BUG: unable to handle page fault for address: fffff52004875200 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffed067 P4D 23ffed067 PUD 13ff62067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 18824 Comm: syz.9.3182 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline] RIP: 0010:sys_imageblit+0x1885/0x25d0 drivers/video/fbdev/core/sysimgblt.c:323 Code: 89 74 24 10 0f 85 e8 02 00 00 0f b6 46 ff c1 e8 07 21 d0 8b 9c 84 c0 00 00 00 4c 8b 7c 24 30 4b 8d 3c 37 48 89 f8 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 f8 02 00 00 43 89 1c 37 0f b6 46 ff c1 e8 RSP: 0018:ffffc900032e71a0 EFLAGS: 00010a06 RAX: 1ffff92004875200 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000001 RSI: ffff888143b911e4 RDI: ffffc900243a9000 RBP: ffffc900032e7308 R08: ffff88801db71e00 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000013 R13: 1ffff1102877223c R14: 0000000000000000 R15: ffffc900243a9000 FS: 00007fe52460c6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff52004875200 CR3: 00000000844c3000 CR4: 00000000003506f0 DR0: 0000000000010000 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:864 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+0x358/0x510 drivers/video/fbdev/core/fbcon.c:1299 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:1344 fbcon_do_set_font+0xb5c/0x1ae0 drivers/video/fbdev/core/fbcon.c:2437 con_font_set drivers/tty/vt/vt.c:4681 [inline] con_font_op+0xac1/0xdb0 drivers/tty/vt/vt.c:4727 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:476 [inline] vt_ioctl+0x161e/0x1ca0 drivers/tty/vt/vt_ioctl.c:754 tty_ioctl+0x7e6/0xba0 drivers/tty/tty_io.c:2793 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fe52379f559 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:00007fe52460c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe523a26090 RCX: 00007fe52379f559 RDX: 0000200000000880 RSI: 0000000000004b72 RDI: 0000000000000006 RBP: 00007fe523836b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe523a26128 R14: 00007fe523a26090 R15: 00007ffc7d7633a8 Modules linked in: CR2: fffff52004875200 ---[ end trace 0000000000000000 ]--- RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline] RIP: 0010:sys_imageblit+0x1885/0x25d0 drivers/video/fbdev/core/sysimgblt.c:323 Code: 89 74 24 10 0f 85 e8 02 00 00 0f b6 46 ff c1 e8 07 21 d0 8b 9c 84 c0 00 00 00 4c 8b 7c 24 30 4b 8d 3c 37 48 89 f8 48 c1 e8 03 <0f> b6 04 08 84 c0 0f 85 f8 02 00 00 43 89 1c 37 0f b6 46 ff c1 e8 RSP: 0018:ffffc900032e71a0 EFLAGS: 00010a06 RAX: 1ffff92004875200 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000001 RSI: ffff888143b911e4 RDI: ffffc900243a9000 RBP: ffffc900032e7308 R08: ffff88801db71e00 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000013 R13: 1ffff1102877223c R14: 0000000000000000 R15: ffffc900243a9000 FS: 00007fe52460c6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff52004875200 CR3: 00000000844c3000 CR4: 00000000003506f0 DR0: 0000000000010000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 74 24 10 mov %esi,0x10(%rsp) 4: 0f 85 e8 02 00 00 jne 0x2f2 a: 0f b6 46 ff movzbl -0x1(%rsi),%eax e: c1 e8 07 shr $0x7,%eax 11: 21 d0 and %edx,%eax 13: 8b 9c 84 c0 00 00 00 mov 0xc0(%rsp,%rax,4),%ebx 1a: 4c 8b 7c 24 30 mov 0x30(%rsp),%r15 1f: 4b 8d 3c 37 lea (%r15,%r14,1),%rdi 23: 48 89 f8 mov %rdi,%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 f8 02 00 00 jne 0x32e 36: 43 89 1c 37 mov %ebx,(%r15,%r14,1) 3a: 0f b6 46 ff movzbl -0x1(%rsi),%eax 3e: c1 .byte 0xc1 3f: e8 .byte 0xe8