[ 14.176073][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 14.176094][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.176096][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 14.176097][ T82] preempt_count: 2, expected: 0 [ 14.176098][ T82] RCU nest depth: 0, expected: 0 [ 14.176099][ T82] locks held by (udev-worker)/82: 5, last CPU#2: [ 14.176101][ T82] #0: ffffffff95a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.176114][ T82] #1: ffffffff95b99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.176120][ T82] #2: ffffffff95b99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.176124][ T82] #3: ffffffff95a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.176128][ T82] #4: ffffffff95a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.176131][ T82] irq event stamp: 541666 [ 14.176132][ T82] hardirqs last enabled at (541665): [] __down_trylock_console_sem+0x86/0xa0 [ 14.176134][ T82] hardirqs last disabled at (541666): [] console_emit_next_record+0x3f8/0x4f0 [ 14.176136][ T82] softirqs last enabled at (541610): [] handle_softirqs+0x67c/0x900 [ 14.176139][ T82] softirqs last disabled at (541605): [] __irq_exit_rcu+0x145/0x1c0 [ 14.176142][ T82] Preemption disabled at: [ 14.176142][ T82] [<0000000000000000>] 0x0 [ 14.176149][ T82] CPU: 2 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.176153][ T82] Tainted: [W]=WARN [ 14.176154][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.176156][ T82] Call Trace: [ 14.176158][ T82] [ 14.176160][ T82] dump_stack_lvl+0x6f/0xa0 [ 14.176166][ T82] __might_resched.cold+0x1fe/0x2c1 [ 14.176171][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.176175][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 14.176179][ T82] __kmalloc_noprof+0x443/0x760 [ 14.176181][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 14.176187][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 14.176190][ T82] alloc_buf.isra.0+0x4b/0x260 [ 14.176193][ T82] put_chars+0x1e1/0x2f0 [ 14.176196][ T82] ? __send_to_port+0x420/0x420 [ 14.176197][ T82] ? printk_get_next_message+0x2fe/0x7d0 [ 14.176200][ T82] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.176203][ T82] ? validate_chain+0x38b/0xc20 [ 14.176208][ T82] hvc_console_print+0x292/0x780 [ 14.176211][ T82] ? __lock_acquire+0x518/0xc20 [ 14.176212][ T82] ? __lock_acquire+0x518/0xc20 [ 14.176216][ T82] ? hvc_write+0x3a0/0x3a0 [ 14.176219][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.176223][ T82] ? lock_acquire+0x13c/0x160 [ 14.176226][ T82] console_emit_next_record+0x252/0x4f0 [ 14.176230][ T82] ? devkmsg_read+0x4e0/0x4e0 [ 14.176234][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.176236][ T82] ? lock_acquire+0x13c/0x160 [ 14.176240][ T82] console_flush_one_record+0x46f/0x710 [ 14.176244][ T82] ? console_emit_next_record+0x4f0/0x4f0 [ 14.176246][ T82] ? __lock_acquire+0x518/0xc20 [ 14.176251][ T82] console_unlock+0xee/0x1f0 [ 14.176254][ T82] ? console_flush_one_record+0x710/0x710 [ 14.176255][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.176257][ T82] ? lock_acquire+0x60/0x160 [ 14.176261][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.176262][ T82] ? vprintk_emit+0x320/0x3e0 [ 14.176265][ T82] vprintk_emit+0x37c/0x3e0 [ 14.176269][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 14.176272][ T82] ? __lock_acquire+0x518/0xc20 [ 14.176276][ T82] _printk+0xc7/0x100 [ 14.176280][ T82] ? snapshot_read.cold+0x21/0x21 [ 14.176282][ T82] ? do_raw_spin_lock+0x131/0x280 [ 14.176285][ T82] ? __rwlock_init+0x150/0x150 [ 14.176288][ T82] ? do_raw_spin_lock+0x131/0x280 [ 14.176291][ T82] do_exit.cold+0x82/0x9c [ 14.176295][ T82] ? exit_notify+0x890/0x890 [ 14.176297][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 14.176299][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.176303][ T82] do_group_exit+0xb8/0x370 [ 14.176307][ T82] __x64_sys_exit_group+0x3c/0x50 [ 14.176309][ T82] x64_sys_call+0x1567/0x1570 [ 14.176312][ T82] do_syscall_64+0xff/0x530 [ 14.176315][ T82] ? exc_page_fault+0xee/0x100 [ 14.176318][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.176320][ T82] RIP: 0033:0x7fa22ddb31b8 [ 14.176323][ T82] Code: Unable to access opcode bytes at 0x7fa22ddb318e. [ 14.176324][ T82] RSP: 002b:00007ffe67081d98 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.176327][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa22ddb31b8 [ 14.176328][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.176329][ T82] RBP: 00007ffe67081f20 R08: 0000559ef06d8f48 R09: 0000000000000000 [ 14.176330][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.176331][ T82] R13: 00007fa22d611050 R14: 00007fa22e2e4d9e R15: 0000559ef081c690 [ 14.176338][ T82]