Warning: Permanently added '10.128.0.87' (ECDSA) to the list of known hosts. executing program [ 111.792013][ T27] audit: type=1400 audit(1576022457.913:42): avc: denied { map } for pid=9962 comm="syz-executor770" path="/root/syz-executor770909924" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 111.798766][ T9962] BUG: kernel NULL pointer dereference, address: 0000000000000003 [ 111.826897][ T9962] #PF: supervisor write access in kernel mode [ 111.832979][ T9962] #PF: error_code(0x0002) - not-present page [ 111.839093][ T9962] PGD a22e1067 P4D a22e1067 PUD 818df067 PMD 0 [ 111.845324][ T9962] Oops: 0002 [#1] PREEMPT SMP KASAN [ 111.850781][ T9962] CPU: 1 PID: 9962 Comm: syz-executor770 Not tainted 5.5.0-rc1-syzkaller #0 [ 111.859717][ T9962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.869956][ T9962] RIP: 0010:mem_serial_out+0x70/0x90 [ 111.875559][ T9962] Code: e9 00 00 00 49 8d 7c 24 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 48 63 db 49 03 5c 24 40 <44> 88 2b 5b 41 5c 41 5d 5d c3 e8 61 45 cf fd eb c0 e8 ba 45 cf fd [ 111.896196][ T9962] RSP: 0018:ffffc90003357908 EFLAGS: 00010206 [ 111.902262][ T9962] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 111.910403][ T9962] RDX: 1ffffffff182080e RSI: ffffffff83e38076 RDI: ffffffff8c104070 [ 111.918367][ T9962] RBP: ffffc90003357920 R08: ffff8880a7eda3c0 R09: ffffed10144d41c6 [ 111.926314][ T9962] R10: ffffed10144d41c5 R11: ffff8880a26a0e2b R12: ffffffff8c104030 [ 111.934270][ T9962] R13: 00000000000000bf R14: ffffc90003357a40 R15: ffffffff8c104188 [ 111.942231][ T9962] FS: 00000000026aa880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 111.951233][ T9962] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 111.957791][ T9962] CR2: 0000000000000003 CR3: 000000009faf0000 CR4: 00000000001406e0 [ 111.965751][ T9962] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 111.973940][ T9962] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 111.981895][ T9962] Call Trace: [ 111.985180][ T9962] serial8250_do_startup+0x12b9/0x1cf0 [ 111.990629][ T9962] serial8250_startup+0x62/0x80 [ 111.995459][ T9962] uart_startup+0x452/0x980 [ 111.999940][ T9962] ? uart_proc_show+0x13f0/0x13f0 [ 112.004953][ T9962] ? serial8250_request_std_resource+0x159/0x3d0 [ 112.011255][ T9962] ? serial8250_probe+0x680/0x680 [ 112.016344][ T9962] ? serial8250_request_port+0x16/0x20 [ 112.021798][ T9962] uart_set_info_user+0x13b4/0x1cf0 [ 112.026990][ T9962] ? uart_port_activate+0x200/0x200 [ 112.032171][ T9962] tty_ioctl+0xf60/0x14f0 [ 112.036483][ T9962] ? tty_vhangup+0x30/0x30 [ 112.040887][ T9962] ? tomoyo_path_number_perm+0x454/0x520 [ 112.046612][ T9962] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 112.052841][ T9962] ? ___might_sleep+0x163/0x2c0 [ 112.057682][ T9962] ? tty_vhangup+0x30/0x30 [ 112.062085][ T9962] do_vfs_ioctl+0x977/0x14e0 [ 112.066654][ T9962] ? compat_ioctl_preallocate+0x220/0x220 [ 112.072358][ T9962] ? selinux_file_mprotect+0x620/0x620 [ 112.077810][ T9962] ? kmem_cache_free+0x26b/0x320 [ 112.082728][ T9962] ? do_sys_open+0x31d/0x5d0 [ 112.087301][ T9962] ? tomoyo_file_ioctl+0x23/0x30 [ 112.092216][ T9962] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 112.098430][ T9962] ? security_file_ioctl+0x8d/0xc0 [ 112.103534][ T9962] ksys_ioctl+0xab/0xd0 [ 112.107685][ T9962] __x64_sys_ioctl+0x73/0xb0 [ 112.112276][ T9962] do_syscall_64+0xfa/0x790 [ 112.116789][ T9962] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 112.122779][ T9962] RIP: 0033:0x440219 [ 112.126658][ T9962] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 112.146253][ T9962] RSP: 002b:00007ffeed853278 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 112.154682][ T9962] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 112.162638][ T9962] RDX: 0000000020000080 RSI: 000000000000541f RDI: 0000000000000003 [ 112.170593][ T9962] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 112.178762][ T9962] R10: 0000000000401b30 R11: 0000000000000246 R12: 0000000000401aa0 [ 112.186837][ T9962] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000 [ 112.194994][ T9962] Modules linked in: [ 112.198884][ T9962] CR2: 0000000000000003 [ 112.203870][ T9962] ---[ end trace 8879ab40d0075c1b ]--- [ 112.209561][ T9962] RIP: 0010:mem_serial_out+0x70/0x90 [ 112.214868][ T9962] Code: e9 00 00 00 49 8d 7c 24 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 48 63 db 49 03 5c 24 40 <44> 88 2b 5b 41 5c 41 5d 5d c3 e8 61 45 cf fd eb c0 e8 ba 45 cf fd [ 112.234812][ T9962] RSP: 0018:ffffc90003357908 EFLAGS: 00010206 [ 112.240888][ T9962] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 112.248874][ T9962] RDX: 1ffffffff182080e RSI: ffffffff83e38076 RDI: ffffffff8c104070 [ 112.256876][ T9962] RBP: ffffc90003357920 R08: ffff8880a7eda3c0 R09: ffffed10144d41c6 [ 112.264865][ T9962] R10: ffffed10144d41c5 R11: ffff8880a26a0e2b R12: ffffffff8c104030 [ 112.272851][ T9962] R13: 00000000000000bf R14: ffffc90003357a40 R15: ffffffff8c104188 [ 112.280871][ T9962] FS: 00000000026aa880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 112.289830][ T9962] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 112.296437][ T9962] CR2: 0000000000000003 CR3: 000000009faf0000 CR4: 00000000001406e0 [ 112.304408][ T9962] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 112.312412][ T9962] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 112.320407][ T9962] Kernel panic - not syncing: Fatal exception [ 112.327807][ T9962] Kernel Offset: disabled [ 112.332224][ T9962] Rebooting in 86400 seconds..