======================================
| WAIT TIMEOUT stdout
|
| [  933.009012][ T2927] general protection fault, probably for non-canonical address 0xdffffc0000001de2: 0000 [#1] PREEMPT SMP KASAN NOPTI
| [  933.009530][ T2927] KASAN: probably user-memory-access in range [0x000000000000ef10-0x000000000000ef17]
[  933.010268][ T2927] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 933.010763][ T2927] RIP: 0010:nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) 
[ 933.011058][ T2927] 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
[  933.011843][ T2927] RSP: 0018:ffffc90001e0f4f8 EFLAGS: 00010206
[  933.012133][ T2927] RAX: dffffc0000000000 RBX: 000000000000ef0d RCX: ffffc90001e0f560
[  933.012457][ T2927] RDX: 0000000000001de2 RSI: ffffc90001e0f5c0 RDI: 000000000000ef11
[  933.012787][ T2927] RBP: ffff888005eb2400 R08: ffffc90001e0f840 R09: 0000000000000004
[  933.013120][ T2927] R10: dffffc0000000000 R11: 0000000000000001 R12: ffffc90001e0f570
[  933.013451][ T2927] R13: 0000000000000000 R14: ffffc90001e0f840 R15: ffffc90001e0f5c0
[  933.013792][ T2927] FS:  00007fb4a87e7c40(0000) GS:ffff88802fb80000(0000) knlGS:0000000000000000
[  933.014205][ T2927] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  933.014488][ T2927] CR2: 00007fb4a8a40423 CR3: 000000000516c006 CR4: 0000000000770ef0
[  933.014814][ T2927] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  933.015148][ T2927] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  933.015472][ T2927] PKRU: 55555554
[  933.015637][ T2927] Call Trace:
[  933.015795][ T2927]  <TASK>
[ 933.015904][ T2927] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) 
[ 933.016083][ T2927] ? exc_general_protection (arch/x86/kernel/traps.c:701 arch/x86/kernel/traps.c:643) 
[ 933.016299][ T2927] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:564) 
[ 933.016509][ T2927] ? nh_valid_get_del_req (./include/net/netlink.h:1680 net/ipv4/nexthop.c:3235) 
[ 933.016719][ T2927] ? __nla_parse (lib/nlattr.c:732) 
[ 933.016930][ T2927] rtm_del_nexthop (net/ipv4/nexthop.c:3264) 
[ 933.017140][ T2927] ? __pfx_rtm_del_nexthop (net/ipv4/nexthop.c:3245) 
[ 933.017340][ T2927] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 933.017557][ T2927] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6593) 
[ 933.017793][ T2927] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 933.017962][ T2927] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 933.018185][ T2927] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 933.018454][ T2927] rtnetlink_rcv_msg (net/core/rtnetlink.c:6595) 
[ 933.018658][ T2927] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) 
[ 933.018874][ T2927] ? 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) 
[ 933.019091][ T2927] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 933.019249][ T2927] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 933.019470][ T2927] netlink_rcv_skb (net/netlink/af_netlink.c:2559) 
[ 933.019681][ T2927] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6489) 
[ 933.019887][ T2927] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2536) 
[ 933.020092][ T2927] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 933.020304][ T2927] ? __pfx___netlink_lookup (net/netlink/af_netlink.c:512) 
[ 933.020510][ T2927] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 933.020719][ T2927] ? 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) 
[ 933.020940][ T2927] ? 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) 
[ 933.021163][ T2927] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/netlink/af_netlink.c:340) 
[ 933.021384][ T2927] netlink_unicast (net/netlink/af_netlink.c:1335 net/netlink/af_netlink.c:1361) 
[ 933.021609][ T2927] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1346) 
[ 933.021830][ T2927] ? find_held_lock (kernel/locking/lockdep.c:5244) 
[ 933.022059][ T2927] netlink_sendmsg (net/netlink/af_netlink.c:1905) 
[ 933.022274][ T2927] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1824) 
[ 933.022475][ T2927] ? __might_fault (mm/memory.c:6080 mm/memory.c:6073) 
[ 933.022703][ T2927] ? __import_iovec (lib/iov_iter.c:1261 lib/iov_iter.c:1277) 
[ 933.022927][ T2927] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2584) 
[ 933.023139][ T2927] ? __pfx_____sys_sendmsg (net/socket.c:2530) 
[ 933.023343][ T2927] ? __pfx_copy_msghdr_from_user (net/socket.c:2510) 
[ 933.023608][ T2927] ? __lock_release (kernel/locking/lockdep.c:5430) 
[ 933.023824][ T2927] ? do_fault_around (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 mm/memory.c:4719) 
[ 933.024063][ T2927] ___sys_sendmsg (net/socket.c:2640) 
[ 933.024275][ T2927] ? __pte_offset_map (./include/linux/rcupdate.h:751 mm/pgtable-generic.c:285) 
[ 933.024501][ T2927] ? __pfx____sys_sendmsg (net/socket.c:2627) 
[ 933.024717][ T2927] ? 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) 
[ 933.024935][ T2927] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 933.025094][ T2927] ? __pfx_filemap_map_pages (mm/filemap.c:3521) 
[ 933.025313][ T2927] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 933.025532][ T2927] ? usage_skip (kernel/locking/lockdep.c:2295 kernel/locking/lockdep.c:2263) 
[ 933.025765][ T2927] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1357) 
[ 933.025992][ T2927] ? reacquire_held_locks (kernel/locking/lockdep.c:5279) 
[ 933.026210][ T2927] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1357) 
[ 933.026432][ T2927] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 933.026659][ T2927] __sys_sendmsg (./include/linux/file.h:32 net/socket.c:2669) 
[ 933.026876][ T2927] ? __pfx___sys_sendmsg (net/socket.c:2655) 
[ 933.027098][ T2927] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) 
[ 933.027314][ T2927] ? do_user_addr_fault (./include/linux/rcupdate.h:784 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) 
[ 933.027534][ T2927] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 933.027761][ T2927] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  933.028041][ T2927] RIP: 0033:0x7fb4a89f07b7
[ 933.028276][ T2927] 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)
[  933.029039][ T2927] RSP: 002b:00007ffe1ca47208 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  933.029367][ T2927] RAX: ffffffffffffffda RBX: 00007ffe1ca47d50 RCX: 00007fb4a89f07b7
[  933.029701][ T2927] RDX: 0000000000000000 RSI: 00007ffe1ca47270 RDI: 0000000000000005
[  933.030031][ T2927] RBP: 00007ffe1ca47730 R08: 0000000000000004 R09: 0000000000000000
[  933.030342][ T2927] R10: 00007fb4a88a9708 R11: 0000000000000246 R12: 00007ffe1ca489e5


Finger prints:
nh_valid_get_del_req:rtm_del_nexthop:rtnetlink_rcv_msg:netlink_rcv_skb