[ 13.275797][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 13.275817][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.275819][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 13.275821][ T90] preempt_count: 2, expected: 0 [ 13.275822][ T90] RCU nest depth: 0, expected: 0 [ 13.275823][ T90] locks held by (udev-worker)/90: 5, last CPU#1: [ 13.275825][ T90] #0: ffffffffb9c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.275838][ T90] #1: ffffffffb9d69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.275843][ T90] #2: ffffffffb9d69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.275847][ T90] #3: ffffffffb9c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.275851][ T90] #4: ffffffffb9c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.275854][ T90] irq event stamp: 492642 [ 13.275855][ T90] hardirqs last enabled at (492641): [] __down_trylock_console_sem+0x86/0xa0 [ 13.275858][ T90] hardirqs last disabled at (492642): [] console_emit_next_record+0x3d4/0x4c0 [ 13.275860][ T90] softirqs last enabled at (492578): [] netlink_release+0x17b/0xcf0 [ 13.275864][ T90] softirqs last disabled at (492576): [] netlink_release+0xd2/0xcf0 [ 13.275866][ T90] Preemption disabled at: [ 13.275867][ T90] [<0000000000000000>] 0x0 [ 13.275874][ T90] CPU: 1 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.275877][ T90] Tainted: [W]=WARN [ 13.275878][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.275879][ T90] Call Trace: [ 13.275881][ T90] [ 13.275882][ T90] dump_stack_lvl+0x6f/0xa0 [ 13.275889][ T90] __might_resched.cold+0x1fe/0x2c1 [ 13.275893][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.275897][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 13.275902][ T90] __kmalloc_noprof+0x443/0x760 [ 13.275904][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 13.275911][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 13.275913][ T90] alloc_buf.isra.0+0x4b/0x260 [ 13.275917][ T90] put_chars+0x1e1/0x2f0 [ 13.275920][ T90] ? __send_to_port+0x420/0x420 [ 13.275922][ T90] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.275926][ T90] ? validate_chain+0x38b/0xc20 [ 13.275931][ T90] hvc_console_print+0x292/0x780 [ 13.275938][ T90] ? hvc_write+0x3a0/0x3a0 [ 13.275941][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.275943][ T90] ? lock_acquire+0x13c/0x160 [ 13.275947][ T90] console_emit_next_record+0x22f/0x4c0 [ 13.275951][ T90] ? devkmsg_read+0x4b0/0x4b0 [ 13.275952][ T90] ? console_flush_one_record+0x106/0x710 [ 13.275955][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.275957][ T90] ? lock_acquire+0x13c/0x160 [ 13.275961][ T90] console_flush_one_record+0x46f/0x710 [ 13.275965][ T90] ? console_emit_next_record+0x4c0/0x4c0 [ 13.275966][ T90] ? __lock_acquire+0x518/0xc20 [ 13.275971][ T90] console_unlock+0xee/0x1f0 [ 13.275974][ T90] ? console_flush_one_record+0x710/0x710 [ 13.275976][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.275978][ T90] ? lock_acquire+0x60/0x160 [ 13.275981][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.275982][ T90] ? vprintk_emit+0x320/0x3e0 [ 13.275985][ T90] vprintk_emit+0x37c/0x3e0 [ 13.275989][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 13.275992][ T90] ? __lock_acquire+0x518/0xc20 [ 13.275996][ T90] _printk+0xc7/0x100 [ 13.275999][ T90] ? snapshot_read.cold+0x21/0x21 [ 13.276002][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.276004][ T90] ? __rwlock_init+0x150/0x150 [ 13.276008][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.276010][ T90] do_exit.cold+0x82/0x9c [ 13.276014][ T90] ? exit_notify+0x890/0x890 [ 13.276016][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 13.276019][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.276022][ T90] do_group_exit+0xb8/0x370 [ 13.276026][ T90] __x64_sys_exit_group+0x3c/0x50 [ 13.276028][ T90] x64_sys_call+0x1567/0x1570 [ 13.276030][ T90] do_syscall_64+0xff/0x530 [ 13.276034][ T90] ? exc_page_fault+0xee/0x100 [ 13.276046][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.276048][ T90] RIP: 0033:0x7f7e724be1b8 [ 13.276050][ T90] Code: Unable to access opcode bytes at 0x7f7e724be18e. [ 13.276052][ T90] RSP: 002b:00007ffcc685bc88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.276054][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e724be1b8 [ 13.276055][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.276056][ T90] RBP: 00007ffcc685be10 R08: 000055fc72391fe8 R09: 0000000000000000 [ 13.276057][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.276058][ T90] R13: 00007f7e71d1c050 R14: 00007f7e729efd9e R15: 000055fc722389e0 [ 13.276065][ T90]