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: 1 PID: 16315 Comm: syz-executor.4 Not tainted 6.7.0-rc5-syzkaller-gd5b235ec8eab #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ccid_hc_tx_send_packet net/dccp/ccid.h:166 [inline]
pc : dccp_write_xmit+0x6c/0x208 net/dccp/output.c:356
lr : dccp_write_xmit+0x30/0x208 net/dccp/output.c:355
sp : ffff800099cf74c0
x29: ffff800099cf74c0 x28: ffff70001339eeac x27: 00000000000f0000
x26: 1fffe000277db266 x25: dfff800000000000 x24: 0000000000000000
x23: 0000000000000000 x22: ffff000127869a00 x21: ffff8000911718d0
x20: ffff00013bed9330 x19: ffff00013bed8a40 x18: ffff800099cf7120
x17: 000000000004841f x16: ffff80008051ebec x15: 0000000000000001
x14: 1fffe000277db19c x13: 0000000000000000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000ff0100 x9 : 1fffe000277db199
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffff800091e18480 x4 : 0000000000000008 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000000 x0 : ffff000127869a00
Call trace:
 ccid_hc_tx_send_packet net/dccp/ccid.h:166 [inline]
 dccp_write_xmit+0x6c/0x208 net/dccp/output.c:356
 dccp_sendmsg+0x610/0xae8 net/dccp/proto.c:801
 inet_sendmsg+0x15c/0x290 net/ipv4/af_inet.c:847
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x56c/0x840 net/socket.c:2584
 ___sys_sendmsg net/socket.c:2638 [inline]
 __sys_sendmmsg+0x318/0x7d8 net/socket.c:2724
 __do_sys_sendmmsg net/socket.c:2753 [inline]
 __se_sys_sendmmsg net/socket.c:2750 [inline]
 __arm64_sys_sendmmsg+0xa0/0xbc net/socket.c:2750
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
Code: aa1403e0 97886b47 f9400297 d343fee8 (38796908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1403e0 	mov	x0, x20
   4:	97886b47 	bl	0xfffffffffe21ad20
   8:	f9400297 	ldr	x23, [x20]
   c:	d343fee8 	lsr	x8, x23, #3
* 10:	38796908 	ldrb	w8, [x8, x25] <-- trapping instruction