Unable to handle kernel read from unreadable memory at virtual address ffff8000211fb000
KASAN: probably user-memory-access in range [0x0000000108fd8000-0x0000000108fd8007]
Mem abort info:
  ESR = 0x000000009600000f
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x0f: level 3 permission fault
Data abort info:
  ISV = 0, ISS = 0x0000000f
  CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020dd64000
[ffff8000211fb000] pgd=100000023ffff003, p4d=100000023ffff003, pud=100000023fffe003, pmd=100000010a56e003, pte=0160010000000fd3
Internal error: Oops: 000000009600000f [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4467 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __raw_readq arch/arm64/include/asm/io.h:86 [inline]
pc : __memcpy_fromio+0x2c8/0x454 arch/arm64/kernel/io.c:25
lr : __memcpy_fromio+0x2b0/0x454 arch/arm64/kernel/io.c:24
sp : ffff8000216376f0
x29: ffff8000216376f0 x28: dfff800000000000 x27: 0160010000000fd3
x26: 0160010000000fd3 x25: ffff8000211fb000 x24: 0000000000001000
x23: dfff800000000000 x22: ffff0000daa5cd60 x21: 0000000000000298
x20: ffff8000211fb000 x19: ffff0000daa5cd68 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000082f287c x15: 000000000004ffff
x14: ffff7000042c6ec4 x13: 1ffff000042c6ec4 x12: 0000000000000004
x11: ff00800008047604 x10: 0000000000000000 x9 : ffff0000d445b800
x8 : 1fffe0001b54b9ac x7 : ffff8000087ef3a0 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082f29a4
x2 : 00000000000002a0 x1 : 00000000000002a0 x0 : 0000000000000007
Call trace:
 __memcpy_fromio+0x2c8/0x454 arch/arm64/kernel/io.c:25
 generic_access_phys+0x2a4/0x2bc mm/memory.c:5684
 kernfs_vma_access+0x14c/0x1d4 fs/kernfs/file.c:444
 __access_remote_vm+0x2a4/0x5a8 mm/memory.c:5736
 access_remote_vm+0x48/0x60 mm/memory.c:5784
 environ_read+0x218/0x484 fs/proc/base.c:1020
 do_loop_readv_writev fs/read_write.c:-1 [inline]
 do_iter_read+0x39c/0x8b4 fs/read_write.c:798
 vfs_readv fs/read_write.c:916 [inline]
 do_preadv+0x1e0/0x32c fs/read_write.c:1008
 __do_sys_preadv fs/read_write.c:1058 [inline]
 __se_sys_preadv fs/read_write.c:1053 [inline]
 __arm64_sys_preadv+0xa4/0xbc fs/read_write.c:1053
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 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: aa1303f6 91002273 aa0803f5 d343fec8 (f9400298) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1303f6 	mov	x22, x19
   4:	91002273 	add	x19, x19, #0x8
   8:	aa0803f5 	mov	x21, x8
   c:	d343fec8 	lsr	x8, x22, #3
* 10:	f9400298 	ldr	x24, [x20] <-- trapping instruction