======================================
| WAIT TIMEOUT stdout
|
| [ 1780.996412][T13262] general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [ 1780.996781][T13262] KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
[ 1780.997182][T13262] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[1780.997452][T13262] RIP: 0010:nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) 
[ 1780.997626][T13262] Code: ea 03 80 3c 02 00 0f 85 7a 02 00 00 48 8b 5e 70 48 85 db 74 6b 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 51
All code
========
   0:	ea                   	(bad)
   1:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   7:	85 7a 02             	test   %edi,0x2(%rdx)
   a:	00 00                	add    %al,(%rax)
   c:	48 8b 5e 70          	mov    0x70(%rsi),%rbx
  10:	48 85 db             	test   %rbx,%rbx
  13:	74 6b                	je     0x80
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df 
  1f:	48 8d 7b 04          	lea    0x4(%rbx),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:*	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx		<-- trapping instruction
  2e:	48 89 f8             	mov    %rdi,%rax
  31:	83 e0 07             	and    $0x7,%eax
  34:	83 c0 03             	add    $0x3,%eax
  37:	38 d0                	cmp    %dl,%al
  39:	7c 08                	jl     0x43
  3b:	84 d2                	test   %dl,%dl
  3d:	0f                   	.byte 0xf
  3e:	85                   	.byte 0x85
  3f:	51                   	push   %rcx

Code starting with the faulting instruction
===========================================
   0:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   4:	48 89 f8             	mov    %rdi,%rax
   7:	83 e0 07             	and    $0x7,%eax
   a:	83 c0 03             	add    $0x3,%eax
   d:	38 d0                	cmp    %dl,%al
   f:	7c 08                	jl     0x19
  11:	84 d2                	test   %dl,%dl
  13:	0f                   	.byte 0xf
  14:	85                   	.byte 0x85
  15:	51                   	push   %rcx
[ 1780.998067][T13262] RSP: 0018:ffffc9000223f4f8 EFLAGS: 00010203
[ 1780.998234][T13262] RAX: dffffc0000000000 RBX: 0000000000000059 RCX: ffffc9000223f560
[ 1780.998422][T13262] RDX: 000000000000000b RSI: ffffc9000223f5c0 RDI: 000000000000005d
[ 1780.998615][T13262] RBP: ffff888012ea6a80 R08: ffffc9000223f840 R09: 0000000000000004
[ 1780.998803][T13262] R10: dffffc0000000000 R11: 0000000000000001 R12: ffffc9000223f570
[ 1780.998986][T13262] R13: 0000000000000000 R14: ffffc9000223f840 R15: ffffc9000223f5c0
[ 1780.999173][T13262] FS:  00007efe09b50c40(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[ 1780.999393][T13262] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1780.999558][T13262] CR2: 0000000000eb6928 CR3: 0000000012a68006 CR4: 0000000000770ef0
[ 1780.999746][T13262] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 1780.999933][T13262] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 1781.000129][T13262] PKRU: 55555554
[ 1781.000224][T13262] Call Trace:
[ 1781.000322][T13262]  <TASK>
[1781.000389][T13262] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[1781.000495][T13262] ? exc_general_protection (arch/x86/kernel/traps.c:701 arch/x86/kernel/traps.c:643) 
[1781.000629][T13262] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:564) 
[1781.000764][T13262] ? nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) 
[1781.000890][T13262] ? __nla_parse (lib/nlattr.c:732) 
[1781.001018][T13262] rtm_del_nexthop (net/ipv4/nexthop.c:3264) 
[1781.001146][T13262] ? __pfx_rtm_del_nexthop (net/ipv4/nexthop.c:3245) 
[1781.001267][T13262] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[1781.001390][T13262] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) 
[1781.001515][T13262] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[1781.001643][T13262] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) 
[1781.001770][T13262] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[1781.001893][T13262] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[1781.002022][T13262] rtnetlink_rcv_msg (net/core/rtnetlink.c:6595) 
[1781.002144][T13262] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) 
[1781.002266][T13262] ? 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) 
[1781.002390][T13262] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[1781.002488][T13262] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[1781.002618][T13262] netlink_rcv_skb (net/netlink/af_netlink.c:2559) 
[1781.002746][T13262] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) 
[1781.002875][T13262] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) 
[1781.003008][T13262] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[1781.003136][T13262] ? __pfx___netlink_lookup (net/netlink/af_netlink.c:512) 
[1781.003257][T13262] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[1781.003378][T13262] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[1781.003500][T13262] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[1781.003629][T13262] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/netlink/af_netlink.c:340) 
[1781.003755][T13262] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) 
[1781.003878][T13262] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) 
[1781.004004][T13262] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[1781.004131][T13262] netlink_sendmsg (net/netlink/af_netlink.c:1905) 
[1781.004254][T13262] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) 
[1781.004375][T13262] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[1781.004500][T13262] ? __import_iovec (lib/iov_iter.c:1261 lib/iov_iter.c:1277) 
[1781.004624][T13262] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) 
[1781.004754][T13262] ? __pfx_____sys_sendmsg (net/socket.c:2530) 
[1781.004885][T13262] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) 
[1781.005045][T13262] ___sys_sendmsg (net/socket.c:2640) 
[1781.005176][T13262] ? __pfx____sys_sendmsg (net/socket.c:2627) 
[1781.005304][T13262] ? kfree (./include/trace/events/kmem.h:94 mm/slub.c:4396) 
[1781.005401][T13262] ? ___sys_recvmsg (net/socket.c:2835) 
[1781.005524][T13262] ? __pfx____sys_recvmsg (net/socket.c:2835) 
[1781.005646][T13262] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[1781.005777][T13262] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[1781.005901][T13262] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[1781.006022][T13262] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[1781.006144][T13262] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[1781.006272][T13262] __sys_sendmsg (./include/linux/file.h:32 net/socket.c:2669) 
[1781.006393][T13262] ? __pfx___sys_sendmsg (net/socket.c:2655) 
[1781.006515][T13262] ? __pfx_rseq_ip_fixup (kernel/rseq.c:275) 
[1781.006644][T13262] ? rseq_update_cpu_node_id (./include/trace/events/rseq.h:11 kernel/rseq.c:108) 
[1781.006768][T13262] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[1781.006981][T13262] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[ 1781.007135][T13262] RIP: 0033:0x7efe09d597b7
[ 1781.007270][T13262] Code: 0a 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:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   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)
[ 1781.007789][T13262] RSP: 002b:00007ffe0df8a7b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1781.007977][T13262] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007efe09d597b7
[ 1781.008232][T13262] RDX: 0000000000000000 RSI: 00007ffe0df8a820 RDI: 0000000000000006
[ 1781.008416][T13262] RBP: 00007ffe0df8aab8 R08: 0000000000000004 R09: 0000000000000078
[ 1781.008603][T13262] R10: 000000000000009b R11: 0000000000000246 R12: 0000000000495540


Finger prints:
nh_valid_get_del_req:rtm_del_nexthop:rtnetlink_rcv_msg:netlink_rcv_skb