general protection fault, probably for non-canonical address 0xdffffc000000006a: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000350-0x0000000000000357]
CPU: 0 PID: 3071 Comm: kworker/u4:2 Not tainted 5.7.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101
Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 8d bd 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 50 03 00 00 e9 77 fe ff ff
RSP: 0018:ffffc90000007b40 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88821524ac00 RCX: ffffffff86faf9a3
RDX: 000000000000006a RSI: ffffffff86fafb12 RDI: 0000000000000350
RBP: 0000000000000000 R08: ffff8880629a8440 R09: ffffed101207e31d
R10: ffff8880903f18e3 R11: ffffed101207e31c R12: ffff88821524ac00
R13: 0000000000000078 R14: ffff8880609a3c00 R15: 0000000000000010
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc9e059bdb8 CR3: 00000000a5d97000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rose_transmit_clear_request+0x1de/0x290 net/rose/rose_link.c:255
 rose_rx_call_request+0x488/0x1960 net/rose/af_rose.c:976
 rose_loopback_timer+0x15d/0x470 net/rose/rose_loopback.c:100
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1786
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.0+0x10f/0x160 kernel/softirq.c:337
 do_softirq kernel/softirq.c:329 [inline]
 __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189
 spin_unlock_bh include/linux/spinlock.h:398 [inline]
 batadv_nc_purge_paths+0x264/0x380 net/batman-adv/network-coding.c:470
 batadv_nc_worker+0x294/0x760 net/batman-adv/network-coding.c:719
 process_one_work+0x965/0x16a0 kernel/workqueue.c:2268
 worker_thread+0x96/0xe20 kernel/workqueue.c:2414
 kthread+0x388/0x470 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 168facade33f6fc1 ]---
RIP: 0010:rose_send_frame+0x1dd/0x2f0 net/rose/rose_link.c:101
Code: 48 c1 ea 03 80 3c 02 00 0f 85 06 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 20 48 8d bd 50 03 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ea 00 00 00 4c 8b bd 50 03 00 00 e9 77 fe ff ff
RSP: 0018:ffffc90000007b40 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88821524ac00 RCX: ffffffff86faf9a3
RDX: 000000000000006a RSI: ffffffff86fafb12 RDI: 0000000000000350
RBP: 0000000000000000 R08: ffff8880629a8440 R09: ffffed101207e31d
R10: ffff8880903f18e3 R11: ffffed101207e31c R12: ffff88821524ac00
R13: 0000000000000078 R14: ffff8880609a3c00 R15: 0000000000000010
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc9e059bdb8 CR3: 00000000a5d97000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400