[ 14.287703][ T88] (udev-worker) (88) used greatest stack depth: 22696 bytes left [ 14.287726][ T88] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.287729][ T88] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 88, name: (udev-worker) [ 14.287730][ T88] preempt_count: 2, expected: 0 [ 14.287732][ T88] RCU nest depth: 0, expected: 0 [ 14.287733][ T88] locks held by (udev-worker)/88: 5, last CPU#1: [ 14.287735][ T88] #0: ffffffffa2a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.287748][ T88] #1: ffffffffa2b69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.287754][ T88] #2: ffffffffa2b69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.287757][ T88] #3: ffffffffa2a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.287761][ T88] #4: ffffffffa2a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.287765][ T88] irq event stamp: 425930 [ 14.287766][ T88] hardirqs last enabled at (425929): [] __down_trylock_console_sem+0x86/0xa0 [ 14.287768][ T88] hardirqs last disabled at (425930): [] console_emit_next_record+0x3d4/0x4c0 [ 14.287770][ T88] softirqs last enabled at (425866): [] netlink_release+0x17b/0xcf0 [ 14.287774][ T88] softirqs last disabled at (425864): [] netlink_release+0xd2/0xcf0 [ 14.287776][ T88] Preemption disabled at: [ 14.287777][ T88] [<0000000000000000>] 0x0 [ 14.287784][ T88] CPU: 1 UID: 0 PID: 88 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.287788][ T88] Tainted: [W]=WARN [ 14.287789][ T88] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.287791][ T88] Call Trace: [ 14.287793][ T88] [ 14.287795][ T88] dump_stack_lvl+0x6f/0xa0 [ 14.287801][ T88] __might_resched.cold+0x1fe/0x2c1 [ 14.287805][ T88] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.287809][ T88] ? __kmalloc_noprof+0xdb/0x760 [ 14.287814][ T88] __kmalloc_noprof+0x443/0x760 [ 14.287816][ T88] ? alloc_buf.isra.0+0x4b/0x260 [ 14.287823][ T88] ? do_raw_spin_unlock+0x59/0x250 [ 14.287825][ T88] alloc_buf.isra.0+0x4b/0x260 [ 14.287829][ T88] put_chars+0x1e1/0x2f0 [ 14.287832][ T88] ? __send_to_port+0x420/0x420 [ 14.287834][ T88] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.287838][ T88] ? validate_chain+0x38b/0xc20 [ 14.287843][ T88] hvc_console_print+0x292/0x780 [ 14.287850][ T88] ? hvc_write+0x3a0/0x3a0 [ 14.287853][ T88] ? rcu_is_watching+0x16/0xd0 [ 14.287856][ T88] ? lock_acquire+0x13c/0x160 [ 14.287859][ T88] console_emit_next_record+0x22f/0x4c0 [ 14.287863][ T88] ? devkmsg_read+0x4b0/0x4b0 [ 14.287865][ T88] ? console_flush_one_record+0x106/0x710 [ 14.287868][ T88] ? rcu_is_watching+0x16/0xd0 [ 14.287870][ T88] ? lock_acquire+0x13c/0x160 [ 14.287873][ T88] console_flush_one_record+0x46f/0x710 [ 14.287877][ T88] ? console_emit_next_record+0x4c0/0x4c0 [ 14.287879][ T88] ? __lock_acquire+0x518/0xc20 [ 14.287884][ T88] console_unlock+0xee/0x1f0 [ 14.287887][ T88] ? console_flush_one_record+0x710/0x710 [ 14.287888][ T88] ? rcu_is_watching+0x16/0xd0 [ 14.287890][ T88] ? lock_acquire+0x60/0x160 [ 14.287894][ T88] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.287895][ T88] ? vprintk_emit+0x320/0x3e0 [ 14.287899][ T88] vprintk_emit+0x37c/0x3e0 [ 14.287902][ T88] ? wake_up_klogd_work_func+0x90/0x90 [ 14.287905][ T88] ? __lock_acquire+0x518/0xc20 [ 14.287909][ T88] _printk+0xc7/0x100 [ 14.287912][ T88] ? snapshot_read.cold+0x21/0x21 [ 14.287915][ T88] ? do_raw_spin_lock+0x131/0x280 [ 14.287918][ T88] ? __rwlock_init+0x150/0x150 [ 14.287921][ T88] ? do_raw_spin_lock+0x131/0x280 [ 14.287924][ T88] do_exit.cold+0x82/0x9c [ 14.287928][ T88] ? exit_notify+0x890/0x890 [ 14.287929][ T88] ? __lock_release.isra.0+0x69/0x1a0 [ 14.287932][ T88] ? rcu_is_watching+0x16/0xd0 [ 14.287936][ T88] do_group_exit+0xb8/0x370 [ 14.287939][ T88] __x64_sys_exit_group+0x3c/0x50 [ 14.287942][ T88] x64_sys_call+0x1567/0x1570 [ 14.287944][ T88] do_syscall_64+0xff/0x530 [ 14.287947][ T88] ? exc_page_fault+0xee/0x100 [ 14.287950][ T88] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.287952][ T88] RIP: 0033:0x7f2a75e9b1b8 [ 14.287955][ T88] Code: Unable to access opcode bytes at 0x7f2a75e9b18e. [ 14.287956][ T88] RSP: 002b:00007ffc32ab7ab8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.287959][ T88] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2a75e9b1b8 [ 14.287961][ T88] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.287961][ T88] RBP: 00007ffc32ab7c40 R08: 000056027b95f4c8 R09: 0000000000000000 [ 14.287962][ T88] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.287963][ T88] R13: 00007f2a756f9050 R14: 00007f2a763ccd9e R15: 000056027b8060d0 [ 14.287970][ T88]