[ 14.130399][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 14.130419][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.130422][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 14.130425][ T85] preempt_count: 2, expected: 0 [ 14.130426][ T85] RCU nest depth: 0, expected: 0 [ 14.130427][ T85] locks held by (udev-worker)/85: 5, last CPU#0: [ 14.130431][ T85] #0: ffffffff96a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.130446][ T85] #1: ffffffff96b69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.130454][ T85] #2: ffffffff96b69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.130458][ T85] #3: ffffffff96a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.130461][ T85] #4: ffffffff96a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.130465][ T85] irq event stamp: 467610 [ 14.130466][ T85] hardirqs last enabled at (467609): [] __down_trylock_console_sem+0x86/0xa0 [ 14.130469][ T85] hardirqs last disabled at (467610): [] console_emit_next_record+0x3d4/0x4c0 [ 14.130470][ T85] softirqs last enabled at (467546): [] netlink_release+0x17b/0xcf0 [ 14.130474][ T85] softirqs last disabled at (467544): [] netlink_release+0xd2/0xcf0 [ 14.130477][ T85] Preemption disabled at: [ 14.130478][ T85] [<0000000000000000>] 0x0 [ 14.130484][ T85] CPU: 0 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.130488][ T85] Tainted: [W]=WARN [ 14.130489][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.130490][ T85] Call Trace: [ 14.130492][ T85] [ 14.130494][ T85] dump_stack_lvl+0x6f/0xa0 [ 14.130499][ T85] __might_resched.cold+0x1fe/0x2c1 [ 14.130504][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.130508][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 14.130513][ T85] __kmalloc_noprof+0x443/0x760 [ 14.130515][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 14.130521][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 14.130524][ T85] alloc_buf.isra.0+0x4b/0x260 [ 14.130527][ T85] put_chars+0x1e1/0x2f0 [ 14.130530][ T85] ? __send_to_port+0x420/0x420 [ 14.130532][ T85] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.130537][ T85] ? validate_chain+0x38b/0xc20 [ 14.130549][ T85] hvc_console_print+0x292/0x780 [ 14.130556][ T85] ? hvc_write+0x3a0/0x3a0 [ 14.130559][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.130561][ T85] ? lock_acquire+0x13c/0x160 [ 14.130565][ T85] console_emit_next_record+0x22f/0x4c0 [ 14.130569][ T85] ? devkmsg_read+0x4b0/0x4b0 [ 14.130570][ T85] ? console_flush_one_record+0x106/0x710 [ 14.130573][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.130576][ T85] ? lock_acquire+0x13c/0x160 [ 14.130579][ T85] console_flush_one_record+0x46f/0x710 [ 14.130583][ T85] ? console_emit_next_record+0x4c0/0x4c0 [ 14.130585][ T85] ? __lock_acquire+0x518/0xc20 [ 14.130590][ T85] console_unlock+0xee/0x1f0 [ 14.130592][ T85] ? console_flush_one_record+0x710/0x710 [ 14.130594][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.130596][ T85] ? lock_acquire+0x60/0x160 [ 14.130600][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.130601][ T85] ? vprintk_emit+0x320/0x3e0 [ 14.130604][ T85] vprintk_emit+0x37c/0x3e0 [ 14.130608][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 14.130611][ T85] ? __lock_acquire+0x518/0xc20 [ 14.130615][ T85] _printk+0xc7/0x100 [ 14.130618][ T85] ? snapshot_read.cold+0x21/0x21 [ 14.130621][ T85] ? do_raw_spin_lock+0x131/0x280 [ 14.130624][ T85] ? __rwlock_init+0x150/0x150 [ 14.130627][ T85] ? do_raw_spin_lock+0x131/0x280 [ 14.130630][ T85] do_exit.cold+0x82/0x9c [ 14.130634][ T85] ? exit_notify+0x890/0x890 [ 14.130636][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 14.130638][ T85] ? rcu_is_watching+0x16/0xd0 [ 14.130642][ T85] do_group_exit+0xb8/0x370 [ 14.130645][ T85] __x64_sys_exit_group+0x3c/0x50 [ 14.130648][ T85] x64_sys_call+0x1567/0x1570 [ 14.130650][ T85] do_syscall_64+0xff/0x530 [ 14.130657][ T85] ? irq_exit_rcu+0x1a/0x30 [ 14.130661][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.130663][ T85] RIP: 0033:0x7f7efec2b1b8 [ 14.130666][ T85] Code: Unable to access opcode bytes at 0x7f7efec2b18e. [ 14.130667][ T85] RSP: 002b:00007fff51b426b8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.130669][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7efec2b1b8 [ 14.130671][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.130672][ T85] RBP: 00007fff51b42840 R08: 0000565334ed84b8 R09: 0000000000000000 [ 14.130673][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.130673][ T85] R13: 00007f7efe489050 R14: 00007f7eff15cd9e R15: 0000565334d652f0 [ 14.130680][ T85]