[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.610527][ T26] audit: type=1800 audit(1578421857.375:25): pid=9384 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.642605][ T26] audit: type=1800 audit(1578421857.375:26): pid=9384 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.664304][ T26] audit: type=1800 audit(1578421857.375:27): pid=9384 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 '10.128.0.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 80.323364][ T9536] kasan: CONFIG_KASAN_INLINE enabled [ 80.328800][ T9536] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 80.336918][ T9536] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 80.343853][ T9536] CPU: 1 PID: 9536 Comm: syz-executor915 Not tainted 5.5.0-rc4-syzkaller #0 [ 80.352598][ T9536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.362652][ T9536] RIP: 0010:hash_ip6_uadt+0x1f2/0x670 [ 80.368015][ T9536] Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 c2 03 00 00 4c 89 f2 8b 48 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 80 [ 80.387606][ T9536] RSP: 0018:ffffc90001d671b0 EFLAGS: 00010246 [ 80.393701][ T9536] RAX: dffffc0000000000 RBX: 1ffff920003ace3a RCX: 0000000002000000 [ 80.401668][ T9536] RDX: 0000000000000000 RSI: ffffffff8679350b RDI: ffff8880960cc0e0 [ 80.409626][ T9536] RBP: ffffc90001d672b8 R08: 0000000000000000 R09: 0000000000000000 [ 80.417578][ T9536] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffc90001d67320 [ 80.425539][ T9536] R13: ffff8880a7d0f300 R14: 0000000000000000 R15: ffffc90001d67200 [ 80.433670][ T9536] FS: 00000000026b9880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 80.442580][ T9536] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.449150][ T9536] CR2: 0000000020000058 CR3: 00000000923b2000 CR4: 00000000001406e0 [ 80.457101][ T9536] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.465094][ T9536] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 80.473073][ T9536] Call Trace: [ 80.476346][ T9536] ? hash_ip_create+0xc10/0xc10 [ 80.481183][ T9536] ? hash_ip6_kadt+0x650/0x650 [ 80.485933][ T9536] ? nla_memcpy+0xb0/0xb0 [ 80.490241][ T9536] ? lock_acquire+0x190/0x410 [ 80.494898][ T9536] ? __kasan_check_read+0x11/0x20 [ 80.499921][ T9536] ip_set_utest+0x55b/0x890 [ 80.504404][ T9536] ? ip_set_put_byindex+0x490/0x490 [ 80.509578][ T9536] ? __mutex_lock+0x458/0x13c0 [ 80.514326][ T9536] ? ip_set_put_byindex+0x490/0x490 [ 80.519500][ T9536] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 80.524422][ T9536] ? nfnetlink_bind+0x2c0/0x2c0 [ 80.529250][ T9536] ? __kasan_check_read+0x11/0x20 [ 80.534256][ T9536] ? __lock_acquire+0x8a0/0x4a00 [ 80.539177][ T9536] ? __kasan_check_read+0x11/0x20 [ 80.544181][ T9536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.550408][ T9536] ? apparmor_capable+0x497/0x900 [ 80.555407][ T9536] ? __kasan_check_read+0x11/0x20 [ 80.560418][ T9536] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 80.565863][ T9536] netlink_rcv_skb+0x177/0x450 [ 80.570604][ T9536] ? nfnetlink_bind+0x2c0/0x2c0 [ 80.575430][ T9536] ? netlink_ack+0xb50/0xb50 [ 80.580016][ T9536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.586268][ T9536] ? ns_capable_common+0x93/0x100 [ 80.591274][ T9536] ? ns_capable+0x20/0x30 [ 80.595586][ T9536] ? __netlink_ns_capable+0x104/0x140 [ 80.600939][ T9536] nfnetlink_rcv+0x1ba/0x460 [ 80.605509][ T9536] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 80.610943][ T9536] ? netlink_deliver_tap+0x24a/0xbe0 [ 80.616225][ T9536] ? __kasan_check_write+0x14/0x20 [ 80.621335][ T9536] netlink_unicast+0x58c/0x7d0 [ 80.626077][ T9536] ? netlink_attachskb+0x870/0x870 [ 80.631165][ T9536] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 80.636864][ T9536] netlink_sendmsg+0x91c/0xea0 [ 80.641625][ T9536] ? netlink_unicast+0x7d0/0x7d0 [ 80.646554][ T9536] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 80.652106][ T9536] ? apparmor_socket_sendmsg+0x2a/0x30 [ 80.657561][ T9536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.663783][ T9536] ? security_socket_sendmsg+0x8d/0xc0 [ 80.669235][ T9536] ? netlink_unicast+0x7d0/0x7d0 [ 80.674344][ T9536] sock_sendmsg+0xd7/0x130 [ 80.678745][ T9536] ____sys_sendmsg+0x753/0x880 [ 80.683491][ T9536] ? kernel_sendmsg+0x50/0x50 [ 80.688161][ T9536] ? lockdep_init_map+0x1be/0x6d0 [ 80.693180][ T9536] ___sys_sendmsg+0x100/0x170 [ 80.697840][ T9536] ? sendmsg_copy_msghdr+0x70/0x70 [ 80.702931][ T9536] ? __kasan_check_read+0x11/0x20 [ 80.707952][ T9536] ? __lock_acquire+0x8a0/0x4a00 [ 80.712870][ T9536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.719098][ T9536] ? __this_cpu_preempt_check+0x35/0x190 [ 80.724722][ T9536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.730935][ T9536] ? percpu_counter_add_batch+0x13c/0x190 [ 80.736632][ T9536] ? __fd_install+0x1bc/0x640 [ 80.741298][ T9536] ? find_held_lock+0x35/0x130 [ 80.746045][ T9536] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 80.752262][ T9536] ? __fget_light+0x1a9/0x230 [ 80.756926][ T9536] ? __fdget+0x1b/0x20 [ 80.760987][ T9536] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 80.767230][ T9536] __sys_sendmsg+0x105/0x1d0 [ 80.771834][ T9536] ? __sys_sendmsg_sock+0xc0/0xc0 [ 80.776841][ T9536] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 80.782274][ T9536] ? do_syscall_64+0x26/0x790 [ 80.786936][ T9536] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.792981][ T9536] ? do_syscall_64+0x26/0x790 [ 80.797724][ T9536] __x64_sys_sendmsg+0x78/0xb0 [ 80.802477][ T9536] do_syscall_64+0xfa/0x790 [ 80.806970][ T9536] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.812855][ T9536] RIP: 0033:0x4403a9 [ 80.816729][ T9536] 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 [ 80.836492][ T9536] RSP: 002b:00007ffdb86cbd68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 80.844895][ T9536] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403a9 [ 80.852856][ T9536] RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 80.860830][ T9536] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 80.869130][ T9536] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c30 [ 80.877178][ T9536] R13: 0000000000401cc0 R14: 0000000000000000 R15: 0000000000000000 [ 80.885144][ T9536] Modules linked in: [ 80.889083][ T9536] ---[ end trace 4a1bf267bd2df783 ]--- [ 80.894558][ T9536] RIP: 0010:hash_ip6_uadt+0x1f2/0x670 [ 80.899929][ T9536] Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 c2 03 00 00 4c 89 f2 8b 48 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 80 [ 80.919553][ T9536] RSP: 0018:ffffc90001d671b0 EFLAGS: 00010246 [ 80.925644][ T9536] RAX: dffffc0000000000 RBX: 1ffff920003ace3a RCX: 0000000002000000 [ 80.933624][ T9536] RDX: 0000000000000000 RSI: ffffffff8679350b RDI: ffff8880960cc0e0 [ 80.941600][ T9536] RBP: ffffc90001d672b8 R08: 0000000000000000 R09: 0000000000000000 [ 80.949590][ T9536] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffc90001d67320 [ 80.957580][ T9536] R13: ffff8880a7d0f300 R14: 0000000000000000 R15: ffffc90001d67200 [ 80.965573][ T9536] FS: 00000000026b9880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 80.974526][ T9536] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 80.981098][ T9536] CR2: 0000000020000058 CR3: 00000000923b2000 CR4: 00000000001406e0 [ 80.989079][ T9536] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 80.997062][ T9536] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.005042][ T9536] Kernel panic - not syncing: Fatal exception in interrupt [ 81.013671][ T9536] Kernel Offset: disabled [ 81.018012][ T9536] Rebooting in 86400 seconds..