audit: type=1800 audit(1661253046.086:110): pid=25782 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.4" name="memory.events" dev="sda1" ino=13899 res=0 IPVS: ftp: loaded support on port[0] = 21 EXT4-fs (loop0): mounted filesystem without journal. Opts: grpquota,,errors=continue BUG: unable to handle kernel paging request at ffff88800100018c PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 22899 Comm: agetty Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RIP: 0010:cfb_imageblit+0x99b/0x1040 drivers/video/fbdev/core/cfbimgblt.c:302 Code: e0 09 44 24 04 e8 55 a2 c7 fd 45 39 e7 0f 87 44 ff ff ff e8 57 a1 c7 fd 48 8b 44 24 08 8b 4c 24 04 48 8d 78 04 48 89 7c 24 08 <89> 08 44 89 e6 44 89 ff e8 28 a2 c7 fd 45 39 e7 0f 85 04 ff ff ff RSP: 0018:ffff8880688c76e8 EFLAGS: 00010293 RAX: ffff88800100018c RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff839ae419 RDI: ffff888001000190 RBP: 0000000000000000 R08: ffff8880b074cf3f R09: 000000000000001c R10: 0000000000000004 R11: 0000000000000000 R12: 000000000000001c R13: 0000000000000000 R14: ffff8880b074cf3d R15: 000000000000001c FS: 00007f9635d96500(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88800100018c CR3: 000000009a58e000 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 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74 bit_cursor+0x1126/0x1740 drivers/video/fbdev/core/bitblit.c:377 fbcon_cursor+0x531/0x710 drivers/video/fbdev/core/fbcon.c:1312 set_cursor drivers/tty/vt/vt.c:915 [inline] set_cursor+0x1dd/0x230 drivers/tty/vt/vt.c:906 con_flush_chars drivers/tty/vt/vt.c:3243 [inline] con_flush_chars drivers/tty/vt/vt.c:3232 [inline] con_write+0x8f/0xb0 drivers/tty/vt/vt.c:3164 n_tty_write+0xa03/0xff0 drivers/tty/n_tty.c:2354 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: 0033:0x7f96358b3970 Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e 9b 01 00 48 89 04 24 RSP: 002b:00007ffd24d16788 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f96358b3970 RDX: 0000000000000001 RSI: 00007f9635b72683 RDI: 0000000000000001 RBP: 00007f9635b72683 R08: 00007f9635b73760 R09: 00007f9635d96500 R10: 0000000000000073 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000001 R14: 00007f9635b72600 R15: 0000000000000001 Modules linked in: CR2: ffff88800100018c ---[ end trace e631bc70ba0b3d1b ]--- RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline] RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RIP: 0010:cfb_imageblit+0x99b/0x1040 drivers/video/fbdev/core/cfbimgblt.c:302 Code: e0 09 44 24 04 e8 55 a2 c7 fd 45 39 e7 0f 87 44 ff ff ff e8 57 a1 c7 fd 48 8b 44 24 08 8b 4c 24 04 48 8d 78 04 48 89 7c 24 08 <89> 08 44 89 e6 44 89 ff e8 28 a2 c7 fd 45 39 e7 0f 85 04 ff ff ff RSP: 0018:ffff8880688c76e8 EFLAGS: 00010293 RAX: ffff88800100018c RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff839ae419 RDI: ffff888001000190 RBP: 0000000000000000 R08: ffff8880b074cf3f R09: 000000000000001c R10: 0000000000000004 R11: 0000000000000000 R12: 000000000000001c R13: 0000000000000000 R14: ffff8880b074cf3d R15: 000000000000001c FS: 00007f9635d96500(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88800100018c CR3: 000000009a58e000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e0 09 loopne 0xb 2: 44 24 04 rex.R and $0x4,%al 5: e8 55 a2 c7 fd callq 0xfdc7a25f a: 45 39 e7 cmp %r12d,%r15d d: 0f 87 44 ff ff ff ja 0xffffff57 13: e8 57 a1 c7 fd callq 0xfdc7a16f 18: 48 8b 44 24 08 mov 0x8(%rsp),%rax 1d: 8b 4c 24 04 mov 0x4(%rsp),%ecx 21: 48 8d 78 04 lea 0x4(%rax),%rdi 25: 48 89 7c 24 08 mov %rdi,0x8(%rsp) * 2a: 89 08 mov %ecx,(%rax) <-- trapping instruction 2c: 44 89 e6 mov %r12d,%esi 2f: 44 89 ff mov %r15d,%edi 32: e8 28 a2 c7 fd callq 0xfdc7a25f 37: 45 39 e7 cmp %r12d,%r15d 3a: 0f 85 04 ff ff ff jne 0xffffff44