Unable to handle kernel paging request at virtual address dfff800000000000
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 11247 Comm: syz-executor.3 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dev_map_generic_redirect+0x9c/0x87c kernel/bpf/devmap.c:680
lr : dev_map_generic_redirect+0x94/0x87c kernel/bpf/devmap.c:677
sp : ffff8000984374c0
x29: ffff8000984375e0 x28: ffff0000d3df43c0 x27: dfff800000000000
x26: ffff800096d2e000 x25: ffff700013086ea4 x24: 000000000000005d
x23: 000000007fffffff x22: 0000000000000019 x21: ffff800098437520
x20: ffff80008eca1008 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000008000 x16: ffff800080719828 x15: 0000000000000001
x14: 0000000000000002 x13: 0000000000000019 x12: ffff0000d8295a00
x11: 0000000000040000 x10: 000000000000333a x9 : ffff80009bcf9000
x8 : 0000000000000000 x7 : 0000000000000004 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800096d2e000
x2 : ffff800096d2e000 x1 : ffff0000d3df43c0 x0 : 0000000000000000
Call trace:
 dev_map_generic_redirect+0x9c/0x87c kernel/bpf/devmap.c:680
 xdp_do_generic_redirect_map net/core/filter.c:4463 [inline]
 xdp_do_generic_redirect+0x400/0xd88 net/core/filter.c:4520
 do_xdp_generic+0x3b8/0x8c8 net/core/dev.c:5018
 tun_get_user+0x1e38/0x37bc drivers/net/tun.c:1931
 tun_chr_write_iter+0xfc/0x204 drivers/net/tun.c:2055
 call_write_iter include/linux/fs.h:2087 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x968/0xc3c fs/read_write.c:590
 ksys_write+0x15c/0x26c fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:652
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: 39004f2a 97f83f58 d343fe68 f90027e8 (387b6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	39004f2a 	strb	w10, [x25, #19]
   4:	97f83f58 	bl	0xffffffffffe0fd64
   8:	d343fe68 	lsr	x8, x19, #3
   c:	f90027e8 	str	x8, [sp, #72]
* 10:	387b6908 	ldrb	w8, [x8, x27] <-- trapping instruction