[ 9.828114][ T163] grep (163) used greatest stack depth: 24848 bytes left [ 9.828132][ T163] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.828134][ T163] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 163, name: grep [ 9.828136][ T163] preempt_count: 2, expected: 0 [ 9.828137][ T163] RCU nest depth: 0, expected: 0 [ 9.828138][ T163] locks held by grep/163: 5, last CPU#1: [ 9.828140][ T163] #0: ffffffffb04027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 9.828153][ T163] #1: ffffffffb0569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.828158][ T163] #2: ffffffffb0569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.828161][ T163] #3: ffffffffb0489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.828164][ T163] #4: ffffffffb0489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.828167][ T163] irq event stamp: 10902 [ 9.828168][ T163] hardirqs last enabled at (10901): [] __down_trylock_console_sem+0x86/0xa0 [ 9.828171][ T163] hardirqs last disabled at (10902): [] console_emit_next_record+0x3d4/0x4c0 [ 9.828173][ T163] softirqs last enabled at (7666): [] handle_softirqs+0x67c/0x900 [ 9.828175][ T163] softirqs last disabled at (7659): [] __irq_exit_rcu+0x145/0x1c0 [ 9.828178][ T163] Preemption disabled at: [ 9.828178][ T163] [<0000000000000000>] 0x0 [ 9.828185][ T163] CPU: 1 UID: 0 PID: 163 Comm: grep Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.828188][ T163] Tainted: [W]=WARN [ 9.828189][ T163] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.828191][ T163] Call Trace: [ 9.828192][ T163] [ 9.828194][ T163] dump_stack_lvl+0x6f/0xa0 [ 9.828200][ T163] __might_resched.cold+0x1fe/0x2c1 [ 9.828204][ T163] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.828207][ T163] ? __kmalloc_noprof+0xdb/0x760 [ 9.828212][ T163] __kmalloc_noprof+0x443/0x760 [ 9.828214][ T163] ? alloc_buf.isra.0+0x4b/0x260 [ 9.828220][ T163] ? do_raw_spin_unlock+0x59/0x250 [ 9.828223][ T163] alloc_buf.isra.0+0x4b/0x260 [ 9.828226][ T163] put_chars+0x1e1/0x2f0 [ 9.828229][ T163] ? __send_to_port+0x420/0x420 [ 9.828231][ T163] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 9.828235][ T163] ? validate_chain+0x38b/0xc20 [ 9.828240][ T163] hvc_console_print+0x292/0x780 [ 9.828246][ T163] ? hvc_write+0x3a0/0x3a0 [ 9.828249][ T163] ? rcu_is_watching+0x16/0xd0 [ 9.828251][ T163] ? lock_acquire+0x13c/0x160 [ 9.828255][ T163] console_emit_next_record+0x22f/0x4c0 [ 9.828258][ T163] ? devkmsg_read+0x4b0/0x4b0 [ 9.828259][ T163] ? console_flush_one_record+0x106/0x710 [ 9.828262][ T163] ? rcu_is_watching+0x16/0xd0 [ 9.828264][ T163] ? lock_acquire+0x13c/0x160 [ 9.828267][ T163] console_flush_one_record+0x46f/0x710 [ 9.828271][ T163] ? console_emit_next_record+0x4c0/0x4c0 [ 9.828272][ T163] ? __lock_acquire+0x518/0xc20 [ 9.828278][ T163] console_unlock+0xee/0x1f0 [ 9.828280][ T163] ? console_flush_one_record+0x710/0x710 [ 9.828281][ T163] ? rcu_is_watching+0x16/0xd0 [ 9.828283][ T163] ? lock_acquire+0x60/0x160 [ 9.828286][ T163] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.828288][ T163] ? vprintk_emit+0x320/0x3e0 [ 9.828291][ T163] vprintk_emit+0x37c/0x3e0 [ 9.828294][ T163] ? wake_up_klogd_work_func+0x90/0x90 [ 9.828297][ T163] ? __lock_acquire+0x518/0xc20 [ 9.828301][ T163] _printk+0xc7/0x100 [ 9.828304][ T163] ? snapshot_read.cold+0x21/0x21 [ 9.828307][ T163] ? do_raw_spin_lock+0x131/0x280 [ 9.828310][ T163] ? __rwlock_init+0x150/0x150 [ 9.828314][ T163] ? do_raw_spin_lock+0x131/0x280 [ 9.828317][ T163] do_exit.cold+0x82/0x9c [ 9.828320][ T163] ? exit_notify+0x890/0x890 [ 9.828321][ T163] ? __lock_release.isra.0+0x69/0x1a0 [ 9.828324][ T163] ? rcu_is_watching+0x16/0xd0 [ 9.828328][ T163] do_group_exit+0xb8/0x370 [ 9.828330][ T163] __x64_sys_exit_group+0x3c/0x50 [ 9.828332][ T163] x64_sys_call+0x1567/0x1570 [ 9.828335][ T163] do_syscall_64+0xff/0x530 [ 9.828339][ T163] ? exc_page_fault+0xee/0x100 [ 9.828342][ T163] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.828344][ T163] RIP: 0033:0x7efec60901b8 [ 9.828346][ T163] Code: Unable to access opcode bytes at 0x7efec609018e. [ 9.828347][ T163] RSP: 002b:00007fff20d1b568 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.828350][ T163] RAX: ffffffffffffffda RBX: 00007efec61c0f88 RCX: 00007efec60901b8 [ 9.828351][ T163] RDX: 00007efec5fcee88 RSI: ffffffffffffffb0 RDI: 0000000000000001 [ 9.828352][ T163] RBP: 00007fff20d1b5c0 R08: 0000000000000000 R09: 0000000000000000 [ 9.828353][ T163] R10: 00007fff20d1b400 R11: 0000000000000246 R12: 0000000000000002 [ 9.828353][ T163] R13: 0000000000000001 R14: 00007efec61bf680 R15: 00007efec61c0fa0 [ 9.828360][ T163]