[ OK ] Started Daily Cleanup of Temporary Directories. [ OK ] Reached target Timers. Starting System Logging Service... Starting Permit User Sessions... Starting OpenBSD Secure Shell server... [ OK ] Started Regular background program processing daemon. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. Starting Load/Save RF Kill Switch Status... [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ 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 Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.65' (ECDSA) to the list of known hosts. 2021/05/03 21:27:29 fuzzer started 2021/05/03 21:27:30 dialing manager at 10.128.0.169:34381 2021/05/03 21:27:30 syscalls: 3586 2021/05/03 21:27:30 code coverage: enabled 2021/05/03 21:27:30 comparison tracing: enabled 2021/05/03 21:27:30 extra coverage: enabled 2021/05/03 21:27:30 setuid sandbox: enabled 2021/05/03 21:27:30 namespace sandbox: enabled 2021/05/03 21:27:30 Android sandbox: /sys/fs/selinux/policy does not exist 2021/05/03 21:27:30 fault injection: enabled 2021/05/03 21:27:30 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/03 21:27:30 net packet injection: enabled 2021/05/03 21:27:30 net device setup: enabled 2021/05/03 21:27:30 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2021/05/03 21:27:30 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/03 21:27:30 USB emulation: enabled 2021/05/03 21:27:30 hci packet injection: enabled 2021/05/03 21:27:30 wifi device emulation: enabled 2021/05/03 21:27:30 802.15.4 emulation: enabled 2021/05/03 21:27:30 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/03 21:27:30 Manager.Poll call failed: reading body read tcp 10.128.0.65:59628->10.128.0.169:34381: read: bad address syzkaller login: [ 74.602068][ T8467] general protection fault, probably for non-canonical address 0xdffffc00001643c1: 0000 [#1] PREEMPT SMP KASAN [ 74.613949][ T8467] KASAN: probably user-memory-access in range [0x0000000000b21e08-0x0000000000b21e0f] [ 74.623980][ T8467] CPU: 0 PID: 8467 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 [ 74.633625][ T8467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.643687][ T8467] RIP: 0010:skb_release_data+0x3a0/0x750 [ 74.649814][ T8467] 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 [ 74.670973][ T8467] RSP: 0018:ffffc90001597bb0 EFLAGS: 00010202 [ 74.677106][ T8467] RAX: 00000000001643c1 RBX: 0000000000000011 RCX: 0000000000000000 [ 74.685082][ T8467] RDX: ffff8880209a0000 RSI: ffffffff8703c746 RDI: 0000000000b21e08 [ 74.693055][ T8467] RBP: 0000000000b21e00 R08: 0000000000000011 R09: 0000000000b21e00 [ 74.701287][ T8467] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 74.710581][ T8467] R13: ffff888033f9fecc R14: dffffc0000000000 R15: ffff8880147b3000 [ 74.719379][ T8467] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 74.728503][ T8467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.736564][ T8467] CR2: 000055cf5aec8010 CR3: 0000000025c5b000 CR4: 00000000001506f0 [ 74.744544][ T8467] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.753122][ T8467] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.761272][ T8467] Call Trace: [ 74.764701][ T8467] __kfree_skb+0x46/0x60 [ 74.769626][ T8467] __tcp_close+0x230/0x1170 [ 74.774367][ T8467] tcp_close+0x29/0xc0 [ 74.778479][ T8467] inet_release+0x12e/0x280 [ 74.782993][ T8467] __sock_release+0xcd/0x280 [ 74.787588][ T8467] sock_close+0x18/0x20 [ 74.791812][ T8467] __fput+0x288/0x920 [ 74.795809][ T8467] ? __sock_release+0x280/0x280 [ 74.800675][ T8467] task_work_run+0xdd/0x1a0 [ 74.805210][ T8467] do_exit+0xbfc/0x2a70 [ 74.809382][ T8467] ? io_schedule_timeout+0x140/0x140 [ 74.814692][ T8467] ? lockdep_hardirqs_on+0x79/0x100 [ 74.820026][ T8467] ? mm_update_next_owner+0x7a0/0x7a0 [ 74.825489][ T8467] ? preempt_schedule_thunk+0x16/0x18 [ 74.831050][ T8467] ? preempt_schedule_common+0x59/0xc0 [ 74.836903][ T8467] ? preempt_schedule_thunk+0x16/0x18 [ 74.844017][ T8467] ? trace_hardirqs_on+0x38/0x1c0 [ 74.849083][ T8467] do_group_exit+0x125/0x310 [ 74.854250][ T8467] __x64_sys_exit_group+0x3a/0x50 [ 74.859631][ T8467] do_syscall_64+0x3a/0xb0 [ 74.864528][ T8467] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 74.870490][ T8467] RIP: 0033:0x46d96b [ 74.874513][ T8467] Code: Unable to access opcode bytes at RIP 0x46d941. [ 74.881372][ T8467] RSP: 002b:000000c00007b880 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 74.890311][ T8467] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000046d96b [ 74.898299][ T8467] RDX: 000000000000007d RSI: 0000000000000000 RDI: 0000000000000001 [ 74.906293][ T8467] RBP: 000000c00007b890 R08: 0000000000000004 R09: fffff80000000001 [ 74.914363][ T8467] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000003 [ 74.922413][ T8467] R13: 0000000000000040 R14: 0000000000947874 R15: 0000000000000030 [ 74.931769][ T8467] Modules linked in: [ 74.937871][ T8467] ---[ end trace 2441d91553731c79 ]--- [ 74.943461][ T8467] RIP: 0010:skb_release_data+0x3a0/0x750 [ 74.949374][ T8467] 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 [ 74.969697][ T8467] RSP: 0018:ffffc90001597bb0 EFLAGS: 00010202 [ 74.978704][ T8467] RAX: 00000000001643c1 RBX: 0000000000000011 RCX: 0000000000000000 [ 74.987646][ T8467] RDX: ffff8880209a0000 RSI: ffffffff8703c746 RDI: 0000000000b21e08 [ 74.997752][ T8467] RBP: 0000000000b21e00 R08: 0000000000000011 R09: 0000000000b21e00 [ 75.005757][ T8467] R10: ffffffff8703c733 R11: 0000000000000000 R12: 0000000000000010 [ 75.013859][ T8467] R13: ffff888033f9fecc R14: dffffc0000000000 R15: ffff8880147b3000 [ 75.022013][ T8467] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 75.031570][ T8467] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.038379][ T8467] CR2: 000055cf5aec8010 CR3: 0000000017e8f000 CR4: 00000000001506f0 [ 75.046395][ T8467] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.054800][ T8467] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.062986][ T8467] Kernel panic - not syncing: Fatal exception [ 75.069618][ T8467] Kernel Offset: disabled [ 75.073986][ T8467] Rebooting in 86400 seconds..