[ 14.847630][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 14.847654][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.847657][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 14.847660][ T85] preempt_count: 2, expected: 0 [ 14.847661][ T85] RCU nest depth: 0, expected: 0 [ 14.847663][ T85] locks held by (udev-worker)/85: 5, last CPU#1: [ 14.847666][ T85] #0: ffffffff89e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.847682][ T85] #1: ffffffff89f69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.847690][ T85] #2: ffffffff89f69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.847695][ T85] #3: ffffffff89e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.847701][ T85] #4: ffffffff89e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.847708][ T85] irq event stamp: 469292 [ 14.847709][ T85] hardirqs last enabled at (469291): [] __down_trylock_console_sem+0x86/0xa0 [ 14.847713][ T85] hardirqs last disabled at (469292): [] console_emit_next_record+0x3d4/0x4c0 [ 14.847715][ T85] softirqs last enabled at (469222): [] netlink_release+0x17b/0xcf0 [ 14.847721][ T85] softirqs last disabled at (469220): [] netlink_release+0xd2/0xcf0 [ 14.847724][ T85] Preemption disabled at: [ 14.847725][ T85] [<0000000000000000>] 0x0 [ 14.847735][ T85] CPU: 1 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.847739][ T85] Tainted: [W]=WARN [ 14.847741][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.847743][ T85] Call Trace: [ 14.847746][ T85] [ 14.847748][ T85] dump_stack_lvl+0x6f/0xa0 [ 14.847756][ T85] __might_resched.cold+0x1fe/0x2c1 [ 14.847762][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.847768][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 14.847778][ T85] __kmalloc_noprof+0x443/0x760 [ 14.847782][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 14.847791][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 14.847795][ T85] alloc_buf.isra.0+0x4b/0x260 [ 14.847801][ T85] put_chars+0x1e1/0x2f0 [ 14.847805][ T85] ? __send_to_port+0x420/0x420 [ 14.847808][ T85] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.847815][ T85] ? validate_chain+0x38b/0xc20 [ 14.847823][ T85] hvc_console_print+0x292/0x780 [ 14.847835][ T85] ? hvc_write+0x3a0/0x3a0 [ 14.847839][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.847843][ T85] ? lock_acquire+0x13c/0x160 [ 14.847850][ T85] console_emit_next_record+0x22f/0x4c0 [ 14.847856][ T85] ? devkmsg_read+0x4b0/0x4b0 [ 14.847858][ T85] ? console_flush_one_record+0x106/0x710 [ 14.847863][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.847867][ T85] ? lock_acquire+0x13c/0x160 [ 14.847874][ T85] console_flush_one_record+0x46f/0x710 [ 14.847881][ T85] ? console_emit_next_record+0x4c0/0x4c0 [ 14.847883][ T85] ? __lock_acquire+0x518/0xc20 [ 14.847892][ T85] console_unlock+0xee/0x1f0 [ 14.847896][ T85] ? console_flush_one_record+0x710/0x710 [ 14.847899][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.847902][ T85] ? lock_acquire+0x60/0x160 [ 14.847908][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.847911][ T85] ? vprintk_emit+0x320/0x3e0 [ 14.847916][ T85] vprintk_emit+0x37c/0x3e0 [ 14.847922][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 14.847928][ T85] ? __lock_acquire+0x518/0xc20 [ 14.847934][ T85] _printk+0xc7/0x100 [ 14.847940][ T85] ? snapshot_read.cold+0x21/0x21 [ 14.847944][ T85] ? do_raw_spin_lock+0x131/0x280 [ 14.847949][ T85] ? __rwlock_init+0x150/0x150 [ 14.847955][ T85] ? do_raw_spin_lock+0x131/0x280 [ 14.847959][ T85] do_exit.cold+0x82/0x9c [ 14.847965][ T85] ? exit_notify+0x890/0x890 [ 14.847968][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 14.847972][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.847980][ T85] do_group_exit+0xb8/0x370 [ 14.847985][ T85] __x64_sys_exit_group+0x3c/0x50 [ 14.847989][ T85] x64_sys_call+0x1567/0x1570 [ 14.847992][ T85] do_syscall_64+0xff/0x530 [ 14.847997][ T85] ? common_interrupt+0x5a/0xf0 [ 14.848001][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.848005][ T85] RIP: 0033:0x7f869b56d1b8 [ 14.848009][ T85] Code: Unable to access opcode bytes at 0x7f869b56d18e. [ 14.848010][ T85] RSP: 002b:00007ffdd09e5c88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.848014][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f869b56d1b8 [ 14.848016][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.848018][ T85] RBP: 00007ffdd09e5e10 R08: 000055deb917e7a8 R09: 0000000000000000 [ 14.848019][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.848021][ T85] R13: 00007f869adcb050 R14: 00007f869ba9ed9e R15: 000055deb901bdf0 [ 14.848034][ T85]