BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 2292d067 P4D 2292d067 PUD 13e4e067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 1 PID: 11438 Comm: syz-executor.5 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc900026d7850 EFLAGS: 00010292 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffff888143e46000 RDI: ffff888010071000 RBP: ffff888010071000 R08: 0000000000000000 R09: ffffffff83ec668a R10: 0000000000000003 R11: 0000000000000018 R12: ffff888143e46000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000779 FS: 00007f8d37a31700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000013b9d000 CR4: 0000000000350ee0 Call Trace: fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1344 hide_cursor+0x85/0x280 drivers/tty/vt/vt.c:907 redraw_screen+0x5ed/0x790 drivers/tty/vt/vt.c:1012 vc_do_resize+0xed8/0x1150 drivers/tty/vt/vt.c:1326 fbcon_set_disp+0x7a8/0xe10 drivers/video/fbdev/core/fbcon.c:1410 con2fb_init_display drivers/video/fbdev/core/fbcon.c:816 [inline] set_con2fb_map+0x7a6/0xf80 drivers/video/fbdev/core/fbcon.c:887 fbcon_set_con2fb_map_ioctl+0x165/0x220 drivers/video/fbdev/core/fbcon.c:3018 do_fb_ioctl+0x5b6/0x690 drivers/video/fbdev/core/fbmem.c:1156 fb_ioctl+0xe7/0x150 drivers/video/fbdev/core/fbmem.c:1185 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8d37a30c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045e219 RDX: 0000000020000280 RSI: 0000000000004610 RDI: 0000000000000006 RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007fff05e00ddf R14: 00007f8d37a319c0 R15: 000000000119bf8c Modules linked in: CR2: 0000000000000000 BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 2292d067 P4D 2292d067 PUD 13e4e067 PMD 0 Oops: 0010 [#2] PREEMPT SMP KASAN CPU: 1 PID: 11438 Comm: syz-executor.5 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc900026d7278 EFLAGS: 00010086 RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007 RDX: 0000000000000002 RSI: ffff888143e46000 RDI: ffff888010071000 RBP: ffff888010071000 R08: 0000000000000000 R09: ffffffff83ec668a R10: 0000000000000003 R11: 0000000000000018 R12: ffff888143e46000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000779 FS: 00007f8d37a31700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000013b9d000 CR4: 0000000000350ee0 Call Trace: fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1344 hide_cursor+0x85/0x280 drivers/tty/vt/vt.c:907 redraw_screen+0x5ed/0x790 drivers/tty/vt/vt.c:1012 fbcon_blank+0x8c5/0xc30 drivers/video/fbdev/core/fbcon.c:2212 do_unblank_screen+0x25b/0x470 drivers/tty/vt/vt.c:4406 bust_spinlocks+0x5b/0xe0 lib/bust_spinlocks.c:26 oops_end+0x2b/0xe0 arch/x86/kernel/dumpstack.c:361 no_context+0x5f2/0xa20 arch/x86/mm/fault.c:754 __bad_area_nosemaphore+0xa9/0x3e0 arch/x86/mm/fault.c:839 do_user_addr_fault+0x673/0xc60 arch/x86/mm/fault.c:1269 handle_page_fault arch/x86/mm/fault.c:1450 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1506 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc900026d7850 EFLAGS: 00010292 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffff888143e46000 RDI: ffff888010071000 RBP: ffff888010071000 R08: 0000000000000000 R09: ffffffff83ec668a R10: 0000000000000003 R11: 0000000000000018 R12: ffff888143e46000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000779 Modules linked in: CR2: 0000000000000000 ---[ end trace 5932970d71094913 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffffc900026d7850 EFLAGS: 00010292 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffff888143e46000 RDI: ffff888010071000 RBP: ffff888010071000 R08: 0000000000000000 R09: ffffffff83ec668a R10: 0000000000000003 R11: 0000000000000018 R12: ffff888143e46000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000779 FS: 00007f8d37a31700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000013b9d000 CR4: 0000000000350ee0