[ 20.484571][ T197] (udev-worker) (197) used greatest stack depth: 22696 bytes left [ 20.484591][ T197] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 20.484593][ T197] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 197, name: (udev-worker) [ 20.484595][ T197] preempt_count: 2, expected: 0 [ 20.484596][ T197] RCU nest depth: 0, expected: 0 [ 20.484597][ T197] locks held by (udev-worker)/197: 5, last CPU#1: [ 20.484599][ T197] #0: ffffffffb1c167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 20.484611][ T197] #1: ffffffffb1d7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 20.484617][ T197] #2: ffffffffb1d7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 20.484622][ T197] #3: ffffffffb1c9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 20.484625][ T197] #4: ffffffffb1c9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 20.484630][ T197] irq event stamp: 896526 [ 20.484631][ T197] hardirqs last enabled at (896525): [] __down_trylock_console_sem+0x86/0xa0 [ 20.484634][ T197] hardirqs last disabled at (896526): [] console_emit_next_record+0x3d4/0x4c0 [ 20.484636][ T197] softirqs last enabled at (896452): [] netlink_release+0x17b/0xcf0 [ 20.484640][ T197] softirqs last disabled at (896450): [] netlink_release+0xd2/0xcf0 [ 20.484643][ T197] Preemption disabled at: [ 20.484644][ T197] [<0000000000000000>] 0x0 [ 20.484651][ T197] CPU: 1 UID: 0 PID: 197 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 20.484654][ T197] Tainted: [W]=WARN [ 20.484655][ T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.484657][ T197] Call Trace: [ 20.484659][ T197] [ 20.484660][ T197] dump_stack_lvl+0x6f/0xa0 [ 20.484667][ T197] __might_resched.cold+0x1fe/0x2c1 [ 20.484671][ T197] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 20.484675][ T197] ? __kmalloc_noprof+0xdb/0x760 [ 20.484680][ T197] __kmalloc_noprof+0x443/0x760 [ 20.484682][ T197] ? alloc_buf.isra.0+0x4b/0x260 [ 20.484689][ T197] ? do_raw_spin_unlock+0x59/0x250 [ 20.484691][ T197] alloc_buf.isra.0+0x4b/0x260 [ 20.484695][ T197] put_chars+0x1e1/0x2f0 [ 20.484698][ T197] ? __send_to_port+0x420/0x420 [ 20.484699][ T197] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 20.484703][ T197] ? validate_chain+0x38b/0xc20 [ 20.484708][ T197] hvc_console_print+0x292/0x780 [ 20.484716][ T197] ? hvc_write+0x3a0/0x3a0 [ 20.484719][ T197] ? rcu_is_watching+0x16/0xd0 [ 20.484721][ T197] ? lock_acquire+0x13c/0x160 [ 20.484725][ T197] console_emit_next_record+0x22f/0x4c0 [ 20.484729][ T197] ? devkmsg_read+0x4b0/0x4b0 [ 20.484731][ T197] ? console_flush_one_record+0x106/0x710 [ 20.484735][ T197] ? rcu_is_watching+0x16/0xd0 [ 20.484736][ T197] ? lock_acquire+0x13c/0x160 [ 20.484741][ T197] console_flush_one_record+0x46f/0x710 [ 20.484745][ T197] ? console_emit_next_record+0x4c0/0x4c0 [ 20.484747][ T197] ? __lock_acquire+0x518/0xc20 [ 20.484752][ T197] console_unlock+0xee/0x1f0 [ 20.484755][ T197] ? console_flush_one_record+0x710/0x710 [ 20.484758][ T197] ? rcu_is_watching+0x16/0xd0 [ 20.484759][ T197] ? lock_acquire+0xe0/0x160 [ 20.484763][ T197] ? __down_trylock_console_sem+0x5e/0xa0 [ 20.484765][ T197] ? vprintk_emit+0x320/0x3e0 [ 20.484768][ T197] vprintk_emit+0x37c/0x3e0 [ 20.484771][ T197] ? wake_up_klogd_work_func+0x90/0x90 [ 20.484774][ T197] ? __lock_acquire+0x518/0xc20 [ 20.484778][ T197] _printk+0xc7/0x100 [ 20.484782][ T197] ? snapshot_read.cold+0x21/0x21 [ 20.484785][ T197] ? do_raw_spin_lock+0x131/0x280 [ 20.484787][ T197] ? __rwlock_init+0x150/0x150 [ 20.484792][ T197] ? do_raw_spin_lock+0x131/0x280 [ 20.484794][ T197] do_exit.cold+0x82/0x9c [ 20.484798][ T197] ? exit_notify+0x890/0x890 [ 20.484800][ T197] ? __lock_release.isra.0+0x69/0x1a0 [ 20.484803][ T197] ? rcu_is_watching+0x16/0xd0 [ 20.484806][ T197] do_group_exit+0xb8/0x370 [ 20.484809][ T197] __x64_sys_exit_group+0x3c/0x50 [ 20.484811][ T197] x64_sys_call+0x1567/0x1570 [ 20.484814][ T197] do_syscall_64+0xff/0x530 [ 20.484818][ T197] ? exc_page_fault+0xee/0x100 [ 20.484821][ T197] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 20.484823][ T197] RIP: 0033:0x7f5bea1af1b8 [ 20.484826][ T197] Code: Unable to access opcode bytes at 0x7f5bea1af18e. [ 20.484827][ T197] RSP: 002b:00007ffce5eb6a18 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 20.484829][ T197] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5bea1af1b8 [ 20.484831][ T197] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 20.484832][ T197] RBP: 00007ffce5eb6ba0 R08: 000055d01d6d3938 R09: 0000000000000000 [ 20.484833][ T197] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 20.484833][ T197] R13: 00007f5be9a0d050 R14: 00007f5bea6e0d9e R15: 000055d01d547c10 [ 20.484841][ T197]