[ 15.807484][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 15.807504][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.807506][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 15.807508][ T91] preempt_count: 2, expected: 0 [ 15.807509][ T91] RCU nest depth: 0, expected: 0 [ 15.807510][ T91] locks held by (udev-worker)/91: 5, last CPU#1: [ 15.807512][ T91] #0: ffffffff878027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.807526][ T91] #1: ffffffff87969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.807531][ T91] #2: ffffffff87969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.807535][ T91] #3: ffffffff87889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.807539][ T91] #4: ffffffff87889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 15.807543][ T91] irq event stamp: 547100 [ 15.807544][ T91] hardirqs last enabled at (547099): [] __down_trylock_console_sem+0x86/0xa0 [ 15.807547][ T91] hardirqs last disabled at (547100): [] console_emit_next_record+0x3d4/0x4c0 [ 15.807549][ T91] softirqs last enabled at (547036): [] netlink_release+0x17b/0xcf0 [ 15.807553][ T91] softirqs last disabled at (547034): [] netlink_release+0xd2/0xcf0 [ 15.807555][ T91] Preemption disabled at: [ 15.807556][ T91] [<0000000000000000>] 0x0 [ 15.807563][ T91] CPU: 1 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.807567][ T91] Tainted: [W]=WARN [ 15.807568][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.807569][ T91] Call Trace: [ 15.807571][ T91] [ 15.807573][ T91] dump_stack_lvl+0x6f/0xa0 [ 15.807579][ T91] __might_resched.cold+0x1fe/0x2c1 [ 15.807584][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.807588][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 15.807592][ T91] __kmalloc_noprof+0x443/0x760 [ 15.807594][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 15.807601][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 15.807603][ T91] alloc_buf.isra.0+0x4b/0x260 [ 15.807607][ T91] put_chars+0x1e1/0x2f0 [ 15.807610][ T91] ? __send_to_port+0x420/0x420 [ 15.807612][ T91] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 15.807617][ T91] ? validate_chain+0x38b/0xc20 [ 15.807622][ T91] hvc_console_print+0x292/0x780 [ 15.807629][ T91] ? hvc_write+0x3a0/0x3a0 [ 15.807632][ T91] ? rcu_is_watching+0x16/0xd0 [ 15.807634][ T91] ? lock_acquire+0x13c/0x160 [ 15.807638][ T91] console_emit_next_record+0x22f/0x4c0 [ 15.807642][ T91] ? devkmsg_read+0x4b0/0x4b0 [ 15.807643][ T91] ? console_flush_one_record+0x106/0x710 [ 15.807646][ T91] ? rcu_is_watching+0x16/0xd0 [ 15.807648][ T91] ? lock_acquire+0x13c/0x160 [ 15.807652][ T91] console_flush_one_record+0x46f/0x710 [ 15.807656][ T91] ? console_emit_next_record+0x4c0/0x4c0 [ 15.807658][ T91] ? __lock_acquire+0x518/0xc20 [ 15.807663][ T91] console_unlock+0xee/0x1f0 [ 15.807665][ T91] ? console_flush_one_record+0x710/0x710 [ 15.807667][ T91] ? rcu_is_watching+0x16/0xd0 [ 15.807669][ T91] ? lock_acquire+0x60/0x160 [ 15.807673][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.807675][ T91] ? vprintk_emit+0x320/0x3e0 [ 15.807678][ T91] vprintk_emit+0x37c/0x3e0 [ 15.807682][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 15.807685][ T91] ? __lock_acquire+0x518/0xc20 [ 15.807689][ T91] _printk+0xc7/0x100 [ 15.807693][ T91] ? snapshot_read.cold+0x21/0x21 [ 15.807695][ T91] ? do_raw_spin_lock+0x131/0x280 [ 15.807698][ T91] ? __rwlock_init+0x150/0x150 [ 15.807702][ T91] ? do_raw_spin_lock+0x131/0x280 [ 15.807704][ T91] do_exit.cold+0x82/0x9c [ 15.807708][ T91] ? exit_notify+0x890/0x890 [ 15.807710][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 15.807712][ T91] ? rcu_is_watching+0x16/0xd0 [ 15.807717][ T91] do_group_exit+0xb8/0x370 [ 15.807720][ T91] __x64_sys_exit_group+0x3c/0x50 [ 15.807722][ T91] x64_sys_call+0x1567/0x1570 [ 15.807725][ T91] do_syscall_64+0xff/0x530 [ 15.807729][ T91] ? irq_exit_rcu+0x1a/0x30 [ 15.807732][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.807735][ T91] RIP: 0033:0x7faf80b371b8 [ 15.807737][ T91] Code: Unable to access opcode bytes at 0x7faf80b3718e. [ 15.807739][ T91] RSP: 002b:00007ffeaff24158 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.807741][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faf80b371b8 [ 15.807743][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.807744][ T91] RBP: 00007ffeaff242e0 R08: 000055987b3608f8 R09: 0000000000000000 [ 15.807744][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.807745][ T91] R13: 00007faf80395050 R14: 00007faf81068d9e R15: 000055987b201700 [ 15.807753][ T91]