======================================
| [  358.133799][    C0] ==================================================================
| [ 358.134053][ C0] BUG: KASAN: null-ptr-deref in sock_def_write_space_wfree (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/core/sock.c:3397) 
| [  358.134281][    C0] Read of size 8 at addr 0000000000000008 by task fq_band_pktlimi/2649
| [  358.134498][    C0]
[  358.134843][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  358.135167][    C0] Call Trace:
[  358.135288][    C0]  <IRQ>
[ 358.135366][ C0] dump_stack_lvl (lib/dump_stack.c:117) 
[ 358.135522][ C0] kasan_report (mm/kasan/report.c:603) 
[ 358.135637][ C0] ? sock_def_write_space_wfree (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/core/sock.c:3397) 
[ 358.135821][ C0] kasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189) 
[ 358.135966][ C0] sock_def_write_space_wfree (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/core/sock.c:3397) 
[ 358.136109][ C0] sock_wfree (./include/linux/rcupdate.h:810 net/core/sock.c:2471) 
[ 358.136223][ C0] skb_release_head_state (net/core/skbuff.c:1162 (discriminator 3)) 
[ 358.136370][ C0] consume_skb (net/core/skbuff.c:1174 net/core/skbuff.c:1189 net/core/skbuff.c:1405 net/core/skbuff.c:1399) 
[ 358.136479][ C0] dummy_xmit (drivers/net/dummy.c:66) 
[ 358.136593][ C0] ? trace_net_dev_start_xmit (./include/trace/events/net.h:14 (discriminator 52)) 
[ 358.136738][ C0] dev_hard_start_xmit (./include/linux/netdevice.h:4875 ./include/linux/netdevice.h:4889 net/core/dev.c:3563 net/core/dev.c:3579) 
[ 358.136885][ C0] sch_direct_xmit (net/sched/sch_generic.c:343) 
[ 358.137030][ C0] ? __pfx_sch_direct_xmit (net/sched/sch_generic.c:318) 
[ 358.137180][ C0] __qdisc_run (net/sched/sch_generic.c:416) 
[ 358.137324][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 358.137476][ C0] ? __pfx___qdisc_run (net/sched/sch_generic.c:412) 
[ 358.137618][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 358.137765][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 358.137914][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 358.138057][ C0] ? net_tx_action (./include/linux/spinlock.h:352 net/core/dev.c:5250) 
[ 358.138200][ C0] net_tx_action (./include/net/sch_generic.h:217 ./include/net/pkt_sched.h:128 ./include/net/pkt_sched.h:124 net/core/dev.c:5266) 
[ 358.138345][ C0] __do_softirq (kernel/softirq.c:554) 
[ 358.138491][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 358.138600][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[  358.138745][    C0]  </IRQ>
[  358.138819][    C0]  <TASK>
[ 358.138895][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 358.139073][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 358.139260][ C0] Code: 10 e8 b1 00 79 fd 48 89 ef e8 e9 70 79 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 15 5c 0d 77 <74> 0e 5b 5d c3 cc cc cc cc e8 0f d1 9c fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	b1 00                	mov    $0x0,%cl
   4:	79 fd                	jns    0x3
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 e9 70 79 fd       	call   0xfffffffffd7970f7
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 15 5c 0d 77 	decl   %gs:0x770d5c15(%rip)        # 0x770d5c3f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 0f d1 9c fd       	call   0xfffffffffd9cd147
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 0f d1 9c fd       	call   0xfffffffffd9cd11d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  358.139764][    C0] RSP: 0018:ffffc90000ddf860 EFLAGS: 00000282
[  358.139954][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1847c8b
[  358.140184][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f66dc1
[  358.140404][    C0] RBP: ffff8880010bf940 R08: 0000000000000001 R09: fffffbfff18432af
