[ 9.197711][ T176] ip (176) used greatest stack depth: 23736 bytes left [ 9.197733][ T176] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.197735][ T176] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 176, name: ip [ 9.197736][ T176] preempt_count: 2, expected: 0 [ 9.197737][ T176] RCU nest depth: 0, expected: 0 [ 9.197738][ T176] locks held by ip/176: 5, last CPU#0: [ 9.197740][ T176] #0: ffffffff87402f58 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x8e7/0xef0 [ 9.197757][ T176] #1: ffffffff8756a440 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.197762][ T176] #2: ffffffff8756a4b8 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.197765][ T176] #3: ffffffff87489de0 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.197768][ T176] #4: ffffffff87489ce0 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.197771][ T176] irq event stamp: 25008 [ 9.197772][ T176] hardirqs last enabled at (25007): [] __down_trylock_console_sem+0x86/0xa0 [ 9.197775][ T176] hardirqs last disabled at (25008): [] console_emit_next_record+0x3d4/0x4c0 [ 9.197777][ T176] softirqs last enabled at (25004): [] handle_softirqs+0x67c/0x900 [ 9.197779][ T176] softirqs last disabled at (24997): [] __irq_exit_rcu+0x145/0x1c0 [ 9.197782][ T176] Preemption disabled at: [ 9.197783][ T176] [<0000000000000000>] 0x0 [ 9.197790][ T176] CPU: 0 UID: 0 PID: 176 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.197793][ T176] Tainted: [W]=WARN [ 9.197794][ T176] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.197796][ T176] Call Trace: [ 9.197797][ T176] [ 9.197799][ T176] dump_stack_lvl+0x6f/0xa0 [ 9.197804][ T176] __might_resched.cold+0x1fe/0x2c1 [ 9.197808][ T176] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.197812][ T176] ? __kmalloc_noprof+0xdb/0x760 [ 9.197817][ T176] __kmalloc_noprof+0x443/0x760 [ 9.197819][ T176] ? alloc_buf.isra.0+0x4b/0x260 [ 9.197825][ T176] ? do_raw_spin_unlock+0x59/0x250 [ 9.197828][ T176] alloc_buf.isra.0+0x4b/0x260 [ 9.197831][ T176] put_chars+0x1e1/0x2f0 [ 9.197834][ T176] ? __send_to_port+0x420/0x420 [ 9.197840][ T176] hvc_console_print+0x292/0x780 [ 9.197847][ T176] ? hvc_write+0x3a0/0x3a0 [ 9.197850][ T176] ? lock_acquire+0x13c/0x160 [ 9.197854][ T176] console_emit_next_record+0x22f/0x4c0 [ 9.197857][ T176] ? devkmsg_read+0x4b0/0x4b0 [ 9.197859][ T176] ? console_flush_one_record+0x106/0x710 [ 9.197861][ T176] ? rcu_is_watching+0x16/0xd0 [ 9.197865][ T176] ? lock_acquire+0x13c/0x160 [ 9.197868][ T176] console_flush_one_record+0x46f/0x710 [ 9.197872][ T176] ? console_emit_next_record+0x4c0/0x4c0 [ 9.197873][ T176] ? __lock_acquire+0x518/0xc20 [ 9.197878][ T176] console_unlock+0xee/0x1f0 [ 9.197880][ T176] ? console_flush_one_record+0x710/0x710 [ 9.197882][ T176] ? rcu_is_watching+0x16/0xd0 [ 9.197883][ T176] ? lock_acquire+0x60/0x160 [ 9.197887][ T176] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.197889][ T176] ? vprintk_emit+0x320/0x3e0 [ 9.197892][ T176] vprintk_emit+0x37c/0x3e0 [ 9.197895][ T176] ? wake_up_klogd_work_func+0x90/0x90 [ 9.197898][ T176] ? __lock_acquire+0x518/0xc20 [ 9.197902][ T176] _printk+0xc7/0x100 [ 9.197905][ T176] ? snapshot_read.cold+0x21/0x21 [ 9.197908][ T176] ? do_raw_spin_lock+0x131/0x280 [ 9.197910][ T176] ? __rwlock_init+0x150/0x150 [ 9.197914][ T176] ? do_raw_spin_lock+0x131/0x280 [ 9.197917][ T176] do_exit.cold+0x82/0x9c [ 9.197921][ T176] ? exit_notify+0x890/0x890 [ 9.197922][ T176] ? __lock_release.isra.0+0x69/0x1a0 [ 9.197925][ T176] ? rcu_is_watching+0x16/0xd0 [ 9.197928][ T176] do_group_exit+0xb8/0x370 [ 9.197931][ T176] __x64_sys_exit_group+0x3c/0x50 [ 9.197933][ T176] x64_sys_call+0x1567/0x1570 [ 9.197936][ T176] do_syscall_64+0x10e/0x570 [ 9.197939][ T176] ? exc_page_fault+0xee/0x100 [ 9.197942][ T176] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.197944][ T176] RIP: 0033:0x7f9d3ff891b8 [ 9.197946][ T176] Code: Unable to access opcode bytes at 0x7f9d3ff8918e. [ 9.197947][ T176] RSP: 002b:00007ffdf3aa5a78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.197950][ T176] RAX: ffffffffffffffda RBX: 00007f9d400b9f88 RCX: 00007f9d3ff891b8 [ 9.197951][ T176] RDX: 00007f9d3fcd3fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.197952][ T176] RBP: 00007ffdf3aa5ad0 R08: 0000000000000000 R09: 0000000000000050 [ 9.197953][ T176] R10: 00007ffdf3aa5890 R11: 0000000000000246 R12: 0000000000000001 [ 9.197953][ T176] R13: 0000000000000000 R14: 00007f9d400b8680 R15: 00007f9d400b9fa0 [ 9.197960][ T176] [ 9.517223][ T186] ip (186) used greatest stack depth: 23488 bytes left