[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.245474][ T27] audit: type=1800 audit(1578436965.858:25): pid=9368 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.265200][ T27] audit: type=1800 audit(1578436965.858:26): pid=9368 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.320066][ T27] audit: type=1800 audit(1578436965.858:27): pid=9368 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.291732][ T9522] kasan: CONFIG_KASAN_INLINE enabled [ 77.297247][ T9522] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 77.305295][ T9522] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 77.312297][ T9522] CPU: 0 PID: 9522 Comm: syz-executor303 Not tainted 5.5.0-rc4-syzkaller #0 [ 77.320950][ T9522] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.331094][ T9522] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 77.336914][ T9522] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4d 0a 00 00 4c 89 e2 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4c [ 77.356561][ T9522] RSP: 0018:ffffc90001db7160 EFLAGS: 00010246 [ 77.362624][ T9522] RAX: dffffc0000000000 RBX: ffffc90001db7320 RCX: 0000000000000000 [ 77.370576][ T9522] RDX: 0000000000000000 RSI: ffffffff86814225 RDI: ffff8880a0621030 [ 77.378528][ T9522] RBP: ffffc90001db72b8 R08: 0000000000000000 R09: 0000000000000000 [ 77.386480][ T9522] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 77.394426][ T9522] R13: 0000000004000000 R14: ffffc90001db7220 R15: 0000000000000002 [ 77.402388][ T9522] FS: 00000000021b5880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 77.411306][ T9522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.417879][ T9522] CR2: 0000000020000f86 CR3: 00000000a643e000 CR4: 00000000001406f0 [ 77.425833][ T9522] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.433789][ T9522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.441746][ T9522] Call Trace: [ 77.445019][ T9522] ? hash_netport6_test+0x1320/0x1320 [ 77.450377][ T9522] ? hash_netport6_kadt+0x740/0x740 [ 77.455553][ T9522] ? nla_memcpy+0xb0/0xb0 [ 77.459863][ T9522] ? ip_set_utest+0x4aa/0x890 [ 77.464517][ T9522] ? __kasan_check_read+0x11/0x20 [ 77.469529][ T9522] ip_set_utest+0x55b/0x890 [ 77.474025][ T9522] ? ip_set_put_byindex+0x490/0x490 [ 77.479212][ T9522] ? __mutex_lock+0x458/0x13c0 [ 77.483981][ T9522] ? ip_set_put_byindex+0x490/0x490 [ 77.489179][ T9522] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 77.494096][ T9522] ? nfnetlink_bind+0x2c0/0x2c0 [ 77.498940][ T9522] ? __kasan_check_read+0x11/0x20 [ 77.503949][ T9522] ? __lock_acquire+0x8a0/0x4a00 [ 77.508866][ T9522] ? save_stack+0x5c/0x90 [ 77.513177][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.519643][ T9522] ? apparmor_capable+0x497/0x900 [ 77.524649][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.530909][ T9522] ? __kasan_check_read+0x11/0x20 [ 77.535929][ T9522] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 77.541387][ T9522] netlink_rcv_skb+0x177/0x450 [ 77.546144][ T9522] ? nfnetlink_bind+0x2c0/0x2c0 [ 77.551070][ T9522] ? netlink_ack+0xb50/0xb50 [ 77.555655][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.561896][ T9522] ? ns_capable_common+0x93/0x100 [ 77.566938][ T9522] ? ns_capable+0x20/0x30 [ 77.571253][ T9522] ? __netlink_ns_capable+0x104/0x140 [ 77.576631][ T9522] nfnetlink_rcv+0x1ba/0x460 [ 77.581220][ T9522] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 77.586658][ T9522] ? netlink_deliver_tap+0x24a/0xbe0 [ 77.591935][ T9522] ? __kasan_check_write+0x14/0x20 [ 77.597046][ T9522] netlink_unicast+0x58c/0x7d0 [ 77.601815][ T9522] ? netlink_attachskb+0x870/0x870 [ 77.606915][ T9522] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 77.612631][ T9522] ? __check_object_size+0x3d/0x437 [ 77.617818][ T9522] netlink_sendmsg+0x91c/0xea0 [ 77.622725][ T9522] ? netlink_unicast+0x7d0/0x7d0 [ 77.627648][ T9522] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 77.633262][ T9522] ? apparmor_socket_sendmsg+0x2a/0x30 [ 77.638727][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.644956][ T9522] ? security_socket_sendmsg+0x8d/0xc0 [ 77.650407][ T9522] ? netlink_unicast+0x7d0/0x7d0 [ 77.655340][ T9522] sock_sendmsg+0xd7/0x130 [ 77.659814][ T9522] ____sys_sendmsg+0x753/0x880 [ 77.664597][ T9522] ? kernel_sendmsg+0x50/0x50 [ 77.669257][ T9522] ? lockdep_init_map+0x1be/0x6d0 [ 77.674275][ T9522] ___sys_sendmsg+0x100/0x170 [ 77.678945][ T9522] ? sendmsg_copy_msghdr+0x70/0x70 [ 77.684053][ T9522] ? __kasan_check_read+0x11/0x20 [ 77.689057][ T9522] ? __lock_acquire+0x8a0/0x4a00 [ 77.693974][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.700314][ T9522] ? __this_cpu_preempt_check+0x35/0x190 [ 77.706458][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.712697][ T9522] ? percpu_counter_add_batch+0x13c/0x190 [ 77.718413][ T9522] ? __fd_install+0x1bc/0x640 [ 77.723072][ T9522] ? find_held_lock+0x35/0x130 [ 77.727832][ T9522] ? __fd_install+0x1bc/0x640 [ 77.732585][ T9522] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 77.738819][ T9522] ? __fget_light+0x1a9/0x230 [ 77.743483][ T9522] ? __fdget+0x1b/0x20 [ 77.747545][ T9522] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 77.753770][ T9522] __sys_sendmsg+0x105/0x1d0 [ 77.758363][ T9522] ? __sys_sendmsg_sock+0xc0/0xc0 [ 77.763397][ T9522] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 77.768923][ T9522] ? do_syscall_64+0x26/0x790 [ 77.773586][ T9522] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.780529][ T9522] ? do_syscall_64+0x26/0x790 [ 77.785195][ T9522] __x64_sys_sendmsg+0x78/0xb0 [ 77.790220][ T9522] do_syscall_64+0xfa/0x790 [ 77.794907][ T9522] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.800784][ T9522] RIP: 0033:0x4405a9 [ 77.804835][ T9522] 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 [ 77.824514][ T9522] RSP: 002b:00007ffe5a64fe58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.832925][ T9522] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004405a9 [ 77.840888][ T9522] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 77.849030][ T9522] RBP: 00000000006ca018 R08: 0000000000000024 R09: 00000000004002c8 [ 77.857163][ T9522] R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000401e30 [ 77.865246][ T9522] R13: 0000000000401ec0 R14: 0000000000000000 R15: 0000000000000000 [ 77.873295][ T9522] Modules linked in: [ 77.877230][ T9522] ---[ end trace 40e6f4b22bc4db36 ]--- [ 77.882925][ T9522] RIP: 0010:hash_netport4_uadt+0x218/0xff0 [ 77.889900][ T9522] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4d 0a 00 00 4c 89 e2 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 4c [ 77.909523][ T9522] RSP: 0018:ffffc90001db7160 EFLAGS: 00010246 [ 77.915587][ T9522] RAX: dffffc0000000000 RBX: ffffc90001db7320 RCX: 0000000000000000 [ 77.924207][ T9522] RDX: 0000000000000000 RSI: ffffffff86814225 RDI: ffff8880a0621030 [ 77.932320][ T9522] RBP: ffffc90001db72b8 R08: 0000000000000000 R09: 0000000000000000 [ 77.940397][ T9522] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 77.948555][ T9522] R13: 0000000004000000 R14: ffffc90001db7220 R15: 0000000000000002 [ 77.956536][ T9522] FS: 00000000021b5880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 77.965552][ T9522] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.972149][ T9522] CR2: 0000000020000f86 CR3: 00000000a643e000 CR4: 00000000001406f0 [ 77.980138][ T9522] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.988502][ T9522] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.998155][ T9522] Kernel panic - not syncing: Fatal exception in interrupt [ 78.006894][ T9522] Kernel Offset: disabled [ 78.011608][ T9522] Rebooting in 86400 seconds..