Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 87.481918][ T9656] general protection fault, probably for non-canonical address 0xdffffc0020000001: 0000 [#1] PREEMPT SMP KASAN [ 87.481929][ T9656] KASAN: probably user-memory-access in range [0x0000000100000008-0x000000010000000f] [ 87.481943][ T9656] CPU: 1 PID: 9656 Comm: syz-executor157 Not tainted 5.6.0-rc1-next-20200211-syzkaller #0 [ 87.481952][ T9656] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.481971][ T9656] RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 [ 87.481984][ T9656] Code: 7e fe ff ff 45 01 ef e8 0d f2 80 fd 48 8b 85 c8 fe ff ff 80 38 00 0f 85 71 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 87.481991][ T9656] RSP: 0018:ffffc90002117828 EFLAGS: 00010203 [ 87.482002][ T9656] RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83f4b080 [ 87.482009][ T9656] RDX: 0000000000000000 RSI: ffffffff83f4b0d3 RDI: 0000000000000003 [ 87.482017][ T9656] RBP: ffffc900021179b8 R08: ffff888096b34440 R09: ffff888096b34cd8 [ 87.482024][ T9656] R10: fffffbfff154b718 R11: ffffffff8aa5b8c7 R12: dffffc0000000000 [ 87.482031][ T9656] R13: 0000000000000000 R14: ffff8880a6e95000 R15: 0000000000000764 [ 87.482041][ T9656] FS: 0000000001c1e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 87.482049][ T9656] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.482057][ T9656] CR2: 0000000020001440 CR3: 00000000a39a7000 CR4: 00000000001406e0 [ 87.482069][ T9656] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.482077][ T9656] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.482081][ T9656] Call Trace: [ 87.482118][ T9656] ? do_con_trol+0x61b0/0x61b0 [ 87.482135][ T9656] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 87.482148][ T9656] ? add_wait_queue+0x112/0x170 [ 87.482159][ T9656] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 87.482178][ T9656] ? trace_hardirqs_on+0x67/0x240 [ 87.482197][ T9656] con_write+0x46/0xd0 [ 87.482214][ T9656] n_tty_write+0x40e/0x1080 [ 87.482239][ T9656] ? n_tty_read+0x1bf0/0x1bf0 [ 87.482253][ T9656] ? prepare_to_wait_exclusive+0x320/0x320 [ 87.482273][ T9656] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 87.482288][ T9656] ? _copy_from_user+0x12c/0x1a0 [ 87.482309][ T9656] tty_write+0x496/0x7f0 [ 87.482325][ T9656] ? n_tty_read+0x1bf0/0x1bf0 [ 87.482345][ T9656] do_iter_write+0x4a0/0x610 [ 87.482359][ T9656] ? dup_iter+0x260/0x260 [ 87.482381][ T9656] vfs_writev+0x1b3/0x2f0 [ 87.482398][ T9656] ? vfs_iter_write+0xb0/0xb0 [ 87.482424][ T9656] ? lock_downgrade+0x920/0x920 [ 87.482441][ T9656] ? handle_mm_fault+0x292/0xa50 [ 87.482461][ T9656] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 87.482475][ T9656] ? __fget_light+0x1ad/0x270 [ 87.482492][ T9656] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 87.482507][ T9656] do_writev+0x15b/0x330 [ 87.482523][ T9656] ? vfs_writev+0x2f0/0x2f0 [ 87.482541][ T9656] ? do_syscall_64+0x26/0x790 [ 87.482555][ T9656] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.482569][ T9656] ? do_syscall_64+0x26/0x790 [ 87.482585][ T9656] __x64_sys_writev+0x75/0xb0 [ 87.482601][ T9656] do_syscall_64+0xfa/0x790 [ 87.482619][ T9656] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.482628][ T9656] RIP: 0033:0x4419a9 [ 87.482642][ T9656] Code: e8 7c e7 ff ff 48 83 c4 18 c3 0f 1f 80 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 0f 83 bb 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 87.482649][ T9656] RSP: 002b:00007ffeb0ccaf88 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 87.482662][ T9656] RAX: ffffffffffffffda RBX: 00007ffeb0ccb130 RCX: 00000000004419a9 [ 87.482669][ T9656] RDX: 0000000000000001 RSI: 0000000020001440 RDI: 0000000000000003 [ 87.482676][ T9656] RBP: 0000000000000000 R08: 000000000000000e R09: 0000000000000000 [ 87.482683][ T9656] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.482690][ T9656] R13: 0000000000402680 R14: 0000000000000000 R15: 0000000000000000 [ 87.482705][ T9656] Modules linked in: [ 87.484343][ T9656] ---[ end trace f839463a7c1a8578 ]--- [ 87.484364][ T9656] RIP: 0010:do_con_write.part.0+0xa01/0x1ef0 [ 87.484377][ T9656] Code: 7e fe ff ff 45 01 ef e8 0d f2 80 fd 48 8b 85 c8 fe ff ff 80 38 00 0f 85 71 12 00 00 49 8b 9e a0 03 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 14 20 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 87.484385][ T9656] RSP: 0018:ffffc90002117828 EFLAGS: 00010203 [ 87.484396][ T9656] RAX: 0000000020000001 RBX: 000000010000000e RCX: ffffffff83f4b080 [ 87.484404][ T9656] RDX: 0000000000000000 RSI: ffffffff83f4b0d3 RDI: 0000000000000003 [ 87.484412][ T9656] RBP: ffffc900021179b8 R08: ffff888096b34440 R09: ffff888096b34cd8 [ 87.484421][ T9656] R10: fffffbfff154b718 R11: ffffffff8aa5b8c7 R12: dffffc0000000000 [ 87.484429][ T9656] R13: 0000000000000000 R14: ffff8880a6e95000 R15: 0000000000000764 [ 87.484440][ T9656] FS: 0000000001c1e880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 87.484449][ T9656] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 87.484457][ T9656] CR2: 0000000020001440 CR3: 00000000a39a7000 CR4: 00000000001406e0 [ 87.484469][ T9656] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 87.484477][ T9656] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 87.484483][ T9656] Kernel panic - not syncing: Fatal exception [ 87.485730][ T9656] Kernel Offset: disabled