BTRFS info (device loop2): disk space caching is enabled BTRFS info (device loop2): has skinny extents BUG: unable to handle kernel paging request at ffff888001895800 PGD de01067 P4D de01067 PUD de02067 PMD 80000000018001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 23312 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline] RIP: 0010:cfb_imageblit+0xbac/0x1040 drivers/video/fbdev/core/cfbimgblt.c:300 Code: b6 34 31 48 89 c1 83 e1 07 83 c1 03 40 38 f1 7c 09 40 84 f6 0f 85 07 04 00 00 8b 7c 24 18 4d 8d 6f 04 23 38 8b 44 24 28 31 f8 <41> 89 07 31 ff 44 89 e6 e8 97 a0 c7 fd 45 85 e4 75 0f e8 1d 9f c7 RSP: 0018:ffff88803eab7388 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888238d095c0 RCX: 0000000000000003 RDX: 00000000000048ce RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000006 R08: 0000000000007fc8 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000004 R13: ffff888001895804 R14: dffffc0000000000 R15: ffff888001895800 FS: 00007f51dd850700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001895800 CR3: 00000000a94de000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1207 [inline] vga16fb_imageblit+0x6b4/0x2260 drivers/video/fbdev/vga16fb.c:1260 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:139 [inline] bit_putcs+0x6e2/0xd10 drivers/video/fbdev/core/bitblit.c:188 fbcon_putcs+0x336/0x4f0 drivers/video/fbdev/core/fbcon.c:1269 fbcon_redraw_move.constprop.0+0x1a3/0x2b0 drivers/video/fbdev/core/fbcon.c:1538 ypan_down_redraw drivers/video/fbdev/core/fbcon.c:1506 [inline] fbcon_scroll+0x2db4/0x3440 drivers/video/fbdev/core/fbcon.c:1836 con_scroll+0x5f8/0x720 drivers/tty/vt/vt.c:637 csi_L drivers/tty/vt/vt.c:2030 [inline] do_con_trol+0x36aa/0x5970 drivers/tty/vt/vt.c:2409 do_con_write+0xbea/0x1d90 drivers/tty/vt/vt.c:2828 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3163 process_output_block drivers/tty/n_tty.c:593 [inline] n_tty_write+0x3c0/0xff0 drivers/tty/n_tty.c:2331 do_tty_write drivers/tty/tty_io.c:960 [inline] tty_write+0x496/0x810 drivers/tty/tty_io.c:1044 __vfs_write+0xf7/0x770 fs/read_write.c:485 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f51df2dd639 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:00007f51dd850168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f51df3fdf80 RCX: 00007f51df2dd639 RDX: 00000000000001b7 RSI: 0000000020001040 RDI: 0000000000000007 RBP: 00007f51df338ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc75ac005f R14: 00007f51dd850300 R15: 0000000000022000 Modules linked in: CR2: ffff888001895800 ---[ end trace 26730b233ca8e82b ]--- RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline] RIP: 0010:cfb_imageblit+0xbac/0x1040 drivers/video/fbdev/core/cfbimgblt.c:300 Code: b6 34 31 48 89 c1 83 e1 07 83 c1 03 40 38 f1 7c 09 40 84 f6 0f 85 07 04 00 00 8b 7c 24 18 4d 8d 6f 04 23 38 8b 44 24 28 31 f8 <41> 89 07 31 ff 44 89 e6 e8 97 a0 c7 fd 45 85 e4 75 0f e8 1d 9f c7 RSP: 0018:ffff88803eab7388 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888238d095c0 RCX: 0000000000000003 RDX: 00000000000048ce RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000006 R08: 0000000000007fc8 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000004 R13: ffff888001895804 R14: dffffc0000000000 R15: ffff888001895800 FS: 00007f51dd850700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888001895800 CR3: 00000000a94de000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b6 34 mov $0x34,%dh 2: 31 48 89 xor %ecx,-0x77(%rax) 5: c1 83 e1 07 83 c1 03 roll $0x3,-0x3e7cf81f(%rbx) c: 40 38 f1 cmp %sil,%cl f: 7c 09 jl 0x1a 11: 40 84 f6 test %sil,%sil 14: 0f 85 07 04 00 00 jne 0x421 1a: 8b 7c 24 18 mov 0x18(%rsp),%edi 1e: 4d 8d 6f 04 lea 0x4(%r15),%r13 22: 23 38 and (%rax),%edi 24: 8b 44 24 28 mov 0x28(%rsp),%eax 28: 31 f8 xor %edi,%eax * 2a: 41 89 07 mov %eax,(%r15) <-- trapping instruction 2d: 31 ff xor %edi,%edi 2f: 44 89 e6 mov %r12d,%esi 32: e8 97 a0 c7 fd callq 0xfdc7a0ce 37: 45 85 e4 test %r12d,%r12d 3a: 75 0f jne 0x4b 3c: e8 .byte 0xe8 3d: 1d .byte 0x1d 3e: 9f lahf 3f: c7 .byte 0xc7