BUG: unable to handle page fault for address: fffff52000a14200 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 17ffed067 P4D 17ffed067 PUD 1befe067 PMD 24ff1067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 10233 Comm: syz.6.1197 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline] RIP: 0010:sys_imageblit+0x16fe/0x21d0 drivers/video/fbdev/core/sysimgblt.c:326 Code: 21 f8 83 e0 01 8d 0c 85 03 00 00 00 49 8d 3c 84 38 d1 7c 08 84 d2 0f 85 ae 09 00 00 8b 8c 84 d8 00 00 00 48 89 e8 48 c1 e8 03 <42> 0f b6 14 30 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc9000fe5f610 EFLAGS: 00010a06 RAX: 1ffff92000a14200 RBX: 0000000000000008 RCX: 0000000000aaaaaa RDX: 0000000000000000 RSI: ffffffff850ca511 RDI: ffffc9000fe5f6e8 RBP: ffffc900050a1000 R08: 0000000000000005 R09: 0000000000000007 R10: 0000000000000008 R11: 0000000000000001 R12: ffffc9000fe5f6e8 R13: ffff888024eed020 R14: dffffc0000000000 R15: 0000000000000001 FS: 00007f568a1fc6c0(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff52000a14200 CR3: 000000002b6e8000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: drm_fbdev_shmem_defio_imageblit+0x20/0x130 drivers/gpu/drm/drm_fbdev_shmem.c:37 soft_cursor+0x520/0xa10 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0xe90/0x1800 drivers/video/fbdev/core/bitblit.c:371 fbcon_cursor+0x409/0x5f0 drivers/video/fbdev/core/fbcon.c:1343 hide_cursor+0x84/0x220 drivers/tty/vt/vt.c:846 redraw_screen+0x5d6/0x760 drivers/tty/vt/vt.c:948 fbcon_set_disp+0x7cc/0xe00 drivers/video/fbdev/core/fbcon.c:1412 con2fb_init_display drivers/video/fbdev/core/fbcon.c:812 [inline] set_con2fb_map+0x6fd/0x1060 drivers/video/fbdev/core/fbcon.c:885 fbcon_set_con2fb_map_ioctl+0x16d/0x220 drivers/video/fbdev/core/fbcon.c:3112 do_fb_ioctl+0x32a/0x7d0 drivers/video/fbdev/core/fb_chrdev.c:138 fb_ioctl+0xe5/0x150 drivers/video/fbdev/core/fb_chrdev.c:169 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f568938cda9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f568a1fc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f56895a5fa0 RCX: 00007f568938cda9 RDX: 00000000200000c0 RSI: 0000000000004610 RDI: 0000000000000003 RBP: 00007f568940e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f56895a5fa0 R15: 00007ffcc8204608 Modules linked in: CR2: fffff52000a14200 ---[ end trace 0000000000000000 ]--- RIP: 0010:fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline] RIP: 0010:sys_imageblit+0x16fe/0x21d0 drivers/video/fbdev/core/sysimgblt.c:326 Code: 21 f8 83 e0 01 8d 0c 85 03 00 00 00 49 8d 3c 84 38 d1 7c 08 84 d2 0f 85 ae 09 00 00 8b 8c 84 d8 00 00 00 48 89 e8 48 c1 e8 03 <42> 0f b6 14 30 48 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffffc9000fe5f610 EFLAGS: 00010a06 RAX: 1ffff92000a14200 RBX: 0000000000000008 RCX: 0000000000aaaaaa RDX: 0000000000000000 RSI: ffffffff850ca511 RDI: ffffc9000fe5f6e8 RBP: ffffc900050a1000 R08: 0000000000000005 R09: 0000000000000007 R10: 0000000000000008 R11: 0000000000000001 R12: ffffc9000fe5f6e8 R13: ffff888024eed020 R14: dffffc0000000000 R15: 0000000000000001 FS: 00007f568a1fc6c0(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff52000a14200 CR3: 000000002b6e8000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 21 f8 and %edi,%eax 2: 83 e0 01 and $0x1,%eax 5: 8d 0c 85 03 00 00 00 lea 0x3(,%rax,4),%ecx c: 49 8d 3c 84 lea (%r12,%rax,4),%rdi 10: 38 d1 cmp %dl,%cl 12: 7c 08 jl 0x1c 14: 84 d2 test %dl,%dl 16: 0f 85 ae 09 00 00 jne 0x9ca 1c: 8b 8c 84 d8 00 00 00 mov 0xd8(%rsp,%rax,4),%ecx 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 14 30 movzbl (%rax,%r14,1),%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