======================================
| [   10.759718][  T194] softirqs last disabled at (34343): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.759721][  T194] Preemption disabled at:
| [   10.759721][  T194] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.759730][  T194] Tainted: [W]=WARN
[   10.759731][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.759733][  T194] Call Trace:
[   10.759734][  T194]  <TASK>
[   10.759735][  T194]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.759741][  T194]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.759743][  T194]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.759747][  T194]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.759752][  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)
[   10.759756][  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))
[   10.759758][  T194]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.759764][  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)
[   10.759767][  T194]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.759771][  T194]  put_chars (drivers/char/virtio_console.c:1176)
[   10.759773][  T194]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.759775][  T194]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.759778][  T194]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.759781][  T194]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.759786][  T194]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.759789][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.759794][  T194]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.759797][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.759802][  T194]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.759805][  T194]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.759807][  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))
[   10.759810][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.759812][  T194]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.759816][  T194]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.759820][  T194]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.759822][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.759827][  T194]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.759830][  T194]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.759832][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.759833][  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)
[   10.759837][  T194]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.759839][  T194]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.759841][  T194]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.759845][  T194]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.759849][  T194]  ? pg_cleanup (net/core/pktgen.c:632) pktgen
[   10.759857][  T194]  _printk (kernel/printk/printk.c:2504)
[   10.759861][  T194]  ? snapshot_read.cold (user.c:?)
[   10.759867][  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)
[   10.759870][  T194] pg_init (net/core/pktgen.c:777) pktgen
[   10.759874][  T194]  do_one_initcall (init/main.c:1357)
[   10.759877][  T194]  ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10)
[   10.759881][  T194]  ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1))
[   10.759884][  T194]  ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178)
[   10.759889][  T194]  do_init_module (kernel/module/main.c:3117)
[   10.759892][  T194]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   10.759896][  T194]  ? free_module (./include/trace/events/module.h:50 (discriminator 19))
[   10.759899][  T194]  ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792)
[   10.759902][  T194]  load_module (kernel/module/main.c:3593)
[   10.759907][  T194]  ? security_kernel_post_read_file (security/security.c:2997 (discriminator 11))
[   10.759912][  T194]  ? layout_and_allocate.isra.0 (kernel/module/main.c:3016)
[   10.759915][  T194]  ? __ia32_sys_fsconfig (??:?)
[   10.759918][  T194]  ? add_chain_cache (kernel/locking/lockdep.c:3782)
[   10.759923][  T194]  init_module_from_file (kernel/module/main.c:3790)
[   10.759925][  T194]  ? __do_sys_init_module (kernel/module/main.c:3664)
[   10.759932][  T194]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.759936][  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)
[   10.759939][  T194]  idempotent_init_module (kernel/module/main.c:3802)
[   10.759941][  T194]  ? init_module_from_file (kernel/module/main.c:3791)
[   10.759947][  T194]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   10.759949][  T194]  ? __x64_sys_pread64 (fs/read_write.c:764 fs/read_write.c:772 fs/read_write.c:769 fs/read_write.c:769)
[   10.759954][  T194]  __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812)
[   10.759956][  T194]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   10.759960][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.759963][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.759965][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.759967][  T194] RIP: 0033:0x7f5caec0637d
[   10.759971][  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
[   10.759972][  T194] RSP: 002b:00007ffe9befd458 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[   10.759975][  T194] RAX: ffffffffffffffda RBX: 00005629b9f2f700 RCX: 00007f5caec0637d
[   10.759976][  T194] RDX: 0000000000000000 RSI: 0000562992d34ffd RDI: 0000000000000005
[   10.759977][  T194] RBP: 00007ffe9befd4f0 R08: 0000000000000000 R09: 0000000000000000
[   10.759978][  T194] R10: 0000000000000000 R11: 0000000000000246 R12: 0000562992d34ffd
[   10.759979][  T194] R13: 00005629b9f2f820 R14: 0000000000040000 R15: 0000000000000000
| [   12.262010][  T211] softirqs last disabled at (675): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   12.262012][  T211] Preemption disabled at:
| [   12.262013][  T211] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.262022][  T211] Tainted: [W]=WARN
[   12.262023][  T211] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.262024][  T211] Call Trace:
[   12.262026][  T211]  <TASK>
[   12.262027][  T211]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.262033][  T211]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.262035][  T211]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.262039][  T211]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.262043][  T211]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.262047][  T211]  __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))
[   12.262050][  T211]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.262057][  T211]  ? 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)
[   12.262060][  T211]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.262064][  T211]  put_chars (drivers/char/virtio_console.c:1176)
[   12.262066][  T211]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.262070][  T211]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.262074][  T211]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.262078][  T211]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.262080][  T211]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.262084][  T211]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.262086][  T211]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   12.262089][  T211]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.262092][  T211]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.262096][  T211]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.262100][  T211]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.262102][  T211]  ? 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))
[   12.262105][  T211]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.262107][  T211]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.262111][  T211]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.262115][  T211]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.262117][  T211]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.262122][  T211]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.262125][  T211]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.262127][  T211]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.262128][  T211]  ? 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)
[   12.262132][  T211]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.262134][  T211]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.262137][  T211]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.262140][  T211]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.262141][  T211]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.262146][  T211]  _printk (kernel/printk/printk.c:2504)
[   12.262150][  T211]  ? snapshot_read.cold (user.c:?)
[   12.262153][  T211]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.262156][  T211]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5593)
[   12.262160][  T211] pktgen_if_write.cold (net/core/pktgen.c:1001 (discriminator 1)) pktgen
[   12.262165][  T211]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.262170][  T211]  ? pktgen_thread_worker (net/core/pktgen.c:3767 (discriminator 11)) pktgen
[   12.262172][  T211]  ? file_update_time_flags (fs/inode.c:2484)
[   12.262176][  T211]  ? fault_dirty_shared_page (mm/memory.c:3858)
[   12.262181][  T211]  ? do_pte_missing (mm/memory.c:6092 mm/memory.c:6138 mm/memory.c:4700)
[   12.262185][  T211]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.262187][  T211]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.262190][  T211]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.262193][  T211]  ? mksaveddirty_shift (./arch/x86/include/asm/pgtable.h:373)
[   12.262198][  T211]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.262200][  T211]  ? ksys_write (fs/read_write.c:739)
[   12.262204][  T211]  proc_reg_write (fs/proc/inode.c:330 fs/proc/inode.c:342)
[   12.262209][  T211]  vfs_write (fs/read_write.c:685)
[   12.262213][  T211]  ksys_write (fs/read_write.c:739)
[   12.262215][  T211]  ? __ia32_sys_read (fs/read_write.c:723)
[   12.262217][  T211]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.262219][  T211]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.262222][  T211]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.262226][  T211]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.262229][  T211]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.262231][  T211] RIP: 0033:0x7f0441e4f54e
[   12.262234][  T211] 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
[   12.262236][  T211] RSP: 002b:00007ffd1cab55c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   12.262239][  T211] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0441e4f54e
[   12.262240][  T211] RDX: 0000000000000000 RSI: 000000000040d760 RDI: 0000000000000007
[   12.262241][  T211] RBP: 00007ffd1cab55d0 R08: 0000000000000000 R09: 0000000000000000
[   12.262242][  T211] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd1cab5ac0


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