[ 13.813795][ T88] (udev-worker) (88) used greatest stack depth: 23936 bytes left [ 13.813815][ T88] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.813818][ T88] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 88, name: (udev-worker) [ 13.813820][ T88] preempt_count: 2, expected: 0 [ 13.813821][ T88] RCU nest depth: 0, expected: 0 [ 13.813822][ T88] locks held by (udev-worker)/88: 5, last CPU#2: [ 13.813824][ T88] #0: ffffffff926027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.813835][ T88] #1: ffffffff92799dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.813841][ T88] #2: ffffffff92799e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.813844][ T88] #3: ffffffff92689760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.813848][ T88] #4: ffffffff92689660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.813852][ T88] irq event stamp: 379752 [ 13.813853][ T88] hardirqs last enabled at (379751): [] __down_trylock_console_sem+0x86/0xa0 [ 13.813856][ T88] hardirqs last disabled at (379752): [] console_emit_next_record+0x3f8/0x4f0 [ 13.813858][ T88] softirqs last enabled at (379688): [] netlink_release+0x17b/0xcf0 [ 13.813862][ T88] softirqs last disabled at (379686): [] netlink_release+0xd2/0xcf0 [ 13.813865][ T88] Preemption disabled at: [ 13.813866][ T88] [<0000000000000000>] 0x0 [ 13.813873][ T88] CPU: 2 UID: 0 PID: 88 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.813877][ T88] Tainted: [W]=WARN [ 13.813877][ T88] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.813879][ T88] Call Trace: [ 13.813881][ T88] [ 13.813882][ T88] dump_stack_lvl+0x6f/0xa0 [ 13.813889][ T88] __might_resched.cold+0x1fe/0x2c1 [ 13.813893][ T88] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.813897][ T88] ? __kmalloc_noprof+0xdb/0x760 [ 13.813901][ T88] __kmalloc_noprof+0x443/0x760 [ 13.813904][ T88] ? alloc_buf.isra.0+0x4b/0x260 [ 13.813910][ T88] ? do_raw_spin_unlock+0x59/0x250 [ 13.813913][ T88] alloc_buf.isra.0+0x4b/0x260 [ 13.813916][ T88] put_chars+0x1e1/0x2f0 [ 13.813920][ T88] ? __send_to_port+0x420/0x420 [ 13.813922][ T88] ? printk_get_next_message+0x2fe/0x7d0 [ 13.813925][ T88] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.813928][ T88] ? validate_chain+0x38b/0xc20 [ 13.813932][ T88] hvc_console_print+0x292/0x780 [ 13.813936][ T88] ? __lock_acquire+0x518/0xc20 [ 13.813937][ T88] ? __lock_acquire+0x518/0xc20 [ 13.813942][ T88] ? hvc_write+0x3a0/0x3a0 [ 13.813945][ T88] ? rcu_is_watching+0x16/0xd0 [ 13.813949][ T88] ? lock_acquire+0x13c/0x160 [ 13.813952][ T88] console_emit_next_record+0x252/0x4f0 [ 13.813956][ T88] ? devkmsg_read+0x4e0/0x4e0 [ 13.813960][ T88] ? rcu_is_watching+0x16/0xd0 [ 13.813963][ T88] ? lock_acquire+0x13c/0x160 [ 13.813966][ T88] console_flush_one_record+0x46f/0x710 [ 13.813970][ T88] ? console_emit_next_record+0x4f0/0x4f0 [ 13.813972][ T88] ? __lock_acquire+0x518/0xc20 [ 13.813977][ T88] console_unlock+0xee/0x1f0 [ 13.813980][ T88] ? console_flush_one_record+0x710/0x710 [ 13.813982][ T88] ? rcu_is_watching+0x16/0xd0 [ 13.813984][ T88] ? lock_acquire+0xa0/0x160 [ 13.813988][ T88] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.813989][ T88] ? vprintk_emit+0x320/0x3e0 [ 13.813992][ T88] vprintk_emit+0x37c/0x3e0 [ 13.813996][ T88] ? wake_up_klogd_work_func+0x90/0x90 [ 13.813999][ T88] ? __lock_acquire+0x518/0xc20 [ 13.814003][ T88] _printk+0xc7/0x100 [ 13.814006][ T88] ? snapshot_read.cold+0x21/0x21 [ 13.814009][ T88] ? do_raw_spin_lock+0x131/0x280 [ 13.814011][ T88] ? __rwlock_init+0x150/0x150 [ 13.814015][ T88] ? do_raw_spin_lock+0x131/0x280 [ 13.814018][ T88] do_exit.cold+0x82/0x9c [ 13.814021][ T88] ? exit_notify+0x890/0x890 [ 13.814023][ T88] ? __lock_release.isra.0+0x69/0x1a0 [ 13.814025][ T88] ? rcu_is_watching+0x16/0xd0 [ 13.814029][ T88] do_group_exit+0xb8/0x370 [ 13.814032][ T88] __x64_sys_exit_group+0x3c/0x50 [ 13.814035][ T88] x64_sys_call+0x1567/0x1570 [ 13.814037][ T88] do_syscall_64+0xff/0x530 [ 13.814041][ T88] ? irq_exit_rcu+0x1a/0x30 [ 13.814044][ T88] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.814046][ T88] RIP: 0033:0x7fd68b5fa1b8 [ 13.814049][ T88] Code: Unable to access opcode bytes at 0x7fd68b5fa18e. [ 13.814050][ T88] RSP: 002b:00007ffd4f19baa8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.814052][ T88] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd68b5fa1b8 [ 13.814054][ T88] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.814055][ T88] RBP: 00007ffd4f19bc30 R08: 00005610a6584d08 R09: 0000000000000000 [ 13.814056][ T88] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.814056][ T88] R13: 00007fd68ae58050 R14: 00007fd68bb2bd9e R15: 00005610a641a4f0 [ 13.814063][ T88]