[  358.140624][    C0] R10: ffffffff8c21957f R11: 0000000000000008 R12: ffff8880010bf940
[  358.140841][    C0] R13: ffffea0000129880 R14: ffff88800196aac0 R15: ffff888004a62238
[ 358.141066][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 358.141248][ C0] get_partial_node.part.0 (mm/slub.c:2623) 
[ 358.141396][ C0] ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 358.141543][ C0] ? kmem_cache_alloc (./include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) 
[ 358.141688][ C0] ? vm_area_dup (kernel/fork.c:482) 
[ 358.141834][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 358.141984][ C0] ? vm_area_dup (kernel/fork.c:482) 
[ 358.142126][ C0] ? kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 358.142272][ C0] kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 358.142423][ C0] vm_area_dup (kernel/fork.c:482) 
[ 358.142532][ C0] dup_mmap (kernel/fork.c:697) 
[ 358.142640][ C0] ? __pfx_dup_mmap (kernel/fork.c:630) 
[ 358.142786][ C0] ? mm_init.isra.0 (./arch/x86/include/asm/atomic.h:97 ./include/linux/atomic/atomic-arch-fallback.h:749 ./include/linux/atomic/atomic-instrumented.h:253 ./include/linux/refcount.h:184 ./include/linux/refcount.h:241 ./include/linux/refcount.h:258 ./include/linux/user_namespace.h:162 kernel/fork.c:1307) 
[ 358.142933][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 358.143079][ C0] copy_mm (kernel/fork.c:1688 kernel/fork.c:1736) 
[ 358.143188][ C0] copy_process (kernel/fork.c:2389) 
[ 358.143331][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 358.143483][ C0] ? __pfx_copy_process (kernel/fork.c:2138) 
[ 358.143629][ C0] ? call_rcu_zapped (kernel/locking/lockdep.c:6200) 
[ 358.143774][ C0] kernel_clone (./include/linux/random.h:26 kernel/fork.c:2797) 
[ 358.143916][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 358.144060][ C0] ? __pfx_kernel_clone (kernel/fork.c:2756) 
[ 358.144205][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 358.144350][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 358.144495][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 358.144661][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 358.144805][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 358.144986][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 358.145134][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 358.145280][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 358.145425][ C0] __do_sys_clone (kernel/fork.c:2928) 
[ 358.145569][ C0] ? __pfx___do_sys_clone (kernel/fork.c:2928) 
[ 358.145716][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 358.145898][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 358.146043][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  358.146223][    C0] RIP: 0033:0x7ff09f8dda17
[ 358.146370][ C0] Code: 00 00 00 f3 0f 1e fa 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 39 41 89 c0 85 c0 75 2a 64 48 8b 04 25 10 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 39                	ja     0x6b
  32:	41 89 c0             	mov    %eax,%r8d
  35:	85 c0                	test   %eax,%eax
  37:	75 2a                	jne    0x63
  39:	64                   	fs
  3a:	48                   	rex.W
  3b:	8b                   	.byte 0x8b
  3c:	04 25                	add    $0x25,%al
  3e:	10 00                	adc    %al,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 39                	ja     0x41
   8:	41 89 c0             	mov    %eax,%r8d
   b:	85 c0                	test   %eax,%eax
   d:	75 2a                	jne    0x39
   f:	64                   	fs
  10:	48                   	rex.W
  11:	8b                   	.byte 0x8b
  12:	04 25                	add    $0x25,%al
  14:	10 00                	adc    %al,(%rax)
[  358.146873][    C0] RSP: 002b:00007ffd4eaed1d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  358.147093][    C0] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff09f8dda17
