[ 21.282071][ T180] (udev-worker) (180) used greatest stack depth: 22696 bytes left [ 21.282089][ T180] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 21.282091][ T180] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 180, name: (udev-worker) [ 21.282093][ T180] preempt_count: 2, expected: 0 [ 21.282094][ T180] RCU nest depth: 0, expected: 0 [ 21.282095][ T180] locks held by (udev-worker)/180: 5, last CPU#1: [ 21.282097][ T180] #0: ffffffff942027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 21.282109][ T180] #1: ffffffff94399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 21.282114][ T180] #2: ffffffff94399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 21.282118][ T180] #3: ffffffff94289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 21.282122][ T180] #4: ffffffff94289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 21.282126][ T180] irq event stamp: 472670 [ 21.282127][ T180] hardirqs last enabled at (472669): [] __down_trylock_console_sem+0x86/0xa0 [ 21.282130][ T180] hardirqs last disabled at (472670): [] console_emit_next_record+0x3f8/0x4f0 [ 21.282132][ T180] softirqs last enabled at (472604): [] netlink_release+0x17b/0xcf0 [ 21.282137][ T180] softirqs last disabled at (472602): [] netlink_release+0xd2/0xcf0 [ 21.282140][ T180] Preemption disabled at: [ 21.282141][ T180] [<0000000000000000>] 0x0 [ 21.282148][ T180] CPU: 1 UID: 0 PID: 180 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 21.282151][ T180] Tainted: [W]=WARN [ 21.282152][ T180] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 21.282154][ T180] Call Trace: [ 21.282156][ T180] [ 21.282157][ T180] dump_stack_lvl+0x6f/0xa0 [ 21.282164][ T180] __might_resched.cold+0x1fe/0x2c1 [ 21.282169][ T180] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 21.282173][ T180] ? __kmalloc_noprof+0xdb/0x760 [ 21.282179][ T180] __kmalloc_noprof+0x443/0x760 [ 21.282182][ T180] ? alloc_buf.isra.0+0x4b/0x260 [ 21.282188][ T180] ? do_raw_spin_unlock+0x59/0x250 [ 21.282191][ T180] alloc_buf.isra.0+0x4b/0x260 [ 21.282194][ T180] put_chars+0x1e1/0x2f0 [ 21.282198][ T180] ? __send_to_port+0x420/0x420 [ 21.282199][ T180] ? printk_get_next_message+0x2fe/0x7d0 [ 21.282203][ T180] ? rcu_read_lock_any_held+0x3c/0x90 [ 21.282207][ T180] ? validate_chain+0x38b/0xc20 [ 21.282211][ T180] hvc_console_print+0x292/0x780 [ 21.282215][ T180] ? __lock_acquire+0x518/0xc20 [ 21.282217][ T180] ? __lock_acquire+0x518/0xc20 [ 21.282221][ T180] ? hvc_write+0x3a0/0x3a0 [ 21.282225][ T180] ? rcu_is_watching+0x16/0xd0 [ 21.282227][ T180] ? lock_acquire+0x13c/0x160 [ 21.282231][ T180] console_emit_next_record+0x252/0x4f0 [ 21.282235][ T180] ? devkmsg_read+0x4e0/0x4e0 [ 21.282240][ T180] ? rcu_is_watching+0x16/0xd0 [ 21.282242][ T180] ? lock_acquire+0x13c/0x160 [ 21.282246][ T180] console_flush_one_record+0x46f/0x710 [ 21.282250][ T180] ? console_emit_next_record+0x4f0/0x4f0 [ 21.282252][ T180] ? __lock_acquire+0x518/0xc20 [ 21.282258][ T180] console_unlock+0xee/0x1f0 [ 21.282261][ T180] ? console_flush_one_record+0x710/0x710 [ 21.282263][ T180] ? rcu_is_watching+0x16/0xd0 [ 21.282268][ T180] ? lock_acquire+0x60/0x160 [ 21.282272][ T180] ? __down_trylock_console_sem+0x5e/0xa0 [ 21.282274][ T180] ? vprintk_emit+0x320/0x3e0 [ 21.282277][ T180] vprintk_emit+0x37c/0x3e0 [ 21.282280][ T180] ? wake_up_klogd_work_func+0x90/0x90 [ 21.282283][ T180] ? __lock_acquire+0x518/0xc20 [ 21.282287][ T180] _printk+0xc7/0x100 [ 21.282291][ T180] ? snapshot_read.cold+0x21/0x21 [ 21.282294][ T180] ? do_raw_spin_lock+0x131/0x280 [ 21.282297][ T180] ? __rwlock_init+0x150/0x150 [ 21.282301][ T180] ? do_raw_spin_lock+0x131/0x280 [ 21.282304][ T180] do_exit.cold+0x82/0x9c [ 21.282308][ T180] ? exit_notify+0x890/0x890 [ 21.282309][ T180] ? __lock_release.isra.0+0x69/0x1a0 [ 21.282312][ T180] ? rcu_is_watching+0x16/0xd0 [ 21.282316][ T180] do_group_exit+0xb8/0x370 [ 21.282319][ T180] __x64_sys_exit_group+0x3c/0x50 [ 21.282321][ T180] x64_sys_call+0x1567/0x1570 [ 21.282323][ T180] do_syscall_64+0xff/0x530 [ 21.282327][ T180] ? exc_page_fault+0xee/0x100 [ 21.282330][ T180] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 21.282332][ T180] RIP: 0033:0x7f99779281b8 [ 21.282335][ T180] Code: Unable to access opcode bytes at 0x7f997792818e. [ 21.282336][ T180] RSP: 002b:00007ffc894ed988 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 21.282338][ T180] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f99779281b8 [ 21.282340][ T180] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 21.282341][ T180] RBP: 00007ffc894edb10 R08: 000055cf2af10ce8 R09: 0000000000000000 [ 21.282342][ T180] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 21.282342][ T180] R13: 00007f9977186050 R14: 00007f9977e59d9e R15: 000055cf2ad96ff0 [ 21.282349][ T180]