general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077]
CPU: 1 PID: 12953 Comm: kworker/u4:0 Not tainted 5.8.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:batadv_iv_ogm_schedule_buff+0xd1e/0x1410 net/batman-adv/bat_iv_ogm.c:843
Code: 80 3c 28 00 0f 85 ee 05 00 00 4d 8b 3f 49 81 ff e0 e9 4e 8d 0f 84 dd 02 00 00 e8 bd 80 ae f9 49 8d 7f 70 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 af 06 00 00 48 8b 44 24 08 49 8b 6f 70 80 38
RSP: 0018:ffffc90018b17b98 EFLAGS: 00010202
RAX: 000000000000000e RBX: ffff88809ad73800 RCX: ffffffff87c5394d
RDX: ffff888043544440 RSI: ffffffff87c536a3 RDI: 0000000000000070
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880899a282b
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000007
R13: dffffc0000000000 R14: ffff888049464c40 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005166a0 CR3: 00000000a62bc000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline]
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x5c8/0x800 net/batman-adv/bat_iv_ogm.c:1722
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:291
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293
Modules linked in:
---[ end trace 7f377d92d63b7fbb ]---
RIP: 0010:batadv_iv_ogm_schedule_buff+0xd1e/0x1410 net/batman-adv/bat_iv_ogm.c:843
Code: 80 3c 28 00 0f 85 ee 05 00 00 4d 8b 3f 49 81 ff e0 e9 4e 8d 0f 84 dd 02 00 00 e8 bd 80 ae f9 49 8d 7f 70 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 af 06 00 00 48 8b 44 24 08 49 8b 6f 70 80 38
RSP: 0018:ffffc90018b17b98 EFLAGS: 00010202
RAX: 000000000000000e RBX: ffff88809ad73800 RCX: ffffffff87c5394d
RDX: ffff888043544440 RSI: ffffffff87c536a3 RDI: 0000000000000070
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880899a282b
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000007
R13: dffffc0000000000 R14: ffff888049464c40 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005166a0 CR3: 00000000a62bc000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400