general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 2612 Comm: kworker/0:2 Not tainted 5.9.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: wg-kex-wg1 wg_packet_handshake_receive_worker
RIP: 0010:hlist_replace_rcu include/linux/rculist.h:505 [inline]
RIP: 0010:wg_index_hashtable_replace+0x176/0x330 drivers/net/wireguard/peerlookup.c:174
Code: 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 44 01 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 45 10 48 89 c6 48 c1 ee 03 <80> 3c 0e 00 0f 85 06 01 00 00 48 85 d2 4c 89 28 74 47 e8 b3 fe ac
RSP: 0018:ffffc900088b7bf8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88805c6aa4f8 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88809caac010
RBP: ffff88809caac000 R08: 0000000000000001 R09: ffff88805ed50000
R10: ffffed100bdaa000 R11: 0000000000000000 R12: ffff88805ed50000
R13: ffff88809caac008 R14: ffff88805c6aa508 R15: ffff88805c6aa500
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30520000 CR3: 00000000693be000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 wg_noise_handshake_begin_session+0x752/0xc9a drivers/net/wireguard/noise.c:820
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:183 [inline]
 wg_packet_handshake_receive_worker+0x33b/0x760 drivers/net/wireguard/receive.c:220
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace 9bf436fe2b216ec9 ]---
RIP: 0010:hlist_replace_rcu include/linux/rculist.h:505 [inline]
RIP: 0010:wg_index_hashtable_replace+0x176/0x330 drivers/net/wireguard/peerlookup.c:174
Code: 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 44 01 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b 45 10 48 89 c6 48 c1 ee 03 <80> 3c 0e 00 0f 85 06 01 00 00 48 85 d2 4c 89 28 74 47 e8 b3 fe ac
RSP: 0018:ffffc900088b7bf8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88805c6aa4f8 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88809caac010
RBP: ffff88809caac000 R08: 0000000000000001 R09: ffff88805ed50000
R10: ffffed100bdaa000 R11: 0000000000000000 R12: ffff88805ed50000
R13: ffff88809caac008 R14: ffff88805c6aa508 R15: ffff88805c6aa500
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30520000 CR3: 00000000693be000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400