[ 12.578371][ T83] (udev-worker) (83) used greatest stack depth: 22696 bytes left [ 12.578392][ T83] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.578395][ T83] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 83, name: (udev-worker) [ 12.578396][ T83] preempt_count: 2, expected: 0 [ 12.578397][ T83] RCU nest depth: 0, expected: 0 [ 12.578398][ T83] locks held by (udev-worker)/83: 5, last CPU#0: [ 12.578401][ T83] #0: ffffffffa2c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.578413][ T83] #1: ffffffffa2d99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.578418][ T83] #2: ffffffffa2d99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.578422][ T83] #3: ffffffffa2c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.578425][ T83] #4: ffffffffa2c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.578429][ T83] irq event stamp: 462546 [ 12.578430][ T83] hardirqs last enabled at (462545): [] __down_trylock_console_sem+0x86/0xa0 [ 12.578432][ T83] hardirqs last disabled at (462546): [] console_emit_next_record+0x3f8/0x4f0 [ 12.578434][ T83] softirqs last enabled at (462482): [] netlink_release+0x17b/0xcf0 [ 12.578438][ T83] softirqs last disabled at (462480): [] netlink_release+0xd2/0xcf0 [ 12.578441][ T83] Preemption disabled at: [ 12.578442][ T83] [<0000000000000000>] 0x0 [ 12.578449][ T83] CPU: 0 UID: 0 PID: 83 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.578452][ T83] Tainted: [W]=WARN [ 12.578453][ T83] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.578454][ T83] Call Trace: [ 12.578456][ T83] [ 12.578457][ T83] dump_stack_lvl+0x6f/0xa0 [ 12.578463][ T83] __might_resched.cold+0x1fe/0x2c1 [ 12.578468][ T83] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.578471][ T83] ? __kmalloc_noprof+0xdb/0x760 [ 12.578476][ T83] __kmalloc_noprof+0x443/0x760 [ 12.578478][ T83] ? alloc_buf.isra.0+0x4b/0x260 [ 12.578484][ T83] ? do_raw_spin_unlock+0x59/0x250 [ 12.578486][ T83] alloc_buf.isra.0+0x4b/0x260 [ 12.578489][ T83] put_chars+0x1e1/0x2f0 [ 12.578492][ T83] ? __send_to_port+0x420/0x420 [ 12.578493][ T83] ? printk_get_next_message+0x2fe/0x7d0 [ 12.578497][ T83] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.578500][ T83] ? validate_chain+0x38b/0xc20 [ 12.578504][ T83] hvc_console_print+0x292/0x780 [ 12.578507][ T83] ? __lock_acquire+0x518/0xc20 [ 12.578508][ T83] ? __lock_acquire+0x518/0xc20 [ 12.578512][ T83] ? hvc_write+0x3a0/0x3a0 [ 12.578515][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.578520][ T83] ? lock_acquire+0x13c/0x160 [ 12.578523][ T83] console_emit_next_record+0x252/0x4f0 [ 12.578527][ T83] ? devkmsg_read+0x4e0/0x4e0 [ 12.578531][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.578533][ T83] ? lock_acquire+0x13c/0x160 [ 12.578536][ T83] console_flush_one_record+0x46f/0x710 [ 12.578540][ T83] ? console_emit_next_record+0x4f0/0x4f0 [ 12.578542][ T83] ? __lock_acquire+0x518/0xc20 [ 12.578546][ T83] console_unlock+0xee/0x1f0 [ 12.578549][ T83] ? console_flush_one_record+0x710/0x710 [ 12.578550][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.578552][ T83] ? lock_acquire+0x60/0x160 [ 12.578556][ T83] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.578557][ T83] ? vprintk_emit+0x320/0x3e0 [ 12.578560][ T83] vprintk_emit+0x37c/0x3e0 [ 12.578564][ T83] ? wake_up_klogd_work_func+0x90/0x90 [ 12.578567][ T83] ? __lock_acquire+0x518/0xc20 [ 12.578570][ T83] _printk+0xc7/0x100 [ 12.578574][ T83] ? snapshot_read.cold+0x21/0x21 [ 12.578576][ T83] ? do_raw_spin_lock+0x131/0x280 [ 12.578579][ T83] ? __rwlock_init+0x150/0x150 [ 12.578582][ T83] ? do_raw_spin_lock+0x131/0x280 [ 12.578584][ T83] do_exit.cold+0x82/0x9c [ 12.578588][ T83] ? exit_notify+0x890/0x890 [ 12.578590][ T83] ? __lock_release.isra.0+0x69/0x1a0 [ 12.578592][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.578596][ T83] do_group_exit+0xb8/0x370 [ 12.578599][ T83] __x64_sys_exit_group+0x3c/0x50 [ 12.578602][ T83] x64_sys_call+0x1567/0x1570 [ 12.578604][ T83] do_syscall_64+0xff/0x530 [ 12.578607][ T83] ? exc_page_fault+0xee/0x100 [ 12.578610][ T83] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.578612][ T83] RIP: 0033:0x7f150c9de1b8 [ 12.578614][ T83] Code: Unable to access opcode bytes at 0x7f150c9de18e. [ 12.578616][ T83] RSP: 002b:00007ffc02847bb8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.578618][ T83] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f150c9de1b8 [ 12.578619][ T83] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.578620][ T83] RBP: 00007ffc02847d40 R08: 000055ef502355d8 R09: 0000000000000000 [ 12.578621][ T83] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.578622][ T83] R13: 00007f150c23c050 R14: 00007f150cf0fd9e R15: 000055ef50236f40 [ 12.578628][ T83]