[ 9.537676][ T198] tc (198) used greatest stack depth: 24032 bytes left [ 9.537693][ T198] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.537695][ T198] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 198, name: tc [ 9.537696][ T198] preempt_count: 2, expected: 0 [ 9.537697][ T198] RCU nest depth: 0, expected: 0 [ 9.537698][ T198] locks held by tc/198: 5, last CPU#0: [ 9.537701][ T198] #0: ffffffff8e4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.537713][ T198] #1: ffffffff8e569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.537718][ T198] #2: ffffffff8e569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.537721][ T198] #3: ffffffff8e489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.537724][ T198] #4: ffffffff8e489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.537728][ T198] irq event stamp: 29926 [ 9.537728][ T198] hardirqs last enabled at (29925): [] __down_trylock_console_sem+0x86/0xa0 [ 9.537732][ T198] hardirqs last disabled at (29926): [] console_emit_next_record+0x3d4/0x4c0 [ 9.537733][ T198] softirqs last enabled at (28998): [] handle_softirqs+0x67c/0x900 [ 9.537735][ T198] softirqs last disabled at (28991): [] __irq_exit_rcu+0x145/0x1c0 [ 9.537738][ T198] Preemption disabled at: [ 9.537738][ T198] [<0000000000000000>] 0x0 [ 9.537745][ T198] CPU: 0 UID: 0 PID: 198 Comm: tc Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.537749][ T198] Tainted: [W]=WARN [ 9.537749][ T198] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.537751][ T198] Call Trace: [ 9.537753][ T198] [ 9.537754][ T198] dump_stack_lvl+0x6f/0xa0 [ 9.537759][ T198] __might_resched.cold+0x1fe/0x2c1 [ 9.537764][ T198] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.537767][ T198] ? __kmalloc_noprof+0xdb/0x760 [ 9.537773][ T198] __kmalloc_noprof+0x443/0x760 [ 9.537775][ T198] ? alloc_buf.isra.0+0x4b/0x260 [ 9.537781][ T198] ? do_raw_spin_unlock+0x59/0x250 [ 9.537784][ T198] alloc_buf.isra.0+0x4b/0x260 [ 9.537787][ T198] put_chars+0x1e1/0x2f0 [ 9.537790][ T198] ? __send_to_port+0x420/0x420 [ 9.537792][ T198] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.537796][ T198] ? validate_chain+0x38b/0xc20 [ 9.537802][ T198] hvc_console_print+0x292/0x780 [ 9.537808][ T198] ? hvc_write+0x3a0/0x3a0 [ 9.537810][ T198] ? rcu_is_watching+0x16/0xd0 [ 9.537812][ T198] ? lock_acquire+0x13c/0x160 [ 9.537816][ T198] console_emit_next_record+0x22f/0x4c0 [ 9.537820][ T198] ? devkmsg_read+0x4b0/0x4b0 [ 9.537821][ T198] ? console_flush_one_record+0x106/0x710 [ 9.537824][ T198] ? rcu_is_watching+0x16/0xd0 [ 9.537825][ T198] ? lock_acquire+0x13c/0x160 [ 9.537829][ T198] console_flush_one_record+0x46f/0x710 [ 9.537833][ T198] ? console_emit_next_record+0x4c0/0x4c0 [ 9.537834][ T198] ? __lock_acquire+0x518/0xc20 [ 9.537839][ T198] console_unlock+0xee/0x1f0 [ 9.537842][ T198] ? console_flush_one_record+0x710/0x710 [ 9.537843][ T198] ? rcu_is_watching+0x16/0xd0 [ 9.537845][ T198] ? lock_acquire+0x60/0x160 [ 9.537848][ T198] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.537850][ T198] ? vprintk_emit+0x320/0x3e0 [ 9.537853][ T198] vprintk_emit+0x37c/0x3e0 [ 9.537856][ T198] ? wake_up_klogd_work_func+0x90/0x90 [ 9.537859][ T198] ? __lock_acquire+0x518/0xc20 [ 9.537863][ T198] _printk+0xc7/0x100 [ 9.537867][ T198] ? snapshot_read.cold+0x21/0x21 [ 9.537870][ T198] ? do_raw_spin_lock+0x131/0x280 [ 9.537872][ T198] ? __rwlock_init+0x150/0x150 [ 9.537876][ T198] ? do_raw_spin_lock+0x131/0x280 [ 9.537879][ T198] do_exit.cold+0x82/0x9c [ 9.537883][ T198] ? exit_notify+0x890/0x890 [ 9.537884][ T198] ? __lock_release.isra.0+0x69/0x1a0 [ 9.537887][ T198] ? rcu_is_watching+0x16/0xd0 [ 9.537891][ T198] do_group_exit+0xb8/0x370 [ 9.537893][ T198] __x64_sys_exit_group+0x3c/0x50 [ 9.537895][ T198] x64_sys_call+0x1567/0x1570 [ 9.537898][ T198] do_syscall_64+0xff/0x530 [ 9.537902][ T198] ? exc_page_fault+0xee/0x100 [ 9.537905][ T198] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.537908][ T198] RIP: 0033:0x7f41180ac1b8 [ 9.537910][ T198] Code: Unable to access opcode bytes at 0x7f41180ac18e. [ 9.537911][ T198] RSP: 002b:00007fff03696968 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.537913][ T198] RAX: ffffffffffffffda RBX: 00007f41181dcf88 RCX: 00007f41180ac1b8 [ 9.537914][ T198] RDX: 00007f4117df7588 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.537915][ T198] RBP: 00007fff036969c0 R08: 0000000000000000 R09: 0000000000000000 [ 9.537916][ T198] R10: 00007fff03696760 R11: 0000000000000246 R12: 0000000000000001 [ 9.537917][ T198] R13: 0000000000000000 R14: 00007f41181db680 R15: 00007f41181dcfa0 [ 9.537923][ T198]