[  358.147313][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  358.147528][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0027746e6553205c
[  358.147741][    C0] R10: 00007ff09f7c2a10 R11: 0000000000000246 R12: 0000000000000000
[  358.147956][    C0] R13: 00007ffd4eaed310 R14: 000056044ed90f27 R15: 000056047f41bba0
| [  358.148284][    C0] ==================================================================
| [  358.148510][    C0] Disabling lock debugging due to kernel taint
| [  358.148709][    C0] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [  358.149019][    C0] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
[  358.149472][    C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 358.149793][ C0] RIP: 0010:sock_def_write_space_wfree (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/core/sock.c:3397) 
[ 358.149974][ C0] Code: 00 4c 8b bb a0 01 00 00 be 08 00 00 00 4d 8d 77 08 4c 89 f7 e8 e0 0e 8b fe 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 fe 00 00 00 49 8b 47 08 a8 04 0f 85 dc fe ff ff
All code
========
   0:	00 4c 8b bb          	add    %cl,-0x45(%rbx,%rcx,4)
   4:	a0 01 00 00 be 08 00 	movabs 0x8be000001,%al
   b:	00 00 
   d:	4d 8d 77 08          	lea    0x8(%r15),%r14
  11:	4c 89 f7             	mov    %r14,%rdi
  14:	e8 e0 0e 8b fe       	call   0xfffffffffe8b0ef9
  19:	4c 89 f2             	mov    %r14,%rdx
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df 
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)		<-- trapping instruction
  2e:	0f 85 fe 00 00 00    	jne    0x132
  34:	49 8b 47 08          	mov    0x8(%r15),%rax
  38:	a8 04                	test   $0x4,%al
  3a:	0f 85 dc fe ff ff    	jne    0xffffffffffffff1c

Code starting with the faulting instruction
===========================================
   0:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   4:	0f 85 fe 00 00 00    	jne    0x108
   a:	49 8b 47 08          	mov    0x8(%r15),%rax
   e:	a8 04                	test   $0x4,%al
  10:	0f 85 dc fe ff ff    	jne    0xfffffffffffffef2
[  358.150475][    C0] RSP: 0018:ffffc90000007c30 EFLAGS: 00010202
[  358.150660][    C0] RAX: dffffc0000000000 RBX: ffff8880067b08c0 RCX: ffffffff8659564a
[  358.150880][    C0] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8bafda00
[  358.151091][    C0] RBP: ffff8880067b0920 R08: 0000000000000001 R09: fffffbfff175fb40
[  358.151306][    C0] R10: ffffffff8bafda07 R11: 205d304320202020 R12: 0000000000000000
[  358.151517][    C0] R13: ffff8880067b0a40 R14: 0000000000000008 R15: 0000000000000000
[  358.151731][    C0] FS:  00007ff09f7c2740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  358.151986][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  358.152168][    C0] CR2: 000056044edbd054 CR3: 0000000004378006 CR4: 0000000000770ef0
[  358.152469][    C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  358.152675][    C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  358.152890][    C0] PKRU: 55555554
[  358.153088][    C0] Call Trace:
[  358.153199][    C0]  <IRQ>
[ 358.153273][ C0] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[ 358.153382][ C0] ? exc_general_protection (arch/x86/kernel/traps.c:702 arch/x86/kernel/traps.c:644) 
[ 358.153526][ C0] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) 
[ 358.153759][ C0] ? add_taint (./arch/x86/include/asm/bitops.h:60 ./include/asm-generic/bitops/instrumented-atomic.h:29 kernel/panic.c:555) 
[ 358.153866][ C0] ? sock_def_write_space_wfree (./arch/x86/include/asm/bitops.h:206 ./arch/x86/include/asm/bitops.h:238 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 net/core/sock.c:3397) 
[ 358.154049][ C0] sock_wfree (./include/linux/rcupdate.h:810 net/core/sock.c:2471) 
[ 358.154162][ C0] skb_release_head_state (net/core/skbuff.c:1162 (discriminator 3)) 
