Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 UID: 0 PID: 6885 Comm: kworker/0:5 Not tainted 6.13.0-rc7-syzkaller-00149-g9bffa1ad25b8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: mld mld_ifc_work
RIP: 0010:geneve_get_sk_family drivers/net/geneve.c:128 [inline]
RIP: 0010:geneve_lookup_skb drivers/net/geneve.c:180 [inline]
RIP: 0010:geneve_udp_encap_recv+0x292/0x2ef0 drivers/net/geneve.c:382
Code: 8b 1e 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 6c 6d 7b fb 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a5 1f 00 00 0f b7 1b 48 89 df 48 c7 c6
RSP: 0018:ffffc90000007340 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88805b179e00
RDX: 0000000000000100 RSI: ffff888072f74000 RDI: 0000000000000000
RBP: ffffc90000007498 R08: ffffffff8687e336 R09: 000000000000e7dc
R10: 0000000000000002 R11: ffffffff8687e100 R12: 1ffff92000000e7c
R13: dffffc0000000000 R14: ffff888072f74018 R15: ffff888029c95280
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff5ec969160 CR3: 000000007e3d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 udp_queue_rcv_one_skb+0x1616/0x1820 net/ipv4/udp.c:2324
 udp_unicast_rcv_skb+0x253/0x3d0 net/ipv4/udp.c:2562
 __udp4_lib_rcv+0x135d/0x2710 net/ipv4/udp.c:2638
 ip_protocol_deliver_rcu+0x290/0x440 net/ipv4/ip_input.c:205
 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314
 __netif_receive_skb_one_core net/core/dev.c:5704 [inline]
 __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5817
 process_backlog+0x662/0x15b0 net/core/dev.c:6149
 __napi_poll+0xcb/0x490 net/core/dev.c:6902
 napi_poll net/core/dev.c:6971 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:7093
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 do_softirq+0x11b/0x1e0 kernel/softirq.c:462
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:919 [inline]
 __dev_queue_xmit+0x1775/0x3f50 net/core/dev.c:4493
 dev_queue_xmit include/linux/netdevice.h:3168 [inline]
 neigh_hh_output include/net/neighbour.h:523 [inline]
 neigh_output include/net/neighbour.h:537 [inline]
 ip6_finish_output2+0x1284/0x17b0 net/ipv6/ip6_output.c:141
 ip6_finish_output+0x41e/0x840 net/ipv6/ip6_output.c:226
 NF_HOOK+0x9e/0x430 include/linux/netfilter.h:314
 mld_sendpack+0x843/0xdb0 net/ipv6/mcast.c:1819
 mld_send_cr net/ipv6/mcast.c:2120 [inline]
 mld_ifc_work+0x7d9/0xd90 net/ipv6/mcast.c:2651
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:geneve_get_sk_family drivers/net/geneve.c:128 [inline]
RIP: 0010:geneve_lookup_skb drivers/net/geneve.c:180 [inline]
RIP: 0010:geneve_udp_encap_recv+0x292/0x2ef0 drivers/net/geneve.c:382
Code: 8b 1e 48 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 6c 6d 7b fb 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 a5 1f 00 00 0f b7 1b 48 89 df 48 c7 c6
RSP: 0018:ffffc90000007340 EFLAGS: 00010202

RAX: 0000000000000002 RBX: 0000000000000010 RCX: ffff88805b179e00
RDX: 0000000000000100 RSI: ffff888072f74000 RDI: 0000000000000000
RBP: ffffc90000007498 R08: ffffffff8687e336 R09: 000000000000e7dc
R10: 0000000000000002 R11: ffffffff8687e100 R12: 1ffff92000000e7c
R13: dffffc0000000000 R14: ffff888072f74018 R15: ffff888029c95280
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff5ec969160 CR3: 000000007e3d0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8b 1e                	mov    (%rsi),%ebx
   2:	48 83 c3 18          	add    $0x18,%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 6c 6d 7b fb       	call   0xfb7b6d88
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 10          	add    $0x10,%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 a5 1f 00 00    	jne    0x1fdc
  37:	0f b7 1b             	movzwl (%rbx),%ebx
  3a:	48 89 df             	mov    %rbx,%rdi
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	c6                   	.byte 0xc6