[ 38.912721][ T203] (udev-worker) (203) used greatest stack depth: 22696 bytes left [ 38.912741][ T203] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 38.912744][ T203] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 203, name: (udev-worker) [ 38.912745][ T203] preempt_count: 2, expected: 0 [ 38.912746][ T203] RCU nest depth: 0, expected: 0 [ 38.912747][ T203] locks held by (udev-worker)/203: 5, last CPU#1: [ 38.912749][ T203] #0: ffffffffaf4167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 38.912760][ T203] #1: ffffffffaf57ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 38.912765][ T203] #2: ffffffffaf57de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 38.912770][ T203] #3: ffffffffaf49d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 38.912774][ T203] #4: ffffffffaf49d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 38.912778][ T203] irq event stamp: 5065518 [ 38.912779][ T203] hardirqs last enabled at (5065517): [] __down_trylock_console_sem+0x86/0xa0 [ 38.912782][ T203] hardirqs last disabled at (5065518): [] console_emit_next_record+0x3d4/0x4c0 [ 38.912784][ T203] softirqs last enabled at (5065448): [] netlink_release+0x17b/0xcf0 [ 38.912788][ T203] softirqs last disabled at (5065446): [] netlink_release+0xd2/0xcf0 [ 38.912791][ T203] Preemption disabled at: [ 38.912792][ T203] [<0000000000000000>] 0x0 [ 38.912799][ T203] CPU: 1 UID: 0 PID: 203 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 38.912802][ T203] Tainted: [W]=WARN [ 38.912803][ T203] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 38.912805][ T203] Call Trace: [ 38.912807][ T203] [ 38.912808][ T203] dump_stack_lvl+0x6f/0xa0 [ 38.912815][ T203] __might_resched.cold+0x1fe/0x2c1 [ 38.912819][ T203] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 38.912823][ T203] ? __kmalloc_noprof+0xdb/0x760 [ 38.912828][ T203] __kmalloc_noprof+0x443/0x760 [ 38.912830][ T203] ? alloc_buf.isra.0+0x4b/0x260 [ 38.912836][ T203] ? do_raw_spin_unlock+0x59/0x250 [ 38.912839][ T203] alloc_buf.isra.0+0x4b/0x260 [ 38.912843][ T203] put_chars+0x1e1/0x2f0 [ 38.912845][ T203] ? __send_to_port+0x420/0x420 [ 38.912847][ T203] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 38.912851][ T203] ? validate_chain+0x38b/0xc20 [ 38.912856][ T203] hvc_console_print+0x292/0x780 [ 38.912864][ T203] ? hvc_write+0x3a0/0x3a0 [ 38.912867][ T203] ? rcu_is_watching+0x16/0xd0 [ 38.912869][ T203] ? lock_acquire+0x13c/0x160 [ 38.912873][ T203] console_emit_next_record+0x22f/0x4c0 [ 38.912877][ T203] ? devkmsg_read+0x4b0/0x4b0 [ 38.912879][ T203] ? console_flush_one_record+0x106/0x710 [ 38.912882][ T203] ? rcu_is_watching+0x16/0xd0 [ 38.912884][ T203] ? lock_acquire+0x13c/0x160 [ 38.912888][ T203] console_flush_one_record+0x46f/0x710 [ 38.912892][ T203] ? console_emit_next_record+0x4c0/0x4c0 [ 38.912894][ T203] ? __lock_acquire+0x518/0xc20 [ 38.912900][ T203] console_unlock+0xee/0x1f0 [ 38.912903][ T203] ? console_flush_one_record+0x710/0x710 [ 38.912905][ T203] ? rcu_is_watching+0x16/0xd0 [ 38.912906][ T203] ? lock_acquire+0xe0/0x160 [ 38.912910][ T203] ? __down_trylock_console_sem+0x5e/0xa0 [ 38.912912][ T203] ? vprintk_emit+0x320/0x3e0 [ 38.912915][ T203] vprintk_emit+0x37c/0x3e0 [ 38.912918][ T203] ? wake_up_klogd_work_func+0x90/0x90 [ 38.912921][ T203] ? __lock_acquire+0x518/0xc20 [ 38.912925][ T203] _printk+0xc7/0x100 [ 38.912929][ T203] ? snapshot_read.cold+0x21/0x21 [ 38.912931][ T203] ? do_raw_spin_lock+0x131/0x280 [ 38.912934][ T203] ? __rwlock_init+0x150/0x150 [ 38.912938][ T203] ? do_raw_spin_lock+0x131/0x280 [ 38.912941][ T203] do_exit.cold+0x82/0x9c [ 38.912945][ T203] ? exit_notify+0x890/0x890 [ 38.912946][ T203] ? __lock_release.isra.0+0x69/0x1a0 [ 38.912949][ T203] ? rcu_is_watching+0x16/0xd0 [ 38.912953][ T203] do_group_exit+0xb8/0x370 [ 38.912955][ T203] __x64_sys_exit_group+0x3c/0x50 [ 38.912957][ T203] x64_sys_call+0x1567/0x1570 [ 38.912960][ T203] do_syscall_64+0xff/0x530 [ 38.912964][ T203] ? exc_page_fault+0xee/0x100 [ 38.912967][ T203] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 38.912969][ T203] RIP: 0033:0x7f597c9091b8 [ 38.912971][ T203] Code: Unable to access opcode bytes at 0x7f597c90918e. [ 38.912972][ T203] RSP: 002b:00007ffef180a5c8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 38.912975][ T203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f597c9091b8 [ 38.912976][ T203] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 38.912977][ T203] RBP: 00007ffef180a750 R08: 000055ade0b54be8 R09: 0000000000000000 [ 38.912978][ T203] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 38.912979][ T203] R13: 00007f597c167050 R14: 00007f597ce3ad9e R15: 000055ade09c8060 [ 38.912986][ T203]