[ 18.799901][ T204] (udev-worker) (204) used greatest stack depth: 22696 bytes left [ 18.799920][ T204] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.799922][ T204] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 204, name: (udev-worker) [ 18.799924][ T204] preempt_count: 2, expected: 0 [ 18.799924][ T204] RCU nest depth: 0, expected: 0 [ 18.799925][ T204] locks held by (udev-worker)/204: 5, last CPU#0: [ 18.799927][ T204] #0: ffffffffa20167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 18.799939][ T204] #1: ffffffffa217ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 18.799944][ T204] #2: ffffffffa217de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 18.799948][ T204] #3: ffffffffa209d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 18.799952][ T204] #4: ffffffffa209d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 18.799956][ T204] irq event stamp: 923814 [ 18.799957][ T204] hardirqs last enabled at (923813): [] __down_trylock_console_sem+0x86/0xa0 [ 18.799960][ T204] hardirqs last disabled at (923814): [] console_emit_next_record+0x3d4/0x4c0 [ 18.799962][ T204] softirqs last enabled at (923744): [] netlink_release+0x17b/0xcf0 [ 18.799966][ T204] softirqs last disabled at (923742): [] netlink_release+0xd2/0xcf0 [ 18.799969][ T204] Preemption disabled at: [ 18.799970][ T204] [<0000000000000000>] 0x0 [ 18.799977][ T204] CPU: 0 UID: 0 PID: 204 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.799980][ T204] Tainted: [W]=WARN [ 18.799981][ T204] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.799983][ T204] Call Trace: [ 18.799984][ T204] [ 18.799986][ T204] dump_stack_lvl+0x6f/0xa0 [ 18.799992][ T204] __might_resched.cold+0x1fe/0x2c1 [ 18.799997][ T204] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.800001][ T204] ? __kmalloc_noprof+0xdb/0x760 [ 18.800007][ T204] __kmalloc_noprof+0x443/0x760 [ 18.800009][ T204] ? alloc_buf.isra.0+0x4b/0x260 [ 18.800015][ T204] ? do_raw_spin_unlock+0x59/0x250 [ 18.800018][ T204] alloc_buf.isra.0+0x4b/0x260 [ 18.800022][ T204] put_chars+0x1e1/0x2f0 [ 18.800024][ T204] ? __send_to_port+0x420/0x420 [ 18.800025][ T204] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 18.800028][ T204] ? validate_chain+0x38b/0xc20 [ 18.800034][ T204] hvc_console_print+0x292/0x780 [ 18.800041][ T204] ? hvc_write+0x3a0/0x3a0 [ 18.800044][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.800046][ T204] ? lock_acquire+0x13c/0x160 [ 18.800050][ T204] console_emit_next_record+0x22f/0x4c0 [ 18.800054][ T204] ? devkmsg_read+0x4b0/0x4b0 [ 18.800055][ T204] ? console_flush_one_record+0x106/0x710 [ 18.800059][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.800060][ T204] ? lock_acquire+0x13c/0x160 [ 18.800064][ T204] console_flush_one_record+0x46f/0x710 [ 18.800068][ T204] ? console_emit_next_record+0x4c0/0x4c0 [ 18.800070][ T204] ? __lock_acquire+0x518/0xc20 [ 18.800075][ T204] console_unlock+0xee/0x1f0 [ 18.800078][ T204] ? console_flush_one_record+0x710/0x710 [ 18.800080][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.800082][ T204] ? lock_acquire+0xe0/0x160 [ 18.800085][ T204] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.800087][ T204] ? vprintk_emit+0x320/0x3e0 [ 18.800090][ T204] vprintk_emit+0x37c/0x3e0 [ 18.800093][ T204] ? wake_up_klogd_work_func+0x90/0x90 [ 18.800095][ T204] ? __lock_acquire+0x518/0xc20 [ 18.800099][ T204] _printk+0xc7/0x100 [ 18.800103][ T204] ? snapshot_read.cold+0x21/0x21 [ 18.800105][ T204] ? do_raw_spin_lock+0x131/0x280 [ 18.800108][ T204] ? __rwlock_init+0x150/0x150 [ 18.800112][ T204] ? do_raw_spin_lock+0x131/0x280 [ 18.800114][ T204] do_exit.cold+0x82/0x9c [ 18.800118][ T204] ? exit_notify+0x890/0x890 [ 18.800119][ T204] ? __lock_release.isra.0+0x69/0x1a0 [ 18.800122][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.800125][ T204] do_group_exit+0xb8/0x370 [ 18.800128][ T204] __x64_sys_exit_group+0x3c/0x50 [ 18.800130][ T204] x64_sys_call+0x1567/0x1570 [ 18.800132][ T204] do_syscall_64+0xff/0x530 [ 18.800136][ T204] ? exc_page_fault+0xee/0x100 [ 18.800139][ T204] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.800141][ T204] RIP: 0033:0x7f81eb9d71b8 [ 18.800144][ T204] Code: Unable to access opcode bytes at 0x7f81eb9d718e. [ 18.800145][ T204] RSP: 002b:00007fffd48984e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 18.800147][ T204] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f81eb9d71b8 [ 18.800149][ T204] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 18.800150][ T204] RBP: 00007fffd4898670 R08: 00005598c40125b8 R09: 0000000000000000 [ 18.800150][ T204] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 18.800151][ T204] R13: 00007f81eb235050 R14: 00007f81ebf08d9e R15: 00005598c401b740 [ 18.800158][ T204]