[ 13.551056][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 13.551072][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.551074][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 13.551075][ T85] preempt_count: 2, expected: 0 [ 13.551076][ T85] RCU nest depth: 0, expected: 0 [ 13.551077][ T85] locks held by (udev-worker)/85: 5, last CPU#0: [ 13.551079][ T85] #0: ffffffff868027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.551092][ T85] #1: ffffffff86999cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.551097][ T85] #2: ffffffff86999d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.551101][ T85] #3: ffffffff86889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.551104][ T85] #4: ffffffff86889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.551108][ T85] irq event stamp: 429906 [ 13.551109][ T85] hardirqs last enabled at (429905): [] __down_trylock_console_sem+0x86/0xa0 [ 13.551111][ T85] hardirqs last disabled at (429906): [] console_emit_next_record+0x3f8/0x4f0 [ 13.551113][ T85] softirqs last enabled at (429842): [] netlink_release+0x17b/0xcf0 [ 13.551117][ T85] softirqs last disabled at (429840): [] netlink_release+0xd2/0xcf0 [ 13.551120][ T85] Preemption disabled at: [ 13.551121][ T85] [<0000000000000000>] 0x0 [ 13.551127][ T85] CPU: 0 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.551131][ T85] Tainted: [W]=WARN [ 13.551132][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.551134][ T85] Call Trace: [ 13.551135][ T85] [ 13.551137][ T85] dump_stack_lvl+0x6f/0xa0 [ 13.551143][ T85] __might_resched.cold+0x1fe/0x2c1 [ 13.551148][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.551151][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 13.551156][ T85] __kmalloc_noprof+0x443/0x760 [ 13.551158][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 13.551164][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 13.551166][ T85] alloc_buf.isra.0+0x4b/0x260 [ 13.551169][ T85] put_chars+0x1e1/0x2f0 [ 13.551172][ T85] ? __send_to_port+0x420/0x420 [ 13.551173][ T85] ? printk_get_next_message+0x2fe/0x7d0 [ 13.551177][ T85] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.551179][ T85] ? validate_chain+0x38b/0xc20 [ 13.551183][ T85] hvc_console_print+0x292/0x780 [ 13.551186][ T85] ? __lock_acquire+0x518/0xc20 [ 13.551188][ T85] ? __lock_acquire+0x518/0xc20 [ 13.551192][ T85] ? hvc_write+0x3a0/0x3a0 [ 13.551195][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.551198][ T85] ? lock_acquire+0x13c/0x160 [ 13.551202][ T85] console_emit_next_record+0x252/0x4f0 [ 13.551205][ T85] ? devkmsg_read+0x4e0/0x4e0 [ 13.551210][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.551212][ T85] ? lock_acquire+0x13c/0x160 [ 13.551215][ T85] console_flush_one_record+0x46f/0x710 [ 13.551219][ T85] ? console_emit_next_record+0x4f0/0x4f0 [ 13.551221][ T85] ? __lock_acquire+0x518/0xc20 [ 13.551226][ T85] console_unlock+0xee/0x1f0 [ 13.551229][ T85] ? console_flush_one_record+0x710/0x710 [ 13.551230][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.551232][ T85] ? lock_acquire+0x60/0x160 [ 13.551236][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.551237][ T85] ? vprintk_emit+0x320/0x3e0 [ 13.551240][ T85] vprintk_emit+0x37c/0x3e0 [ 13.551244][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 13.551247][ T85] ? __lock_acquire+0x518/0xc20 [ 13.551254][ T85] _printk+0xc7/0x100 [ 13.551259][ T85] ? snapshot_read.cold+0x21/0x21 [ 13.551262][ T85] ? do_raw_spin_lock+0x131/0x280 [ 13.551264][ T85] ? __rwlock_init+0x150/0x150 [ 13.551267][ T85] ? do_raw_spin_lock+0x131/0x280 [ 13.551270][ T85] do_exit.cold+0x82/0x9c [ 13.551274][ T85] ? exit_notify+0x890/0x890 [ 13.551275][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 13.551278][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.551282][ T85] do_group_exit+0xb8/0x370 [ 13.551285][ T85] __x64_sys_exit_group+0x3c/0x50 [ 13.551288][ T85] x64_sys_call+0x1567/0x1570 [ 13.551290][ T85] do_syscall_64+0xff/0x530 [ 13.551293][ T85] ? exc_page_fault+0xee/0x100 [ 13.551296][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.551298][ T85] RIP: 0033:0x7f0c9a9fe1b8 [ 13.551301][ T85] Code: Unable to access opcode bytes at 0x7f0c9a9fe18e. [ 13.551302][ T85] RSP: 002b:00007ffe44a1a7f8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.551304][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0c9a9fe1b8 [ 13.551305][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.551306][ T85] RBP: 00007ffe44a1a980 R08: 00005572fd7fe808 R09: 0000000000000000 [ 13.551307][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.551308][ T85] R13: 00007f0c9a25c050 R14: 00007f0c9af2fd9e R15: 00005572fd69db10 [ 13.551315][ T85]