[ 16.241531][ T182] (udev-worker) (182) used greatest stack depth: 22696 bytes left [ 16.241551][ T182] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.241553][ T182] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 182, name: (udev-worker) [ 16.241555][ T182] preempt_count: 2, expected: 0 [ 16.241556][ T182] RCU nest depth: 0, expected: 0 [ 16.241557][ T182] locks held by (udev-worker)/182: 5, last CPU#2: [ 16.241559][ T182] #0: ffffffffaec027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.241572][ T182] #1: ffffffffaed99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.241578][ T182] #2: ffffffffaed99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.241583][ T182] #3: ffffffffaec89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.241588][ T182] #4: ffffffffaec89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.241593][ T182] irq event stamp: 153960 [ 16.241594][ T182] hardirqs last enabled at (153959): [] __down_trylock_console_sem+0x86/0xa0 [ 16.241598][ T182] hardirqs last disabled at (153960): [] console_emit_next_record+0x3f8/0x4f0 [ 16.241600][ T182] softirqs last enabled at (153894): [] netlink_release+0x17b/0xcf0 [ 16.241605][ T182] softirqs last disabled at (153892): [] netlink_release+0xd2/0xcf0 [ 16.241608][ T182] Preemption disabled at: [ 16.241609][ T182] [<0000000000000000>] 0x0 [ 16.241616][ T182] CPU: 2 UID: 0 PID: 182 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.241620][ T182] Tainted: [W]=WARN [ 16.241621][ T182] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.241623][ T182] Call Trace: [ 16.241625][ T182] [ 16.241627][ T182] dump_stack_lvl+0x6f/0xa0 [ 16.241634][ T182] __might_resched.cold+0x1fe/0x2c1 [ 16.241640][ T182] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.241645][ T182] ? __kmalloc_noprof+0xdb/0x760 [ 16.241651][ T182] __kmalloc_noprof+0x443/0x760 [ 16.241654][ T182] ? alloc_buf.isra.0+0x4b/0x260 [ 16.241662][ T182] ? do_raw_spin_unlock+0x59/0x250 [ 16.241665][ T182] alloc_buf.isra.0+0x4b/0x260 [ 16.241670][ T182] put_chars+0x1e1/0x2f0 [ 16.241674][ T182] ? __send_to_port+0x420/0x420 [ 16.241676][ T182] ? printk_get_next_message+0x2fe/0x7d0 [ 16.241681][ T182] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.241685][ T182] ? validate_chain+0x38b/0xc20 [ 16.241690][ T182] hvc_console_print+0x292/0x780 [ 16.241694][ T182] ? __lock_acquire+0x518/0xc20 [ 16.241696][ T182] ? __lock_acquire+0x518/0xc20 [ 16.241703][ T182] ? hvc_write+0x3a0/0x3a0 [ 16.241708][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.241710][ T182] ? lock_acquire+0x13c/0x160 [ 16.241715][ T182] console_emit_next_record+0x252/0x4f0 [ 16.241721][ T182] ? devkmsg_read+0x4e0/0x4e0 [ 16.241726][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.241729][ T182] ? lock_acquire+0x13c/0x160 [ 16.241733][ T182] console_flush_one_record+0x46f/0x710 [ 16.241739][ T182] ? console_emit_next_record+0x4f0/0x4f0 [ 16.241741][ T182] ? __lock_acquire+0x518/0xc20 [ 16.241748][ T182] console_unlock+0xee/0x1f0 [ 16.241751][ T182] ? console_flush_one_record+0x710/0x710 [ 16.241754][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.241756][ T182] ? lock_acquire+0x60/0x160 [ 16.241761][ T182] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.241763][ T182] ? vprintk_emit+0x320/0x3e0 [ 16.241767][ T182] vprintk_emit+0x37c/0x3e0 [ 16.241771][ T182] ? wake_up_klogd_work_func+0x90/0x90 [ 16.241774][ T182] ? __lock_acquire+0x518/0xc20 [ 16.241779][ T182] _printk+0xc7/0x100 [ 16.241783][ T182] ? snapshot_read.cold+0x21/0x21 [ 16.241786][ T182] ? do_raw_spin_lock+0x131/0x280 [ 16.241790][ T182] ? __rwlock_init+0x150/0x150 [ 16.241795][ T182] ? do_raw_spin_lock+0x131/0x280 [ 16.241799][ T182] do_exit.cold+0x82/0x9c [ 16.241804][ T182] ? exit_notify+0x890/0x890 [ 16.241805][ T182] ? __lock_release.isra.0+0x69/0x1a0 [ 16.241809][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.241813][ T182] do_group_exit+0xb8/0x370 [ 16.241817][ T182] __x64_sys_exit_group+0x3c/0x50 [ 16.241819][ T182] x64_sys_call+0x1567/0x1570 [ 16.241821][ T182] do_syscall_64+0xff/0x530 [ 16.241826][ T182] ? irq_exit_rcu+0x1a/0x30 [ 16.241829][ T182] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.241832][ T182] RIP: 0033:0x7f5c5b5a51b8 [ 16.241835][ T182] Code: Unable to access opcode bytes at 0x7f5c5b5a518e. [ 16.241836][ T182] RSP: 002b:00007ffd4f085bf8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.241839][ T182] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5c5b5a51b8 [ 16.241840][ T182] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.241841][ T182] RBP: 00007ffd4f085d80 R08: 000055f952164b98 R09: 0000000000000000 [ 16.241842][ T182] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.241843][ T182] R13: 00007f5c5ae03050 R14: 00007f5c5bad6d9e R15: 000055f951fd7dc0 [ 16.241851][ T182]