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: 26 Comm: kworker/u4:2 Not tainted 5.9.0-rc1-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:ffffc90000007b08 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888214f56000 RCX: ffffffff871b07a3
RDX: 000000000000006a RSI: ffffffff871b0912 RDI: 0000000000000350
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888092ada8e3
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888214f56000
R13: 0000000000000078 R14: ffff888095348700 R15: 0000000000000010
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d6db1bdb8 CR3: 0000000092630000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 rose_transmit_clear_request+0x1d5/0x290 net/rose/rose_link.c:255
 rose_rx_call_request+0x4bd/0x1978 net/rose/af_rose.c:998
 rose_loopback_timer+0x15d/0x470 net/rose/rose_loopback.c:100
 call_timer_fn+0x1ac/0x760 kernel/time/timer.c:1413
 expire_timers kernel/time/timer.c:1458 [inline]
 __run_timers.part.0+0x67c/0xaa0 kernel/time/timer.c:1755
 __run_timers kernel/time/timer.c:1736 [inline]
 run_timer_softirq+0xae/0x1a0 kernel/time/timer.c:1768
 __do_softirq+0x2de/0xa24 kernel/softirq.c:298
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:393 [inline]
 __irq_exit_rcu kernel/softirq.c:423 [inline]
 irq_exit_rcu+0x1f3/0x230 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:102 [inline]
RIP: 0010:__local_bh_enable_ip+0x101/0x190 kernel/softirq.c:202
Code: 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 8b 00 00 00 48 83 3d b0 5c 6f 08 00 74 2f fb 66 0f 1f 44 00 00 <65> 8b 05 48 1f bb 7e 85 c0 74 46 5b 5d c3 0f 0b e9 4a ff ff ff 48
RSP: 0018:ffffc90000e27bf8 EFLAGS: 00000286
RAX: 1ffffffff136c77b RBX: 0000000000000201 RCX: 0000000000000006
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff8146df01
RBP: ffffffff87d7ab65 R08: 0000000000000001 R09: ffffffff8c5f3aa7
R10: fffffbfff18be754 R11: 1ffff110150ad900 R12: ffff88805d309730
R13: ffff88805d308c00 R14: dffffc0000000000 R15: ffffffff87d7af00
 spin_unlock_bh include/linux/spinlock.h:399 [inline]
 batadv_nc_purge_paths+0x2a5/0x3a0 net/batman-adv/network-coding.c:470
 batadv_nc_worker+0x868/0xe50 net/batman-adv/network-coding.c:721
 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 c1abafd0f1cba7a2 ]---
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:ffffc90000007b08 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff888214f56000 RCX: ffffffff871b07a3
RDX: 000000000000006a RSI: ffffffff871b0912 RDI: 0000000000000350
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888092ada8e3
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888214f56000
R13: 0000000000000078 R14: ffff888095348700 R15: 0000000000000010
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5d6db1bdb8 CR3: 0000000092630000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400