======================================
| WAIT TIMEOUT stdout
|
| [ 3988.226862][T28877] general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [ 3988.227250][T28877] KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
[ 3988.227684][T28877] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[3988.228002][T28877] RIP: 0010:nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) 
[ 3988.228185][T28877] 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
[ 3988.228667][T28877] RSP: 0018:ffffc900012bf4f8 EFLAGS: 00010203
[ 3988.228840][T28877] RAX: dffffc0000000000 RBX: 0000000000000059 RCX: ffffc900012bf560
[ 3988.229063][T28877] RDX: 000000000000000b RSI: ffffc900012bf5c0 RDI: 000000000000005d
[ 3988.229272][T28877] RBP: ffff888022bf7100 R08: ffffc900012bf840 R09: 0000000000000004
[ 3988.229474][T28877] R10: dffffc0000000000 R11: 0000000000000001 R12: ffffc900012bf570
[ 3988.229677][T28877] R13: 0000000000000000 R14: ffffc900012bf840 R15: ffffc900012bf5c0
[ 3988.229883][T28877] FS:  00007fa8c0c05c40(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[ 3988.230118][T28877] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3988.230294][T28877] CR2: 000055ac4befcdec CR3: 0000000020400005 CR4: 0000000000770ef0
[ 3988.230498][T28877] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3988.230700][T28877] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3988.230910][T28877] PKRU: 55555554
[ 3988.231012][T28877] Call Trace:
[ 3988.231115][T28877]  <TASK>
[3988.231185][T28877] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[3988.231297][T28877] ? exc_general_protection (arch/x86/kernel/traps.c:701 arch/x86/kernel/traps.c:643) 
[3988.231440][T28877] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:564) 
[3988.231580][T28877] ? nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) 
[3988.231716][T28877] ? __nla_parse (lib/nlattr.c:732) 
[3988.231852][T28877] rtm_del_nexthop (net/ipv4/nexthop.c:3264) 
[3988.231989][T28877] ? __pfx_rtm_del_nexthop (net/ipv4/nexthop.c:3245) 
[3988.232126][T28877] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[3988.232268][T28877] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) 
[3988.232405][T28877] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[3988.232548][T28877] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) 
[3988.232683][T28877] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[3988.232818][T28877] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[3988.232955][T28877] rtnetlink_rcv_msg (net/core/rtnetlink.c:6595) 
[3988.233090][T28877] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) 
[3988.233231][T28877] ? 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) 
[3988.233369][T28877] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[3988.233473][T28877] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[3988.233611][T28877] netlink_rcv_skb (net/netlink/af_netlink.c:2559) 
[3988.233749][T28877] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) 
[3988.233893][T28877] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) 
[3988.234026][T28877] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[3988.234162][T28877] ? __pfx___netlink_lookup (net/netlink/af_netlink.c:512) 
[3988.234296][T28877] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[3988.234432][T28877] ? 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) 
[3988.234572][T28877] ? 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) 
[3988.234708][T28877] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/netlink/af_netlink.c:340) 
[3988.234842][T28877] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) 
[3988.234982][T28877] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) 
[3988.235123][T28877] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[3988.235263][T28877] netlink_sendmsg (net/netlink/af_netlink.c:1905) 
[3988.235409][T28877] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) 
[3988.235550][T28877] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[3988.235699][T28877] ? __import_iovec (lib/iov_iter.c:1261 lib/iov_iter.c:1277) 
[3988.235841][T28877] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) 
[3988.235988][T28877] ? __pfx_____sys_sendmsg (net/socket.c:2530) 
[3988.236123][T28877] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) 
[3988.236312][T28877] ___sys_sendmsg (net/socket.c:2640) 
[3988.236458][T28877] ? __pfx____sys_sendmsg (net/socket.c:2627) 
[3988.236600][T28877] ? kfree (./include/trace/events/kmem.h:94 mm/slub.c:4396) 
[3988.236707][T28877] ? ___sys_recvmsg (net/socket.c:2835) 
[3988.236846][T28877] ? __pfx____sys_recvmsg (net/socket.c:2835) 
[3988.236991][T28877] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[3988.237133][T28877] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[3988.237267][T28877] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[3988.237403][T28877] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[3988.237537][T28877] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[3988.237678][T28877] __sys_sendmsg (./include/linux/file.h:32 net/socket.c:2669) 
[3988.237812][T28877] ? __pfx___sys_sendmsg (net/socket.c:2655) 
[3988.237953][T28877] ? __pfx_rseq_ip_fixup (kernel/rseq.c:275) 
[3988.238101][T28877] ? rseq_update_cpu_node_id (./include/trace/events/rseq.h:11 kernel/rseq.c:108) 
[3988.238239][T28877] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3988.238378][T28877] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[ 3988.238548][T28877] RIP: 0033:0x7fa8c0e0e7b7
[ 3988.238691][T28877] 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)
[ 3988.239176][T28877] RSP: 002b:00007fff5e5f9198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 3988.239385][T28877] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fa8c0e0e7b7
[ 3988.239589][T28877] RDX: 0000000000000000 RSI: 00007fff5e5f9200 RDI: 0000000000000006
[ 3988.239793][T28877] RBP: 00007fff5e5f9498 R08: 0000000000000004 R09: 0000000000000078
[ 3988.239995][T28877] R10: 000000000000009b R11: 0000000000000246 R12: 0000000000495540


Finger prints:
nh_valid_get_del_req:rtm_del_nexthop:rtnetlink_rcv_msg:netlink_rcv_skb