[ 10.400269][ T164] tr (164) used greatest stack depth: 24376 bytes left [ 10.400290][ T164] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 10.400292][ T164] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 164, name: tr [ 10.400294][ T164] preempt_count: 2, expected: 0 [ 10.400295][ T164] RCU nest depth: 0, expected: 0 [ 10.400296][ T164] locks held by tr/164: 5, last CPU#3: [ 10.400298][ T164] #0: ffffffffb0e167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 10.400309][ T164] #1: ffffffffb0f7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 10.400314][ T164] #2: ffffffffb0f7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 10.400319][ T164] #3: ffffffffb0e9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 10.400323][ T164] #4: ffffffffb0e9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 10.400327][ T164] irq event stamp: 14310 [ 10.400328][ T164] hardirqs last enabled at (14309): [] __down_trylock_console_sem+0x86/0xa0 [ 10.400331][ T164] hardirqs last disabled at (14310): [] console_emit_next_record+0x3d4/0x4c0 [ 10.400333][ T164] softirqs last enabled at (14182): [] handle_softirqs+0x67c/0x900 [ 10.400335][ T164] softirqs last disabled at (14171): [] __irq_exit_rcu+0x145/0x1c0 [ 10.400337][ T164] Preemption disabled at: [ 10.400338][ T164] [<0000000000000000>] 0x0 [ 10.400345][ T164] CPU: 3 UID: 0 PID: 164 Comm: tr Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 10.400349][ T164] Tainted: [W]=WARN [ 10.400350][ T164] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 10.400352][ T164] Call Trace: [ 10.400353][ T164] [ 10.400355][ T164] dump_stack_lvl+0x6f/0xa0 [ 10.400362][ T164] __might_resched.cold+0x1fe/0x2c1 [ 10.400366][ T164] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 10.400370][ T164] ? __kmalloc_noprof+0xdb/0x760 [ 10.400375][ T164] __kmalloc_noprof+0x443/0x760 [ 10.400377][ T164] ? alloc_buf.isra.0+0x4b/0x260 [ 10.400383][ T164] ? do_raw_spin_unlock+0x59/0x250 [ 10.400386][ T164] alloc_buf.isra.0+0x4b/0x260 [ 10.400390][ T164] put_chars+0x1e1/0x2f0 [ 10.400392][ T164] ? __send_to_port+0x420/0x420 [ 10.400394][ T164] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 10.400397][ T164] ? validate_chain+0x38b/0xc20 [ 10.400403][ T164] hvc_console_print+0x292/0x780 [ 10.400411][ T164] ? hvc_write+0x3a0/0x3a0 [ 10.400413][ T164] ? rcu_is_watching+0x16/0xd0 [ 10.400415][ T164] ? lock_acquire+0x13c/0x160 [ 10.400419][ T164] console_emit_next_record+0x22f/0x4c0 [ 10.400423][ T164] ? devkmsg_read+0x4b0/0x4b0 [ 10.400425][ T164] ? console_flush_one_record+0x106/0x710 [ 10.400429][ T164] ? rcu_is_watching+0x16/0xd0 [ 10.400430][ T164] ? lock_acquire+0x13c/0x160 [ 10.400434][ T164] console_flush_one_record+0x46f/0x710 [ 10.400439][ T164] ? console_emit_next_record+0x4c0/0x4c0 [ 10.400441][ T164] ? __lock_acquire+0x518/0xc20 [ 10.400446][ T164] console_unlock+0xee/0x1f0 [ 10.400449][ T164] ? console_flush_one_record+0x710/0x710 [ 10.400451][ T164] ? rcu_is_watching+0x16/0xd0 [ 10.400452][ T164] ? lock_acquire+0xe0/0x160 [ 10.400456][ T164] ? __down_trylock_console_sem+0x5e/0xa0 [ 10.400458][ T164] ? vprintk_emit+0x320/0x3e0 [ 10.400461][ T164] vprintk_emit+0x37c/0x3e0 [ 10.400464][ T164] ? wake_up_klogd_work_func+0x90/0x90 [ 10.400467][ T164] ? __lock_acquire+0x518/0xc20 [ 10.400470][ T164] _printk+0xc7/0x100 [ 10.400474][ T164] ? snapshot_read.cold+0x21/0x21 [ 10.400477][ T164] ? do_raw_spin_lock+0x131/0x280 [ 10.400479][ T164] ? __rwlock_init+0x150/0x150 [ 10.400483][ T164] ? do_raw_spin_lock+0x131/0x280 [ 10.400486][ T164] do_exit.cold+0x82/0x9c [ 10.400490][ T164] ? exit_notify+0x890/0x890 [ 10.400491][ T164] ? __lock_release.isra.0+0x69/0x1a0 [ 10.400494][ T164] ? rcu_is_watching+0x16/0xd0 [ 10.400497][ T164] do_group_exit+0xb8/0x370 [ 10.400500][ T164] __x64_sys_exit_group+0x3c/0x50 [ 10.400502][ T164] x64_sys_call+0x1567/0x1570 [ 10.400505][ T164] do_syscall_64+0xff/0x530 [ 10.400509][ T164] ? exc_page_fault+0xee/0x100 [ 10.400512][ T164] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 10.400514][ T164] RIP: 0033:0x7f9da705f1b8 [ 10.400516][ T164] Code: Unable to access opcode bytes at 0x7f9da705f18e. [ 10.400517][ T164] RSP: 002b:00007ffd96a424e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 10.400520][ T164] RAX: ffffffffffffffda RBX: 00007f9da718ff88 RCX: 00007f9da705f1b8 [ 10.400521][ T164] RDX: 00007f9da6f9ca48 RSI: ffffffffffffffb0 RDI: 0000000000000000 [ 10.400522][ T164] RBP: 00007ffd96a42540 R08: 0000000000000000 R09: 0000000000001010 [ 10.400523][ T164] R10: 00007ffd96a423a0 R11: 0000000000000246 R12: 0000000000000002 [ 10.400524][ T164] R13: 0000000000000000 R14: 00007f9da718e680 R15: 00007f9da718ffa0 [ 10.400530][ T164]