syzbot

System zones: 0-5
EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback.
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=000000010eb83000
[0000000000000000] pgd=08000001125b1003, p4d=08000001125b1003, pud=080000012114c003, pmd=0000000000000000
Internal error: Oops: 0000000086000006 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6771 Comm: syz.2.590 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 82400805 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=-c)
pc : 0x0
lr : bond_xdp_xmit+0x280/0x46c drivers/net/bonding/bond_main.c:5600
sp : ffff800021297240
x29: ffff8000212972e0 x28: 000000000000000f x27: dfff800000000000
x26: ffff700004252e50 x25: ffff800012c31db8 x24: ffff0000d9314000
x23: fffffbffeff3cae0 x22: ffff0000d42f4000 x21: fffffbffeff3cae0
x20: 0000000000000001 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082d7ca0 x15: 0000000000000002
x14: 0000000000000001 x13: 0000000000ff0100 x12: 0000000000080000
x11: 00000000000028df x10: ffff8000271c9000 x9 : ffff800021297280
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000008 x3 : 0000000000000001
x2 : ffff8000212972a0 x1 : 0000000000000001 x0 : ffff0000d9314000
Call trace:
 0x0
 bq_xmit_all+0xaf8/0xf80 kernel/bpf/devmap.c:392
 __dev_flush+0xc4/0x18c kernel/bpf/devmap.c:422
 xdp_do_flush+0x14/0x28 net/core/filter.c:4228
 xdp_test_run_batch net/bpf/test_run.c:332 [inline]
 bpf_test_run_xdp_live+0x1150/0x15d0 net/bpf/test_run.c:362
 bpf_prog_test_run_xdp+0x5fc/0xc88 net/bpf/test_run.c:1412
 bpf_prog_test_run+0x2dc/0x360 kernel/bpf/syscall.c:3695
 __sys_bpf+0x504/0x660 kernel/bpf/syscall.c:5048
 __do_sys_bpf kernel/bpf/syscall.c:5134 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5132 [inline]
 __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:5132
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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 ]---