[ 15.588723][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 15.588744][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.588746][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 15.588747][ T90] preempt_count: 2, expected: 0 [ 15.588748][ T90] RCU nest depth: 0, expected: 0 [ 15.588749][ T90] locks held by (udev-worker)/90: 5, last CPU#2: [ 15.588751][ T90] #0: ffffffff8b4167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.588763][ T90] #1: ffffffff8b57ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.588768][ T90] #2: ffffffff8b57de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.588772][ T90] #3: ffffffff8b49d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.588776][ T90] #4: ffffffff8b49d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 15.588780][ T90] irq event stamp: 471364 [ 15.588781][ T90] hardirqs last enabled at (471363): [] __down_trylock_console_sem+0x86/0xa0 [ 15.588784][ T90] hardirqs last disabled at (471364): [] console_emit_next_record+0x3d4/0x4c0 [ 15.588786][ T90] softirqs last enabled at (471294): [] netlink_release+0x17b/0xcf0 [ 15.588791][ T90] softirqs last disabled at (471292): [] netlink_release+0xd2/0xcf0 [ 15.588793][ T90] Preemption disabled at: [ 15.588794][ T90] [<0000000000000000>] 0x0 [ 15.588801][ T90] CPU: 2 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.588804][ T90] Tainted: [W]=WARN [ 15.588806][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.588808][ T90] Call Trace: [ 15.588809][ T90] [ 15.588811][ T90] dump_stack_lvl+0x6f/0xa0 [ 15.588817][ T90] __might_resched.cold+0x1fe/0x2c1 [ 15.588822][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.588826][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 15.588830][ T90] __kmalloc_noprof+0x443/0x760 [ 15.588832][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 15.588839][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 15.588842][ T90] alloc_buf.isra.0+0x4b/0x260 [ 15.588846][ T90] put_chars+0x1e1/0x2f0 [ 15.588848][ T90] ? __send_to_port+0x420/0x420 [ 15.588849][ T90] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 15.588853][ T90] ? validate_chain+0x38b/0xc20 [ 15.588858][ T90] hvc_console_print+0x292/0x780 [ 15.588866][ T90] ? hvc_write+0x3a0/0x3a0 [ 15.588868][ T90] ? rcu_is_watching+0x16/0xd0 [ 15.588870][ T90] ? lock_acquire+0x13c/0x160 [ 15.588874][ T90] console_emit_next_record+0x22f/0x4c0 [ 15.588878][ T90] ? devkmsg_read+0x4b0/0x4b0 [ 15.588880][ T90] ? console_flush_one_record+0x106/0x710 [ 15.588883][ T90] ? rcu_is_watching+0x16/0xd0 [ 15.588884][ T90] ? lock_acquire+0x13c/0x160 [ 15.588888][ T90] console_flush_one_record+0x46f/0x710 [ 15.588893][ T90] ? console_emit_next_record+0x4c0/0x4c0 [ 15.588894][ T90] ? __lock_acquire+0x518/0xc20 [ 15.588900][ T90] console_unlock+0xee/0x1f0 [ 15.588902][ T90] ? console_flush_one_record+0x710/0x710 [ 15.588904][ T90] ? rcu_is_watching+0x16/0xd0 [ 15.588906][ T90] ? lock_acquire+0xe0/0x160 [ 15.588909][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.588911][ T90] ? vprintk_emit+0x320/0x3e0 [ 15.588914][ T90] vprintk_emit+0x37c/0x3e0 [ 15.588917][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 15.588919][ T90] ? __lock_acquire+0x518/0xc20 [ 15.588923][ T90] _printk+0xc7/0x100 [ 15.588927][ T90] ? snapshot_read.cold+0x21/0x21 [ 15.588929][ T90] ? do_raw_spin_lock+0x131/0x280 [ 15.588932][ T90] ? __rwlock_init+0x150/0x150 [ 15.588936][ T90] ? do_raw_spin_lock+0x131/0x280 [ 15.588938][ T90] do_exit.cold+0x82/0x9c [ 15.588942][ T90] ? exit_notify+0x890/0x890 [ 15.588943][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 15.588946][ T90] ? rcu_is_watching+0x16/0xd0 [ 15.588949][ T90] do_group_exit+0xb8/0x370 [ 15.588952][ T90] __x64_sys_exit_group+0x3c/0x50 [ 15.588954][ T90] x64_sys_call+0x1567/0x1570 [ 15.588956][ T90] do_syscall_64+0xff/0x530 [ 15.588960][ T90] ? irq_exit_rcu+0x1a/0x30 [ 15.588963][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.588965][ T90] RIP: 0033:0x7f00869a91b8 [ 15.588967][ T90] Code: Unable to access opcode bytes at 0x7f00869a918e. [ 15.588968][ T90] RSP: 002b:00007fffcc4c3138 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.588971][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f00869a91b8 [ 15.588972][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.588973][ T90] RBP: 00007fffcc4c32c0 R08: 000055cae4295468 R09: 0000000000000000 [ 15.588974][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.588975][ T90] R13: 00007f0086207050 R14: 00007f0086edad9e R15: 000055cae4133dd0 [ 15.588981][ T90]