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
[dfff800000000000] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 13456 Comm: syz.1.3622 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/02/2026
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : strcmp+0x28/0xf0 lib/string.c:265
lr : remove_cache_mod kernel/trace/trace_events.c:948 [inline]
lr : cache_mod kernel/trace/trace_events.c:977 [inline]
lr : __ftrace_set_clr_event_nolock+0x6a0/0x940 kernel/trace/trace_events.c:1395
sp : ffff800094f07840
x29: ffff800094f07870 x28: dfff800000000000 x27: 0000000000000000
x26: ffff800088d7e870 x25: ffff0000d3e58580 x24: 00000000ffffffea
x23: ffff800088d7e870 x22: 0000000000000000 x21: dfff800000000000
x20: ffff0000d3e58598 x19: ffff0000f01b7560 x18: 0000000000000000
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000001
x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000000 x10: dfff800000000000 x9 : ffff0000f2e90101
x8 : 0000000000000000 x7 : ffff800080539004 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000806c6944
x2 : 0000000000000000 x1 : ffff0000f2e90101 x0 : 0000000000000000
Call trace:
 strcmp+0x28/0xf0 lib/string.c:265 (P)
 remove_cache_mod kernel/trace/trace_events.c:948 [inline]
 cache_mod kernel/trace/trace_events.c:977 [inline]
 __ftrace_set_clr_event_nolock+0x6a0/0x940 kernel/trace/trace_events.c:1395
 __ftrace_set_clr_event+0xa8/0xec kernel/trace/trace_events.c:1410
 ftrace_set_clr_event+0x2a0/0x438 kernel/trace/trace_events.c:1460
 ftrace_event_write+0x1dc/0x28c kernel/trace/trace_events.c:1548
 vfs_write+0x2a4/0xa0c fs/read_write.c:685
 ksys_write+0x12c/0x228 fs/read_write.c:739
 __do_sys_write fs/read_write.c:750 [inline]
 __se_sys_write fs/read_write.c:747 [inline]
 __arm64_sys_write+0x84/0x98 fs/read_write.c:747
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
Code: aa0103e9 f2fbffea d343fc0b 1200080c (38ea696b) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa0103e9 	mov	x9, x1
   4:	f2fbffea 	movk	x10, #0xdfff, lsl #48
   8:	d343fc0b 	lsr	x11, x0, #3
   c:	1200080c 	and	w12, w0, #0x7
* 10:	38ea696b 	ldrsb	w11, [x11, x10] <-- trapping instruction