BUG: unable to handle page fault for address: fffff5200099b200 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 7ffcc067 P4D 7ffcc067 PUD 1c686067 PMD 22c51067 PTE 0 Oops: Oops: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 11068 Comm: syz.3.1482 Not tainted 6.15.0-rc2-syzkaller-00404-g8560697b23dc #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:fb_write_offset drivers/video/fbdev/core/sysmem.h:30 [inline] RIP: 0010:fb_bitmap_2ppw drivers/video/fbdev/core/fb_imageblit.h:364 [inline] RIP: 0010:fb_bitmap_imageblit drivers/video/fbdev/core/fb_imageblit.h:462 [inline] RIP: 0010:fb_imageblit drivers/video/fbdev/core/fb_imageblit.h:492 [inline] RIP: 0010:sys_imageblit+0x17bc/0x1e60 drivers/video/fbdev/core/sysimgblt.c:22 Code: 7c cd 00 48 89 fe 48 c1 ee 03 80 3c 1e 00 0f 85 dc 02 00 00 4d 63 f6 48 8b 8c cc 28 01 00 00 4f 8d 34 f7 4c 89 f6 48 c1 ee 03 <80> 3c 1e 00 0f 85 94 02 00 00 49 89 0e 41 89 c6 8d 4d fd 41 c1 ee RSP: 0018:ffffc90003b07388 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 1ffff9200099b200 RDI: ffffc90003b074b0 RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000003 R10: 0000000000000010 R11: 0000000000000000 R12: ffff888024049021 R13: ffffc90003b074b0 R14: ffffc90004cd9000 R15: ffffc90004cd9000 FS: 0000000000000000(0000) GS:ffff888097abf000(0063) knlGS:00000000f50c6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: fffff5200099b200 CR3: 0000000065d8c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_fbdev_shmem_defio_imageblit+0x20/0x130 drivers/gpu/drm/drm_fbdev_shmem.c:37 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:138 [inline] bit_putcs+0x90f/0xde0 drivers/video/fbdev/core/bitblit.c:187 fbcon_putcs+0x380/0x4a0 drivers/video/fbdev/core/fbcon.c:1309 do_update_region+0x2e6/0x3f0 drivers/tty/vt/vt.c:619 invert_screen+0x1e4/0x590 drivers/tty/vt/vt.c:740 highlight drivers/tty/vt/selection.c:57 [inline] clear_selection drivers/tty/vt/selection.c:87 [inline] clear_selection+0x59/0x70 drivers/tty/vt/selection.c:83 vc_do_resize+0xd9b/0x10e0 drivers/tty/vt/vt.c:1187 vc_resize include/linux/vt_kern.h:49 [inline] fbcon_set_disp+0x7ad/0xe40 drivers/video/fbdev/core/fbcon.c:1410 con2fb_init_display drivers/video/fbdev/core/fbcon.c:811 [inline] set_con2fb_map+0x703/0x1060 drivers/video/fbdev/core/fbcon.c:884 fbcon_set_con2fb_map_ioctl+0x16c/0x220 drivers/video/fbdev/core/fbcon.c:3113 do_fb_ioctl+0x328/0x7e0 drivers/video/fbdev/core/fb_chrdev.c:138 fb_compat_ioctl+0x55e/0x670 drivers/video/fbdev/core/fb_chrdev.c:293 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline] __se_compat_sys_ioctl fs/ioctl.c:947 [inline] __ia32_compat_sys_ioctl+0x24c/0x360 fs/ioctl.c:947 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fa2579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f50c655c EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000004610 RDX: 00000000800000c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: fffff5200099b200 ---[ end trace 0000000000000000 ]--- RIP: 0010:fb_write_offset drivers/video/fbdev/core/sysmem.h:30 [inline] RIP: 0010:fb_bitmap_2ppw drivers/video/fbdev/core/fb_imageblit.h:364 [inline] RIP: 0010:fb_bitmap_imageblit drivers/video/fbdev/core/fb_imageblit.h:462 [inline] RIP: 0010:fb_imageblit drivers/video/fbdev/core/fb_imageblit.h:492 [inline] RIP: 0010:sys_imageblit+0x17bc/0x1e60 drivers/video/fbdev/core/sysimgblt.c:22 Code: 7c cd 00 48 89 fe 48 c1 ee 03 80 3c 1e 00 0f 85 dc 02 00 00 4d 63 f6 48 8b 8c cc 28 01 00 00 4f 8d 34 f7 4c 89 f6 48 c1 ee 03 <80> 3c 1e 00 0f 85 94 02 00 00 49 89 0e 41 89 c6 8d 4d fd 41 c1 ee RSP: 0018:ffffc90003b07388 EFLAGS: 00010a06 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 1ffff9200099b200 RDI: ffffc90003b074b0 RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000003 R10: 0000000000000010 R11: 0000000000000000 R12: ffff888024049021 R13: ffffc90003b074b0 R14: ffffc90004cd9000 R15: ffffc90004cd9000 FS: 0000000000000000(0000) GS:ffff888097abf000(0063) knlGS:00000000f50c6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: fffff5200099b200 CR3: 0000000065d8c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 7c cd jl 0xffffffcf 2: 00 48 89 add %cl,-0x77(%rax) 5: fe 48 c1 decb -0x3f(%rax) 8: ee out %al,(%dx) 9: 03 80 3c 1e 00 0f add 0xf001e3c(%rax),%eax f: 85 dc test %ebx,%esp 11: 02 00 add (%rax),%al 13: 00 4d 63 add %cl,0x63(%rbp) 16: f6 48 8b 8c testb $0x8c,-0x75(%rax) 1a: cc int3 1b: 28 01 sub %al,(%rcx) 1d: 00 00 add %al,(%rax) 1f: 4f 8d 34 f7 lea (%r15,%r14,8),%r14 23: 4c 89 f6 mov %r14,%rsi 26: 48 c1 ee 03 shr $0x3,%rsi * 2a: 80 3c 1e 00 cmpb $0x0,(%rsi,%rbx,1) <-- trapping instruction 2e: 0f 85 94 02 00 00 jne 0x2c8 34: 49 89 0e mov %rcx,(%r14) 37: 41 89 c6 mov %eax,%r14d 3a: 8d 4d fd lea -0x3(%rbp),%ecx 3d: 41 rex.B 3e: c1 .byte 0xc1 3f: ee out %al,(%dx)