[ 15.683695][ T179] (udev-worker) (179) used greatest stack depth: 22696 bytes left [ 15.683717][ T179] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.683719][ T179] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 179, name: (udev-worker) [ 15.683721][ T179] preempt_count: 2, expected: 0 [ 15.683722][ T179] RCU nest depth: 0, expected: 0 [ 15.683723][ T179] locks held by (udev-worker)/179: 5, last CPU#2: [ 15.683725][ T179] #0: ffffffffa9c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.683739][ T179] #1: ffffffffa9d99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.683744][ T179] #2: ffffffffa9d99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.683749][ T179] #3: ffffffffa9c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.683753][ T179] #4: ffffffffa9c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.683757][ T179] irq event stamp: 124998 [ 15.683758][ T179] hardirqs last enabled at (124997): [] __down_trylock_console_sem+0x86/0xa0 [ 15.683762][ T179] hardirqs last disabled at (124998): [] console_emit_next_record+0x3f8/0x4f0 [ 15.683764][ T179] softirqs last enabled at (124934): [] netlink_release+0x17b/0xcf0 [ 15.683769][ T179] softirqs last disabled at (124932): [] netlink_release+0xd2/0xcf0 [ 15.683771][ T179] Preemption disabled at: [ 15.683772][ T179] [<0000000000000000>] 0x0 [ 15.683779][ T179] CPU: 2 UID: 0 PID: 179 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.683783][ T179] Tainted: [W]=WARN [ 15.683784][ T179] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.683786][ T179] Call Trace: [ 15.683787][ T179] [ 15.683789][ T179] dump_stack_lvl+0x6f/0xa0 [ 15.683796][ T179] __might_resched.cold+0x1fe/0x2c1 [ 15.683801][ T179] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.683805][ T179] ? __kmalloc_noprof+0xdb/0x760 [ 15.683811][ T179] __kmalloc_noprof+0x443/0x760 [ 15.683814][ T179] ? alloc_buf.isra.0+0x4b/0x260 [ 15.683820][ T179] ? do_raw_spin_unlock+0x59/0x250 [ 15.683823][ T179] alloc_buf.isra.0+0x4b/0x260 [ 15.683827][ T179] put_chars+0x1e1/0x2f0 [ 15.683830][ T179] ? __send_to_port+0x420/0x420 [ 15.683832][ T179] ? printk_get_next_message+0x2fe/0x7d0 [ 15.683836][ T179] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.683840][ T179] ? validate_chain+0x38b/0xc20 [ 15.683844][ T179] hvc_console_print+0x292/0x780 [ 15.683848][ T179] ? __lock_acquire+0x518/0xc20 [ 15.683849][ T179] ? __lock_acquire+0x518/0xc20 [ 15.683854][ T179] ? hvc_write+0x3a0/0x3a0 [ 15.683858][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.683860][ T179] ? lock_acquire+0x13c/0x160 [ 15.683864][ T179] console_emit_next_record+0x252/0x4f0 [ 15.683868][ T179] ? devkmsg_read+0x4e0/0x4e0 [ 15.683872][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.683874][ T179] ? lock_acquire+0x13c/0x160 [ 15.683878][ T179] console_flush_one_record+0x46f/0x710 [ 15.683882][ T179] ? console_emit_next_record+0x4f0/0x4f0 [ 15.683884][ T179] ? __lock_acquire+0x518/0xc20 [ 15.683890][ T179] console_unlock+0xee/0x1f0 [ 15.683893][ T179] ? console_flush_one_record+0x710/0x710 [ 15.683895][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.683897][ T179] ? lock_acquire+0x60/0x160 [ 15.683900][ T179] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.683902][ T179] ? vprintk_emit+0x320/0x3e0 [ 15.683905][ T179] vprintk_emit+0x37c/0x3e0 [ 15.683908][ T179] ? wake_up_klogd_work_func+0x90/0x90 [ 15.683911][ T179] ? __lock_acquire+0x518/0xc20 [ 15.683915][ T179] _printk+0xc7/0x100 [ 15.683918][ T179] ? snapshot_read.cold+0x21/0x21 [ 15.683924][ T179] ? do_raw_spin_lock+0x131/0x280 [ 15.683926][ T179] ? __rwlock_init+0x150/0x150 [ 15.683930][ T179] ? do_raw_spin_lock+0x131/0x280 [ 15.683933][ T179] do_exit.cold+0x82/0x9c [ 15.683937][ T179] ? exit_notify+0x890/0x890 [ 15.683939][ T179] ? __lock_release.isra.0+0x69/0x1a0 [ 15.683941][ T179] ? rcu_is_watching+0x16/0xd0 [ 15.683945][ T179] do_group_exit+0xb8/0x370 [ 15.683948][ T179] __x64_sys_exit_group+0x3c/0x50 [ 15.683950][ T179] x64_sys_call+0x1567/0x1570 [ 15.683952][ T179] do_syscall_64+0xff/0x530 [ 15.683956][ T179] ? irq_exit_rcu+0x1a/0x30 [ 15.683959][ T179] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.683962][ T179] RIP: 0033:0x7fd6108351b8 [ 15.683964][ T179] Code: Unable to access opcode bytes at 0x7fd61083518e. [ 15.683965][ T179] RSP: 002b:00007fffac4e48b8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.683968][ T179] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd6108351b8 [ 15.683969][ T179] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.683970][ T179] RBP: 00007fffac4e4a40 R08: 0000561f01479268 R09: 0000000000000000 [ 15.683971][ T179] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.683972][ T179] R13: 00007fd610093050 R14: 00007fd610d66d9e R15: 0000561f01466ef0 [ 15.683979][ T179]