======================================
| [   24.055454][  T312] ==================================================================
| [   24.055819][  T312] 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)
| [   24.056135][  T312] Write of size 8 at addr 0000000000000000 by task ip/312
| [   24.056391][  T312]
[   24.056502][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.056504][  T312] Call Trace:
[   24.056506][  T312]  <TASK>
[   24.056508][  T312]  dump_stack_lvl (lib/dump_stack.c:123)
[   24.056517][  T312]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   24.056520][  T312]  kasan_report (mm/kasan/report.c:597)
[   24.056527][  T312]  ? try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   24.056532][  T312]  kasan_check_range (mm/kasan/generic.c:194 mm/kasan/generic.c:200)
[   24.056536][  T312]  try_to_grab_pending (./arch/x86/include/asm/bitops.h:136 ./include/asm-generic/bitops/instrumented-atomic.h:72 kernel/workqueue.c:2072)
[   24.056541][  T312]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   24.056544][  T312]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   24.056548][  T312]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   24.056552][  T312]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   24.056558][  T312]  __cancel_work_sync (kernel/workqueue.c:4383)
[   24.056562][  T312]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   24.056571][  T312]  ? netdev_notify_peers (net/core/dev.c:1891)
[   24.056575][  T312]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   24.056581][  T312]  __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)
[   24.056584][  T312]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   24.056591][  T312]  ? netif_set_allmulti (net/core/dev.c:9890)
[   24.056594][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.056600][  T312]  netif_change_flags (net/core/dev.c:9989)
[   24.056604][  T312]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   24.056610][  T312]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   24.056616][  T312]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.056623][  T312]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   24.056628][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.056633][  T312]  ? __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)
[   24.056637][  T312]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   24.056640][  T312]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   24.056645][  T312]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   24.056648][  T312]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   24.056652][  T312]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   24.056658][  T312]  ? __create_object (mm/kmemleak.c:786)
[   24.056661][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.056665][  T312]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   24.056668][  T312]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   24.056671][  T312]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   24.056676][  T312]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   24.056681][  T312]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   24.056686][  T312]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   24.056688][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.056694][  T312]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   24.056698][  T312]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   24.056700][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.056705][  T312]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   24.056707][  T312]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   24.056711][  T312]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   24.056714][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.056721][  T312]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   24.056725][  T312]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   24.056729][  T312]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   24.056736][  T312]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   24.056738][  T312]  ? 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)
[   24.056742][  T312]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   24.056747][  T312]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   24.056751][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.056756][  T312]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   24.056761][  T312]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   24.056764][  T312]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   24.056770][  T312]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   24.056773][  T312]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   24.056780][  T312]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   24.056783][  T312]  ? __copy_msghdr (net/socket.c:2556)
[   24.056790][  T312]  ___sys_sendmsg (net/socket.c:2686)
[   24.056793][  T312]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   24.056796][  T312]  ? __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)
[   24.056804][  T312]  ? copy_msghdr_from_user (net/socket.c:2673)
[   24.056812][  T312]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   24.056818][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.056823][  T312]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   24.056827][  T312]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   24.056833][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.056839][  T312]  __sys_sendmsg (net/socket.c:2716)
[   24.056842][  T312]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   24.056846][  T312]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   24.056854][  T312]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   24.056858][  T312]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   24.056865][  T312]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   24.056869][  T312] RIP: 0033:0x7f70a48cf1d7
[   24.056873][  T312] 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)
[   24.056876][  T312] RSP: 002b:00007ffe0da988c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.056880][  T312] RAX: ffffffffffffffda RBX: 00007ffe0da98ff0 RCX: 00007f70a48cf1d7
[   24.056883][  T312] RDX: 0000000000000000 RSI: 00007ffe0da98930 RDI: 0000000000000005
[   24.056885][  T312] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   24.056886][  T312] R10: 00007f70a47cbf60 R11: 0000000000000246 R12: 0000000000000003
[   24.056888][  T312] R13: 00000000691ccdec R14: 0000000000499600 R15: 0000000000000000
| [   24.080844][  T312] #PF: error_code(0x0002) - not-present page
| [   24.081098][  T312] PGD c29c067 P4D c29c067 PUD 4c07067 PMD 0
| [   24.081346][  T312] Oops: Oops: 0002 [#1] SMP KASAN
| [   24.081979][  T312] Tainted: [B]=BAD_PAGE
