[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 86.937431][ T27] audit: type=1800 audit(1578471289.979:25): pid=9359 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 86.957106][ T27] audit: type=1800 audit(1578471289.979:26): pid=9359 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 87.001637][ T27] audit: type=1800 audit(1578471289.979:27): pid=9359 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 '10.128.1.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 97.028387][ T9513] kasan: CONFIG_KASAN_INLINE enabled [ 97.033794][ T9513] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 97.042082][ T9513] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 97.049022][ T9513] CPU: 0 PID: 9513 Comm: syz-executor858 Not tainted 5.5.0-rc5-syzkaller #0 [ 97.057667][ T9513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.067732][ T9513] RIP: 0010:hash_ip4_uadt+0x1f5/0x7a0 [ 97.073118][ T9513] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 10 05 00 00 48 89 da 45 8b 7f 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec [ 97.092703][ T9513] RSP: 0018:ffffc90001f07180 EFLAGS: 00010246 [ 97.098746][ T9513] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 97.106851][ T9513] RDX: 0000000000000000 RSI: ffffffff86790b92 RDI: ffff88809da5f8f4 [ 97.114804][ T9513] RBP: ffffc90001f072a8 R08: 0000000000000000 R09: 0000000000000000 [ 97.122753][ T9513] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffff8880a478aa00 [ 97.130707][ T9513] R13: ffffc90001f07310 R14: 0000000000000002 R15: 000000009b000000 [ 97.138658][ T9513] FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000093cd840 [ 97.147560][ T9513] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 97.154121][ T9513] CR2: 0000000020000446 CR3: 00000000a79e2000 CR4: 00000000001406f0 [ 97.162074][ T9513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.170023][ T9513] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.177975][ T9513] Call Trace: [ 97.181255][ T9513] ? hash_ip6_test+0x670/0x670 [ 97.186053][ T9513] ? hash_ip6_uadt+0x670/0x670 [ 97.190807][ T9513] ? nla_memcpy+0xb0/0xb0 [ 97.195118][ T9513] ? ip_set_utest+0x4aa/0x890 [ 97.199785][ T9513] ? __kasan_check_read+0x11/0x20 [ 97.204797][ T9513] ip_set_utest+0x55b/0x890 [ 97.209278][ T9513] ? ip_set_put_byindex+0x490/0x490 [ 97.214457][ T9513] ? __mutex_lock+0x458/0x13c0 [ 97.219249][ T9513] ? ip_set_put_byindex+0x490/0x490 [ 97.224425][ T9513] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 97.229354][ T9513] ? nfnetlink_bind+0x2c0/0x2c0 [ 97.234232][ T9513] ? __kasan_check_read+0x11/0x20 [ 97.239242][ T9513] ? __lock_acquire+0x8a0/0x4a00 [ 97.244687][ T9513] ? save_stack+0x5c/0x90 [ 97.249029][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.255245][ T9513] ? apparmor_capable+0x497/0x900 [ 97.260245][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.266566][ T9513] ? __kasan_check_read+0x11/0x20 [ 97.271585][ T9513] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 97.277035][ T9513] netlink_rcv_skb+0x177/0x450 [ 97.281776][ T9513] ? nfnetlink_bind+0x2c0/0x2c0 [ 97.286622][ T9513] ? netlink_ack+0xb50/0xb50 [ 97.291196][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.297455][ T9513] ? ns_capable_common+0x93/0x100 [ 97.302459][ T9513] ? ns_capable+0x20/0x30 [ 97.306819][ T9513] ? __netlink_ns_capable+0x104/0x140 [ 97.312170][ T9513] nfnetlink_rcv+0x1ba/0x460 [ 97.316755][ T9513] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 97.322334][ T9513] ? netlink_deliver_tap+0x24a/0xbe0 [ 97.327657][ T9513] ? __kasan_check_write+0x14/0x20 [ 97.332752][ T9513] netlink_unicast+0x58c/0x7d0 [ 97.337498][ T9513] ? netlink_attachskb+0x870/0x870 [ 97.342604][ T9513] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 97.348315][ T9513] ? __check_object_size+0x3d/0x437 [ 97.353494][ T9513] netlink_sendmsg+0x91c/0xea0 [ 97.358276][ T9513] ? netlink_unicast+0x7d0/0x7d0 [ 97.363190][ T9513] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 97.368720][ T9513] ? apparmor_socket_sendmsg+0x2a/0x30 [ 97.374167][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.380387][ T9513] ? security_socket_sendmsg+0x8d/0xc0 [ 97.385832][ T9513] ? netlink_unicast+0x7d0/0x7d0 [ 97.390746][ T9513] sock_sendmsg+0xd7/0x130 [ 97.395140][ T9513] ____sys_sendmsg+0x753/0x880 [ 97.399881][ T9513] ? kernel_sendmsg+0x50/0x50 [ 97.404534][ T9513] ? lockdep_init_map+0x1be/0x6d0 [ 97.409541][ T9513] ___sys_sendmsg+0x100/0x170 [ 97.414214][ T9513] ? sendmsg_copy_msghdr+0x70/0x70 [ 97.419305][ T9513] ? __kasan_check_read+0x11/0x20 [ 97.424362][ T9513] ? __lock_acquire+0x8a0/0x4a00 [ 97.429292][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.435601][ T9513] ? __this_cpu_preempt_check+0x35/0x190 [ 97.441210][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.447460][ T9513] ? percpu_counter_add_batch+0x13c/0x190 [ 97.453158][ T9513] ? __fd_install+0x1bc/0x640 [ 97.457809][ T9513] ? find_held_lock+0x35/0x130 [ 97.462550][ T9513] ? __fd_install+0x1bc/0x640 [ 97.467208][ T9513] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 97.473421][ T9513] ? __fget_light+0x1a9/0x230 [ 97.478119][ T9513] ? __fdget+0x1b/0x20 [ 97.482166][ T9513] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 97.488383][ T9513] __sys_sendmsg+0x105/0x1d0 [ 97.492952][ T9513] ? __sys_sendmsg_sock+0xc0/0xc0 [ 97.497956][ T9513] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 97.503390][ T9513] ? do_fast_syscall_32+0xd1/0xe16 [ 97.508488][ T9513] ? entry_SYSENTER_compat+0x70/0x7f [ 97.513747][ T9513] ? do_fast_syscall_32+0xd1/0xe16 [ 97.518835][ T9513] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 97.524281][ T9513] do_fast_syscall_32+0x27b/0xe16 [ 97.529280][ T9513] entry_SYSENTER_compat+0x70/0x7f [ 97.534377][ T9513] RIP: 0023:0xf7f77a39 [ 97.538431][ T9513] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 97.558009][ T9513] RSP: 002b:00000000ffbdc72c EFLAGS: 00000202 ORIG_RAX: 0000000000000172 [ 97.566408][ T9513] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000500 [ 97.574354][ T9513] RDX: 0000000000000000 RSI: 00000000080eb080 RDI: 00000000ffbdc780 [ 97.582298][ T9513] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 97.590255][ T9513] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 97.598210][ T9513] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 97.606157][ T9513] Modules linked in: [ 97.610095][ T9513] ---[ end trace 35a3f9e970525570 ]--- [ 97.615664][ T9513] RIP: 0010:hash_ip4_uadt+0x1f5/0x7a0 [ 97.621016][ T9513] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 10 05 00 00 48 89 da 45 8b 7f 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ec [ 97.640644][ T9513] RSP: 0018:ffffc90001f07180 EFLAGS: 00010246 [ 97.646721][ T9513] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 97.654698][ T9513] RDX: 0000000000000000 RSI: ffffffff86790b92 RDI: ffff88809da5f8f4 [ 97.662724][ T9513] RBP: ffffc90001f072a8 R08: 0000000000000000 R09: 0000000000000000 [ 97.670672][ T9513] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: ffff8880a478aa00 [ 97.678646][ T9513] R13: ffffc90001f07310 R14: 0000000000000002 R15: 000000009b000000 [ 97.686620][ T9513] FS: 0000000000000000(0000) GS:ffff8880ae800000(0063) knlGS:00000000093cd840 [ 97.695551][ T9513] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 97.702137][ T9513] CR2: 0000000020000446 CR3: 00000000a79e2000 CR4: 00000000001406f0 [ 97.710087][ T9513] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.718060][ T9513] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.726133][ T9513] Kernel panic - not syncing: Fatal exception in interrupt [ 97.734700][ T9513] Kernel Offset: disabled [ 97.739031][ T9513] Rebooting in 86400 seconds..