[ 358.154307][ C0] consume_skb (net/core/skbuff.c:1174 net/core/skbuff.c:1189 net/core/skbuff.c:1405 net/core/skbuff.c:1399) 
[ 358.154500][ C0] dummy_xmit (drivers/net/dummy.c:66) 
[ 358.154651][ C0] ? trace_net_dev_start_xmit (./include/trace/events/net.h:14 (discriminator 52)) 
[ 358.154812][ C0] dev_hard_start_xmit (./include/linux/netdevice.h:4875 ./include/linux/netdevice.h:4889 net/core/dev.c:3563 net/core/dev.c:3579) 
[ 358.154958][ C0] sch_direct_xmit (net/sched/sch_generic.c:343) 
[ 358.155101][ C0] ? __pfx_sch_direct_xmit (net/sched/sch_generic.c:318) 
[ 358.155357][ C0] __qdisc_run (net/sched/sch_generic.c:416) 
[ 358.155497][ C0] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) 
[ 358.155640][ C0] ? __pfx___qdisc_run (net/sched/sch_generic.c:412) 
[ 358.155783][ C0] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:115 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 358.155927][ C0] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 358.156068][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 358.156208][ C0] ? net_tx_action (./include/linux/spinlock.h:352 net/core/dev.c:5250) 
[ 358.156355][ C0] net_tx_action (./include/net/sch_generic.h:217 ./include/net/pkt_sched.h:128 ./include/net/pkt_sched.h:124 net/core/dev.c:5266) 
[ 358.156583][ C0] __do_softirq (kernel/softirq.c:554) 
[ 358.156725][ C0] irq_exit_rcu (kernel/softirq.c:428 kernel/softirq.c:633 kernel/softirq.c:645) 
[ 358.156833][ C0] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) 
[  358.156974][    C0]  </IRQ>
[  358.157047][    C0]  <TASK>
[ 358.157119][ C0] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 358.157393][ C0] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 358.157585][ C0] Code: 10 e8 b1 00 79 fd 48 89 ef e8 e9 70 79 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 15 5c 0d 77 <74> 0e 5b 5d c3 cc cc cc cc e8 0f d1 9c fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	b1 00                	mov    $0x0,%cl
   4:	79 fd                	jns    0x3
   6:	48 89 ef             	mov    %rbp,%rdi
   9:	e8 e9 70 79 fd       	call   0xfffffffffd7970f7
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 15 5c 0d 77 	decl   %gs:0x770d5c15(%rip)        # 0x770d5c3f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 0f d1 9c fd       	call   0xfffffffffd9cd147
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 0f d1 9c fd       	call   0xfffffffffd9cd11d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[  358.158159][    C0] RSP: 0018:ffffc90000ddf860 EFLAGS: 00000282
[  358.158336][    C0] RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1847c8b
[  358.158637][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f66dc1
[  358.158857][    C0] RBP: ffff8880010bf940 R08: 0000000000000001 R09: fffffbfff18432af
[  358.159069][    C0] R10: ffffffff8c21957f R11: 0000000000000008 R12: ffff8880010bf940
[  358.159362][    C0] R13: ffffea0000129880 R14: ffff88800196aac0 R15: ffff888004a62238
[ 358.159670][ C0] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 358.159843][ C0] get_partial_node.part.0 (mm/slub.c:2623) 
[ 358.159990][ C0] ___slab_alloc (mm/slub.c:2583 mm/slub.c:2701 mm/slub.c:3505) 
[ 358.160129][ C0] ? kmem_cache_alloc (./include/linux/sched/mm.h:315 mm/slub.c:3746 mm/slub.c:3827 mm/slub.c:3852) 
[ 358.160359][ C0] ? vm_area_dup (kernel/fork.c:482) 
[ 358.160501][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 358.160644][ C0] ? vm_area_dup (kernel/fork.c:482) 
[ 358.160787][ C0] ? kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 358.160931][ C0] kmem_cache_alloc (mm/slub.c:3610 mm/slub.c:3663 mm/slub.c:3835 mm/slub.c:3852) 
[ 358.161165][ C0] vm_area_dup (kernel/fork.c:482) 
[ 358.161271][ C0] dup_mmap (kernel/fork.c:697) 
[ 358.161380][ C0] ? __pfx_dup_mmap (kernel/fork.c:630) 
