[ 18.162922][ T183] (udev-worker) (183) used greatest stack depth: 22696 bytes left [ 18.162946][ T183] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.162949][ T183] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 183, name: (udev-worker) [ 18.162951][ T183] preempt_count: 2, expected: 0 [ 18.162953][ T183] RCU nest depth: 0, expected: 0 [ 18.162954][ T183] locks held by (udev-worker)/183: 5, last CPU#2: [ 18.162957][ T183] #0: ffffffffabc027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 18.162972][ T183] #1: ffffffffabd99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 18.162979][ T183] #2: ffffffffabd99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 18.162986][ T183] #3: ffffffffabc89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 18.162992][ T183] #4: ffffffffabc89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 18.162999][ T183] irq event stamp: 141694 [ 18.163000][ T183] hardirqs last enabled at (141693): [] __down_trylock_console_sem+0x86/0xa0 [ 18.163004][ T183] hardirqs last disabled at (141694): [] console_emit_next_record+0x3f8/0x4f0 [ 18.163007][ T183] softirqs last enabled at (141630): [] netlink_release+0x17b/0xcf0 [ 18.163013][ T183] softirqs last disabled at (141628): [] netlink_release+0xd2/0xcf0 [ 18.163017][ T183] Preemption disabled at: [ 18.163018][ T183] [<0000000000000000>] 0x0 [ 18.163026][ T183] CPU: 2 UID: 0 PID: 183 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.163031][ T183] Tainted: [W]=WARN [ 18.163033][ T183] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.163035][ T183] Call Trace: [ 18.163037][ T183] [ 18.163040][ T183] dump_stack_lvl+0x6f/0xa0 [ 18.163048][ T183] __might_resched.cold+0x1fe/0x2c1 [ 18.163055][ T183] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.163061][ T183] ? __kmalloc_noprof+0xdb/0x760 [ 18.163069][ T183] __kmalloc_noprof+0x443/0x760 [ 18.163073][ T183] ? alloc_buf.isra.0+0x4b/0x260 [ 18.163082][ T183] ? do_raw_spin_unlock+0x59/0x250 [ 18.163085][ T183] alloc_buf.isra.0+0x4b/0x260 [ 18.163091][ T183] put_chars+0x1e1/0x2f0 [ 18.163096][ T183] ? __send_to_port+0x420/0x420 [ 18.163099][ T183] ? printk_get_next_message+0x2fe/0x7d0 [ 18.163105][ T183] ? rcu_read_lock_any_held+0x3c/0x90 [ 18.163109][ T183] ? validate_chain+0x38b/0xc20 [ 18.163117][ T183] hvc_console_print+0x292/0x780 [ 18.163121][ T183] ? __lock_acquire+0x518/0xc20 [ 18.163124][ T183] ? __lock_acquire+0x518/0xc20 [ 18.163132][ T183] ? hvc_write+0x3a0/0x3a0 [ 18.163138][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.163141][ T183] ? lock_acquire+0x13c/0x160 [ 18.163148][ T183] console_emit_next_record+0x252/0x4f0 [ 18.163154][ T183] ? devkmsg_read+0x4e0/0x4e0 [ 18.163161][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.163164][ T183] ? lock_acquire+0x13c/0x160 [ 18.163171][ T183] console_flush_one_record+0x46f/0x710 [ 18.163178][ T183] ? console_emit_next_record+0x4f0/0x4f0 [ 18.163181][ T183] ? __lock_acquire+0x518/0xc20 [ 18.163189][ T183] console_unlock+0xee/0x1f0 [ 18.163194][ T183] ? console_flush_one_record+0x710/0x710 [ 18.163197][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.163199][ T183] ? lock_acquire+0x60/0x160 [ 18.163205][ T183] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.163208][ T183] ? vprintk_emit+0x320/0x3e0 [ 18.163213][ T183] vprintk_emit+0x37c/0x3e0 [ 18.163218][ T183] ? wake_up_klogd_work_func+0x90/0x90 [ 18.163223][ T183] ? __lock_acquire+0x518/0xc20 [ 18.163229][ T183] _printk+0xc7/0x100 [ 18.163234][ T183] ? snapshot_read.cold+0x21/0x21 [ 18.163239][ T183] ? do_raw_spin_lock+0x131/0x280 [ 18.163243][ T183] ? __rwlock_init+0x150/0x150 [ 18.163250][ T183] ? do_raw_spin_lock+0x131/0x280 [ 18.163254][ T183] do_exit.cold+0x82/0x9c [ 18.163260][ T183] ? exit_notify+0x890/0x890 [ 18.163262][ T183] ? __lock_release.isra.0+0x69/0x1a0 [ 18.163267][ T183] ? rcu_is_watching+0x16/0xd0 [ 18.163273][ T183] do_group_exit+0xb8/0x370 [ 18.163278][ T183] __x64_sys_exit_group+0x3c/0x50 [ 18.163281][ T183] x64_sys_call+0x1567/0x1570 [ 18.163285][ T183] do_syscall_64+0xff/0x530 [ 18.163289][ T183] ? exc_page_fault+0xee/0x100 [ 18.163294][ T183] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.163297][ T183] RIP: 0033:0x7f655d92a1b8 [ 18.163301][ T183] Code: Unable to access opcode bytes at 0x7f655d92a18e. [ 18.163303][ T183] RSP: 002b:00007ffde51d30b8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 18.163306][ T183] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f655d92a1b8 [ 18.163308][ T183] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 18.163309][ T183] RBP: 00007ffde51d3240 R08: 00005595706d2ff8 R09: 0000000000000000 [ 18.163316][ T183] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 18.163317][ T183] R13: 00007f655d188050 R14: 00007f655de5bd9e R15: 00005595706acf50 [ 18.163330][ T183]