BUG: unable to handle page fault for address: fffff5200094ca7c #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 7ffcc067 P4D 7ffcc067 PUD 1ca95067 PMD 24702067 PTE 0 Oops: Oops: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 13594 Comm: syz.0.1909 Not tainted syzkaller #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:374 [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+0x1985/0x1e60 drivers/video/fbdev/core/sysimgblt.c:24 Code: e8 06 83 e0 03 49 8d 7c c5 00 48 89 fa 48 c1 ea 03 80 3c 1a 00 0f 85 27 03 00 00 4c 89 f2 48 8b 84 c4 28 01 00 00 48 c1 ea 03 <80> 3c 1a 00 0f 85 aa 00 00 00 49 89 06 8b 3c 24 83 c5 01 41 c1 e4 RSP: 0018:ffffc90003db7378 EFLAGS: 00010a02 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc90007bd2000 RDX: 1ffff9200094ca7c RSI: ffffffff852dfd97 RDI: ffffc90003db74a0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90003db74a0 R14: ffffc90004a653e0 R15: ffffc90004a653e0 FS: 0000000000000000(0000) GS:ffff8880977c3000(0063) knlGS:00000000f5516b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: fffff5200094ca7c CR3: 000000004a12a000 CR4: 0000000000352ef0 Call Trace: drm_fbdev_shmem_defio_imageblit+0x20/0x130 drivers/gpu/drm/drm_fbdev_shmem.c:38 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:138 [inline] bit_putcs+0x90f/0xde0 drivers/video/fbdev/core/bitblit.c:187 fbcon_putcs+0x384/0x4a0 drivers/video/fbdev/core/fbcon.c:1327 do_update_region+0x2e6/0x3f0 drivers/tty/vt/vt.c:627 invert_screen+0x1e4/0x590 drivers/tty/vt/vt.c:748 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:1195 vc_resize include/linux/vt_kern.h:49 [inline] fbcon_set_disp+0x7ad/0xe50 drivers/video/fbdev/core/fbcon.c:1430 con2fb_init_display drivers/video/fbdev/core/fbcon.c:828 [inline] set_con2fb_map+0x703/0x1080 drivers/video/fbdev/core/fbcon.c:902 fbcon_set_con2fb_map_ioctl+0x16c/0x220 drivers/video/fbdev/core/fbcon.c:3132 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:696 [inline] __se_compat_sys_ioctl fs/ioctl.c:639 [inline] __ia32_compat_sys_ioctl+0x242/0x370 fs/ioctl.c:639 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x7c/0x3a0 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: 0023:0xf7ff7579 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:00000000f551655c EFLAGS: 00000296 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000004610 RDX: 0000000080000180 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: fffff5200094ca7c ---[ 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:374 [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+0x1985/0x1e60 drivers/video/fbdev/core/sysimgblt.c:24 Code: e8 06 83 e0 03 49 8d 7c c5 00 48 89 fa 48 c1 ea 03 80 3c 1a 00 0f 85 27 03 00 00 4c 89 f2 48 8b 84 c4 28 01 00 00 48 c1 ea 03 <80> 3c 1a 00 0f 85 aa 00 00 00 49 89 06 8b 3c 24 83 c5 01 41 c1 e4 RSP: 0018:ffffc90003db7378 EFLAGS: 00010a02 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc90007bd2000 RDX: 1ffff9200094ca7c RSI: ffffffff852dfd97 RDI: ffffc90003db74a0 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 R13: ffffc90003db74a0 R14: ffffc90004a653e0 R15: ffffc90004a653e0 FS: 0000000000000000(0000) GS:ffff8880977c3000(0063) knlGS:00000000f5516b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: fffff5200094ca7c CR3: 000000004a12a000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: e8 06 83 e0 03 call 0x3e0830b 5: 49 8d 7c c5 00 lea 0x0(%r13,%rax,8),%rdi a: 48 89 fa mov %rdi,%rdx d: 48 c1 ea 03 shr $0x3,%rdx 11: 80 3c 1a 00 cmpb $0x0,(%rdx,%rbx,1) 15: 0f 85 27 03 00 00 jne 0x342 1b: 4c 89 f2 mov %r14,%rdx 1e: 48 8b 84 c4 28 01 00 mov 0x128(%rsp,%rax,8),%rax 25: 00 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 1a 00 cmpb $0x0,(%rdx,%rbx,1) <-- trapping instruction 2e: 0f 85 aa 00 00 00 jne 0xde 34: 49 89 06 mov %rax,(%r14) 37: 8b 3c 24 mov (%rsp),%edi 3a: 83 c5 01 add $0x1,%ebp 3d: 41 rex.B 3e: c1 .byte 0xc1 3f: e4 .byte 0xe4