[ 22.951088][ T82] (udev-worker) (82) used greatest stack depth: 22760 bytes left [ 22.951104][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 22.951106][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 22.951107][ T82] preempt_count: 2, expected: 0 [ 22.951108][ T82] RCU nest depth: 0, expected: 0 [ 22.951109][ T82] locks held by (udev-worker)/82: 5, last CPU#2: [ 22.951112][ T82] #0: ffffffff8ce027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 22.951123][ T82] #1: ffffffff8cf69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 22.951128][ T82] #2: ffffffff8cf69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 22.951132][ T82] #3: ffffffff8ce89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 22.951135][ T82] #4: ffffffff8ce89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 22.951138][ T82] irq event stamp: 864190 [ 22.951139][ T82] hardirqs last enabled at (864189): [] __down_trylock_console_sem+0x86/0xa0 [ 22.951142][ T82] hardirqs last disabled at (864190): [] console_emit_next_record+0x3d4/0x4c0 [ 22.951144][ T82] softirqs last enabled at (864126): [] netlink_release+0x17b/0xcf0 [ 22.951148][ T82] softirqs last disabled at (864124): [] netlink_release+0xd2/0xcf0 [ 22.951151][ T82] Preemption disabled at: [ 22.951151][ T82] [<0000000000000000>] 0x0 [ 22.951158][ T82] CPU: 2 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 22.951161][ T82] Tainted: [W]=WARN [ 22.951162][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.951164][ T82] Call Trace: [ 22.951165][ T82] [ 22.951167][ T82] dump_stack_lvl+0x6f/0xa0 [ 22.951172][ T82] __might_resched.cold+0x1fe/0x2c1 [ 22.951176][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 22.951180][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 22.951185][ T82] __kmalloc_noprof+0x443/0x760 [ 22.951187][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 22.951193][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 22.951196][ T82] alloc_buf.isra.0+0x4b/0x260 [ 22.951203][ T82] put_chars+0x1e1/0x2f0 [ 22.951207][ T82] ? __send_to_port+0x420/0x420 [ 22.951208][ T82] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 22.951212][ T82] ? validate_chain+0x38b/0xc20 [ 22.951217][ T82] hvc_console_print+0x292/0x780 [ 22.951224][ T82] ? hvc_write+0x3a0/0x3a0 [ 22.951226][ T82] ? rcu_is_watching+0x16/0xd0 [ 22.951228][ T82] ? lock_acquire+0x13c/0x160 [ 22.951232][ T82] console_emit_next_record+0x22f/0x4c0 [ 22.951236][ T82] ? devkmsg_read+0x4b0/0x4b0 [ 22.951237][ T82] ? console_flush_one_record+0x106/0x710 [ 22.951240][ T82] ? rcu_is_watching+0x16/0xd0 [ 22.951241][ T82] ? lock_acquire+0x13c/0x160 [ 22.951245][ T82] console_flush_one_record+0x46f/0x710 [ 22.951249][ T82] ? console_emit_next_record+0x4c0/0x4c0 [ 22.951250][ T82] ? __lock_acquire+0x518/0xc20 [ 22.951255][ T82] console_unlock+0xee/0x1f0 [ 22.951257][ T82] ? console_flush_one_record+0x710/0x710 [ 22.951259][ T82] ? rcu_is_watching+0x16/0xd0 [ 22.951260][ T82] ? lock_acquire+0x60/0x160 [ 22.951264][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 22.951266][ T82] ? vprintk_emit+0x320/0x3e0 [ 22.951269][ T82] vprintk_emit+0x37c/0x3e0 [ 22.951272][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 22.951275][ T82] ? __lock_acquire+0x518/0xc20 [ 22.951278][ T82] _printk+0xc7/0x100 [ 22.951282][ T82] ? snapshot_read.cold+0x21/0x21 [ 22.951285][ T82] ? do_raw_spin_lock+0x131/0x280 [ 22.951287][ T82] ? __rwlock_init+0x150/0x150 [ 22.951291][ T82] ? do_raw_spin_lock+0x131/0x280 [ 22.951294][ T82] do_exit.cold+0x82/0x9c [ 22.951297][ T82] ? exit_notify+0x890/0x890 [ 22.951299][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 22.951302][ T82] ? rcu_is_watching+0x16/0xd0 [ 22.951305][ T82] do_group_exit+0xb8/0x370 [ 22.951308][ T82] __x64_sys_exit_group+0x3c/0x50 [ 22.951310][ T82] x64_sys_call+0x1567/0x1570 [ 22.951312][ T82] do_syscall_64+0xff/0x530 [ 22.951316][ T82] ? irq_exit_rcu+0x1a/0x30 [ 22.951319][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 22.951321][ T82] RIP: 0033:0x7f54934fd1b8 [ 22.951323][ T82] Code: Unable to access opcode bytes at 0x7f54934fd18e. [ 22.951324][ T82] RSP: 002b:00007ffc02c9e748 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 22.951327][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f54934fd1b8 [ 22.951328][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 22.951329][ T82] RBP: 00007ffc02c9e8d0 R08: 000055f8c2c6af48 R09: 0000000000000000 [ 22.951330][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 22.951330][ T82] R13: 00007f5492d5b050 R14: 00007f5493a2ed9e R15: 000055f8c2dae690 [ 22.951337][ T82]