[ 41.226048][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 41.226067][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 41.226070][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 41.226071][ T84] preempt_count: 2, expected: 0 [ 41.226072][ T84] RCU nest depth: 0, expected: 0 [ 41.226073][ T84] INFO: lockdep is turned off. [ 41.226075][ T84] irq event stamp: 169020 [ 41.226076][ T84] hardirqs last enabled at (169019): [] _raw_spin_unlock_irq+0x28/0x50 [ 41.226085][ T84] hardirqs last disabled at (169020): [] __schedule+0x1246/0x20e0 [ 41.226088][ T84] softirqs last enabled at (168956): [] unix_release_sock+0x446/0xe50 [ 41.226091][ T84] softirqs last disabled at (168954): [] unix_release_sock+0x39f/0xe50 [ 41.226093][ T84] Preemption disabled at: [ 41.226094][ T84] [<0000000000000000>] 0x0 [ 41.226100][ T84] CPU: 0 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 41.226104][ T84] Tainted: [W]=WARN [ 41.226105][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 41.226107][ T84] Call Trace: [ 41.226109][ T84] [ 41.226110][ T84] dump_stack_lvl+0x6f/0xa0 [ 41.226115][ T84] __might_resched.cold+0x1fe/0x2c1 [ 41.226119][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 41.226123][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226127][ T84] __kmalloc_noprof+0x443/0x760 [ 41.226130][ T84] ? __rwlock_init+0x150/0x150 [ 41.226132][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 41.226136][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 41.226137][ T84] alloc_buf.isra.0+0x4b/0x260 [ 41.226139][ T84] put_chars+0x1e1/0x2f0 [ 41.226141][ T84] ? __send_to_port+0x420/0x420 [ 41.226143][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 41.226145][ T84] ? console_prepend_replay+0x20/0x20 [ 41.226147][ T84] ? desc_read+0x219/0x2f0 [ 41.226150][ T84] hvc_console_print+0x292/0x780 [ 41.226153][ T84] ? hvc_write+0x3a0/0x3a0 [ 41.226154][ T84] ? __rwlock_init+0x150/0x150 [ 41.226156][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226157][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226159][ T84] ? lock_acquire+0x13c/0x160 [ 41.226161][ T84] console_emit_next_record+0x252/0x4f0 [ 41.226163][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 41.226164][ T84] ? _prb_read_valid+0x6e0/0x6e0 [ 41.226166][ T84] ? __asan_memmove+0x3c/0x60 [ 41.226169][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226171][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226172][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226174][ T84] ? lock_acquire+0x13c/0x160 [ 41.226175][ T84] ? console_flush_one_record+0x111/0x710 [ 41.226177][ T84] console_flush_one_record+0x46f/0x710 [ 41.226179][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 41.226181][ T84] console_unlock+0xee/0x1f0 [ 41.226183][ T84] ? lock_acquire+0x13c/0x160 [ 41.226184][ T84] ? console_flush_one_record+0x710/0x710 [ 41.226185][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226187][ T84] ? lock_release+0x184/0x1f0 [ 41.226188][ T84] ? lock_acquire+0x60/0x160 [ 41.226189][ T84] ? sync_exp_reset_tree_hotplug+0x3a0/0x3f0 [ 41.226191][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 41.226193][ T84] ? vprintk_emit+0x320/0x3e0 [ 41.226195][ T84] vprintk_emit+0x37c/0x3e0 [ 41.226197][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 41.226199][ T84] ? do_raw_read_unlock+0x70/0x70 [ 41.226200][ T84] ? forget_original_parent+0x5c/0xdb0 [ 41.226204][ T84] _printk+0xc7/0x100 [ 41.226207][ T84] ? snapshot_read.cold+0x21/0x21 [ 41.226208][ T84] ? do_raw_spin_lock+0x131/0x280 [ 41.226210][ T84] ? do_raw_spin_lock+0x131/0x280 [ 41.226211][ T84] ? __rwlock_init+0x150/0x150 [ 41.226213][ T84] ? do_raw_spin_lock+0x131/0x280 [ 41.226215][ T84] do_exit.cold+0x82/0x9c [ 41.226217][ T84] ? vfs_read+0x3dd/0x7b0 [ 41.226220][ T84] ? exit_notify+0x890/0x890 [ 41.226222][ T84] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 41.226225][ T84] ? rcu_is_watching+0x16/0xd0 [ 41.226227][ T84] do_group_exit+0xb8/0x370 [ 41.226230][ T84] __x64_sys_exit_group+0x3c/0x50 [ 41.226231][ T84] x64_sys_call+0x1567/0x1570 [ 41.226234][ T84] do_syscall_64+0xff/0x530 [ 41.226236][ T84] ? irq_exit_rcu+0x1a/0x30 [ 41.226238][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 41.226241][ T84] RIP: 0033:0x7f37a580f1b8 [ 41.226243][ T84] Code: Unable to access opcode bytes at 0x7f37a580f18e. [ 41.226244][ T84] RSP: 002b:00007ffcaa981c88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 41.226247][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f37a580f1b8 [ 41.226249][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 41.226250][ T84] RBP: 00007ffcaa981e10 R08: 000055e8a6fc74e8 R09: 0000000000000000 [ 41.226251][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 41.226252][ T84] R13: 00007f37a506d050 R14: 00007f37a5d40d9e R15: 000055e8a6fd01f0 [ 41.226254][ T84]