[ 358.161608][ C0] ? mm_init.isra.0 (./arch/x86/include/asm/atomic.h:97 ./include/linux/atomic/atomic-arch-fallback.h:749 ./include/linux/atomic/atomic-instrumented.h:253 ./include/linux/refcount.h:184 ./include/linux/refcount.h:241 ./include/linux/refcount.h:258 ./include/linux/user_namespace.h:162 kernel/fork.c:1307) 
[ 358.161747][ C0] ? __raw_spin_lock_init (kernel/locking/spinlock_debug.c:27) 
[ 358.161976][ C0] copy_mm (kernel/fork.c:1688 kernel/fork.c:1736) 
[ 358.162082][ C0] copy_process (kernel/fork.c:2389) 
[ 358.162230][ C0] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 358.162372][ C0] ? __pfx_copy_process (kernel/fork.c:2138) 
[ 358.162513][ C0] ? call_rcu_zapped (kernel/locking/lockdep.c:6200) 
[ 358.162741][ C0] kernel_clone (./include/linux/random.h:26 kernel/fork.c:2797) 
[ 358.162882][ C0] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 358.163023][ C0] ? __pfx_kernel_clone (kernel/fork.c:2756) 
[ 358.163163][ C0] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 358.163307][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 358.163537][ C0] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 358.163762][ C0] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 358.163900][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 358.164077][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 358.164218][ C0] ? lock_acquire (kernel/locking/lockdep.c:5727) 
[ 358.164438][ C0] ? __might_fault (mm/memory.c:6216 mm/memory.c:6209) 
[ 358.164603][ C0] __do_sys_clone (kernel/fork.c:2928) 
[ 358.164745][ C0] ? __pfx___do_sys_clone (kernel/fork.c:2928) 
[ 358.164888][ C0] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 358.165151][ C0] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 358.165294][ C0] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  358.165465][    C0] RIP: 0033:0x7ff09f8dda17
[ 358.165608][ C0] Code: 00 00 00 f3 0f 1e fa 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 39 41 89 c0 85 c0 75 2a 64 48 8b 04 25 10 00
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 f3                	add    %dh,%bl
   4:	0f 1e fa             	nop    %edx
   7:	64 48 8b 04 25 10 00 	mov    %fs:0x10,%rax
   e:	00 00 
  10:	45 31 c0             	xor    %r8d,%r8d
  13:	31 d2                	xor    %edx,%edx
  15:	31 f6                	xor    %esi,%esi
  17:	bf 11 00 20 01       	mov    $0x1200011,%edi
  1c:	4c 8d 90 d0 02 00 00 	lea    0x2d0(%rax),%r10
  23:	b8 38 00 00 00       	mov    $0x38,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 39                	ja     0x6b
  32:	41 89 c0             	mov    %eax,%r8d
  35:	85 c0                	test   %eax,%eax
  37:	75 2a                	jne    0x63
  39:	64                   	fs
  3a:	48                   	rex.W
  3b:	8b                   	.byte 0x8b
  3c:	04 25                	add    $0x25,%al
  3e:	10 00                	adc    %al,(%rax)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 39                	ja     0x41
   8:	41 89 c0             	mov    %eax,%r8d
   b:	85 c0                	test   %eax,%eax
   d:	75 2a                	jne    0x39
   f:	64                   	fs
  10:	48                   	rex.W
  11:	8b                   	.byte 0x8b
  12:	04 25                	add    $0x25,%al
  14:	10 00                	adc    %al,(%rax)
[  358.166185][    C0] RSP: 002b:00007ffd4eaed1d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
[  358.166488][    C0] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007ff09f8dda17
[  358.166706][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
[  358.166917][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0027746e6553205c
[  358.167209][    C0] R10: 00007ff09f7c2a10 R11: 0000000000000246 R12: 0000000000000000


Finger prints:
dump_stack_lvl:kasan_report:kasan_check_range:sock_def_write_space_wfree
sock_def_write_space_wfree:sock_wfree:skb_release_head_state:consume_skb