[ 15.535835][ T180] (udev-worker) (180) used greatest stack depth: 22696 bytes left [ 15.535855][ T180] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.535858][ T180] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 180, name: (udev-worker) [ 15.535859][ T180] preempt_count: 2, expected: 0 [ 15.535860][ T180] RCU nest depth: 0, expected: 0 [ 15.535861][ T180] locks held by (udev-worker)/180: 5, last CPU#1: [ 15.535863][ T180] #0: ffffffffa2c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.535875][ T180] #1: ffffffffa2d99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.535880][ T180] #2: ffffffffa2d99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.535885][ T180] #3: ffffffffa2c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.535889][ T180] #4: ffffffffa2c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.535894][ T180] irq event stamp: 148734 [ 15.535895][ T180] hardirqs last enabled at (148733): [] __down_trylock_console_sem+0x86/0xa0 [ 15.535899][ T180] hardirqs last disabled at (148734): [] console_emit_next_record+0x3f8/0x4f0 [ 15.535903][ T180] softirqs last enabled at (148670): [] netlink_release+0x17b/0xcf0 [ 15.535908][ T180] softirqs last disabled at (148668): [] netlink_release+0xd2/0xcf0 [ 15.535910][ T180] Preemption disabled at: [ 15.535911][ T180] [<0000000000000000>] 0x0 [ 15.535919][ T180] CPU: 1 UID: 0 PID: 180 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.535922][ T180] Tainted: [W]=WARN [ 15.535923][ T180] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.535925][ T180] Call Trace: [ 15.535927][ T180] [ 15.535928][ T180] dump_stack_lvl+0x6f/0xa0 [ 15.535935][ T180] __might_resched.cold+0x1fe/0x2c1 [ 15.535940][ T180] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.535945][ T180] ? __kmalloc_noprof+0xdb/0x760 [ 15.535951][ T180] __kmalloc_noprof+0x443/0x760 [ 15.535954][ T180] ? alloc_buf.isra.0+0x4b/0x260 [ 15.535960][ T180] ? do_raw_spin_unlock+0x59/0x250 [ 15.535963][ T180] alloc_buf.isra.0+0x4b/0x260 [ 15.535967][ T180] put_chars+0x1e1/0x2f0 [ 15.535971][ T180] ? __send_to_port+0x420/0x420 [ 15.535973][ T180] ? printk_get_next_message+0x2fe/0x7d0 [ 15.535977][ T180] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.535981][ T180] ? validate_chain+0x38b/0xc20 [ 15.535988][ T180] hvc_console_print+0x292/0x780 [ 15.535992][ T180] ? __lock_acquire+0x518/0xc20 [ 15.535994][ T180] ? __lock_acquire+0x518/0xc20 [ 15.535999][ T180] ? hvc_write+0x3a0/0x3a0 [ 15.536003][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.536006][ T180] ? lock_acquire+0x13c/0x160 [ 15.536011][ T180] console_emit_next_record+0x252/0x4f0 [ 15.536015][ T180] ? devkmsg_read+0x4e0/0x4e0 [ 15.536020][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.536022][ T180] ? lock_acquire+0x13c/0x160 [ 15.536027][ T180] console_flush_one_record+0x46f/0x710 [ 15.536032][ T180] ? console_emit_next_record+0x4f0/0x4f0 [ 15.536034][ T180] ? __lock_acquire+0x518/0xc20 [ 15.536040][ T180] console_unlock+0xee/0x1f0 [ 15.536044][ T180] ? console_flush_one_record+0x710/0x710 [ 15.536046][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.536048][ T180] ? lock_acquire+0x60/0x160 [ 15.536052][ T180] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.536054][ T180] ? vprintk_emit+0x320/0x3e0 [ 15.536057][ T180] vprintk_emit+0x37c/0x3e0 [ 15.536061][ T180] ? wake_up_klogd_work_func+0x90/0x90 [ 15.536064][ T180] ? __lock_acquire+0x518/0xc20 [ 15.536069][ T180] _printk+0xc7/0x100 [ 15.536072][ T180] ? snapshot_read.cold+0x21/0x21 [ 15.536076][ T180] ? do_raw_spin_lock+0x131/0x280 [ 15.536079][ T180] ? __rwlock_init+0x150/0x150 [ 15.536083][ T180] ? do_raw_spin_lock+0x131/0x280 [ 15.536086][ T180] do_exit.cold+0x82/0x9c [ 15.536090][ T180] ? exit_notify+0x890/0x890 [ 15.536092][ T180] ? __lock_release.isra.0+0x69/0x1a0 [ 15.536095][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.536099][ T180] do_group_exit+0xb8/0x370 [ 15.536102][ T180] __x64_sys_exit_group+0x3c/0x50 [ 15.536104][ T180] x64_sys_call+0x1567/0x1570 [ 15.536107][ T180] do_syscall_64+0xff/0x530 [ 15.536111][ T180] ? exc_page_fault+0xee/0x100 [ 15.536114][ T180] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.536116][ T180] RIP: 0033:0x7f8a899b21b8 [ 15.536119][ T180] Code: Unable to access opcode bytes at 0x7f8a899b218e. [ 15.536120][ T180] RSP: 002b:00007ffccc152a68 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.536122][ T180] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8a899b21b8 [ 15.536124][ T180] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.536125][ T180] RBP: 00007ffccc152bf0 R08: 000055a231860328 R09: 0000000000000000 [ 15.536126][ T180] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.536127][ T180] R13: 00007f8a89210050 R14: 00007f8a89ee3d9e R15: 000055a2316c9f70 [ 15.536134][ T180]