[ 27.464986][ T471] conntrack (471) used greatest stack depth: 23712 bytes left [ 27.465009][ T471] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 27.465011][ T471] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 471, name: conntrack [ 27.465014][ T471] preempt_count: 2, expected: 0 [ 27.465015][ T471] RCU nest depth: 0, expected: 0 [ 27.465016][ T471] locks held by conntrack/471: 5, last CPU#3: [ 27.465019][ T471] #0: ffffffff99c02f58 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x8e7/0xef0 [ 27.465033][ T471] #1: ffffffff99d6a440 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 27.465040][ T471] #2: ffffffff99d6a4b8 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 27.465044][ T471] #3: ffffffff99c89de0 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 27.465049][ T471] #4: ffffffff99c89ce0 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 27.465054][ T471] irq event stamp: 46464 [ 27.465055][ T471] hardirqs last enabled at (46463): [] __down_trylock_console_sem+0x86/0xa0 [ 27.465059][ T471] hardirqs last disabled at (46464): [] console_emit_next_record+0x3d4/0x4c0 [ 27.465061][ T471] softirqs last enabled at (46112): [] handle_softirqs+0x67c/0x900 [ 27.465064][ T471] softirqs last disabled at (46107): [] __irq_exit_rcu+0x145/0x1c0 [ 27.465067][ T471] Preemption disabled at: [ 27.465068][ T471] [<0000000000000000>] 0x0 [ 27.465077][ T471] CPU: 3 UID: 0 PID: 471 Comm: conntrack Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 27.465081][ T471] Tainted: [W]=WARN [ 27.465082][ T471] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.465084][ T471] Call Trace: [ 27.465086][ T471] [ 27.465088][ T471] dump_stack_lvl+0x6f/0xa0 [ 27.465096][ T471] __might_resched.cold+0x1fe/0x2c1 [ 27.465101][ T471] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 27.465106][ T471] ? __kmalloc_noprof+0xdb/0x760 [ 27.465113][ T471] __kmalloc_noprof+0x443/0x760 [ 27.465117][ T471] ? alloc_buf.isra.0+0x4b/0x260 [ 27.465126][ T471] ? do_raw_spin_unlock+0x59/0x250 [ 27.465130][ T471] alloc_buf.isra.0+0x4b/0x260 [ 27.465135][ T471] put_chars+0x1e1/0x2f0 [ 27.465139][ T471] ? __send_to_port+0x420/0x420 [ 27.465151][ T471] hvc_console_print+0x292/0x780 [ 27.465163][ T471] ? hvc_write+0x3a0/0x3a0 [ 27.465167][ T471] ? lock_acquire+0x13c/0x160 [ 27.465174][ T471] console_emit_next_record+0x22f/0x4c0 [ 27.465180][ T471] ? devkmsg_read+0x4b0/0x4b0 [ 27.465181][ T471] ? console_flush_one_record+0x106/0x710 [ 27.465186][ T471] ? rcu_is_watching+0x16/0xd0 [ 27.465190][ T471] ? lock_acquire+0x13c/0x160 [ 27.465196][ T471] console_flush_one_record+0x46f/0x710 [ 27.465202][ T471] ? console_emit_next_record+0x4c0/0x4c0 [ 27.465204][ T471] ? __lock_acquire+0x518/0xc20 [ 27.465212][ T471] console_unlock+0xee/0x1f0 [ 27.465216][ T471] ? console_flush_one_record+0x710/0x710 [ 27.465217][ T471] ? rcu_is_watching+0x16/0xd0 [ 27.465220][ T471] ? lock_acquire+0x60/0x160 [ 27.465226][ T471] ? __down_trylock_console_sem+0x5e/0xa0 [ 27.465229][ T471] ? vprintk_emit+0x320/0x3e0 [ 27.465233][ T471] vprintk_emit+0x37c/0x3e0 [ 27.465238][ T471] ? wake_up_klogd_work_func+0x90/0x90 [ 27.465243][ T471] ? __lock_acquire+0x518/0xc20 [ 27.465250][ T471] _printk+0xc7/0x100 [ 27.465255][ T471] ? snapshot_read.cold+0x21/0x21 [ 27.465259][ T471] ? do_raw_spin_lock+0x131/0x280 [ 27.465263][ T471] ? __rwlock_init+0x150/0x150 [ 27.465269][ T471] ? do_raw_spin_lock+0x131/0x280 [ 27.465273][ T471] do_exit.cold+0x82/0x9c [ 27.465278][ T471] ? exit_notify+0x890/0x890 [ 27.465280][ T471] ? __lock_release.isra.0+0x69/0x1a0 [ 27.465284][ T471] ? rcu_is_watching+0x16/0xd0 [ 27.465290][ T471] do_group_exit+0xb8/0x370 [ 27.465295][ T471] __x64_sys_exit_group+0x3c/0x50 [ 27.465298][ T471] x64_sys_call+0x1567/0x1570 [ 27.465301][ T471] do_syscall_64+0x10e/0x570 [ 27.465305][ T471] ? exc_page_fault+0xee/0x100 [ 27.465310][ T471] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 27.465313][ T471] RIP: 0033:0x7f8c076ff1b8 [ 27.465316][ T471] Code: Unable to access opcode bytes at 0x7f8c076ff18e. [ 27.465317][ T471] RSP: 002b:00007ffc36d39bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 27.465320][ T471] RAX: ffffffffffffffda RBX: 00007f8c0782ff88 RCX: 00007f8c076ff1b8 [ 27.465322][ T471] RDX: 00007f8c07636748 RSI: ffffffffffffffb0 RDI: 0000000000000000 [ 27.465323][ T471] RBP: 00007ffc36d39c50 R08: 0000000000000000 R09: 0000000000000020 [ 27.465324][ T471] R10: 00007ffc36d39a70 R11: 0000000000000246 R12: 0000000000000001 [ 27.465325][ T471] R13: 0000000000000000 R14: 00007f8c0782e680 R15: 00007f8c0782ffa0 [ 27.465337][ T471]