[   24.082133][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.082379][  T312] 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)
[   24.082643][  T312] 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
[   24.083360][  T312] RSP: 0018:ffffc900004f6f40 EFLAGS: 00010046
[   24.083607][  T312] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffaec4090a
[   24.083905][  T312] RDX: fffffbfff65cf2cd RSI: 0000000000000008 RDI: ffffffffb2e79660
[   24.084203][  T312] RBP: ffffc900004f6fa8 R08: 0000000000000001 R09: fffffbfff65cf2cc
[   24.084496][  T312] R10: ffffffffb2e79667 R11: ffffc900004f6a00 R12: 0000000000000000
[   24.084791][  T312] R13: 0000000000000282 R14: ffff88800a7ac000 R15: dffffc0000000000
[   24.085201][  T312] FS:  00007f70a4701800(0000) GS:ffff8880834f2000(0000) knlGS:0000000000000000
[   24.085544][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.085793][  T312] CR2: 0000000000000000 CR3: 000000000c3e4001 CR4: 0000000000772ef0
[   24.086198][  T312] PKRU: 55555554
[   24.086343][  T312] Call Trace:
[   24.086488][  T312]  <TASK>
[   24.086591][  T312]  __cancel_work (kernel/workqueue.c:2161 kernel/workqueue.c:4364)
[   24.086899][  T312]  ? enable_delayed_work (kernel/workqueue.c:4359)
[   24.087106][  T312]  ? queue_delayed_work_on (kernel/workqueue.c:2590)
[   24.087296][  T312]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   24.087490][  T312]  __cancel_work_sync (kernel/workqueue.c:4383)
[   24.087784][  T312]  __dev_close_many (net/core/dev.c:1879 (discriminator 2) net/core/dev.c:1932 (discriminator 2))
[   24.087980][  T312]  ? netdev_notify_peers (net/core/dev.c:1891)
[   24.088173][  T312]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   24.088371][  T312]  __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)
[   24.088665][  T312]  ? __free_zapped_classes (kernel/locking/lockdep.c:5343)
[   24.088856][  T312]  ? netif_set_allmulti (net/core/dev.c:9890)
[   24.089053][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.089244][  T312]  netif_change_flags (net/core/dev.c:9989)
[   24.089436][  T312]  do_setlink.constprop.0 (net/core/rtnetlink.c:3158)
[   24.089628][  T312]  ? rtnl_newlink_create (net/core/rtnetlink.c:3036)
[   24.089832][  T312]  ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.090035][  T312]  ? validate_chain (kernel/locking/lockdep.c:3801 kernel/locking/lockdep.c:3821 kernel/locking/lockdep.c:3876)
[   24.090335][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.090526][  T312]  ? __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)
[   24.090718][  T312]  ? __mutex_handoff (kernel/locking/mutex.c:88)
[   24.090907][  T312]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   24.091214][  T312]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   24.091411][  T312]  ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21))
[   24.091608][  T312]  ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:739 kernel/locking/mutex.c:760)
[   24.091798][  T312]  ? __create_object (mm/kmemleak.c:786)
[   24.092105][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.092295][  T312]  ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4071)
[   24.092486][  T312]  ? ww_mutex_lock (kernel/locking/mutex.c:759)
[   24.092675][  T312]  ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21))
[   24.092970][  T312]  ? __rtnl_newlink (net/core/rtnetlink.c:3922)
[   24.093163][  T312]  rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4073)
[   24.093355][  T312]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   24.093545][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.093841][  T312]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   24.094079][  T312]  ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/core/rtnetlink.c:6956)
[   24.094367][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.094659][  T312]  ? __rtnl_newlink (net/core/rtnetlink.c:3963)
[   24.095133][  T312]  rtnetlink_rcv_msg (net/core/rtnetlink.c:6958)
[   24.095435][  T312]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   24.095725][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.096029][  T312]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   24.096516][  T312]  ? rtnl_port_fill (net/core/rtnetlink.c:6861)
[   24.096810][  T312]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   24.097110][  T312]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   24.097407][  T312]  ? 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)
[   24.097879][  T312]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   24.098182][  T312]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   24.098480][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.098777][  T312]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   24.099261][  T312]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   24.099548][  T312]  ? __import_iovec (lib/iov_iter.c:1346 lib/iov_iter.c:1361)
[   24.099844][  T312]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   24.100080][  T312]  ____sys_sendmsg (net/socket.c:727 net/socket.c:742 net/socket.c:2630)
[   24.100388][  T312]  ? get_timestamp.constprop.0 (net/socket.c:2576)
[   24.100634][  T312]  ? __copy_msghdr (net/socket.c:2556)
[   24.100832][  T312]  ___sys_sendmsg (net/socket.c:2686)
[   24.101025][  T312]  ? kasan_record_aux_stack (mm/kasan/generic.c:559)
[   24.101319][  T312]  ? __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)
[   24.101573][  T312]  ? copy_msghdr_from_user (net/socket.c:2673)
[   24.101766][  T312]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   24.101962][  T312]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   24.102265][  T312]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   24.102456][  T312]  ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 ./include/linux/mmzone.h:2197 arch/x86/mm/physaddr.c:65)
[   24.102648][  T312]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   24.102847][  T312]  __sys_sendmsg (net/socket.c:2716)
[   24.103141][  T312]  ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3148)
[   24.103381][  T312]  ? __sys_sendmsg_sock (net/socket.c:2701)
[   24.103576][  T312]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   24.103888][  T312]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   24.104102][  T312]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   24.104341][  T312] RIP: 0033:0x7f70a48cf1d7
[   24.104542][  T312] 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)
[   24.105405][  T312] RSP: 002b:00007ffe0da988c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.106011][  T312] RAX: ffffffffffffffda RBX: 00007ffe0da98ff0 RCX: 00007f70a48cf1d7
[   24.106449][  T312] RDX: 0000000000000000 RSI: 00007ffe0da98930 RDI: 0000000000000005
[   24.106892][  T312] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   24.107532][  T312] R10: 00007f70a47cbf60 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