[ 13.531201][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 13.531217][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.531219][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 13.531220][ T84] preempt_count: 2, expected: 0 [ 13.531221][ T84] RCU nest depth: 0, expected: 0 [ 13.531222][ T84] locks held by (udev-worker)/84: 5, last CPU#1: [ 13.531224][ T84] #0: ffffffff9dc027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.531236][ T84] #1: ffffffff9dd99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.531241][ T84] #2: ffffffff9dd99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.531245][ T84] #3: ffffffff9dc89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.531248][ T84] #4: ffffffff9dc89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.531251][ T84] irq event stamp: 445282 [ 13.531252][ T84] hardirqs last enabled at (445281): [] __down_trylock_console_sem+0x86/0xa0 [ 13.531254][ T84] hardirqs last disabled at (445282): [] console_emit_next_record+0x3f8/0x4f0 [ 13.531256][ T84] softirqs last enabled at (445218): [] netlink_release+0x17b/0xcf0 [ 13.531260][ T84] softirqs last disabled at (445216): [] netlink_release+0xd2/0xcf0 [ 13.531262][ T84] Preemption disabled at: [ 13.531263][ T84] [<0000000000000000>] 0x0 [ 13.531269][ T84] CPU: 1 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.531273][ T84] Tainted: [W]=WARN [ 13.531274][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.531275][ T84] Call Trace: [ 13.531277][ T84] [ 13.531278][ T84] dump_stack_lvl+0x6f/0xa0 [ 13.531284][ T84] __might_resched.cold+0x1fe/0x2c1 [ 13.531288][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.531292][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 13.531296][ T84] __kmalloc_noprof+0x443/0x760 [ 13.531298][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 13.531303][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 13.531306][ T84] alloc_buf.isra.0+0x4b/0x260 [ 13.531309][ T84] put_chars+0x1e1/0x2f0 [ 13.531311][ T84] ? __send_to_port+0x420/0x420 [ 13.531313][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 13.531316][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.531318][ T84] ? validate_chain+0x38b/0xc20 [ 13.531323][ T84] hvc_console_print+0x292/0x780 [ 13.531325][ T84] ? __lock_acquire+0x518/0xc20 [ 13.531326][ T84] ? __lock_acquire+0x518/0xc20 [ 13.531330][ T84] ? hvc_write+0x3a0/0x3a0 [ 13.531333][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.531336][ T84] ? lock_acquire+0x13c/0x160 [ 13.531339][ T84] console_emit_next_record+0x252/0x4f0 [ 13.531343][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 13.531347][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.531349][ T84] ? lock_acquire+0x13c/0x160 [ 13.531352][ T84] console_flush_one_record+0x46f/0x710 [ 13.531356][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 13.531358][ T84] ? __lock_acquire+0x518/0xc20 [ 13.531362][ T84] console_unlock+0xee/0x1f0 [ 13.531365][ T84] ? console_flush_one_record+0x710/0x710 [ 13.531366][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.531368][ T84] ? lock_acquire+0x60/0x160 [ 13.531371][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.531373][ T84] ? vprintk_emit+0x320/0x3e0 [ 13.531375][ T84] vprintk_emit+0x37c/0x3e0 [ 13.531379][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 13.531382][ T84] ? __lock_acquire+0x518/0xc20 [ 13.531385][ T84] _printk+0xc7/0x100 [ 13.531389][ T84] ? snapshot_read.cold+0x21/0x21 [ 13.531391][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.531394][ T84] ? __rwlock_init+0x150/0x150 [ 13.531397][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.531399][ T84] do_exit.cold+0x82/0x9c [ 13.531403][ T84] ? exit_notify+0x890/0x890 [ 13.531404][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 13.531407][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.531410][ T84] do_group_exit+0xb8/0x370 [ 13.531414][ T84] __x64_sys_exit_group+0x3c/0x50 [ 13.531416][ T84] x64_sys_call+0x1567/0x1570 [ 13.531418][ T84] do_syscall_64+0xff/0x530 [ 13.531421][ T84] ? exc_page_fault+0xee/0x100 [ 13.531424][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.531426][ T84] RIP: 0033:0x7f917665c1b8 [ 13.531428][ T84] Code: Unable to access opcode bytes at 0x7f917665c18e. [ 13.531430][ T84] RSP: 002b:00007fffa10d4428 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.531432][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f917665c1b8 [ 13.531434][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.531434][ T84] RBP: 00007fffa10d45b0 R08: 00005581a7a95f48 R09: 0000000000000000 [ 13.531439][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.531439][ T84] R13: 00007f9175eba050 R14: 00007f9176b8dd9e R15: 00005581a7a9d330 [ 13.531446][ T84]