Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
Mem abort info:
  ESR = 0x0000000086000006
  EC = 0x21: IABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x06: level 2 translation fault
user pgtable: 4k pages, 48-bit VAs, pgdp=000000010d2b9000
[0000000000000000] pgd=080000010cf66003, p4d=080000010cf66003, pud=0800000133006003, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 5543 Comm: syz.3.249 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 82400805 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=-c)
pc : 0x0
lr : bond_xdp_xmit+0x284/0x480 drivers/net/bonding/bond_main.c:5676
sp : ffff8000212c7420
x29: ffff8000212c74e0 x28: ffff8000212c7448 x27: dfff800000000000
x26: ffff700004258e90 x25: ffff800013d28558 x24: ffff0000f1354000
x23: fffffbffeffba2d0 x22: ffff0000df538000 x21: fffffbffeffba2d0
x20: 0000000000000001 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082dbd78 x15: 0000000000000002
x14: 0000000000000001 x13: 0000000000ff0100 x12: 0000000000080000
x11: 000000000000035e x10: ffff800025f1b000 x9 : ffff8000212c7480
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000008 x3 : 0000000000000001
x2 : ffff8000212c74a0 x1 : 0000000000000001 x0 : ffff0000f1354000
Call trace:
 0x0
 bq_xmit_all+0xb0c/0xf8c kernel/bpf/devmap.c:392
 __dev_flush+0xc4/0x18c kernel/bpf/devmap.c:422
 xdp_do_flush+0x14/0x28 net/core/filter.c:4278
 tun_build_skb drivers/net/tun.c:1728 [inline]
 tun_get_user+0x2440/0x3268 drivers/net/tun.c:1823
 tun_chr_write_iter+0xfc/0x200 drivers/net/tun.c:2055
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: bad PC value
---[ end trace 0000000000000000 ]---