general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 0 PID: 18420 Comm: kworker/u4:3 Not tainted 5.6.0-rc2-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+0x2d2/0xef0 net/batman-adv/bat_iv_ogm.c:814
Code: 03 80 3c 11 00 0f 85 66 0b 00 00 48 8b 8b 88 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 79 16 49 89 ce 48 89 f9 48 c1 e9 03 <0f> b6 0c 11 48 89 fa 83 e2 07 83 c2 01 38 ca 7c 08 84 c9 0f 85 90
RSP: 0018:ffffc900035f7c00 EFLAGS: 00010203
RAX: 0000000000000000 RBX: ffff888086da9000 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff888086da9088 RDI: 0000000000000016
RBP: ffffc900035f7cf0 R08: fffffbfff1333f79 R09: fffffbfff1333f79
R10: fffffbfff1333f78 R11: ffffffff8999fbc7 R12: ffff8880a28bac00
R13: ffff888086da9000 R14: 0000000000000000 R15: ffff88808777c000
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ccab0 CR3: 00000000a8068000 CR4: 00000000001406f0
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:865 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x582/0x810 net/batman-adv/bat_iv_ogm.c:1718
 process_one_work+0x903/0x15c0 kernel/workqueue.c:2264
 worker_thread+0x82/0xb50 kernel/workqueue.c:2410
 kthread+0x31d/0x3e0 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace f598012a8265a09d ]---
RIP: 0010:batadv_iv_ogm_schedule_buff+0x2d2/0xef0 net/batman-adv/bat_iv_ogm.c:814
Code: 03 80 3c 11 00 0f 85 66 0b 00 00 48 8b 8b 88 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 8d 79 16 49 89 ce 48 89 f9 48 c1 e9 03 <0f> b6 0c 11 48 89 fa 83 e2 07 83 c2 01 38 ca 7c 08 84 c9 0f 85 90
RSP: 0018:ffffc900035f7c00 EFLAGS: 00010203
RAX: 0000000000000000 RBX: ffff888086da9000 RCX: 0000000000000002
RDX: dffffc0000000000 RSI: ffff888086da9088 RDI: 0000000000000016
RBP: ffffc900035f7cf0 R08: fffffbfff1333f79 R09: fffffbfff1333f79
R10: fffffbfff1333f78 R11: ffffffff8999fbc7 R12: ffff8880a28bac00
R13: ffff888086da9000 R14: 0000000000000000 R15: ffff88808777c000
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ccab0 CR3: 0000000008a6d000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400