======================================
| [    9.365066][  T194] softirqs last disabled at (44937): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.365069][  T194] Preemption disabled at:
| [    9.365069][  T194] vprintk_emit (kernel/printk/printk.c:2471)
| [    9.365078][  T194] Tainted: [W]=WARN
[    9.365079][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.365081][  T194] Call Trace:
[    9.365082][  T194]  <TASK>
[    9.365084][  T194]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.365090][  T194]  ? vprintk_emit (kernel/printk/printk.c:2471)
[    9.365091][  T194]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.365096][  T194]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.365100][  T194]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.365105][  T194]  __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))
[    9.365107][  T194]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.365114][  T194]  ? 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)
[    9.365116][  T194]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.365120][  T194]  put_chars (drivers/char/virtio_console.c:1176)
[    9.365123][  T194]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.365124][  T194]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.365127][  T194]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[    9.365132][  T194]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.365137][  T194]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.365141][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.365146][  T194]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.365149][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365154][  T194]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.365158][  T194]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.365159][  T194]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[    9.365162][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365164][  T194]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.365168][  T194]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.365172][  T194]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.365174][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.365179][  T194]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.365182][  T194]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.365184][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.365185][  T194]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[    9.365189][  T194]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.365190][  T194]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.365193][  T194]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.365196][  T194]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.365201][  T194]  ? pg_cleanup (net/core/pktgen.c:632) pktgen
[    9.365205][  T194]  _printk (kernel/printk/printk.c:2504)
[    9.365209][  T194]  ? snapshot_read.cold (user.c:?)
[    9.365215][  T194]  ? do_one_initcall (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/cpumask.h:650 ./include/linux/cpumask.h:1232 ./include/trace/events/initcall.h:27 init/main.c:1356)
[    9.365218][  T194] pg_init (net/core/pktgen.c:777) pktgen
[    9.365221][  T194]  do_one_initcall (init/main.c:1357)
[    9.365224][  T194]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[    9.365229][  T194]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[    9.365231][  T194]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[    9.365237][  T194]  do_init_module (kernel/module/main.c:3117)
[    9.365240][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[    9.365244][  T194]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[    9.365246][  T194]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[    9.365250][  T194]  load_module (kernel/module/main.c:3593)
[    9.365255][  T194]  ? security_kernel_post_read_file (security/security.c:2997 (discriminator 11))
[    9.365260][  T194]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[    9.365263][  T194]  ? __ia32_sys_fsconfig (??:?)
[    9.365266][  T194]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[    9.365272][  T194]  init_module_from_file (kernel/module/main.c:3790)
[    9.365274][  T194]  ? __do_sys_init_module (kernel/module/main.c:3664)
[    9.365282][  T194]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.365285][  T194]  ? 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)
[    9.365288][  T194]  idempotent_init_module (kernel/module/main.c:3802)
[    9.365291][  T194]  ? init_module_from_file (kernel/module/main.c:3791)
[    9.365296][  T194]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[    9.365299][  T194]  ? __x64_sys_pread64 (fs/read_write.c:764 fs/read_write.c:772 fs/read_write.c:769 fs/read_write.c:769)
[    9.365304][  T194]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[    9.365305][  T194]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[    9.365310][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.365312][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.365315][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.365317][  T194] RIP: 0033:0x7faeb3cb637d
[    9.365320][  T194] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48
All code
========
   0:	ff c3                	inc    %ebx
   2:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 
   c:	90                   	nop
   d:	f3 0f 1e fa          	endbr64
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa85
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 4b aa 0f 00 	mov    0xfaa4b(%rip),%rcx        # 0xfaa5b
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[    9.365322][  T194] RSP: 002b:00007fffcfdd7828 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[    9.365325][  T194] RAX: ffffffffffffffda RBX: 0000562ec4a3a700 RCX: 00007faeb3cb637d
[    9.365326][  T194] RDX: 0000000000000000 RSI: 0000562ebf935ffd RDI: 0000000000000005
[    9.365327][  T194] RBP: 00007fffcfdd78c0 R08: 0000000000000000 R09: 0000000000000000
[    9.365328][  T194] R10: 0000000000000000 R11: 0000000000000246 R12: 0000562ebf935ffd
[    9.365328][  T194] R13: 0000562ec4a3a820 R14: 0000000000040000 R15: 0000000000000000
| [   10.802097][  T209] softirqs last disabled at (338): fpu_clone (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/core.c:710 (discriminator 2))
| [   10.802099][  T209] Preemption disabled at:
| [   10.802100][  T209] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.802109][  T209] Tainted: [W]=WARN
[   10.802109][  T209] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.802111][  T209] Call Trace:
[   10.802113][  T209]  <TASK>
[   10.802114][  T209]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.802120][  T209]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.802121][  T209]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.802130][  T209]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.802134][  T209]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.802138][  T209]  __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))
[   10.802140][  T209]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.802147][  T209]  ? 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)
[   10.802150][  T209]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.802153][  T209]  put_chars (drivers/char/virtio_console.c:1176)
[   10.802155][  T209]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.802159][  T209]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.802163][  T209]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.802167][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.802169][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.802173][  T209]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.802175][  T209]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   10.802178][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.802181][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.802185][  T209]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.802189][  T209]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.802190][  T209]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.802194][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.802195][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.802199][  T209]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.802203][  T209]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.802205][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.802210][  T209]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.802213][  T209]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.802215][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.802217][  T209]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   10.802220][  T209]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.802222][  T209]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.802225][  T209]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.802228][  T209]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.802230][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.802234][  T209]  _printk (kernel/printk/printk.c:2504)
[   10.802237][  T209]  ? snapshot_read.cold (user.c:?)
[   10.802240][  T209]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.802244][  T209]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5593)
[   10.802248][  T209] pktgen_if_write.cold (net/core/pktgen.c:1001 (discriminator 1)) pktgen
[   10.802252][  T209]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.802257][  T209]  ? pktgen_thread_worker (net/core/pktgen.c:3767 (discriminator 11)) pktgen
[   10.802259][  T209]  ? file_update_time_flags (fs/inode.c:2484)
[   10.802263][  T209]  ? fault_dirty_shared_page (mm/memory.c:3858)
[   10.802268][  T209]  ? do_pte_missing (mm/memory.c:6092 mm/memory.c:6138 mm/memory.c:4700)
[   10.802272][  T209]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.802274][  T209]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.802276][  T209]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.802279][  T209]  ? mksaveddirty_shift (./arch/x86/include/asm/pgtable.h:373)
[   10.802285][  T209]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.802287][  T209]  ? ksys_write (fs/read_write.c:739)
[   10.802291][  T209]  proc_reg_write (fs/proc/inode.c:330 fs/proc/inode.c:342)
[   10.802295][  T209]  vfs_write (fs/read_write.c:685)
[   10.802299][  T209]  ksys_write (fs/read_write.c:739)
[   10.802301][  T209]  ? __ia32_sys_read (fs/read_write.c:723)
[   10.802303][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.802305][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.802308][  T209]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.802312][  T209]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.802314][  T209]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.802316][  T209] RIP: 0033:0x7fcb8c76854e
[   10.802320][  T209] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.802321][  T209] RSP: 002b:00007ffe4a6db670 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   10.802324][  T209] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcb8c76854e
[   10.802325][  T209] RDX: 0000000000000000 RSI: 000000000040d760 RDI: 0000000000000007
[   10.802326][  T209] RBP: 00007ffe4a6db680 R08: 0000000000000000 R09: 0000000000000000
[   10.802327][  T209] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe4a6dbb70


Finger prints:
fpu_clone:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars