======================================
| [  261.317140][ T1638] ==================================================================
| [  261.317517][ T1638] BUG: KASAN: null-ptr-deref in try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
| [  261.317885][ T1638] Write of size 8 at addr 0000000000000000 by task ip/1638
| [  261.318210][ T1638]
[  261.318341][ T1638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  261.318348][ T1638] Call Trace:
[  261.318354][ T1638]  <TASK>
[  261.318356][ T1638]  dump_stack_lvl (lib/dump_stack.c:123)
[  261.318382][ T1638]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  261.318385][ T1638]  kasan_report (mm/kasan/report.c:597)
[  261.318397][ T1638]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  261.318402][ T1638]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[  261.318405][ T1638]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  261.318411][ T1638]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  261.318414][ T1638]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  261.318418][ T1638]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  261.318421][ T1638]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  261.318429][ T1638]  __cancel_work_sync (kernel/workqueue.c:4383)
[  261.318432][ T1638]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  261.318446][ T1638]  ? netdev_notify_peers (net/core/dev.c:1891)
[  261.318450][ T1638]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  261.318458][ T1638]  __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924)
[  261.318461][ T1638]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[  261.318469][ T1638]  ? netif_set_allmulti (net/core/dev.c:9890)
[  261.318471][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.318479][ T1638]  netif_change_flags (net/core/dev.c:9989)
[  261.318483][ T1638]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  261.318490][ T1638]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  261.318498][ T1638]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  261.318507][ T1638]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  261.318513][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.318518][ T1638]  ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113)
[  261.318522][ T1638]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  261.318525][ T1638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  261.318532][ T1638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  261.318535][ T1638]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  261.318539][ T1638]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  261.318556][ T1638]  ? __create_object (mm/kmemleak.c:786)
[  261.318562][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.318565][ T1638]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  261.318568][ T1638]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  261.318572][ T1638]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  261.318585][ T1638]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  261.318591][ T1638]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  261.318596][ T1638]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  261.318598][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.318604][ T1638]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  261.318608][ T1638]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  261.318611][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.318615][ T1638]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  261.318618][ T1638]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  261.318622][ T1638]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  261.318624][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.318631][ T1638]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  261.318640][ T1638]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  261.318643][ T1638]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  261.318650][ T1638]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  261.318653][ T1638]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[  261.318657][ T1638]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  261.318661][ T1638]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  261.318665][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.318670][ T1638]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  261.318675][ T1638]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  261.318678][ T1638]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  261.318691][ T1638]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  261.318694][ T1638]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  261.318704][ T1638]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  261.318707][ T1638]  ? __copy_msghdr (net/socket.c:2556)
[  261.318714][ T1638]  ___sys_sendmsg (net/socket.c:2686)
[  261.318718][ T1638]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  261.318721][ T1638]  ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125)
[  261.318728][ T1638]  ? copy_msghdr_from_user (net/socket.c:2673)
[  261.318733][ T1638]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  261.318737][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.318744][ T1638]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  261.318748][ T1638]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  261.318761][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.318767][ T1638]  __sys_sendmsg (net/socket.c:2716)
[  261.318771][ T1638]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  261.318774][ T1638]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  261.318782][ T1638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  261.318786][ T1638]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  261.318792][ T1638]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  261.318800][ T1638] RIP: 0033:0x7f90c06841d7
[  261.318812][ T1638] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[  261.318816][ T1638] RSP: 002b:00007ffcb7b0be08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  261.318824][ T1638] RAX: ffffffffffffffda RBX: 00007ffcb7b0c530 RCX: 00007f90c06841d7
[  261.318826][ T1638] RDX: 0000000000000000 RSI: 00007ffcb7b0be70 RDI: 0000000000000005
[  261.318828][ T1638] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  261.318831][ T1638] R10: 00007f90c0580f60 R11: 0000000000000246 R12: 0000000000000003
[  261.318833][ T1638] R13: 00000000691cbe4b R14: 0000000000499600 R15: 0000000000000000
| [  261.340102][ T1638] #PF: error_code(0x0002) - not-present page
| [  261.340366][ T1638] PGD 99a5067 P4D 99a5067 PUD fb08067 PMD 0
| [  261.340740][ T1638] Oops: Oops: 0002 [#1] SMP KASAN
| [  261.341383][ T1638] Tainted: [B]=BAD_PAGE
[  261.341652][ T1638] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  261.341926][ T1638] RIP: 0010:try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[  261.342193][ T1638] Code: 00 41 89 c0 b8 01 00 00 00 45 85 c0 74 0f 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 be 08 00 00 00 48 89 df e8 7f 7f 81 00 <f0> 48 0f ba 2b 00 72 11 48 83 c4 10 31 c0 5b 5d 41 5c 41 5d 41 5e
All code
========
   0:	00 41 89             	add    %al,-0x77(%rcx)
   3:	c0 b8 01 00 00 00 45 	sarb   $0x45,0x1(%rax)
   a:	85 c0                	test   %eax,%eax
   c:	74 0f                	je     0x1d
   e:	48 83 c4 10          	add    $0x10,%rsp
  12:	5b                   	pop    %rbx
  13:	5d                   	pop    %rbp
  14:	41 5c                	pop    %r12
  16:	41 5d                	pop    %r13
  18:	41 5e                	pop    %r14
  1a:	41 5f                	pop    %r15
  1c:	c3                   	ret
