[ 13.232085][ T92] (udev-worker) (92) used greatest stack depth: 22696 bytes left [ 13.232100][ T92] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.232102][ T92] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 92, name: (udev-worker) [ 13.232104][ T92] preempt_count: 2, expected: 0 [ 13.232105][ T92] RCU nest depth: 0, expected: 0 [ 13.232106][ T92] locks held by (udev-worker)/92: 5, last CPU#3: [ 13.232108][ T92] #0: ffffffff86c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.232120][ T92] #1: ffffffff86d99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.232125][ T92] #2: ffffffff86d99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.232129][ T92] #3: ffffffff86c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.232133][ T92] #4: ffffffff86c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.232136][ T92] irq event stamp: 473016 [ 13.232137][ T92] hardirqs last enabled at (473015): [] __down_trylock_console_sem+0x86/0xa0 [ 13.232139][ T92] hardirqs last disabled at (473016): [] console_emit_next_record+0x3f8/0x4f0 [ 13.232141][ T92] softirqs last enabled at (472952): [] netlink_release+0x17b/0xcf0 [ 13.232145][ T92] softirqs last disabled at (472950): [] netlink_release+0xd2/0xcf0 [ 13.232148][ T92] Preemption disabled at: [ 13.232148][ T92] [<0000000000000000>] 0x0 [ 13.232155][ T92] CPU: 3 UID: 0 PID: 92 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.232158][ T92] Tainted: [W]=WARN [ 13.232159][ T92] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.232160][ T92] Call Trace: [ 13.232162][ T92] [ 13.232164][ T92] dump_stack_lvl+0x6f/0xa0 [ 13.232170][ T92] __might_resched.cold+0x1fe/0x2c1 [ 13.232174][ T92] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.232178][ T92] ? __kmalloc_noprof+0xdb/0x760 [ 13.232182][ T92] __kmalloc_noprof+0x443/0x760 [ 13.232184][ T92] ? alloc_buf.isra.0+0x4b/0x260 [ 13.232190][ T92] ? do_raw_spin_unlock+0x59/0x250 [ 13.232192][ T92] alloc_buf.isra.0+0x4b/0x260 [ 13.232195][ T92] put_chars+0x1e1/0x2f0 [ 13.232198][ T92] ? __send_to_port+0x420/0x420 [ 13.232199][ T92] ? printk_get_next_message+0x2fe/0x7d0 [ 13.232202][ T92] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.232206][ T92] ? validate_chain+0x38b/0xc20 [ 13.232210][ T92] hvc_console_print+0x292/0x780 [ 13.232212][ T92] ? __lock_acquire+0x518/0xc20 [ 13.232214][ T92] ? __lock_acquire+0x518/0xc20 [ 13.232218][ T92] ? hvc_write+0x3a0/0x3a0 [ 13.232220][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.232224][ T92] ? lock_acquire+0x13c/0x160 [ 13.232227][ T92] console_emit_next_record+0x252/0x4f0 [ 13.232231][ T92] ? devkmsg_read+0x4e0/0x4e0 [ 13.232235][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.232237][ T92] ? lock_acquire+0x13c/0x160 [ 13.232240][ T92] console_flush_one_record+0x46f/0x710 [ 13.232244][ T92] ? console_emit_next_record+0x4f0/0x4f0 [ 13.232245][ T92] ? __lock_acquire+0x518/0xc20 [ 13.232250][ T92] console_unlock+0xee/0x1f0 [ 13.232253][ T92] ? console_flush_one_record+0x710/0x710 [ 13.232254][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.232256][ T92] ? lock_acquire+0x60/0x160 [ 13.232259][ T92] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.232261][ T92] ? vprintk_emit+0x320/0x3e0 [ 13.232264][ T92] vprintk_emit+0x37c/0x3e0 [ 13.232267][ T92] ? wake_up_klogd_work_func+0x90/0x90 [ 13.232270][ T92] ? __lock_acquire+0x518/0xc20 [ 13.232273][ T92] _printk+0xc7/0x100 [ 13.232277][ T92] ? snapshot_read.cold+0x21/0x21 [ 13.232280][ T92] ? do_raw_spin_lock+0x131/0x280 [ 13.232282][ T92] ? __rwlock_init+0x150/0x150 [ 13.232285][ T92] ? do_raw_spin_lock+0x131/0x280 [ 13.232288][ T92] do_exit.cold+0x82/0x9c [ 13.232291][ T92] ? exit_notify+0x890/0x890 [ 13.232293][ T92] ? __lock_release.isra.0+0x69/0x1a0 [ 13.232295][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.232299][ T92] do_group_exit+0xb8/0x370 [ 13.232302][ T92] __x64_sys_exit_group+0x3c/0x50 [ 13.232305][ T92] x64_sys_call+0x1567/0x1570 [ 13.232307][ T92] do_syscall_64+0xff/0x530 [ 13.232310][ T92] ? exc_page_fault+0xee/0x100 [ 13.232313][ T92] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.232316][ T92] RIP: 0033:0x7f5bf8eb81b8 [ 13.232318][ T92] Code: Unable to access opcode bytes at 0x7f5bf8eb818e. [ 13.232319][ T92] RSP: 002b:00007ffc658c5898 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.232321][ T92] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5bf8eb81b8 [ 13.232322][ T92] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.232323][ T92] RBP: 00007ffc658c5a20 R08: 0000557a76fa3f28 R09: 0000000000000000 [ 13.232324][ T92] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.232324][ T92] R13: 00007f5bf8716050 R14: 00007f5bf93e9d9e R15: 0000557a76f55770 [ 13.232331][ T92]