[ 14.763518][ T92] (udev-worker) (92) used greatest stack depth: 22696 bytes left [ 14.763538][ T92] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.763540][ T92] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 92, name: (udev-worker) [ 14.763542][ T92] preempt_count: 2, expected: 0 [ 14.763543][ T92] RCU nest depth: 0, expected: 0 [ 14.763544][ T92] locks held by (udev-worker)/92: 5, last CPU#1: [ 14.763546][ T92] #0: ffffffffb22027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.763566][ T92] #1: ffffffffb2399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.763572][ T92] #2: ffffffffb2399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.763576][ T92] #3: ffffffffb2289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.763579][ T92] #4: ffffffffb2289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.763583][ T92] irq event stamp: 374646 [ 14.763584][ T92] hardirqs last enabled at (374645): [] __down_trylock_console_sem+0x86/0xa0 [ 14.763586][ T92] hardirqs last disabled at (374646): [] console_emit_next_record+0x3f8/0x4f0 [ 14.763588][ T92] softirqs last enabled at (374640): [] handle_softirqs+0x67c/0x900 [ 14.763590][ T92] softirqs last disabled at (374635): [] __irq_exit_rcu+0x145/0x1c0 [ 14.763593][ T92] Preemption disabled at: [ 14.763593][ T92] [<0000000000000000>] 0x0 [ 14.763601][ T92] CPU: 1 UID: 0 PID: 92 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.763604][ T92] Tainted: [W]=WARN [ 14.763605][ T92] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.763607][ T92] Call Trace: [ 14.763609][ T92] [ 14.763611][ T92] dump_stack_lvl+0x6f/0xa0 [ 14.763617][ T92] __might_resched.cold+0x1fe/0x2c1 [ 14.763621][ T92] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.763625][ T92] ? __kmalloc_noprof+0xdb/0x760 [ 14.763629][ T92] __kmalloc_noprof+0x443/0x760 [ 14.763631][ T92] ? alloc_buf.isra.0+0x4b/0x260 [ 14.763637][ T92] ? do_raw_spin_unlock+0x59/0x250 [ 14.763639][ T92] alloc_buf.isra.0+0x4b/0x260 [ 14.763642][ T92] put_chars+0x1e1/0x2f0 [ 14.763644][ T92] ? __send_to_port+0x420/0x420 [ 14.763646][ T92] ? printk_get_next_message+0x2fe/0x7d0 [ 14.763649][ T92] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.763652][ T92] ? validate_chain+0x38b/0xc20 [ 14.763656][ T92] hvc_console_print+0x292/0x780 [ 14.763659][ T92] ? __lock_acquire+0x518/0xc20 [ 14.763660][ T92] ? __lock_acquire+0x518/0xc20 [ 14.763664][ T92] ? hvc_write+0x3a0/0x3a0 [ 14.763667][ T92] ? rcu_is_watching+0x16/0xd0 [ 14.763669][ T92] ? lock_acquire+0x13c/0x160 [ 14.763673][ T92] console_emit_next_record+0x252/0x4f0 [ 14.763676][ T92] ? devkmsg_read+0x4e0/0x4e0 [ 14.763680][ T92] ? rcu_is_watching+0x16/0xd0 [ 14.763682][ T92] ? lock_acquire+0x13c/0x160 [ 14.763686][ T92] console_flush_one_record+0x46f/0x710 [ 14.763690][ T92] ? console_emit_next_record+0x4f0/0x4f0 [ 14.763691][ T92] ? __lock_acquire+0x518/0xc20 [ 14.763696][ T92] console_unlock+0xee/0x1f0 [ 14.763698][ T92] ? console_flush_one_record+0x710/0x710 [ 14.763700][ T92] ? rcu_is_watching+0x16/0xd0 [ 14.763702][ T92] ? lock_acquire+0x60/0x160 [ 14.763705][ T92] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.763707][ T92] ? vprintk_emit+0x320/0x3e0 [ 14.763710][ T92] vprintk_emit+0x37c/0x3e0 [ 14.763713][ T92] ? wake_up_klogd_work_func+0x90/0x90 [ 14.763718][ T92] _printk+0xc7/0x100 [ 14.763722][ T92] ? snapshot_read.cold+0x21/0x21 [ 14.763723][ T92] ? lock_acquire.part.0+0x112/0x280 [ 14.763725][ T92] ? do_raw_spin_lock+0x131/0x280 [ 14.763728][ T92] ? __rwlock_init+0x150/0x150 [ 14.763731][ T92] ? do_raw_spin_lock+0x131/0x280 [ 14.763733][ T92] do_exit.cold+0x82/0x9c [ 14.763737][ T92] ? exit_notify+0x890/0x890 [ 14.763739][ T92] ? __lock_release.isra.0+0x69/0x1a0 [ 14.763741][ T92] ? rcu_is_watching+0x16/0xd0 [ 14.763745][ T92] do_group_exit+0xb8/0x370 [ 14.763748][ T92] __x64_sys_exit_group+0x3c/0x50 [ 14.763750][ T92] x64_sys_call+0x1567/0x1570 [ 14.763752][ T92] do_syscall_64+0xff/0x530 [ 14.763756][ T92] ? irq_exit_rcu+0x1a/0x30 [ 14.763759][ T92] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.763761][ T92] RIP: 0033:0x7f8c744f21b8 [ 14.763764][ T92] Code: Unable to access opcode bytes at 0x7f8c744f218e. [ 14.763765][ T92] RSP: 002b:00007ffdecbb9ea8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.763767][ T92] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c744f21b8 [ 14.763768][ T92] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.763769][ T92] RBP: 00007ffdecbba030 R08: 000056113384bac8 R09: 0000000000000000 [ 14.763770][ T92] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.763771][ T92] R13: 00007f8c73d50050 R14: 00007f8c74a23d9e R15: 00005611336f1ad0 [ 14.763777][ T92]