BUG: unable to handle page fault for address: fffff520008e793d #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffed067 P4D 23ffed067 PUD 119bc067 PMD 1c094067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5718 Comm: syz-executor.0 Not tainted 6.0.0-rc2-syzkaller-00054-gc40e8341e3b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:276 [inline] RIP: 0010:sys_imageblit+0x133c/0x2240 drivers/video/fbdev/core/sysimgblt.c:323 Code: e8 03 42 0f b6 14 38 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 06 0b 00 00 48 89 e8 8b 9c 9c d8 00 00 00 48 c1 e8 03 <42> 0f b6 14 38 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc900033972a8 EFLAGS: 00010213 RAX: 1ffff920008e793d RBX: 0000000000000000 RCX: 0000000000000007 RDX: 0000000000000000 RSI: ffffffff8439b071 RDI: ffffc90003397380 RBP: ffffc9000473c9ec R08: 0000000000000005 R09: 000000000000001f R10: 0000000000000007 R11: 0000000000000001 R12: 0000000000000007 R13: 0000000000000004 R14: ffff88801d87d270 R15: dffffc0000000000 FS: 00007fd6ce507700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff520008e793d CR3: 0000000034f12000 CR4: 0000000000350ee0 Call Trace: drm_fb_helper_sys_imageblit drivers/gpu/drm/drm_fb_helper.c:837 [inline] drm_fbdev_fb_imageblit+0x15c/0x350 drivers/gpu/drm/drm_fb_helper.c:2340 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:139 [inline] bit_putcs+0x6e1/0xd20 drivers/video/fbdev/core/bitblit.c:188 fbcon_putcs+0x314/0x3e0 drivers/video/fbdev/core/fbcon.c:1287 do_update_region+0x399/0x630 drivers/tty/vt/vt.c:676 invert_screen+0x1d4/0x600 drivers/tty/vt/vt.c:800 highlight drivers/tty/vt/selection.c:57 [inline] clear_selection drivers/tty/vt/selection.c:85 [inline] clear_selection+0x55/0x70 drivers/tty/vt/selection.c:81 vc_do_resize+0xe61/0x1170 drivers/tty/vt/vt.c:1257 fbcon_do_set_font+0x43a/0x6f0 drivers/video/fbdev/core/fbcon.c:2428 fbcon_set_font+0x89d/0xab0 drivers/video/fbdev/core/fbcon.c:2519 con_font_set drivers/tty/vt/vt.c:4666 [inline] con_font_op+0x73a/0xc90 drivers/tty/vt/vt.c:4710 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] vt_ioctl+0x1efa/0x2b20 drivers/tty/vt/vt_ioctl.c:752 tty_ioctl+0xfab/0x15d0 drivers/tty/tty_io.c:2778 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd6cd489279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd6ce507168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd6cd59bf80 RCX: 00007fd6cd489279 RDX: 0000000020000440 RSI: 0000000000004b72 RDI: 0000000000000003 RBP: 00007fd6cd4e3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffee613c3bf R14: 00007fd6ce507300 R15: 0000000000022000 Modules linked in: CR2: fffff520008e793d ---[ end trace 0000000000000000 ]--- RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:276 [inline] RIP: 0010:sys_imageblit+0x133c/0x2240 drivers/video/fbdev/core/sysimgblt.c:323 Code: e8 03 42 0f b6 14 38 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 06 0b 00 00 48 89 e8 8b 9c 9c d8 00 00 00 48 c1 e8 03 <42> 0f b6 14 38 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc900033972a8 EFLAGS: 00010213 RAX: 1ffff920008e793d RBX: 0000000000000000 RCX: 0000000000000007 RDX: 0000000000000000 RSI: ffffffff8439b071 RDI: ffffc90003397380 RBP: ffffc9000473c9ec R08: 0000000000000005 R09: 000000000000001f R10: 0000000000000007 R11: 0000000000000001 R12: 0000000000000007 R13: 0000000000000004 R14: ffff88801d87d270 R15: dffffc0000000000 FS: 00007fd6ce507700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff520008e793d CR3: 0000000034f12000 CR4: 0000000000350ee0 ---------------- Code disassembly (best guess): 0: e8 03 42 0f b6 callq 0xb60f4208 5: 14 38 adc $0x38,%al 7: 48 89 f8 mov %rdi,%rax a: 83 e0 07 and $0x7,%eax d: 83 c0 03 add $0x3,%eax 10: 38 d0 cmp %dl,%al 12: 7c 08 jl 0x1c 14: 84 d2 test %dl,%dl 16: 0f 85 06 0b 00 00 jne 0xb22 1c: 48 89 e8 mov %rbp,%rax 1f: 8b 9c 9c d8 00 00 00 mov 0xd8(%rsp,%rbx,4),%ebx 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx <-- trapping instruction 2f: 48 89 e8 mov %rbp,%rax 32: 83 e0 07 and $0x7,%eax 35: 83 c0 03 add $0x3,%eax 38: 38 d0 cmp %dl,%al 3a: 7c 08 jl 0x44 3c: 84 d2 test %dl,%dl 3e: 0f .byte 0xf 3f: 85 .byte 0x85