general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 387 Comm: kworker/u4:5 Not tainted 5.6.0-rc1-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+0x3f4/0x1220 net/batman-adv/bat_iv_ogm.c:814
Code: 48 c1 ea 03 80 3c 02 00 0f 85 42 0d 00 00 49 8b af 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 16 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 fa
RSP: 0018:ffffc90001547bd0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101500cd19
RDX: 0000000000000002 RSI: ffffffff87949b59 RDI: 0000000000000016
RBP: 0000000000000000 R08: ffff8880a8066040 R09: fffffbfff14cb621
R10: fffffbfff14cb620 R11: ffffffff8a65b107 R12: 0000000000000000
R13: ffff8880914f2000 R14: ffff88808f84f000 R15: ffff8880914f2000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8793d8740 CR3: 00000000a8ec0000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:865 [inline]
 batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:858 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x5c8/0x7c0 net/batman-adv/bat_iv_ogm.c:1718
 process_one_work+0x94b/0x1690 kernel/workqueue.c:2264
 worker_thread+0x96/0xe20 kernel/workqueue.c:2410
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace dd28cc281ca30e65 ]---
RIP: 0010:batadv_iv_ogm_schedule_buff+0x3f4/0x1220 net/batman-adv/bat_iv_ogm.c:814
Code: 48 c1 ea 03 80 3c 02 00 0f 85 42 0d 00 00 49 8b af 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 16 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 fa
RSP: 0018:ffffc90001547bd0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffff1101500cd19
RDX: 0000000000000002 RSI: ffffffff87949b59 RDI: 0000000000000016
RBP: 0000000000000000 R08: ffff8880a8066040 R09: fffffbfff14cb621
R10: fffffbfff14cb620 R11: ffffffff8a65b107 R12: 0000000000000000
R13: ffff8880914f2000 R14: ffff88808f84f000 R15: ffff8880914f2000
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000e77fd0 CR3: 0000000095ed9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600