[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 87.487419][ T27] audit: type=1800 audit(1580269674.799:25): pid=9454 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 87.507941][ T27] audit: type=1800 audit(1580269674.799:26): pid=9454 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 87.561159][ T27] audit: type=1800 audit(1580269674.809:27): pid=9454 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 '10.128.0.114' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 98.700341][ T9607] kasan: CONFIG_KASAN_INLINE enabled [ 98.705759][ T9607] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 98.714037][ T9607] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 98.720968][ T9607] CPU: 1 PID: 9607 Comm: syz-executor745 Not tainted 5.5.0-syzkaller #0 [ 98.729309][ T9607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.739357][ T9607] RIP: 0010:strlen+0x1f/0xa0 [ 98.743934][ T9607] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 98.763546][ T9607] RSP: 0018:ffffc9000625ee90 EFLAGS: 00010286 [ 98.769590][ T9607] RAX: dffffc0000000000 RBX: ffff8880a71dcc18 RCX: 1ffffffff1503ff6 [ 98.777576][ T9607] RDX: 0000000000000022 RSI: ffffffff86732411 RDI: 0000000000000114 [ 98.785524][ T9607] RBP: ffffc9000625eea8 R08: ffff888094420200 R09: ffffed1014e3b983 [ 98.793473][ T9607] R10: ffffed1014e3b982 R11: ffff8880a71dcc17 R12: 0000000000000114 [ 98.801420][ T9607] R13: 0000000000000104 R14: ffff8880a6f6c200 R15: ffff8880a71dcc00 [ 98.809371][ T9607] FS: 0000000001a09880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 98.818282][ T9607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.824838][ T9607] CR2: 0000000020000046 CR3: 00000000a79d8000 CR4: 00000000001406e0 [ 98.832793][ T9607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.840745][ T9607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.848732][ T9607] Call Trace: [ 98.852002][ T9607] ip_set_comment_free+0x69/0xe0 [ 98.856918][ T9607] hash_net4_add+0x1b9a/0x2200 [ 98.861669][ T9607] ? __sanitizer_cov_trace_cmp4+0x1/0x20 [ 98.867280][ T9607] hash_net4_uadt+0x596/0x940 [ 98.871965][ T9607] ? hash_net4_head+0x730/0x730 [ 98.876795][ T9607] ? hash_net6_uadt+0x880/0x880 [ 98.881624][ T9607] call_ad+0x1a0/0x5a0 [ 98.885669][ T9607] ? start_msg+0x220/0x220 [ 98.890060][ T9607] ? nla_memcpy+0xb0/0xb0 [ 98.894366][ T9607] ? __nla_parse+0x43/0x60 [ 98.898757][ T9607] ip_set_ad.isra.0+0x572/0xb20 [ 98.903585][ T9607] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 98.909195][ T9607] ? nla_memcpy+0xb0/0xb0 [ 98.913500][ T9607] ? lock_downgrade+0x920/0x920 [ 98.918325][ T9607] ip_set_uadd+0x37/0x50 [ 98.922540][ T9607] ? ip_set_udel+0x50/0x50 [ 98.926928][ T9607] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 98.931839][ T9607] ? nfnetlink_bind+0x2c0/0x2c0 [ 98.936841][ T9607] ? __kasan_check_read+0x11/0x20 [ 98.941837][ T9607] ? __lock_acquire+0x8a0/0x4a00 [ 98.946748][ T9607] ? save_stack+0x5c/0x90 [ 98.951051][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.957264][ T9607] ? apparmor_capable+0x497/0x900 [ 98.962261][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.968474][ T9607] ? __kasan_check_read+0x11/0x20 [ 98.973471][ T9607] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 98.978920][ T9607] netlink_rcv_skb+0x177/0x450 [ 98.983658][ T9607] ? nfnetlink_bind+0x2c0/0x2c0 [ 98.988483][ T9607] ? netlink_ack+0xb50/0xb50 [ 98.993048][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.999347][ T9607] ? ns_capable_common+0x93/0x100 [ 99.004343][ T9607] ? ns_capable+0x20/0x30 [ 99.008647][ T9607] ? __netlink_ns_capable+0x104/0x140 [ 99.014003][ T9607] nfnetlink_rcv+0x1ba/0x460 [ 99.018578][ T9607] ? nfnetlink_rcv_batch+0x1790/0x1790 [ 99.024013][ T9607] ? netlink_deliver_tap+0x248/0xbe0 [ 99.029278][ T9607] ? __kasan_check_write+0x14/0x20 [ 99.034366][ T9607] netlink_unicast+0x58c/0x7d0 [ 99.039107][ T9607] ? netlink_attachskb+0x870/0x870 [ 99.045185][ T9607] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 99.050879][ T9607] ? __check_object_size+0x3d/0x437 [ 99.056056][ T9607] netlink_sendmsg+0x91c/0xea0 [ 99.060796][ T9607] ? netlink_unicast+0x7d0/0x7d0 [ 99.065741][ T9607] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 99.071262][ T9607] ? apparmor_socket_sendmsg+0x2a/0x30 [ 99.076738][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.082963][ T9607] ? security_socket_sendmsg+0x8d/0xc0 [ 99.088401][ T9607] ? netlink_unicast+0x7d0/0x7d0 [ 99.093318][ T9607] sock_sendmsg+0xd7/0x130 [ 99.097764][ T9607] ____sys_sendmsg+0x753/0x880 [ 99.102509][ T9607] ? kernel_sendmsg+0x50/0x50 [ 99.107165][ T9607] ? lockdep_init_map+0x1be/0x6d0 [ 99.112182][ T9607] ___sys_sendmsg+0x100/0x170 [ 99.116839][ T9607] ? sendmsg_copy_msghdr+0x70/0x70 [ 99.121975][ T9607] ? __kasan_check_read+0x11/0x20 [ 99.126975][ T9607] ? __lock_acquire+0x8a0/0x4a00 [ 99.131933][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.138149][ T9607] ? __this_cpu_preempt_check+0x35/0x190 [ 99.143759][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.149985][ T9607] ? percpu_counter_add_batch+0x13c/0x190 [ 99.155678][ T9607] ? __fd_install+0x1bc/0x640 [ 99.160327][ T9607] ? find_held_lock+0x35/0x130 [ 99.165069][ T9607] ? __fd_install+0x1bc/0x640 [ 99.169842][ T9607] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.176067][ T9607] ? __fget_light+0x1a9/0x230 [ 99.180721][ T9607] ? __fdget+0x1b/0x20 [ 99.184768][ T9607] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 99.190991][ T9607] __sys_sendmsg+0x105/0x1d0 [ 99.195560][ T9607] ? __sys_sendmsg_sock+0xc0/0xc0 [ 99.200613][ T9607] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 99.206048][ T9607] ? do_syscall_64+0x26/0x790 [ 99.210705][ T9607] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 99.216743][ T9607] ? do_syscall_64+0x26/0x790 [ 99.221396][ T9607] __x64_sys_sendmsg+0x78/0xb0 [ 99.226138][ T9607] do_syscall_64+0xfa/0x790 [ 99.230641][ T9607] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 99.236506][ T9607] RIP: 0033:0x4406b9 [ 99.240376][ T9607] Code: 23 02 00 85 c0 b8 00 00 00 00 48 0f 44 c3 5b c3 90 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 9b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 99.259951][ T9607] RSP: 002b:00007ffc205a1318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 99.268344][ T9607] RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00000000004406b9 [ 99.276303][ T9607] RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004 [ 99.284256][ T9607] RBP: 00000000006cb018 R08: 0000000000000008 R09: 6c616b7a79732f2e [ 99.292202][ T9607] R10: 000000000000000c R11: 0000000000000246 R12: 0000000000401ee0 [ 99.300146][ T9607] R13: 0000000000401f70 R14: 0000000000000000 R15: 0000000000000000 [ 99.308134][ T9607] Modules linked in: [ 99.312062][ T9607] ---[ end trace 17d4e836a42ad83a ]--- [ 99.317587][ T9607] RIP: 0010:strlen+0x1f/0xa0 [ 99.322203][ T9607] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 99.341954][ T9607] RSP: 0018:ffffc9000625ee90 EFLAGS: 00010286 [ 99.348032][ T9607] RAX: dffffc0000000000 RBX: ffff8880a71dcc18 RCX: 1ffffffff1503ff6 [ 99.356009][ T9607] RDX: 0000000000000022 RSI: ffffffff86732411 RDI: 0000000000000114 [ 99.363984][ T9607] RBP: ffffc9000625eea8 R08: ffff888094420200 R09: ffffed1014e3b983 [ 99.371930][ T9607] R10: ffffed1014e3b982 R11: ffff8880a71dcc17 R12: 0000000000000114 [ 99.379909][ T9607] R13: 0000000000000104 R14: ffff8880a6f6c200 R15: ffff8880a71dcc00 [ 99.387884][ T9607] FS: 0000000001a09880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 99.397134][ T9607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.403743][ T9607] CR2: 0000000020000046 CR3: 00000000a79d8000 CR4: 00000000001406e0 [ 99.411743][ T9607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 99.419740][ T9607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 99.427721][ T9607] Kernel panic - not syncing: Fatal exception in interrupt [ 99.436145][ T9607] Kernel Offset: disabled [ 99.440467][ T9607] Rebooting in 86400 seconds..