[ 13.279260][ T81] (udev-worker) (81) used greatest stack depth: 22696 bytes left [ 13.279284][ T81] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.279287][ T81] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 81, name: (udev-worker) [ 13.279289][ T81] preempt_count: 2, expected: 0 [ 13.279291][ T81] RCU nest depth: 0, expected: 0 [ 13.279292][ T81] locks held by (udev-worker)/81: 5, last CPU#2: [ 13.279295][ T81] #0: ffffffffb5c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.279310][ T81] #1: ffffffffb5d99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.279318][ T81] #2: ffffffffb5d99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.279324][ T81] #3: ffffffffb5c89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.279330][ T81] #4: ffffffffb5c89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.279336][ T81] irq event stamp: 420012 [ 13.279337][ T81] hardirqs last enabled at (420011): [] __down_trylock_console_sem+0x86/0xa0 [ 13.279341][ T81] hardirqs last disabled at (420012): [] console_emit_next_record+0x3f8/0x4f0 [ 13.279344][ T81] softirqs last enabled at (419948): [] netlink_release+0x17b/0xcf0 [ 13.279349][ T81] softirqs last disabled at (419946): [] netlink_release+0xd2/0xcf0 [ 13.279353][ T81] Preemption disabled at: [ 13.279354][ T81] [<0000000000000000>] 0x0 [ 13.279364][ T81] CPU: 2 UID: 0 PID: 81 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.279368][ T81] Tainted: [W]=WARN [ 13.279370][ T81] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.279372][ T81] Call Trace: [ 13.279374][ T81] [ 13.279376][ T81] dump_stack_lvl+0x6f/0xa0 [ 13.279384][ T81] __might_resched.cold+0x1fe/0x2c1 [ 13.279391][ T81] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.279396][ T81] ? __kmalloc_noprof+0xdb/0x760 [ 13.279403][ T81] __kmalloc_noprof+0x443/0x760 [ 13.279407][ T81] ? alloc_buf.isra.0+0x4b/0x260 [ 13.279417][ T81] ? do_raw_spin_unlock+0x59/0x250 [ 13.279421][ T81] alloc_buf.isra.0+0x4b/0x260 [ 13.279427][ T81] put_chars+0x1e1/0x2f0 [ 13.279432][ T81] ? __send_to_port+0x420/0x420 [ 13.279435][ T81] ? printk_get_next_message+0x2fe/0x7d0 [ 13.279441][ T81] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.279445][ T81] ? validate_chain+0x38b/0xc20 [ 13.279452][ T81] hvc_console_print+0x292/0x780 [ 13.279457][ T81] ? __lock_acquire+0x518/0xc20 [ 13.279459][ T81] ? __lock_acquire+0x518/0xc20 [ 13.279467][ T81] ? hvc_write+0x3a0/0x3a0 [ 13.279473][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.279478][ T81] ? lock_acquire+0x13c/0x160 [ 13.279485][ T81] console_emit_next_record+0x252/0x4f0 [ 13.279491][ T81] ? devkmsg_read+0x4e0/0x4e0 [ 13.279499][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.279503][ T81] ? lock_acquire+0x13c/0x160 [ 13.279510][ T81] console_flush_one_record+0x46f/0x710 [ 13.279516][ T81] ? console_emit_next_record+0x4f0/0x4f0 [ 13.279519][ T81] ? __lock_acquire+0x518/0xc20 [ 13.279529][ T81] console_unlock+0xee/0x1f0 [ 13.279533][ T81] ? console_flush_one_record+0x710/0x710 [ 13.279536][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.279539][ T81] ? lock_acquire+0xa0/0x160 [ 13.279546][ T81] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.279548][ T81] ? vprintk_emit+0x320/0x3e0 [ 13.279554][ T81] vprintk_emit+0x37c/0x3e0 [ 13.279560][ T81] ? wake_up_klogd_work_func+0x90/0x90 [ 13.279566][ T81] ? __lock_acquire+0x518/0xc20 [ 13.279572][ T81] _printk+0xc7/0x100 [ 13.279577][ T81] ? snapshot_read.cold+0x21/0x21 [ 13.279581][ T81] ? do_raw_spin_lock+0x131/0x280 [ 13.279585][ T81] ? __rwlock_init+0x150/0x150 [ 13.279592][ T81] ? do_raw_spin_lock+0x131/0x280 [ 13.279597][ T81] do_exit.cold+0x82/0x9c [ 13.279602][ T81] ? exit_notify+0x890/0x890 [ 13.279604][ T81] ? __lock_release.isra.0+0x69/0x1a0 [ 13.279609][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.279616][ T81] do_group_exit+0xb8/0x370 [ 13.279630][ T81] __x64_sys_exit_group+0x3c/0x50 [ 13.279633][ T81] x64_sys_call+0x1567/0x1570 [ 13.279637][ T81] do_syscall_64+0xff/0x530 [ 13.279641][ T81] ? exc_page_fault+0xee/0x100 [ 13.279646][ T81] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.279650][ T81] RIP: 0033:0x7fcc6d2901b8 [ 13.279653][ T81] Code: Unable to access opcode bytes at 0x7fcc6d29018e. [ 13.279655][ T81] RSP: 002b:00007ffc8218cda8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.279658][ T81] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcc6d2901b8 [ 13.279660][ T81] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.279662][ T81] RBP: 00007ffc8218cf30 R08: 00005610d1032498 R09: 0000000000000000 [ 13.279663][ T81] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.279664][ T81] R13: 00007fcc6caee050 R14: 00007fcc6d7c1d9e R15: 00005610d103e300 [ 13.279677][ T81]