Warning: Permanently added '10.128.0.125' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 75.340641][ T8390] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 75.340654][ T8390] #PF: supervisor instruction fetch in kernel mode [ 75.340661][ T8390] #PF: error_code(0x0010) - not-present page [ 75.340669][ T8390] PGD 29001067 P4D 29001067 PUD 1173a067 PMD 0 [ 75.340689][ T8390] Oops: 0010 [#1] PREEMPT SMP KASAN [ 75.340701][ T8390] CPU: 1 PID: 8390 Comm: syz-executor192 Not tainted 5.12.0-rc4-syzkaller #0 [ 75.340715][ T8390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.340722][ T8390] RIP: 0010:0x0 [ 75.340737][ T8390] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 75.340744][ T8390] RSP: 0018:ffffc90001abf760 EFLAGS: 00010296 [ 75.340754][ T8390] RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007 [ 75.340763][ T8390] RDX: 0000000000000002 RSI: ffff888018ffc000 RDI: ffff888010479000 [ 75.340771][ T8390] RBP: ffff888010479000 R08: 0000000000000000 R09: ffffffff83f6450a [ 75.340780][ T8390] R10: 0000000000000003 R11: 0000000000000018 R12: ffff888018ffc000 [ 75.340788][ T8390] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000720 [ 75.340797][ T8390] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:0000000008ac92c0 [ 75.340811][ T8390] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 75.340821][ T8390] CR2: ffffffffffffffd6 CR3: 0000000027093000 CR4: 00000000001506e0 [ 75.340829][ T8390] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.340837][ T8390] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.340846][ T8390] Call Trace: [ 75.340850][ T8390] fbcon_cursor+0x50e/0x620 [ 75.340918][ T8390] hide_cursor+0x85/0x280 [ 75.340931][ T8390] redraw_screen+0x5b4/0x740 [ 75.340943][ T8390] ? wait_for_completion_io+0x270/0x270 [ 75.340960][ T8390] ? csi_J+0xab0/0xab0 [ 75.340973][ T8390] vc_do_resize+0xed8/0x1150 [ 75.340988][ T8390] ? vc_init+0x5a0/0x5a0 [ 75.341001][ T8390] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 75.341018][ T8390] fbcon_set_disp+0x7a8/0xe10 [ 75.341032][ T8390] set_con2fb_map+0x7a6/0xf80 [ 75.341046][ T8390] ? drm_fb_helper_blank+0x250/0x250 [ 75.341062][ T8390] fbcon_set_con2fb_map_ioctl+0x165/0x220 [ 75.341077][ T8390] ? fbcon_get_requirement+0x7a0/0x7a0 [ 75.341098][ T8390] ? find_held_lock+0x2d/0x110 [ 75.341112][ T8390] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 75.341128][ T8390] do_fb_ioctl+0x5b6/0x690 [ 75.341143][ T8390] ? fb_getput_cmap+0x270/0x270 [ 75.341158][ T8390] ? lock_downgrade+0x6e0/0x6e0 [ 75.341172][ T8390] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 75.341188][ T8390] ? tomoyo_path_number_perm+0x441/0x590 [ 75.341207][ T8390] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 75.341223][ T8390] ? tomoyo_path_number_perm+0x24e/0x590 [ 75.341239][ T8390] ? kasan_quarantine_put+0xf5/0x210 [ 75.341255][ T8390] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 75.341274][ T8390] ? __sanitizer_cov_trace_switch+0x63/0xf0 [ 75.341289][ T8390] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 75.341305][ T8390] ? do_vfs_ioctl+0x27d/0x1090 [ 75.341319][ T8390] ? generic_block_fiemap+0x60/0x60 [ 75.341333][ T8390] fb_compat_ioctl+0x17e/0x610 [ 75.341348][ T8390] ? fb_open+0x430/0x430 [ 75.341363][ T8390] ? __context_tracking_exit+0xb8/0xe0 [ 75.341377][ T8390] ? lock_downgrade+0x6e0/0x6e0 [ 75.341392][ T8390] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 75.341408][ T8390] ? fb_open+0x430/0x430 [ 75.341423][ T8390] __do_compat_sys_ioctl+0x1d3/0x230 [ 75.341437][ T8390] __do_fast_syscall_32+0x56/0x90 [ 75.341454][ T8390] do_fast_syscall_32+0x2f/0x70 [ 75.341481][ T8390] entry_SYSENTER_compat_after_hwframe+0x4d/0x5c [ 75.341499][ T8390] RIP: 0023:0xf7f1a549 [ 75.341509][ T8390] Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 [ 75.341522][ T8390] RSP: 002b:00000000ffaa68ec EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 75.341535][ T8390] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000004610 [ 75.341544][ T8390] RDX: 0000000020000080 RSI: 00000000ffaa6940 RDI: 00000000080e3000 [ 75.341553][ T8390] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 75.341561][ T8390] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 75.341568][ T8390] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 75.341579][ T8390] Modules linked in: [ 75.341586][ T8390] CR2: 0000000000000000 [ 75.341595][ T8390] ---[ end trace 9970c73c813380be ]--- [ 75.341601][ T8390] RIP: 0010:0x0 [ 75.341610][ T8390] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 75.341616][ T8390] RSP: 0018:ffffc90001abf760 EFLAGS: 00010296 [ 75.341626][ T8390] RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007 [ 75.341634][ T8390] RDX: 0000000000000002 RSI: ffff888018ffc000 RDI: ffff888010479000 [ 75.341643][ T8390] RBP: ffff888010479000 R08: 0000000000000000 R09: ffffffff83f6450a [ 75.341651][ T8390] R10: 0000000000000003 R11: 0000000000000018 R12: ffff888018ffc000 [ 75.341660][ T8390] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000720 [ 75.341668][ T8390] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:0000000008ac92c0 [ 75.341682][ T8390] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 75.341691][ T8390] CR2: ffffffffffffffd6 CR3: 0000000027093000 CR4: 00000000001506e0 [ 75.341700][ T8390] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.341708][ T8390] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.341717][ T8390] Kernel panic - not syncing: Fatal exception [ 75.342506][ T8390] Kernel Offset: disabled [ 75.899337][ T8390] Rebooting in 86400 seconds..