[ 18.724954][ T204] (udev-worker) (204) used greatest stack depth: 22696 bytes left [ 18.724970][ T204] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.724972][ T204] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 204, name: (udev-worker) [ 18.724974][ T204] preempt_count: 2, expected: 0 [ 18.724975][ T204] RCU nest depth: 0, expected: 0 [ 18.724976][ T204] locks held by (udev-worker)/204: 5, last CPU#2: [ 18.724978][ T204] #0: ffffffff8e8167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 18.724988][ T204] #1: ffffffff8e97ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 18.724993][ T204] #2: ffffffff8e97de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 18.724998][ T204] #3: ffffffff8e89d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 18.725001][ T204] #4: ffffffff8e89d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 18.725005][ T204] irq event stamp: 1004486 [ 18.725006][ T204] hardirqs last enabled at (1004485): [] __down_trylock_console_sem+0x86/0xa0 [ 18.725009][ T204] hardirqs last disabled at (1004486): [] console_emit_next_record+0x3d4/0x4c0 [ 18.725011][ T204] softirqs last enabled at (1004416): [] netlink_release+0x17b/0xcf0 [ 18.725016][ T204] softirqs last disabled at (1004414): [] netlink_release+0xd2/0xcf0 [ 18.725018][ T204] Preemption disabled at: [ 18.725019][ T204] [<0000000000000000>] 0x0 [ 18.725026][ T204] CPU: 2 UID: 0 PID: 204 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.725029][ T204] Tainted: [W]=WARN [ 18.725030][ T204] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.725032][ T204] Call Trace: [ 18.725034][ T204] [ 18.725035][ T204] dump_stack_lvl+0x6f/0xa0 [ 18.725041][ T204] __might_resched.cold+0x1fe/0x2c1 [ 18.725046][ T204] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.725050][ T204] ? __kmalloc_noprof+0xdb/0x760 [ 18.725054][ T204] __kmalloc_noprof+0x443/0x760 [ 18.725056][ T204] ? alloc_buf.isra.0+0x4b/0x260 [ 18.725063][ T204] ? do_raw_spin_unlock+0x59/0x250 [ 18.725065][ T204] alloc_buf.isra.0+0x4b/0x260 [ 18.725069][ T204] put_chars+0x1e1/0x2f0 [ 18.725071][ T204] ? __send_to_port+0x420/0x420 [ 18.725072][ T204] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 18.725076][ T204] ? validate_chain+0x38b/0xc20 [ 18.725081][ T204] hvc_console_print+0x292/0x780 [ 18.725089][ T204] ? hvc_write+0x3a0/0x3a0 [ 18.725091][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.725093][ T204] ? lock_acquire+0x13c/0x160 [ 18.725099][ T204] console_emit_next_record+0x22f/0x4c0 [ 18.725103][ T204] ? devkmsg_read+0x4b0/0x4b0 [ 18.725105][ T204] ? console_flush_one_record+0x106/0x710 [ 18.725108][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.725109][ T204] ? lock_acquire+0x13c/0x160 [ 18.725113][ T204] console_flush_one_record+0x46f/0x710 [ 18.725117][ T204] ? console_emit_next_record+0x4c0/0x4c0 [ 18.725119][ T204] ? __lock_acquire+0x518/0xc20 [ 18.725124][ T204] console_unlock+0xee/0x1f0 [ 18.725127][ T204] ? console_flush_one_record+0x710/0x710 [ 18.725129][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.725130][ T204] ? lock_acquire+0xe0/0x160 [ 18.725134][ T204] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.725136][ T204] ? vprintk_emit+0x320/0x3e0 [ 18.725138][ T204] vprintk_emit+0x37c/0x3e0 [ 18.725141][ T204] ? wake_up_klogd_work_func+0x90/0x90 [ 18.725144][ T204] ? __lock_acquire+0x518/0xc20 [ 18.725148][ T204] _printk+0xc7/0x100 [ 18.725151][ T204] ? snapshot_read.cold+0x21/0x21 [ 18.725154][ T204] ? do_raw_spin_lock+0x131/0x280 [ 18.725157][ T204] ? __rwlock_init+0x150/0x150 [ 18.725160][ T204] ? do_raw_spin_lock+0x131/0x280 [ 18.725163][ T204] do_exit.cold+0x82/0x9c [ 18.725167][ T204] ? exit_notify+0x890/0x890 [ 18.725168][ T204] ? __lock_release.isra.0+0x69/0x1a0 [ 18.725171][ T204] ? rcu_is_watching+0x16/0xd0 [ 18.725174][ T204] do_group_exit+0xb8/0x370 [ 18.725177][ T204] __x64_sys_exit_group+0x3c/0x50 [ 18.725179][ T204] x64_sys_call+0x1567/0x1570 [ 18.725181][ T204] do_syscall_64+0xff/0x530 [ 18.725185][ T204] ? exc_page_fault+0xee/0x100 [ 18.725187][ T204] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.725189][ T204] RIP: 0033:0x7f309981a1b8 [ 18.725191][ T204] Code: Unable to access opcode bytes at 0x7f309981a18e. [ 18.725193][ T204] RSP: 002b:00007fffa1d26698 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 18.725195][ T204] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f309981a1b8 [ 18.725196][ T204] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 18.725197][ T204] RBP: 00007fffa1d26820 R08: 000055d3f93bf628 R09: 0000000000000000 [ 18.725198][ T204] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 18.725199][ T204] R13: 00007f3099078050 R14: 00007f3099d4bd9e R15: 000055d3f924ba50 [ 18.725205][ T204]