[ 9.192943][ T176] ip (176) used greatest stack depth: 24072 bytes left [ 9.192958][ T176] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.192960][ T176] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 176, name: ip [ 9.192961][ T176] preempt_count: 2, expected: 0 [ 9.192962][ T176] RCU nest depth: 0, expected: 0 [ 9.192963][ T176] locks held by ip/176: 5, last CPU#2: [ 9.192965][ T176] #0: ffffffffa3202f58 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x8e7/0xef0 [ 9.192976][ T176] #1: ffffffffa336a440 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.192981][ T176] #2: ffffffffa336a4b8 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.192984][ T176] #3: ffffffffa3289de0 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.192987][ T176] #4: ffffffffa3289ce0 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 9.192990][ T176] irq event stamp: 36044 [ 9.192991][ T176] hardirqs last enabled at (36043): [] __down_trylock_console_sem+0x86/0xa0 [ 9.192994][ T176] hardirqs last disabled at (36044): [] console_emit_next_record+0x3d4/0x4c0 [ 9.192996][ T176] softirqs last enabled at (35806): [] handle_softirqs+0x67c/0x900 [ 9.192998][ T176] softirqs last disabled at (35799): [] __irq_exit_rcu+0x145/0x1c0 [ 9.193001][ T176] Preemption disabled at: [ 9.193001][ T176] [<0000000000000000>] 0x0 [ 9.193008][ T176] CPU: 2 UID: 0 PID: 176 Comm: ip Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.193011][ T176] Tainted: [W]=WARN [ 9.193012][ T176] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.193014][ T176] Call Trace: [ 9.193015][ T176] [ 9.193017][ T176] dump_stack_lvl+0x6f/0xa0 [ 9.193022][ T176] __might_resched.cold+0x1fe/0x2c1 [ 9.193026][ T176] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.193030][ T176] ? __kmalloc_noprof+0xdb/0x760 [ 9.193035][ T176] __kmalloc_noprof+0x443/0x760 [ 9.193037][ T176] ? alloc_buf.isra.0+0x4b/0x260 [ 9.193043][ T176] ? do_raw_spin_unlock+0x59/0x250 [ 9.193046][ T176] alloc_buf.isra.0+0x4b/0x260 [ 9.193050][ T176] put_chars+0x1e1/0x2f0 [ 9.193052][ T176] ? __send_to_port+0x420/0x420 [ 9.193059][ T176] hvc_console_print+0x292/0x780 [ 9.193065][ T176] ? hvc_write+0x3a0/0x3a0 [ 9.193068][ T176] ? lock_acquire+0x13c/0x160 [ 9.193072][ T176] console_emit_next_record+0x22f/0x4c0 [ 9.193076][ T176] ? devkmsg_read+0x4b0/0x4b0 [ 9.193077][ T176] ? console_flush_one_record+0x106/0x710 [ 9.193080][ T176] ? rcu_is_watching+0x16/0xd0 [ 9.193083][ T176] ? lock_acquire+0x13c/0x160 [ 9.193087][ T176] console_flush_one_record+0x46f/0x710 [ 9.193091][ T176] ? console_emit_next_record+0x4c0/0x4c0 [ 9.193092][ T176] ? __lock_acquire+0x518/0xc20 [ 9.193097][ T176] console_unlock+0xee/0x1f0 [ 9.193100][ T176] ? console_flush_one_record+0x710/0x710 [ 9.193101][ T176] ? rcu_is_watching+0x16/0xd0 [ 9.193103][ T176] ? lock_acquire+0x60/0x160 [ 9.193106][ T176] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.193108][ T176] ? vprintk_emit+0x320/0x3e0 [ 9.193111][ T176] vprintk_emit+0x37c/0x3e0 [ 9.193114][ T176] ? wake_up_klogd_work_func+0x90/0x90 [ 9.193117][ T176] ? __lock_acquire+0x518/0xc20 [ 9.193121][ T176] _printk+0xc7/0x100 [ 9.193124][ T176] ? snapshot_read.cold+0x21/0x21 [ 9.193127][ T176] ? do_raw_spin_lock+0x131/0x280 [ 9.193130][ T176] ? __rwlock_init+0x150/0x150 [ 9.193134][ T176] ? do_raw_spin_lock+0x131/0x280 [ 9.193136][ T176] do_exit.cold+0x82/0x9c [ 9.193140][ T176] ? exit_notify+0x890/0x890 [ 9.193142][ T176] ? __lock_release.isra.0+0x69/0x1a0 [ 9.193145][ T176] ? rcu_is_watching+0x16/0xd0 [ 9.193148][ T176] do_group_exit+0xb8/0x370 [ 9.193151][ T176] __x64_sys_exit_group+0x3c/0x50 [ 9.193153][ T176] x64_sys_call+0x1567/0x1570 [ 9.193156][ T176] do_syscall_64+0x10e/0x570 [ 9.193159][ T176] ? exc_page_fault+0xee/0x100 [ 9.193162][ T176] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.193164][ T176] RIP: 0033:0x7f7d4347e1b8 [ 9.193166][ T176] Code: Unable to access opcode bytes at 0x7f7d4347e18e. [ 9.193167][ T176] RSP: 002b:00007ffcaf758658 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 9.193170][ T176] RAX: ffffffffffffffda RBX: 00007f7d435aef88 RCX: 00007f7d4347e1b8 [ 9.193171][ T176] RDX: 00007f7d431c8fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 9.193172][ T176] RBP: 00007ffcaf7586b0 R08: 0000000000000000 R09: 0000000000000050 [ 9.193173][ T176] R10: 00007ffcaf758470 R11: 0000000000000246 R12: 0000000000000001 [ 9.193173][ T176] R13: 0000000000000000 R14: 00007f7d435ad680 R15: 00007f7d435aefa0 [ 9.193180][ T176] [ 9.271066][ T177] sysctl (177) used greatest stack depth: 23520 bytes left