[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.215' (ECDSA) to the list of known hosts. 2021/05/02 08:31:16 fuzzer started 2021/05/02 08:31:16 dialing manager at 10.128.0.169:44661 2021/05/02 08:31:16 syscalls: 3571 2021/05/02 08:31:16 code coverage: enabled 2021/05/02 08:31:16 comparison tracing: enabled 2021/05/02 08:31:16 extra coverage: enabled 2021/05/02 08:31:16 setuid sandbox: enabled 2021/05/02 08:31:16 namespace sandbox: enabled 2021/05/02 08:31:16 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/02 08:31:16 fault injection: enabled 2021/05/02 08:31:16 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/02 08:31:16 net packet injection: enabled 2021/05/02 08:31:16 net device setup: enabled 2021/05/02 08:31:16 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/02 08:31:16 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/02 08:31:16 USB emulation: enabled 2021/05/02 08:31:16 hci packet injection: enabled 2021/05/02 08:31:16 wifi device emulation: enabled 2021/05/02 08:31:16 802.15.4 emulation: enabled 2021/05/02 08:31:16 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/02 08:31:17 fetching corpus: 50, signal 51398/55122 (executing program) 2021/05/02 08:31:17 Manager.Poll call failed: reading body read tcp 10.128.0.215:60902->10.128.0.169:44661: read: bad address syzkaller login: [ 70.621217][ T8459] general protection fault, probably for non-canonical address 0xdffffc00401895c1: 0000 [#1] PREEMPT SMP KASAN [ 70.634064][ T8459] KASAN: probably user-memory-access in range [0x0000000200c4ae08-0x0000000200c4ae0f] [ 70.644345][ T8459] CPU: 1 PID: 8459 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 70.656528][ T8459] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.667652][ T8459] RIP: 0010:skb_release_data+0x3a0/0x750 [ 70.674233][ T8459] Code: 48 8b 04 24 48 c1 e8 03 42 80 3c 30 00 0f 85 d3 02 00 00 49 63 c4 48 c1 e0 04 4a 8b 6c 28 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 a7 02 00 00 48 8b 45 08 31 ff 48 89 c3 48 89 [ 70.698207][ T8459] RSP: 0018:ffffc9000183fbb0 EFLAGS: 00010202 [ 70.705999][ T8459] RAX: 00000000401895c1 RBX: 0000000000000011 RCX: 0000000000000000 [ 70.716057][ T8459] RDX: ffff888023e01c80 RSI: ffffffff8703c746 RDI: 0000000200c4ae08 [ 70.727626][ T8459] RBP: 0000000200c4ae00 R08: 0000000000000011 R09: 0000000000c4ae00 [ 70.738761][ T8459] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 70.747783][ T8459] R13: ffff888033d4fecc R14: dffffc0000000000 R15: ffff88801db1c640 [ 70.758732][ T8459] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 70.768153][ T8459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.775532][ T8459] CR2: 00007f9d76c4f458 CR3: 000000000bc8e000 CR4: 00000000001506e0 [ 70.784398][ T8459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.793100][ T8459] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.803703][ T8459] Call Trace: [ 70.807449][ T8459] __kfree_skb+0x46/0x60 [ 70.812641][ T8459] __tcp_close+0x230/0x1170 [ 70.817709][ T8459] tcp_close+0x29/0xc0 [ 70.822267][ T8459] inet_release+0x12e/0x280 [ 70.827177][ T8459] __sock_release+0xcd/0x280 [ 70.832348][ T8459] sock_close+0x18/0x20 [ 70.836698][ T8459] __fput+0x288/0x920 [ 70.841284][ T8459] ? __sock_release+0x280/0x280 [ 70.846697][ T8459] task_work_run+0xdd/0x1a0 [ 70.851949][ T8459] do_exit+0xbfc/0x2a70 [ 70.856808][ T8459] ? io_schedule_timeout+0x140/0x140 [ 70.864376][ T8459] ? lockdep_hardirqs_on+0x79/0x100 [ 70.872715][ T8459] ? mm_update_next_owner+0x7a0/0x7a0 [ 70.879439][ T8459] ? preempt_schedule_thunk+0x16/0x18 [ 70.886605][ T8459] ? preempt_schedule_common+0x59/0xc0 [ 70.892354][ T8459] ? preempt_schedule_thunk+0x16/0x18 [ 70.898456][ T8459] ? trace_hardirqs_on+0x38/0x1c0 [ 70.904059][ T8459] do_group_exit+0x125/0x310 [ 70.909669][ T8459] __x64_sys_exit_group+0x3a/0x50 [ 70.915686][ T8459] do_syscall_64+0x3a/0xb0 [ 70.920847][ T8459] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 70.927526][ T8459] RIP: 0033:0x46d96b [ 70.933003][ T8459] Code: Unable to access opcode bytes at RIP 0x46d941. [ 70.941629][ T8459] RSP: 002b:000000c00030f880 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 70.951470][ T8459] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046d96b [ 70.960010][ T8459] RDX: 000000000000007e RSI: 0000000000000000 RDI: 0000000000000001 [ 70.969700][ T8459] RBP: 000000c00030f890 R08: 0000000000000004 R09: fffff80000000001 [ 70.979910][ T8459] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 70.989724][ T8459] R13: 0000000000000040 R14: 0000000000000007 R15: 0000000000000040 [ 71.000211][ T8459] Modules linked in: [ 71.006182][ T8459] ---[ end trace c41663963b73f1d8 ]--- [ 71.012160][ T8459] RIP: 0010:skb_release_data+0x3a0/0x750 [ 71.018536][ T8459] Code: 48 8b 04 24 48 c1 e8 03 42 80 3c 30 00 0f 85 d3 02 00 00 49 63 c4 48 c1 e0 04 4a 8b 6c 28 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 a7 02 00 00 48 8b 45 08 31 ff 48 89 c3 48 89 [ 71.040168][ T8459] RSP: 0018:ffffc9000183fbb0 EFLAGS: 00010202 [ 71.047101][ T8459] RAX: 00000000401895c1 RBX: 0000000000000011 RCX: 0000000000000000 [ 71.056043][ T8459] RDX: ffff888023e01c80 RSI: ffffffff8703c746 RDI: 0000000200c4ae08 [ 71.065343][ T8459] RBP: 0000000200c4ae00 R08: 0000000000000011 R09: 0000000000c4ae00 [ 71.075170][ T8459] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 71.084146][ T8459] R13: ffff888033d4fecc R14: dffffc0000000000 R15: ffff88801db1c640 [ 71.093837][ T8459] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 71.106069][ T8459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.113665][ T8459] CR2: 00007f9d76c4f458 CR3: 000000000bc8e000 CR4: 00000000001506e0 [ 71.124956][ T8459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.135281][ T8459] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.145378][ T8459] Kernel panic - not syncing: Fatal exception [ 71.153871][ T8459] Kernel Offset: disabled [ 71.158808][ T8459] Rebooting in 86400 seconds..