[ 10.625029][ T176] ip (176) used greatest stack depth: 23880 bytes left [ 10.625050][ T176] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.625052][ T176] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 176, name: ip [ 10.625054][ T176] preempt_count: 2, expected: 0 [ 10.625056][ T176] RCU nest depth: 0, expected: 0 [ 10.625057][ T176] locks held by ip/176: 5, last CPU#2: [ 10.625060][ T176] #0: ffffffffa8802f58 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x8e7/0xef0 [ 10.625074][ T176] #1: ffffffffa896a440 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.625081][ T176] #2: ffffffffa896a4b8 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.625086][ T176] #3: ffffffffa8889de0 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.625091][ T176] #4: ffffffffa8889ce0 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.625097][ T176] irq event stamp: 32350 [ 10.625098][ T176] hardirqs last enabled at (32349): [] __down_trylock_console_sem+0x86/0xa0 [ 10.625102][ T176] hardirqs last disabled at (32350): [] console_emit_next_record+0x3d4/0x4c0 [ 10.625105][ T176] softirqs last enabled at (31888): [] handle_softirqs+0x67c/0x900 [ 10.625109][ T176] softirqs last disabled at (31883): [] __irq_exit_rcu+0x145/0x1c0 [ 10.625112][ T176] Preemption disabled at: [ 10.625113][ T176] [<0000000000000000>] 0x0 [ 10.625121][ T176] CPU: 2 UID: 0 PID: 176 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.625125][ T176] Tainted: [W]=WARN [ 10.625127][ T176] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.625129][ T176] Call Trace: [ 10.625131][ T176] [ 10.625133][ T176] dump_stack_lvl+0x6f/0xa0 [ 10.625141][ T176] __might_resched.cold+0x1fe/0x2c1 [ 10.625148][ T176] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.625152][ T176] ? __kmalloc_noprof+0xdb/0x760 [ 10.625160][ T176] __kmalloc_noprof+0x443/0x760 [ 10.625163][ T176] ? alloc_buf.isra.0+0x4b/0x260 [ 10.625174][ T176] ? do_raw_spin_unlock+0x59/0x250 [ 10.625178][ T176] alloc_buf.isra.0+0x4b/0x260 [ 10.625183][ T176] put_chars+0x1e1/0x2f0 [ 10.625188][ T176] ? __send_to_port+0x420/0x420 [ 10.625199][ T176] hvc_console_print+0x292/0x780 [ 10.625210][ T176] ? hvc_write+0x3a0/0x3a0 [ 10.625215][ T176] ? lock_acquire+0x13c/0x160 [ 10.625222][ T176] console_emit_next_record+0x22f/0x4c0 [ 10.625228][ T176] ? devkmsg_read+0x4b0/0x4b0 [ 10.625230][ T176] ? console_flush_one_record+0x106/0x710 [ 10.625235][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.625240][ T176] ? lock_acquire+0x13c/0x160 [ 10.625247][ T176] console_flush_one_record+0x46f/0x710 [ 10.625253][ T176] ? console_emit_next_record+0x4c0/0x4c0 [ 10.625255][ T176] ? __lock_acquire+0x518/0xc20 [ 10.625265][ T176] console_unlock+0xee/0x1f0 [ 10.625269][ T176] ? console_flush_one_record+0x710/0x710 [ 10.625271][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.625274][ T176] ? lock_acquire+0x60/0x160 [ 10.625281][ T176] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.625283][ T176] ? vprintk_emit+0x320/0x3e0 [ 10.625288][ T176] vprintk_emit+0x37c/0x3e0 [ 10.625294][ T176] ? wake_up_klogd_work_func+0x90/0x90 [ 10.625299][ T176] ? __lock_acquire+0x518/0xc20 [ 10.625305][ T176] _printk+0xc7/0x100 [ 10.625310][ T176] ? snapshot_read.cold+0x21/0x21 [ 10.625314][ T176] ? do_raw_spin_lock+0x131/0x280 [ 10.625319][ T176] ? __rwlock_init+0x150/0x150 [ 10.625325][ T176] ? do_raw_spin_lock+0x131/0x280 [ 10.625330][ T176] do_exit.cold+0x82/0x9c [ 10.625335][ T176] ? exit_notify+0x890/0x890 [ 10.625338][ T176] ? __lock_release.isra.0+0x69/0x1a0 [ 10.625342][ T176] ? rcu_is_watching+0x16/0xd0 [ 10.625349][ T176] do_group_exit+0xb8/0x370 [ 10.625354][ T176] __x64_sys_exit_group+0x3c/0x50 [ 10.625357][ T176] x64_sys_call+0x1567/0x1570 [ 10.625361][ T176] do_syscall_64+0x10e/0x570 [ 10.625365][ T176] ? exc_page_fault+0xee/0x100 [ 10.625370][ T176] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.625374][ T176] RIP: 0033:0x7f53029621b8 [ 10.625377][ T176] Code: Unable to access opcode bytes at 0x7f530296218e. [ 10.625378][ T176] RSP: 002b:00007ffd9f8f48a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.625382][ T176] RAX: ffffffffffffffda RBX: 00007f5302a92f88 RCX: 00007f53029621b8 [ 10.625383][ T176] RDX: 00007f53026acfc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 10.625385][ T176] RBP: 00007ffd9f8f4900 R08: 0000000000000000 R09: 0000000000000050 [ 10.625387][ T176] R10: 00007ffd9f8f46c0 R11: 0000000000000246 R12: 0000000000000001 [ 10.625388][ T176] R13: 0000000000000000 R14: 00007f5302a91680 R15: 00007f5302a92fa0 [ 10.625401][ T176]