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 UID: 0 PID: 7187 Comm: syz-executor Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dst_dev_put+0x2c/0x2bc net/core/dst.c:146
lr : dst_dev_put+0x28/0x2bc net/core/dst.c:145
sp : ffff800080007be0
x29: ffff800080007be0 x28: ffffffffffffffff x27: ffff80008f65f000
x26: 1ffff00011ecbe66 x25: dfff800000000000 x24: dfff800000000000
x23: 0000000000000000 x22: dfff800000000000 x21: ffff80008fd41180
x20: 00007dfe9bbf8cf8 x19: 0000000000000001 x18: ffff0001b374f828
x17: ffff800123ab0000 x16: ffff8000806a2174 x15: 0000000000000001
x14: 1fffe0001bbd00c0 x13: 0000000000000000 x12: 0000000000000000
x11: ffff60001bbd00c1 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000d90b0000 x7 : ffff8000834e2b78 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008a2cfaa0
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000001
Call trace:
 dst_dev_put+0x2c/0x2bc net/core/dst.c:146 (P)
 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:201 [inline]
 fib_nh_common_release+0x1f4/0x440 net/ipv4/fib_semantics.c:212
 fib6_nh_release+0x3a0/0x40c net/ipv6/route.c:3673
 fib6_info_destroy_rcu+0xc8/0x214 net/ipv6/ip6_fib.c:177
 rcu_do_batch kernel/rcu/tree.c:2546 [inline]
 rcu_core+0x898/0x1b5c kernel/rcu/tree.c:2802
 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2819
 handle_softirqs+0x320/0xd34 kernel/softirq.c:561
 __do_softirq+0x14/0x20 kernel/softirq.c:595
 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:81
 call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:891
 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:86
 do_softirq+0x90/0xf8 kernel/softirq.c:462
 __local_bh_enable_ip+0x288/0x44c kernel/softirq.c:389
 local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
 put_cpu_fpsimd_context arch/arm64/kernel/fpsimd.c:244 [inline]
 fpsimd_restore_current_state+0x64/0xec arch/arm64/kernel/fpsimd.c:1786
 do_notify_resume+0x114/0x1f4 arch/arm64/kernel/entry-common.c:154
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: aa0003f3 f2fbfff6 9795a501 d343fe77 (38766ae8) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa0003f3 	mov	x19, x0
   4:	f2fbfff6 	movk	x22, #0xdfff, lsl #48
   8:	9795a501 	bl	0xfffffffffe56940c
   c:	d343fe77 	lsr	x23, x19, #3
* 10:	38766ae8 	ldrb	w8, [x23, x22] <-- trapping instruction