[ 9.291647][ T199] tc (199) used greatest stack depth: 23712 bytes left [ 9.291663][ T199] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.291665][ T199] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 199, name: tc [ 9.291666][ T199] preempt_count: 2, expected: 0 [ 9.291667][ T199] RCU nest depth: 0, expected: 0 [ 9.291668][ T199] locks held by tc/199: 5, last CPU#0: [ 9.291670][ T199] #0: ffffffff892167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.291681][ T199] #1: ffffffff8937ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.291686][ T199] #2: ffffffff8937de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.291690][ T199] #3: ffffffff8929d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.291694][ T199] #4: ffffffff8929d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.291698][ T199] irq event stamp: 45676 [ 9.291698][ T199] hardirqs last enabled at (45675): [] __down_trylock_console_sem+0x86/0xa0 [ 9.291701][ T199] hardirqs last disabled at (45676): [] console_emit_next_record+0x3d4/0x4c0 [ 9.291703][ T199] softirqs last enabled at (45204): [] handle_softirqs+0x67c/0x900 [ 9.291706][ T199] softirqs last disabled at (45193): [] __irq_exit_rcu+0x145/0x1c0 [ 9.291708][ T199] Preemption disabled at: [ 9.291709][ T199] [<0000000000000000>] 0x0 [ 9.291715][ T199] CPU: 0 UID: 0 PID: 199 Comm: tc Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.291718][ T199] Tainted: [W]=WARN [ 9.291719][ T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.291720][ T199] Call Trace: [ 9.291722][ T199] [ 9.291723][ T199] dump_stack_lvl+0x6f/0xa0 [ 9.291729][ T199] __might_resched.cold+0x1fe/0x2c1 [ 9.291733][ T199] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.291738][ T199] ? __kmalloc_noprof+0xdb/0x760 [ 9.291742][ T199] __kmalloc_noprof+0x443/0x760 [ 9.291744][ T199] ? alloc_buf.isra.0+0x4b/0x260 [ 9.291751][ T199] ? do_raw_spin_unlock+0x59/0x250 [ 9.291753][ T199] alloc_buf.isra.0+0x4b/0x260 [ 9.291757][ T199] put_chars+0x1e1/0x2f0 [ 9.291759][ T199] ? __send_to_port+0x420/0x420 [ 9.291760][ T199] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.291764][ T199] ? validate_chain+0x38b/0xc20 [ 9.291769][ T199] hvc_console_print+0x292/0x780 [ 9.291776][ T199] ? hvc_write+0x3a0/0x3a0 [ 9.291779][ T199] ? rcu_is_watching+0x16/0xd0 [ 9.291781][ T199] ? lock_acquire+0x13c/0x160 [ 9.291785][ T199] console_emit_next_record+0x22f/0x4c0 [ 9.291789][ T199] ? devkmsg_read+0x4b0/0x4b0 [ 9.291791][ T199] ? console_flush_one_record+0x106/0x710 [ 9.291794][ T199] ? rcu_is_watching+0x16/0xd0 [ 9.291795][ T199] ? lock_acquire+0x13c/0x160 [ 9.291799][ T199] console_flush_one_record+0x46f/0x710 [ 9.291803][ T199] ? console_emit_next_record+0x4c0/0x4c0 [ 9.291805][ T199] ? __lock_acquire+0x518/0xc20 [ 9.291810][ T199] console_unlock+0xee/0x1f0 [ 9.291813][ T199] ? console_flush_one_record+0x710/0x710 [ 9.291815][ T199] ? rcu_is_watching+0x16/0xd0 [ 9.291816][ T199] ? lock_acquire+0xe0/0x160 [ 9.291820][ T199] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.291822][ T199] ? vprintk_emit+0x320/0x3e0 [ 9.291824][ T199] vprintk_emit+0x37c/0x3e0 [ 9.291827][ T199] ? wake_up_klogd_work_func+0x90/0x90 [ 9.291830][ T199] ? __lock_acquire+0x518/0xc20 [ 9.291834][ T199] _printk+0xc7/0x100 [ 9.291837][ T199] ? snapshot_read.cold+0x21/0x21 [ 9.291840][ T199] ? do_raw_spin_lock+0x131/0x280 [ 9.291843][ T199] ? __rwlock_init+0x150/0x150 [ 9.291847][ T199] ? do_raw_spin_lock+0x131/0x280 [ 9.291849][ T199] do_exit.cold+0x82/0x9c [ 9.291853][ T199] ? exit_notify+0x890/0x890 [ 9.291854][ T199] ? __lock_release.isra.0+0x69/0x1a0 [ 9.291857][ T199] ? rcu_is_watching+0x16/0xd0 [ 9.291860][ T199] do_group_exit+0xb8/0x370 [ 9.291863][ T199] __x64_sys_exit_group+0x3c/0x50 [ 9.291865][ T199] x64_sys_call+0x1567/0x1570 [ 9.291867][ T199] do_syscall_64+0xff/0x530 [ 9.291871][ T199] ? exc_page_fault+0xee/0x100 [ 9.291874][ T199] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.291876][ T199] RIP: 0033:0x7fbaca97c1b8 [ 9.291878][ T199] Code: Unable to access opcode bytes at 0x7fbaca97c18e. [ 9.291879][ T199] RSP: 002b:00007ffec8fa6ec8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.291881][ T199] RAX: ffffffffffffffda RBX: 00007fbacaaacf88 RCX: 00007fbaca97c1b8 [ 9.291883][ T199] RDX: 00007fbaca6c7588 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.291883][ T199] RBP: 00007ffec8fa6f20 R08: 0000000000000000 R09: 0000000000000000 [ 9.291884][ T199] R10: 00007ffec8fa6cc0 R11: 0000000000000246 R12: 0000000000000001 [ 9.291885][ T199] R13: 0000000000000000 R14: 00007fbacaaab680 R15: 00007fbacaaacfa0 [ 9.291892][ T199]