RBP: 00007f47292d3090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f47285e6038 R14: 00007f47285e5fa0 R15: 00007ffec9c9c2b8 BUG: unable to handle page fault for address: fffff520046e91fc #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffed067 P4D 23ffed067 PUD 1baea067 PMD 0 Oops: Oops: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 7902 Comm: syz.1.431 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:fb_read_offset drivers/video/fbdev/core/sysmem.h:38 [inline] RIP: 0010:fb_bitblit drivers/video/fbdev/core/fb_imageblit.h:137 [inline] RIP: 0010:fb_bitmap1x_imageblit drivers/video/fbdev/core/fb_imageblit.h:275 [inline] RIP: 0010:fb_bitmap_imageblit drivers/video/fbdev/core/fb_imageblit.h:477 [inline] RIP: 0010:fb_imageblit drivers/video/fbdev/core/fb_imageblit.h:492 [inline] RIP: 0010:sys_imageblit+0x15bc/0x1e60 drivers/video/fbdev/core/sysimgblt.c:24 Code: 31 c5 48 89 d8 48 c1 e8 03 42 80 3c 38 00 0f 85 64 06 00 00 48 89 2b e9 d1 f3 ff ff e8 2d 8a c5 fc 48 8b 44 24 10 48 c1 e8 03 <42> 80 3c 38 00 0f 85 1a 08 00 00 48 8b 44 24 10 0f b6 4c 24 20 48 RSP: 0018:ffffc90002ed76a8 EFLAGS: 00010a06 RAX: 1ffff920046e91fc RBX: 0000000000000020 RCX: ffffffff84f8c2ed RDX: ffff88802bc30000 RSI: ffffffff84f8cec3 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000020 R11: ffff88802bc30b30 R12: ffff888141390ca0 R13: 0000000000000008 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f47292d36c0(0000) GS:ffff8881249fc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff520046e91fc CR3: 000000007ca74000 CR4: 00000000003526f0 Call Trace: drm_fbdev_shmem_defio_imageblit+0x20/0x130 drivers/gpu/drm/drm_fbdev_shmem.c:39 cw_putcs_aligned drivers/video/fbdev/core/fbcon_cw.c:110 [inline] cw_putcs+0x917/0xbb0 drivers/video/fbdev/core/fbcon_cw.c:158 fbcon_putcs+0x3b0/0x480 drivers/video/fbdev/core/fbcon.c:1343 do_update_region+0x2e9/0x3f0 drivers/tty/vt/vt.c:628 redraw_screen+0x63f/0x760 drivers/tty/vt/vt.c:980 fbcon_modechanged+0x456/0x6f0 drivers/video/fbdev/core/fbcon.c:2726 fbcon_rotate drivers/video/fbdev/core/fbcon.c:231 [inline] rotate_store+0x258/0x2f0 drivers/video/fbdev/core/fbcon.c:3237 dev_attr_store+0x58/0x80 drivers/base/core.c:2437 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:142 kernfs_fop_write_iter+0x3af/0x570 fs/kernfs/file.c:352 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x7d3/0x11d0 fs/read_write.c:686 ksys_write+0x12a/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f472838f7c9 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:00007f47292d3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f47285e5fa0 RCX: 00007f472838f7c9 RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f47292d3090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007f47285e6038 R14: 00007f47285e5fa0 R15: 00007ffec9c9c2b8 Modules linked in: CR2: fffff520046e91fc ---[ end trace 0000000000000000 ]--- RIP: 0010:fb_read_offset drivers/video/fbdev/core/sysmem.h:38 [inline] RIP: 0010:fb_bitblit drivers/video/fbdev/core/fb_imageblit.h:137 [inline] RIP: 0010:fb_bitmap1x_imageblit drivers/video/fbdev/core/fb_imageblit.h:275 [inline] RIP: 0010:fb_bitmap_imageblit drivers/video/fbdev/core/fb_imageblit.h:477 [inline] RIP: 0010:fb_imageblit drivers/video/fbdev/core/fb_imageblit.h:492 [inline] RIP: 0010:sys_imageblit+0x15bc/0x1e60 drivers/video/fbdev/core/sysimgblt.c:24 Code: 31 c5 48 89 d8 48 c1 e8 03 42 80 3c 38 00 0f 85 64 06 00 00 48 89 2b e9 d1 f3 ff ff e8 2d 8a c5 fc 48 8b 44 24 10 48 c1 e8 03 <42> 80 3c 38 00 0f 85 1a 08 00 00 48 8b 44 24 10 0f b6 4c 24 20 48 RSP: 0018:ffffc90002ed76a8 EFLAGS: 00010a06 RAX: 1ffff920046e91fc RBX: 0000000000000020 RCX: ffffffff84f8c2ed RDX: ffff88802bc30000 RSI: ffffffff84f8cec3 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000020 R11: ffff88802bc30b30 R12: ffff888141390ca0 R13: 0000000000000008 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f47292d36c0(0000) GS:ffff8881249fc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffff520046e91fc CR3: 000000007ca74000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 31 c5 xor %eax,%ebp 2: 48 89 d8 mov %rbx,%rax 5: 48 c1 e8 03 shr $0x3,%rax 9: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) e: 0f 85 64 06 00 00 jne 0x678 14: 48 89 2b mov %rbp,(%rbx) 17: e9 d1 f3 ff ff jmp 0xfffff3ed 1c: e8 2d 8a c5 fc call 0xfcc58a4e 21: 48 8b 44 24 10 mov 0x10(%rsp),%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 0f 85 1a 08 00 00 jne 0x84f 35: 48 8b 44 24 10 mov 0x10(%rsp),%rax 3a: 0f b6 4c 24 20 movzbl 0x20(%rsp),%ecx 3f: 48 rex.W