Warning: Permanently added '10.128.0.194' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.100470][ T8419] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 78.100483][ T8419] #PF: supervisor instruction fetch in kernel mode [ 78.100491][ T8419] #PF: error_code(0x0010) - not-present page [ 78.100499][ T8419] PGD 139e9067 P4D 139e9067 PUD 18ec0067 PMD 0 [ 78.100518][ T8419] Oops: 0010 [#1] PREEMPT SMP KASAN [ 78.100531][ T8419] CPU: 0 PID: 8419 Comm: syz-executor302 Not tainted 5.12.0-rc4-syzkaller #0 [ 78.100545][ T8419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.100552][ T8419] RIP: 0010:0x0 [ 78.100567][ T8419] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 78.100573][ T8419] RSP: 0018:ffffc90000eef850 EFLAGS: 00010292 [ 78.100584][ T8419] RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007 [ 78.100592][ T8419] RDX: 0000000000000002 RSI: ffff8880194cf000 RDI: ffff888010879000 [ 78.100601][ T8419] RBP: ffff888010879000 R08: 0000000000000000 R09: ffffffff83f62fda [ 78.100610][ T8419] R10: 0000000000000003 R11: 0000000000000018 R12: ffff8880194cf000 [ 78.100618][ T8419] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000720 [ 78.100627][ T8419] FS: 0000000000e36300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 78.100642][ T8419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.100652][ T8419] CR2: ffffffffffffffd6 CR3: 00000000155e5000 CR4: 00000000001506f0 [ 78.100661][ T8419] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.100668][ T8419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.100677][ T8419] Call Trace: [ 78.100681][ T8419] fbcon_cursor+0x50e/0x620 [ 78.100715][ T8419] hide_cursor+0x85/0x280 [ 78.100728][ T8419] redraw_screen+0x5b4/0x740 [ 78.100740][ T8419] ? wait_for_completion_io+0x270/0x270 [ 78.100759][ T8419] ? csi_J+0xab0/0xab0 [ 78.100772][ T8419] vc_do_resize+0xed8/0x1150 [ 78.100787][ T8419] ? vc_init+0x5a0/0x5a0 [ 78.100799][ T8419] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 78.100817][ T8419] fbcon_set_disp+0x7a8/0xe10 [ 78.100831][ T8419] set_con2fb_map+0x7a6/0xf80 [ 78.100844][ T8419] ? drm_fb_helper_blank+0x250/0x250 [ 78.100860][ T8419] fbcon_set_con2fb_map_ioctl+0x165/0x220 [ 78.100875][ T8419] ? fbcon_get_requirement+0x7a0/0x7a0 [ 78.100890][ T8419] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 78.100905][ T8419] do_fb_ioctl+0x5b6/0x690 [ 78.100922][ T8419] ? fb_getput_cmap+0x270/0x270 [ 78.100936][ T8419] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 78.100954][ T8419] ? __lock_acquire+0x16b3/0x54c0 [ 78.100972][ T8419] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 78.100987][ T8419] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 78.101003][ T8419] ? do_vfs_ioctl+0x27d/0x1090 [ 78.101018][ T8419] ? generic_block_fiemap+0x60/0x60 [ 78.101031][ T8419] ? find_held_lock+0x2d/0x110 [ 78.101045][ T8419] ? __context_tracking_exit+0xb8/0xe0 [ 78.101061][ T8419] ? lock_downgrade+0x6e0/0x6e0 [ 78.101076][ T8419] fb_ioctl+0xe7/0x150 [ 78.101090][ T8419] ? do_fb_ioctl+0x690/0x690 [ 78.101105][ T8419] __x64_sys_ioctl+0x193/0x200 [ 78.101119][ T8419] do_syscall_64+0x2d/0x70 [ 78.101131][ T8419] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 78.101148][ T8419] RIP: 0033:0x43eed9 [ 78.101157][ T8419] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 78.101171][ T8419] RSP: 002b:00007fff742ea708 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 78.101184][ T8419] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043eed9 [ 78.101192][ T8419] RDX: 0000000020000040 RSI: 0000000000004610 RDI: 0000000000000004 [ 78.101201][ T8419] RBP: 0000000000402ec0 R08: 0000000000400488 R09: 0000000000400488 [ 78.101209][ T8419] R10: 0000000000400488 R11: 0000000000000246 R12: 0000000000402f50 [ 78.101218][ T8419] R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488 [ 78.101229][ T8419] Modules linked in: [ 78.101236][ T8419] CR2: 0000000000000000 [ 78.101246][ T8419] ---[ end trace a82c7f1a7531a47d ]--- [ 78.101252][ T8419] RIP: 0010:0x0 [ 78.101261][ T8419] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 78.101267][ T8419] RSP: 0018:ffffc90000eef850 EFLAGS: 00010292 [ 78.101277][ T8419] RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007 [ 78.101285][ T8419] RDX: 0000000000000002 RSI: ffff8880194cf000 RDI: ffff888010879000 [ 78.101294][ T8419] RBP: ffff888010879000 R08: 0000000000000000 R09: ffffffff83f62fda [ 78.101302][ T8419] R10: 0000000000000003 R11: 0000000000000018 R12: ffff8880194cf000 [ 78.101311][ T8419] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000720 [ 78.101319][ T8419] FS: 0000000000e36300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 78.101334][ T8419] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.101351][ T8419] CR2: ffffffffffffffd6 CR3: 00000000155e5000 CR4: 00000000001506f0 [ 78.101360][ T8419] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.101368][ T8419] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.101377][ T8419] Kernel panic - not syncing: Fatal exception [ 78.102073][ T8419] Kernel Offset: disabled [ 78.632665][ T8419] Rebooting in 86400 seconds..