  1d:	be 08 00 00 00       	mov    $0x8,%esi
  22:	48 89 df             	mov    %rbx,%rdi
  25:	e8 7f 7f 81 00       	call   0x817fa9
  2a:*	f0 48 0f ba 2b 00    	lock btsq $0x0,(%rbx)		<-- trapping instruction
  30:	72 11                	jb     0x43
  32:	48 83 c4 10          	add    $0x10,%rsp
  36:	31 c0                	xor    %eax,%eax
  38:	5b                   	pop    %rbx
  39:	5d                   	pop    %rbp
  3a:	41 5c                	pop    %r12
  3c:	41 5d                	pop    %r13
  3e:	41 5e                	pop    %r14

Code starting with the faulting instruction
===========================================
   0:	f0 48 0f ba 2b 00    	lock btsq $0x0,(%rbx)
   6:	72 11                	jb     0x19
   8:	48 83 c4 10          	add    $0x10,%rsp
   c:	31 c0                	xor    %eax,%eax
   e:	5b                   	pop    %rbx
   f:	5d                   	pop    %rbp
  10:	41 5c                	pop    %r12
  12:	41 5d                	pop    %r13
  14:	41 5e                	pop    %r14
[  261.343033][ T1638] RSP: 0018:ffffc90003e76f40 EFLAGS: 00010046
[  261.343298][ T1638] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffb3e4090a
[  261.343720][ T1638] RDX: fffffbfff700f2cd RSI: 0000000000000008 RDI: ffffffffb8079660
[  261.344034][ T1638] RBP: ffffc90003e76fa8 R08: 0000000000000001 R09: fffffbfff700f2cc
[  261.344454][ T1638] R10: ffffffffb8079667 R11: ffffc90003e76a00 R12: 0000000000000000
[  261.344767][ T1638] R13: 0000000000000282 R14: ffff888007774000 R15: dffffc0000000000
[  261.345085][ T1638] FS:  00007f90c04b6800(0000) GS:ffff88807e1f2000(0000) knlGS:0000000000000000
[  261.345561][ T1638] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  261.345825][ T1638] CR2: 0000000000000000 CR3: 000000000f7de005 CR4: 0000000000772ef0
[  261.346136][ T1638] PKRU: 55555554
[  261.346410][ T1638] Call Trace:
[  261.346580][ T1638]  <TASK>
[  261.346704][ T1638]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[  261.346921][ T1638]  ? enable_delayed_work (kernel/workqueue.c:4359)
[  261.347130][ T1638]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[  261.347444][ T1638]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  261.347653][ T1638]  __cancel_work_sync (kernel/workqueue.c:4383)
[  261.347862][ T1638]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[  261.348079][ T1638]  ? netdev_notify_peers (net/core/dev.c:1891)
[  261.348396][ T1638]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  261.348605][ T1638]  __dev_change_flags (./include/linux/list.h:119 ./include/linux/list.h:223 ./include/linux/list.h:237 net/core/dev.c:1945 net/core/dev.c:9924)
[  261.348811][ T1638]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[  261.349020][ T1638]  ? netif_set_allmulti (net/core/dev.c:9890)
[  261.349329][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.349537][ T1638]  netif_change_flags (net/core/dev.c:9989)
[  261.349743][ T1638]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[  261.349956][ T1638]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[  261.350166][ T1638]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[  261.350375][ T1638]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[  261.350583][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.350793][ T1638]  ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113)
[  261.351105][ T1638]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[  261.351311][ T1638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  261.351525][ T1638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  261.351731][ T1638]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[  261.352044][ T1638]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[  261.352251][ T1638]  ? __create_object (mm/kmemleak.c:786)
[  261.352458][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.352665][ T1638]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[  261.352976][ T1638]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[  261.353182][ T1638]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[  261.353397][ T1638]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[  261.353603][ T1638]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[  261.353917][ T1638]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  261.354121][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.354328][ T1638]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  261.354533][ T1638]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[  261.354840][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.355047][ T1638]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[  261.355258][ T1638]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[  261.355466][ T1638]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  261.355777][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.355987][ T1638]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[  261.356193][ T1638]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[  261.356411][ T1638]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[  261.356730][ T1638]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[  261.356936][ T1638]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[  261.357149][ T1638]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[  261.357358][ T1638]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[  261.357671][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.357883][ T1638]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[  261.358093][ T1638]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  261.358300][ T1638]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[  261.358631][ T1638]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[  261.358849][ T1638]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[  261.359063][ T1638]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[  261.359428][ T1638]  ? __copy_msghdr (net/socket.c:2556)
[  261.359642][ T1638]  ___sys_sendmsg (net/socket.c:2686)
[  261.359854][ T1638]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[  261.360064][ T1638]  ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3125)
[  261.360426][ T1638]  ? copy_msghdr_from_user (net/socket.c:2673)
[  261.360634][ T1638]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  261.360847][ T1638]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  261.361061][ T1638]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  261.361373][ T1638]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[  261.361581][ T1638]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  261.361790][ T1638]  __sys_sendmsg (net/socket.c:2716)
[  261.362005][ T1638]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[  261.362366][ T1638]  ? __sys_sendmsg_sock (net/socket.c:2701)
[  261.362588][ T1638]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  261.362795][ T1638]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  261.363013][ T1638]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  261.363373][ T1638] RIP: 0033:0x7f90c06841d7
[  261.363595][ T1638] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[  261.364447][ T1638] RSP: 002b:00007ffcb7b0be08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  261.364765][ T1638] RAX: ffffffffffffffda RBX: 00007ffcb7b0c530 RCX: 00007f90c06841d7
[  261.365183][ T1638] RDX: 0000000000000000 RSI: 00007ffcb7b0be70 RDI: 0000000000000005
[  261.365491][ T1638] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  261.365817][ T1638] R10: 00007f90c0580f60 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
try_to_grab_pending:__cancel_work:__cancel_work_sync:__dev_close_many:__dev_change_flags
kasan_report:kasan_check_range:try_to_grab_pending:__cancel_work:__cancel_work_sync