[ 19.141191][ T200] (udev-worker) (200) used greatest stack depth: 22696 bytes left [ 19.141212][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 19.141214][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: (udev-worker) [ 19.141216][ T200] preempt_count: 2, expected: 0 [ 19.141217][ T200] RCU nest depth: 0, expected: 0 [ 19.141217][ T200] locks held by (udev-worker)/200: 5, last CPU#3: [ 19.141219][ T200] #0: ffffffff92a167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 19.141231][ T200] #1: ffffffff92b7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 19.141236][ T200] #2: ffffffff92b7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 19.141241][ T200] #3: ffffffff92a9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 19.141244][ T200] #4: ffffffff92a9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 19.141248][ T200] irq event stamp: 940518 [ 19.141249][ T200] hardirqs last enabled at (940517): [] __down_trylock_console_sem+0x86/0xa0 [ 19.141252][ T200] hardirqs last disabled at (940518): [] console_emit_next_record+0x3d4/0x4c0 [ 19.141254][ T200] softirqs last enabled at (940448): [] netlink_release+0x17b/0xcf0 [ 19.141259][ T200] softirqs last disabled at (940446): [] netlink_release+0xd2/0xcf0 [ 19.141261][ T200] Preemption disabled at: [ 19.141262][ T200] [<0000000000000000>] 0x0 [ 19.141269][ T200] CPU: 3 UID: 0 PID: 200 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 19.141273][ T200] Tainted: [W]=WARN [ 19.141273][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.141275][ T200] Call Trace: [ 19.141277][ T200] [ 19.141278][ T200] dump_stack_lvl+0x6f/0xa0 [ 19.141285][ T200] __might_resched.cold+0x1fe/0x2c1 [ 19.141289][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 19.141294][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 19.141298][ T200] __kmalloc_noprof+0x443/0x760 [ 19.141300][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 19.141306][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 19.141309][ T200] alloc_buf.isra.0+0x4b/0x260 [ 19.141312][ T200] put_chars+0x1e1/0x2f0 [ 19.141315][ T200] ? __send_to_port+0x420/0x420 [ 19.141316][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 19.141319][ T200] ? validate_chain+0x38b/0xc20 [ 19.141325][ T200] hvc_console_print+0x292/0x780 [ 19.141337][ T200] ? hvc_write+0x3a0/0x3a0 [ 19.141340][ T200] ? rcu_is_watching+0x16/0xd0 [ 19.141341][ T200] ? lock_acquire+0x13c/0x160 [ 19.141345][ T200] console_emit_next_record+0x22f/0x4c0 [ 19.141349][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 19.141351][ T200] ? console_flush_one_record+0x106/0x710 [ 19.141354][ T200] ? rcu_is_watching+0x16/0xd0 [ 19.141356][ T200] ? lock_acquire+0x13c/0x160 [ 19.141360][ T200] console_flush_one_record+0x46f/0x710 [ 19.141364][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 19.141365][ T200] ? __lock_acquire+0x518/0xc20 [ 19.141371][ T200] console_unlock+0xee/0x1f0 [ 19.141373][ T200] ? console_flush_one_record+0x710/0x710 [ 19.141375][ T200] ? rcu_is_watching+0x16/0xd0 [ 19.141377][ T200] ? lock_acquire+0xe0/0x160 [ 19.141380][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 19.141382][ T200] ? vprintk_emit+0x320/0x3e0 [ 19.141385][ T200] vprintk_emit+0x37c/0x3e0 [ 19.141388][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 19.141390][ T200] ? __lock_acquire+0x518/0xc20 [ 19.141394][ T200] _printk+0xc7/0x100 [ 19.141398][ T200] ? snapshot_read.cold+0x21/0x21 [ 19.141400][ T200] ? do_raw_spin_lock+0x131/0x280 [ 19.141403][ T200] ? __rwlock_init+0x150/0x150 [ 19.141406][ T200] ? do_raw_spin_lock+0x131/0x280 [ 19.141409][ T200] do_exit.cold+0x82/0x9c [ 19.141413][ T200] ? exit_notify+0x890/0x890 [ 19.141414][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 19.141417][ T200] ? rcu_is_watching+0x16/0xd0 [ 19.141420][ T200] do_group_exit+0xb8/0x370 [ 19.141423][ T200] __x64_sys_exit_group+0x3c/0x50 [ 19.141424][ T200] x64_sys_call+0x1567/0x1570 [ 19.141427][ T200] do_syscall_64+0xff/0x530 [ 19.141431][ T200] ? irq_exit_rcu+0x1a/0x30 [ 19.141434][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.141436][ T200] RIP: 0033:0x7f2c595a11b8 [ 19.141438][ T200] Code: Unable to access opcode bytes at 0x7f2c595a118e. [ 19.141439][ T200] RSP: 002b:00007fff3fd04148 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 19.141442][ T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2c595a11b8 [ 19.141443][ T200] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 19.141444][ T200] RBP: 00007fff3fd042d0 R08: 0000556beaa89298 R09: 0000000000000000 [ 19.141445][ T200] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 19.141446][ T200] R13: 00007f2c58dff050 R14: 00007f2c59ad2d9e R15: 0000556bea9059d0 [ 19.141453][ T200]