[ 10.304013][ T187] ip (187) used greatest stack depth: 24376 bytes left [ 10.304029][ T187] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.304031][ T187] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 187, name: ip [ 10.304033][ T187] preempt_count: 2, expected: 0 [ 10.304034][ T187] RCU nest depth: 0, expected: 0 [ 10.304035][ T187] locks held by ip/187: 5, last CPU#3: [ 10.304037][ T187] #0: ffffffff93e267b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 10.304049][ T187] #1: ffffffff93f8dcc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.304054][ T187] #2: ffffffff93f8dd38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.304058][ T187] #3: ffffffff93ead660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.304062][ T187] #4: ffffffff93ead560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.304066][ T187] irq event stamp: 22000 [ 10.304067][ T187] hardirqs last enabled at (21999): [] __down_trylock_console_sem+0x86/0xa0 [ 10.304069][ T187] hardirqs last disabled at (22000): [] console_emit_next_record+0x3d4/0x4c0 [ 10.304071][ T187] softirqs last enabled at (21844): [] handle_softirqs+0x67c/0x900 [ 10.304072][ T187] softirqs last disabled at (21839): [] __irq_exit_rcu+0x145/0x1c0 [ 10.304074][ T187] Preemption disabled at: [ 10.304075][ T187] [<0000000000000000>] 0x0 [ 10.304082][ T187] CPU: 3 UID: 0 PID: 187 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.304085][ T187] Tainted: [W]=WARN [ 10.304086][ T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.304088][ T187] Call Trace: [ 10.304089][ T187] [ 10.304091][ T187] dump_stack_lvl+0x6f/0xa0 [ 10.304097][ T187] __might_resched.cold+0x1fe/0x2c1 [ 10.304101][ T187] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.304105][ T187] ? __kmalloc_noprof+0xdb/0x760 [ 10.304110][ T187] __kmalloc_noprof+0x443/0x760 [ 10.304113][ T187] ? alloc_buf.isra.0+0x4b/0x260 [ 10.304122][ T187] ? do_raw_spin_unlock+0x59/0x250 [ 10.304124][ T187] alloc_buf.isra.0+0x4b/0x260 [ 10.304128][ T187] put_chars+0x1e1/0x2f0 [ 10.304131][ T187] ? __send_to_port+0x420/0x420 [ 10.304133][ T187] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.304138][ T187] ? validate_chain+0x38b/0xc20 [ 10.304143][ T187] hvc_console_print+0x292/0x780 [ 10.304150][ T187] ? hvc_write+0x3a0/0x3a0 [ 10.304152][ T187] ? rcu_is_watching+0x16/0xd0 [ 10.304155][ T187] ? lock_acquire+0x13c/0x160 [ 10.304158][ T187] console_emit_next_record+0x22f/0x4c0 [ 10.304162][ T187] ? devkmsg_read+0x4b0/0x4b0 [ 10.304163][ T187] ? console_flush_one_record+0x106/0x710 [ 10.304166][ T187] ? rcu_is_watching+0x16/0xd0 [ 10.304168][ T187] ? lock_acquire+0x13c/0x160 [ 10.304172][ T187] console_flush_one_record+0x46f/0x710 [ 10.304176][ T187] ? console_emit_next_record+0x4c0/0x4c0 [ 10.304177][ T187] ? __lock_acquire+0x518/0xc20 [ 10.304182][ T187] console_unlock+0xee/0x1f0 [ 10.304185][ T187] ? console_flush_one_record+0x710/0x710 [ 10.304186][ T187] ? rcu_is_watching+0x16/0xd0 [ 10.304188][ T187] ? lock_acquire+0x60/0x160 [ 10.304192][ T187] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.304193][ T187] ? vprintk_emit+0x320/0x3e0 [ 10.304196][ T187] vprintk_emit+0x37c/0x3e0 [ 10.304200][ T187] ? wake_up_klogd_work_func+0x90/0x90 [ 10.304203][ T187] ? __lock_acquire+0x518/0xc20 [ 10.304206][ T187] _printk+0xc7/0x100 [ 10.304210][ T187] ? snapshot_read.cold+0x21/0x21 [ 10.304213][ T187] ? do_raw_spin_lock+0x131/0x280 [ 10.304215][ T187] ? __rwlock_init+0x150/0x150 [ 10.304218][ T187] ? do_raw_spin_lock+0x131/0x280 [ 10.304221][ T187] do_exit.cold+0x82/0x9c [ 10.304224][ T187] ? exit_notify+0x890/0x890 [ 10.304226][ T187] ? __lock_release.isra.0+0x69/0x1a0 [ 10.304229][ T187] ? rcu_is_watching+0x16/0xd0 [ 10.304232][ T187] do_group_exit+0xb8/0x370 [ 10.304236][ T187] __x64_sys_exit_group+0x3c/0x50 [ 10.304238][ T187] x64_sys_call+0x1567/0x1570 [ 10.304240][ T187] do_syscall_64+0xff/0x530 [ 10.304243][ T187] ? exc_page_fault+0xee/0x100 [ 10.304247][ T187] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.304249][ T187] RIP: 0033:0x7f77e347a1b8 [ 10.304251][ T187] Code: Unable to access opcode bytes at 0x7f77e347a18e. [ 10.304253][ T187] RSP: 002b:00007ffc656ba218 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.304255][ T187] RAX: ffffffffffffffda RBX: 00007f77e35aaf88 RCX: 00007f77e347a1b8 [ 10.304256][ T187] RDX: 00007f77e31c4fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.304257][ T187] RBP: 00007ffc656ba270 R08: 0000000000000000 R09: 0000000000000050 [ 10.304258][ T187] R10: 00007ffc656ba030 R11: 0000000000000246 R12: 0000000000000001 [ 10.304259][ T187] R13: 0000000000000000 R14: 00007f77e35a9680 R15: 00007f77e35aafa0 [ 10.304265][ T187]