====================================== | [ 20.514630][ T375] softirqs last disabled at (0): 0x0 | [ 20.514634][ T375] Preemption disabled at: | [ 20.514635][ T375] vprintk_emit (kernel/printk/printk.c:2471) | [ 20.514644][ T375] Tainted: [W]=WARN [ 20.514645][ T375] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 20.514647][ T375] Workqueue: events_power_efficient phylink_resolve [ 20.514650][ T375] Call Trace: [ 20.514652][ T375] [ 20.514654][ T375] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 20.514660][ T375] ? vprintk_emit (kernel/printk/printk.c:2471) [ 20.514662][ T375] __might_resched.cold (kernel/sched/core.c:9234) [ 20.514666][ T375] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 20.514671][ T375] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 20.514676][ T375] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 20.514678][ T375] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 20.514684][ T375] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 20.514687][ T375] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 20.514690][ T375] put_chars (drivers/char/virtio_console.c:1176) [ 20.514693][ T375] ? __send_to_port (drivers/char/virtio_console.c:654) [ 20.514695][ T375] ? printk_get_next_message (kernel/printk/printk.c:3072) [ 20.514699][ T375] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 20.514701][ T375] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 20.514705][ T375] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 20.514709][ T375] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 20.514710][ T375] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 20.514715][ T375] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 20.514718][ T375] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.514721][ T375] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 20.514725][ T375] console_emit_next_record (kernel/printk/printk.c:3183) [ 20.514729][ T375] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 20.514733][ T375] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.514736][ T375] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 20.514740][ T375] console_flush_one_record (kernel/printk/printk.c:3268) [ 20.514744][ T375] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 20.514746][ T375] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 20.514751][ T375] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 20.514753][ T375] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 20.514755][ T375] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.514757][ T375] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18)) [ 20.514761][ T375] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 20.514762][ T375] ? vprintk_emit (kernel/printk/printk.c:2478) [ 20.514765][ T375] vprintk_emit (kernel/printk/printk.c:2479) [ 20.514769][ T375] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 20.514772][ T375] ? wakeup_preempt_fair (kernel/sched/fair.c:1142 kernel/sched/fair.c:10033) [ 20.514777][ T375] dev_vprintk_emit (drivers/base/core.c:5000) [ 20.514782][ T375] ? device_rename.cold (drivers/base/core.c:4612 (discriminator 13)) [ 20.514787][ T375] ? _raw_spin_unlock_irq_enable (./include/linux/spinlock_api_smp.h:229 (discriminator 1) kernel/locking/spinlock.c:237 (discriminator 1)) [ 20.514791][ T375] ? try_to_wake_up (./include/linux/preempt.h:500 (discriminator 1) kernel/sched/core.c:4263 (discriminator 1)) [ 20.514795][ T375] dev_printk_emit (drivers/base/core.c:5011) [ 20.514798][ T375] ? dev_vprintk_emit (drivers/base/core.c:5001) [ 20.514801][ T375] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 20.514803][ T375] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 20.514808][ T375] __netdev_printk (net/core/dev.c:13140 (discriminator 4)) [ 20.514814][ T375] netdev_printk (net/core/dev.c:13166) [ 20.514816][ T375] ? __netdev_printk (net/core/dev.c:13151 (discriminator 1)) [ 20.514819][ T375] ? mark_held_locks (kernel/locking/lockdep.c:4341) [ 20.514822][ T375] ? fbnic_mac_link_down_asic (drivers/net/ethernet/meta/fbnic/fbnic_mac.c:708) [ 20.514826][ T375] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 20.514828][ T375] ? queue_delayed_work_on (kernel/workqueue.c:2673 (discriminator 6)) [ 20.514831][ T375] ? fbnic_phylink_mac_link_down (drivers/net/ethernet/meta/fbnic/fbnic_phylink.c:156) [ 20.514835][ T375] phylink_resolve (drivers/net/phy/phylink.c:1720) [ 20.514836][ T375] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 20.514840][ T375] ? phylink_ethtool_ksettings_set (drivers/net/phy/phylink.c:189 (discriminator 1)) [ 20.514844][ T375] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.514845][ T375] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.514847][ T375] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 20.514849][ T375] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.514853][ T375] process_one_work (kernel/workqueue.c:3387) [ 20.514859][ T375] ? __queue_delayed_work (kernel/workqueue.c:2622) [ 20.514862][ T375] ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2)) [ 20.514869][ T375] worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551) [ 20.514873][ T375] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 20.514875][ T375] ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272) [ 20.514878][ T375] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 20.514881][ T375] ? rescuer_thread (./include/linux/list.h:419 (discriminator 3)) [ 20.514883][ T375] kthread (kernel/kthread.c:436) [ 20.514885][ T375] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 20.514888][ T375] ? kthread_affine_preferred (kernel/kthread.c:857) [ 20.514891][ T375] ret_from_fork (arch/x86/kernel/process.c:158) [ 20.514895][ T375] ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1)) [ 20.514897][ T375] ? trace_x86_fpu_regs_deactivated (./arch/x86/include/asm/trace/fpu.h:52 (discriminator 22)) [ 20.514899][ T375] ? save_fpregs_to_fpstate (arch/x86/kernel/fpu/core.c:144) [ 20.514901][ T375] ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663) [ 20.514903][ T375] ? kthread_affine_preferred (kernel/kthread.c:857) Finger prints: vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print