[ 12.430263][ T92] (udev-worker) (92) used greatest stack depth: 22696 bytes left [ 12.430280][ T92] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.430282][ T92] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 92, name: (udev-worker) [ 12.430284][ T92] preempt_count: 2, expected: 0 [ 12.430284][ T92] RCU nest depth: 0, expected: 0 [ 12.430286][ T92] locks held by (udev-worker)/92: 5, last CPU#0: [ 12.430288][ T92] #0: ffffffffbb0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.430299][ T92] #1: ffffffffbb199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.430305][ T92] #2: ffffffffbb199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.430309][ T92] #3: ffffffffbb089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.430313][ T92] #4: ffffffffbb089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.430317][ T92] irq event stamp: 365408 [ 12.430318][ T92] hardirqs last enabled at (365407): [] __down_trylock_console_sem+0x86/0xa0 [ 12.430320][ T92] hardirqs last disabled at (365408): [] console_emit_next_record+0x3f8/0x4f0 [ 12.430322][ T92] softirqs last enabled at (365344): [] netlink_release+0x17b/0xcf0 [ 12.430327][ T92] softirqs last disabled at (365342): [] netlink_release+0xd2/0xcf0 [ 12.430329][ T92] Preemption disabled at: [ 12.430330][ T92] [<0000000000000000>] 0x0 [ 12.430337][ T92] CPU: 0 UID: 0 PID: 92 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.430340][ T92] Tainted: [W]=WARN [ 12.430341][ T92] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.430343][ T92] Call Trace: [ 12.430344][ T92] [ 12.430345][ T92] dump_stack_lvl+0x6f/0xa0 [ 12.430352][ T92] __might_resched.cold+0x1fe/0x2c1 [ 12.430356][ T92] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.430360][ T92] ? __kmalloc_noprof+0xdb/0x760 [ 12.430365][ T92] __kmalloc_noprof+0x443/0x760 [ 12.430368][ T92] ? alloc_buf.isra.0+0x4b/0x260 [ 12.430375][ T92] ? do_raw_spin_unlock+0x59/0x250 [ 12.430377][ T92] alloc_buf.isra.0+0x4b/0x260 [ 12.430381][ T92] put_chars+0x1e1/0x2f0 [ 12.430384][ T92] ? __send_to_port+0x420/0x420 [ 12.430387][ T92] ? printk_get_next_message+0x2fe/0x7d0 [ 12.430390][ T92] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.430393][ T92] ? validate_chain+0x38b/0xc20 [ 12.430397][ T92] hvc_console_print+0x292/0x780 [ 12.430401][ T92] ? __lock_acquire+0x518/0xc20 [ 12.430403][ T92] ? __lock_acquire+0x518/0xc20 [ 12.430408][ T92] ? hvc_write+0x3a0/0x3a0 [ 12.430411][ T92] ? rcu_is_watching+0x16/0xd0 [ 12.430415][ T92] ? lock_acquire+0x13c/0x160 [ 12.430419][ T92] console_emit_next_record+0x252/0x4f0 [ 12.430423][ T92] ? devkmsg_read+0x4e0/0x4e0 [ 12.430427][ T92] ? rcu_is_watching+0x16/0xd0 [ 12.430429][ T92] ? lock_acquire+0x13c/0x160 [ 12.430433][ T92] console_flush_one_record+0x46f/0x710 [ 12.430437][ T92] ? console_emit_next_record+0x4f0/0x4f0 [ 12.430439][ T92] ? __lock_acquire+0x518/0xc20 [ 12.430445][ T92] console_unlock+0xee/0x1f0 [ 12.430448][ T92] ? console_flush_one_record+0x710/0x710 [ 12.430450][ T92] ? rcu_is_watching+0x16/0xd0 [ 12.430452][ T92] ? lock_acquire+0xa0/0x160 [ 12.430456][ T92] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.430458][ T92] ? vprintk_emit+0x320/0x3e0 [ 12.430461][ T92] vprintk_emit+0x37c/0x3e0 [ 12.430465][ T92] ? wake_up_klogd_work_func+0x90/0x90 [ 12.430469][ T92] ? __lock_acquire+0x518/0xc20 [ 12.430472][ T92] _printk+0xc7/0x100 [ 12.430476][ T92] ? snapshot_read.cold+0x21/0x21 [ 12.430479][ T92] ? do_raw_spin_lock+0x131/0x280 [ 12.430484][ T92] ? __rwlock_init+0x150/0x150 [ 12.430488][ T92] ? do_raw_spin_lock+0x131/0x280 [ 12.430491][ T92] do_exit.cold+0x82/0x9c [ 12.430494][ T92] ? exit_notify+0x890/0x890 [ 12.430496][ T92] ? __lock_release.isra.0+0x69/0x1a0 [ 12.430498][ T92] ? rcu_is_watching+0x16/0xd0 [ 12.430503][ T92] do_group_exit+0xb8/0x370 [ 12.430505][ T92] __x64_sys_exit_group+0x3c/0x50 [ 12.430507][ T92] x64_sys_call+0x1567/0x1570 [ 12.430509][ T92] do_syscall_64+0xff/0x530 [ 12.430513][ T92] ? exc_page_fault+0xee/0x100 [ 12.430516][ T92] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.430518][ T92] RIP: 0033:0x7f83c4c2d1b8 [ 12.430520][ T92] Code: Unable to access opcode bytes at 0x7f83c4c2d18e. [ 12.430522][ T92] RSP: 002b:00007ffd901ca088 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.430524][ T92] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f83c4c2d1b8 [ 12.430525][ T92] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.430526][ T92] RBP: 00007ffd901ca210 R08: 0000560491a44938 R09: 0000000000000000 [ 12.430527][ T92] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.430528][ T92] R13: 00007f83c448b050 R14: 00007f83c515ed9e R15: 00005604918c6220 [ 12.430534][ T92]