Unable to handle kernel paging request at virtual address ffff700004ad5218
KASAN: maybe wild-memory-access in range [0xffff8000256a90c0-0xffff8000256a90c7]
Mem abort info:
  ESR = 0x0000000096000007
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x07: level 3 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000007
  CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000020bb8e000
[ffff700004ad5218] pgd=000000023ea51003, p4d=000000023ea51003, pud=000000023ea50003, pmd=100000010bd56003, pte=0000000000000000
Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 5179 Comm: syz.5.126 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline]
pc : sys_imageblit+0x1328/0x1d10 drivers/video/fbdev/core/sysimgblt.c:323
lr : fast_imageblit drivers/video/fbdev/core/sysimgblt.c:240 [inline]
lr : sys_imageblit+0xed4/0x1d10 drivers/video/fbdev/core/sysimgblt.c:323
sp : ffff800021fe7220
x29: ffff800021fe7360 x28: 0000000000000001 x27: ffff8000256a90c0
x26: ffff0000cea79801 x25: 1fffe00019d4f300 x24: ffff8000256a90c0
x23: ffff8000256a90c0 x22: 0000000000000000 x21: ffff800021fe72e0
x20: 0000000000000001 x19: ffff0000cea79800 x18: 1fffe00033c2597e
x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000002
x14: 0000000000000004 x13: 0000000000ff0100 x12: ffff80001715a5b8
x11: dfff800000000000 x10: 0000000000000000 x9 : 1ffff00004ad5218
x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000031000000030
x5 : ffff0000cec2f550 x4 : 0000000000000000 x3 : ffff80000aeba35c
x2 : ffffffffffffffc0 x1 : ffff80001715a590 x0 : 0000000000000001
Call trace:
 fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline]
 sys_imageblit+0x1328/0x1d10 drivers/video/fbdev/core/sysimgblt.c:323
 drm_fb_helper_sys_imageblit+0x40/0x464 drivers/gpu/drm/drm_fb_helper.c:864
 drm_fbdev_fb_imageblit+0x170/0x1dc drivers/gpu/drm/drm_fb_helper.c:2402
 soft_cursor+0x53c/0x6c4 drivers/video/fbdev/core/softcursor.c:74
 bit_cursor+0x110c/0x18d0 drivers/video/fbdev/core/bitblit.c:409
 fbcon_cursor+0x3c4/0x5a8 drivers/video/fbdev/core/fbcon.c:1342
 set_cursor drivers/tty/vt/vt.c:920 [inline]
 con_flush_chars+0x204/0x280 drivers/tty/vt/vt.c:3371
 con_write+0x40/0x58 drivers/tty/vt/vt.c:3299
 process_output_block drivers/tty/n_tty.c:586 [inline]
 n_tty_write+0xb5c/0xfb0 drivers/tty/n_tty.c:2377
 do_tty_write drivers/tty/tty_io.c:1020 [inline]
 file_tty_write+0x3c0/0x72c drivers/tty/tty_io.c:1091
 tty_write+0x44/0x54 drivers/tty/tty_io.c:1112
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x520/0x93c fs/read_write.c:861
 vfs_writev fs/read_write.c:934 [inline]
 do_writev+0x200/0x3d0 fs/read_write.c:977
 __do_sys_writev fs/read_write.c:1050 [inline]
 __se_sys_writev fs/read_write.c:1047 [inline]
 __arm64_sys_writev+0x80/0x94 fs/read_write.c:1047
 __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+0x58/0x12c 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:589
Code: aa1703fb d343ff09 f90043f3 0a481f8a (38eb6928) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1703fb 	mov	x27, x23
   4:	d343ff09 	lsr	x9, x24, #3
   8:	f90043f3 	str	x19, [sp, #128]
   c:	0a481f8a 	and	w10, w28, w8, lsr #7
* 10:	38eb6928 	ldrsb	w8, [x9, x11] <-- trapping instruction