BUG: unable to handle page fault for address: fffff52004934200 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffee067 P4D 23ffee067 PUD 179d0067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9567 Comm: syz.8.1250 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:276 [inline] RIP: 0010:sys_imageblit+0x2016/0x25d0 drivers/video/fbdev/core/sysimgblt.c:323 Code: b0 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 b7 00 00 00 45 8b 36 48 8b 44 24 18 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 d1 00 00 00 48 8b 44 24 20 46 89 34 a8 44 RSP: 0018:ffffc9000401f180 EFLAGS: 00010a06 RAX: 1ffff92004934200 RBX: ffff8880211ec621 RCX: dffffc0000000000 RDX: ffffc90011e13000 RSI: 00000000000169b1 RDI: 00000000000169b2 RBP: ffffc9000401f2e8 R08: ffff888023493b80 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000008 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000007 FS: 00007ff21723f6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff52004934200 CR3: 000000002449d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_fb_helper_sys_imageblit+0x2e/0x510 drivers/gpu/drm/drm_fb_helper.c:793 ccw_putcs_aligned drivers/video/fbdev/core/fbcon_ccw.c:125 [inline] ccw_putcs+0xf26/0x11e0 drivers/video/fbdev/core/fbcon_ccw.c:175 fbcon_putcs+0x2c8/0x450 drivers/video/fbdev/core/fbcon.c:1265 do_update_region+0x4e5/0x640 drivers/tty/vt/vt.c:676 redraw_screen+0xa2c/0x1000 drivers/tty/vt/vt.c:1035 vc_do_resize+0x122c/0x17b0 drivers/tty/vt/vt.c:1342 fbcon_do_set_font+0xc6e/0x1cd0 drivers/video/fbdev/core/fbcon.c:2411 con_font_set drivers/tty/vt/vt.c:4669 [inline] con_font_op+0xace/0xdc0 drivers/tty/vt/vt.c:4715 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:476 [inline] vt_ioctl+0x1618/0x1ca0 drivers/tty/vt/vt_ioctl.c:754 tty_ioctl+0x848/0xc30 drivers/tty/tty_io.c:2810 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ff218fe7199 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff21723f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ff21926efa0 RCX: 00007ff218fe7199 RDX: 0000200000000040 RSI: 0000000000004b72 RDI: 0000000000000004 RBP: 00007ff21907e888 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff21926f038 R14: 00007ff21926efa0 R15: 00007fff91379568 Modules linked in: CR2: fffff52004934200 ---[ end trace 36ea0797ee7ba6cb ]--- RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:276 [inline] RIP: 0010:sys_imageblit+0x2016/0x25d0 drivers/video/fbdev/core/sysimgblt.c:323 Code: b0 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 b7 00 00 00 45 8b 36 48 8b 44 24 18 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 d1 00 00 00 48 8b 44 24 20 46 89 34 a8 44 RSP: 0018:ffffc9000401f180 EFLAGS: 00010a06 RAX: 1ffff92004934200 RBX: ffff8880211ec621 RCX: dffffc0000000000 RDX: ffffc90011e13000 RSI: 00000000000169b1 RDI: 00000000000169b2 RBP: ffffc9000401f2e8 R08: ffff888023493b80 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000008 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000007 FS: 00007ff21723f6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff52004934200 CR3: 000000002449d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b0 4c mov $0x4c,%al 2: 89 f0 mov %esi,%eax 4: 48 c1 e8 03 shr $0x3,%rax 8: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx f: fc ff df 12: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax 16: 84 c0 test %al,%al 18: 0f 85 b7 00 00 00 jne 0xd5 1e: 45 8b 36 mov (%r14),%r14d 21: 48 8b 44 24 18 mov 0x18(%rsp),%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 d1 00 00 00 jne 0x107 36: 48 8b 44 24 20 mov 0x20(%rsp),%rax 3b: 46 89 34 a8 mov %r14d,(%rax,%r13,4) 3f: 44 rex.R