enabled at (5116743): [] __down_trylock_console_sem+0x86/0xa0 [ 38.728865][ T200] hardirqs last disabled at (5116744): [] console_emit_next_record+0x3d4/0x4c0 [ 38.728867][ T200] softirqs last enabled at (5116674): [] handle_softirqs+0x67c/0x900 [ 38.728869][ T200] softirqs last disabled at (5114839): [] do_softirq+0xac/0xe0 [ 38.728872][ T200] Preemption disabled at: [ 38.728872][ T200] [<0000000000000000>] 0x0 [ 38.728879][ T200] CPU: 0 UID: 0 PID: 200 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 38.728882][ T200] Tainted: [W]=WARN [ 38.728883][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 38.728885][ T200] Call Trace: [ 38.728886][ T200] [ 38.728888][ T200] dump_stack_lvl+0x6f/0xa0 [ 38.728894][ T200] __might_resched.cold+0x1fe/0x2c1 [ 38.728899][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 38.728903][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 38.728907][ T200] __kmalloc_noprof+0x443/0x760 [ 38.728909][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 38.728916][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 38.728919][ T200] alloc_buf.isra.0+0x4b/0x260 [ 38.728923][ T200] put_chars+0x1e1/0x2f0 [ 38.728925][ T200] ? __send_to_port+0x420/0x420 [ 38.728926][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 38.728930][ T200] ? validate_chain+0x38b/0xc20 [ 38.728935][ T200] hvc_console_print+0x292/0x780 [ 38.728943][ T200] ? hvc_write+0x3a0/0x3a0 [ 38.728945][ T200] ? rcu_is_watching+0x16/0xd0 [ 38.728947][ T200] ? lock_acquire+0x13c/0x160 [ 38.728951][ T200] console_emit_next_record+0x22f/0x4c0 [ 38.728955][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 38.728957][ T200] ? console_flush_one_record+0x106/0x710 [ 38.728960][ T200] ? rcu_is_watching+0x16/0xd0 [ 38.728962][ T200] ? lock_acquire+0x13c/0x160 [ 38.728966][ T200] console_flush_one_record+0x46f/0x710 [ 38.728970][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 38.728972][ T200] ? __lock_acquire+0x518/0xc20 [ 38.728977][ T200] console_unlock+0xee/0x1f0 [ 38.728984][ T200] ? console_flush_one_record+0x710/0x710 [ 38.728986][ T200] ? rcu_is_watching+0x16/0xd0 [ 38.728988][ T200] ? lock_acquire+0xe0/0x160 [ 38.728991][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 38.728993][ T200] ? vprintk_emit+0x320/0x3e0 [ 38.728996][ T200] vprintk_emit+0x37c/0x3e0 [ 38.728999][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 38.729002][ T200] ? __lock_acquire+0x518/0xc20 [ 38.729005][ T200] _printk+0xc7/0x100 [ 38.729009][ T200] ? snapshot_read.cold+0x21/0x21 [ 38.729012][ T200] ? do_raw_spin_lock+0x131/0x280 [ 38.729015][ T200] ? __rwlock_init+0x150/0x150 [ 38.729018][ T200] ? do_raw_spin_lock+0x131/0x280 [ 38.729021][ T200] do_exit.cold+0x82/0x9c [ 38.729025][ T200] ? exit_notify+0x890/0x890 [ 38.729026][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 38.729029][ T200] ? rcu_is_watching+0x16/0xd0 [ 38.729032][ T200] do_group_exit+0xb8/0x370 [ 38.729035][ T200] __x64_sys_exit_group+0x3c/0x50 [ 38.729037][ T200] x64_sys_call+0x1567/0x1570 [ 38.729040][ T200] do_syscall_64+0xff/0x530 [ 38.729044][ T200] ? irq_exit_rcu+0x1a/0x30 [ 38.729046][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 38.729048][ T200] RIP: 0033:0x7f9d13cca1b8 [ 38.729051][ T200] Code: Unable to access opcode bytes at 0x7f9d13cca18e. [ 38.729052][ T200] RSP: 002b:00007fff70f60238 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 38.729054][ T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9d13cca1b8 [ 38.729056][ T200] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 38.729056][ T200] RBP: 00007fff70f603c0 R08: 000055d9919f0558 R09: 0000000000000000 [ 38.729057][ T200] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 38.729058][ T200] R13: 00007f9d13528050 R14: 00007f9d141fbd9e R15: 000055d991869920 [ 38.729065][ T200]