general protection fault, probably for non-canonical address 0xdffffc001fffffd7: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x00000000fffffeb8-0x00000000fffffebf] CPU: 1 PID: 28294 Comm: syz-executor.1 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:fbcon_cursor+0xda/0xc40 drivers/video/fbdev/core/fbcon.c:1387 Code: 8b 45 d0 48 8d 98 a0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a0 22 e7 fd 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 13 08 00 00 44 89 75 c4 0f b7 03 89 45 c0 RSP: 0018:ffffc9000556f798 EFLAGS: 00010207 RAX: 000000001fffffd7 RBX: 00000000fffffebc RCX: 0000000000040000 RDX: ffffc9000711a000 RSI: 0000000000001909 RDI: 000000000000190a RBP: ffffc9000556f800 R08: ffffffff83fef7c9 R09: fffffbfff12d3744 R10: fffffbfff12d3744 R11: 0000000000000000 R12: ffff8880a3946468 R13: dffffc0000000000 R14: 0000000000000002 R15: 1ffff11014728c8d FS: 00007f159f269700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2eebbb3518 CR3: 00000000366e5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hide_cursor+0xa7/0x360 drivers/tty/vt/vt.c:895 redraw_screen+0x163/0x1830 drivers/tty/vt/vt.c:999 fbcon_do_set_font+0xd06/0x1240 drivers/video/fbdev/core/fbcon.c:2612 fbcon_set_font+0x7a0/0x990 drivers/video/fbdev/core/fbcon.c:2703 con_font_set drivers/tty/vt/vt.c:4549 [inline] con_font_op+0xeb9/0x1620 drivers/tty/vt/vt.c:4614 vt_ioctl+0xa9b/0x3a30 drivers/tty/vt/vt_ioctl.c:918 tty_ioctl+0xee6/0x15c0 drivers/tty/tty_io.c:2660 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl fs/ioctl.c:763 [inline] __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl+0x113/0x190 fs/ioctl.c:770 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:770 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c479 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f159f268c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f159f2696d4 RCX: 000000000045c479 RDX: 00000000200004c0 RSI: 0000000000004b61 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000041a R14: 00000000004c67ad R15: 000000000076bf2c Modules linked in: general protection fault, probably for non-canonical address 0xdffffc001fffffd7: 0000 [#2] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x00000000fffffeb8-0x00000000fffffebf] CPU: 1 PID: 28294 Comm: syz-executor.1 Not tainted 5.6.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:fbcon_cursor+0xda/0xc40 drivers/video/fbdev/core/fbcon.c:1387 Code: 8b 45 d0 48 8d 98 a0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a0 22 e7 fd 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 13 08 00 00 44 89 75 c4 0f b7 03 89 45 c0 RSP: 0018:ffffc9000556f2f8 EFLAGS: 00010007 RAX: 000000001fffffd7 RBX: 00000000fffffebc RCX: 0000000000040000 RDX: ffffc9000711a000 RSI: 0000000000007379 RDI: 000000000000737a RBP: ffffc9000556f360 R08: ffffffff83cea828 R09: fffffbfff12d3744 R10: fffffbfff12d3744 R11: 0000000000000000 R12: ffff8880a3946468 R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff11014728c8d FS: 00007f159f269700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2eebbb3518 CR3: 00000000366e5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fbcon_blank+0x47a/0xa60 drivers/video/fbdev/core/fbcon.c:2413 do_unblank_screen+0x299/0xb60 drivers/tty/vt/vt.c:4288 unblank_screen+0x10/0x20 drivers/tty/vt/vt.c:4307 bust_spinlocks+0x47/0xe0 lib/bust_spinlocks.c:26 oops_end+0x38/0x100 arch/x86/kernel/dumpstack.c:336 die_addr+0xc3/0xe0 arch/x86/kernel/dumpstack.c:434 do_general_protection+0x325/0x570 arch/x86/kernel/traps.c:564 general_protection+0x2d/0x40 arch/x86/entry/entry_64.S:1202 RIP: 0010:fbcon_cursor+0xda/0xc40 drivers/video/fbdev/core/fbcon.c:1387 Code: 8b 45 d0 48 8d 98 a0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a0 22 e7 fd 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 13 08 00 00 44 89 75 c4 0f b7 03 89 45 c0 RSP: 0018:ffffc9000556f798 EFLAGS: 00010207 RAX: 000000001fffffd7 RBX: 00000000fffffebc RCX: 0000000000040000 RDX: ffffc9000711a000 RSI: 0000000000001909 RDI: 000000000000190a RBP: ffffc9000556f800 R08: ffffffff83fef7c9 R09: fffffbfff12d3744 R10: fffffbfff12d3744 R11: 0000000000000000 R12: ffff8880a3946468 R13: dffffc0000000000 R14: 0000000000000002 R15: 1ffff11014728c8d hide_cursor+0xa7/0x360 drivers/tty/vt/vt.c:895 redraw_screen+0x163/0x1830 drivers/tty/vt/vt.c:999 fbcon_do_set_font+0xd06/0x1240 drivers/video/fbdev/core/fbcon.c:2612 fbcon_set_font+0x7a0/0x990 drivers/video/fbdev/core/fbcon.c:2703 con_font_set drivers/tty/vt/vt.c:4549 [inline] con_font_op+0xeb9/0x1620 drivers/tty/vt/vt.c:4614 vt_ioctl+0xa9b/0x3a30 drivers/tty/vt/vt_ioctl.c:918 tty_ioctl+0xee6/0x15c0 drivers/tty/tty_io.c:2660 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl fs/ioctl.c:763 [inline] __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl+0x113/0x190 fs/ioctl.c:770 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:770 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c479 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f159f268c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f159f2696d4 RCX: 000000000045c479 RDX: 00000000200004c0 RSI: 0000000000004b61 RDI: 0000000000000003 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000041a R14: 00000000004c67ad R15: 000000000076bf2c Modules linked in: ---[ end trace 7b301150c95417e2 ]--- RIP: 0010:fbcon_cursor+0xda/0xc40 drivers/video/fbdev/core/fbcon.c:1387 Code: 8b 45 d0 48 8d 98 a0 03 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 a0 22 e7 fd 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 13 08 00 00 44 89 75 c4 0f b7 03 89 45 c0 RSP: 0018:ffffc9000556f798 EFLAGS: 00010207 RAX: 000000001fffffd7 RBX: 00000000fffffebc RCX: 0000000000040000 RDX: ffffc9000711a000 RSI: 0000000000001909 RDI: 000000000000190a RBP: ffffc9000556f800 R08: ffffffff83fef7c9 R09: fffffbfff12d3744 R10: fffffbfff12d3744 R11: 0000000000000000 R12: ffff8880a3946468 R13: dffffc0000000000 R14: 0000000000000002 R15: 1ffff11014728c8d FS: 00007f159f269700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2eebbb3518 CR3: 00000000366e5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400