[ 101.757258][ T27] audit: type=1800 audit(1579976588.680:26): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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. [ 102.893699][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 102.893713][ T27] audit: type=1800 audit(1579976589.850:29): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 102.920914][ T27] audit: type=1800 audit(1579976589.850:30): pid=9644 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 113.121411][ T9800] kasan: CONFIG_KASAN_INLINE enabled [ 113.126804][ T9800] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 113.134925][ T9800] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 113.141865][ T9800] CPU: 0 PID: 9800 Comm: syz-executor125 Not tainted 5.5.0-rc7-syzkaller #0 [ 113.150524][ T9800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 113.160581][ T9800] RIP: 0010:strlen+0x1f/0xa0 [ 113.165159][ T9800] 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 [ 113.184750][ T9800] RSP: 0018:ffffc90001fa6e90 EFLAGS: 00010286 [ 113.190808][ T9800] RAX: dffffc0000000000 RBX: ffff88808f875f18 RCX: 1ffffffff14f6ffe [ 113.198989][ T9800] RDX: 0000000000000042 RSI: ffffffff8673d9a1 RDI: 0000000000000214 [ 113.206940][ T9800] RBP: ffffc90001fa6ea8 R08: ffff8880870de500 R09: ffffed1011f0ebe3 [ 113.214903][ T9800] R10: ffffed1011f0ebe2 R11: ffff88808f875f17 R12: 0000000000000214 [ 113.222980][ T9800] R13: 0000000000000204 R14: ffff8880a5508200 R15: ffff88808f875f00 [ 113.231109][ T9800] FS: 00000000014a2880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 113.240198][ T9800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.246771][ T9800] CR2: ffffffffff600400 CR3: 00000000a9778000 CR4: 00000000001406f0 [ 113.254736][ T9800] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.262697][ T9800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.270651][ T9800] Call Trace: [ 113.273935][ T9800] ip_set_comment_free+0x69/0xe0 [ 113.278936][ T9800] hash_net4_add+0x1b9a/0x2200 [ 113.283691][ T9800] ? write_comp_data+0x51/0x70 [ 113.288447][ T9800] hash_net4_uadt+0x596/0x940 [ 113.293121][ T9800] ? hash_net4_head+0x730/0x730 [ 113.297964][ T9800] ? hash_net6_uadt+0x880/0x880 [ 113.302812][ T9800] call_ad+0x1a0/0x5a0 [ 113.306878][ T9800] ? start_msg+0x220/0x220 [ 113.311273][ T9800] ? nla_memcpy+0xb0/0xb0 [ 113.315593][ T9800] ? __nla_parse+0x43/0x60 [ 113.319993][ T9800] ip_set_ad.isra.0+0x572/0xb20 [ 113.324844][ T9800] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 113.330475][ T9800] ? nla_memcpy+0xb0/0xb0 [ 113.334789][ T9800] ? lock_downgrade+0x920/0x920 [ 113.339644][ T9800] ip_set_uadd+0x37/0x50 [ 113.343876][ T9800] ? ip_set_udel+0x50/0x50 [ 113.348372][ T9800] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 113.353307][ T9800] ? nfnetlink_bind+0x2c0/0x2c0 [ 113.358146][ T9800] ? __kasan_check_read+0x11/0x20 [ 113.363171][ T9800] ? __lock_acquire+0x8a0/0x4a00 [ 113.368119][ T9800] ? save_stack+0x5c/0x90 [ 113.372453][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.378686][ T9800] ? apparmor_capable+0x497/0x900 [ 113.383705][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.389932][ T9800] ? __kasan_check_read+0x11/0x20 [ 113.394953][ T9800] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 113.400568][ T9800] netlink_rcv_skb+0x177/0x450 [ 113.405405][ T9800] ? nfnetlink_bind+0x2c0/0x2c0 [ 113.410329][ T9800] ? netlink_ack+0xb50/0xb50 [ 113.414916][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.421169][ T9800] ? ns_capable_common+0x93/0x100 [ 113.426184][ T9800] ? ns_capable+0x20/0x30 [ 113.430502][ T9800] ? __netlink_ns_capable+0x104/0x140 [ 113.435962][ T9800] nfnetlink_rcv+0x1ba/0x460 [ 113.440546][ T9800] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 113.445993][ T9800] ? netlink_deliver_tap+0x24a/0xbe0 [ 113.451269][ T9800] ? __kasan_check_write+0x14/0x20 [ 113.456373][ T9800] netlink_unicast+0x58c/0x7d0 [ 113.461184][ T9800] ? netlink_attachskb+0x870/0x870 [ 113.466293][ T9800] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 113.472114][ T9800] ? __check_object_size+0x3d/0x437 [ 113.477424][ T9800] netlink_sendmsg+0x91c/0xea0 [ 113.482185][ T9800] ? netlink_unicast+0x7d0/0x7d0 [ 113.487111][ T9800] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 113.492664][ T9800] ? apparmor_socket_sendmsg+0x2a/0x30 [ 113.498117][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.504369][ T9800] ? security_socket_sendmsg+0x8d/0xc0 [ 113.509820][ T9800] ? netlink_unicast+0x7d0/0x7d0 [ 113.514751][ T9800] sock_sendmsg+0xd7/0x130 [ 113.519219][ T9800] ____sys_sendmsg+0x753/0x880 [ 113.523996][ T9800] ? kernel_sendmsg+0x50/0x50 [ 113.528657][ T9800] ? lockdep_init_map+0x1be/0x6d0 [ 113.533681][ T9800] ___sys_sendmsg+0x100/0x170 [ 113.538356][ T9800] ? sendmsg_copy_msghdr+0x70/0x70 [ 113.543821][ T9800] ? __kasan_check_read+0x11/0x20 [ 113.548839][ T9800] ? __lock_acquire+0x8a0/0x4a00 [ 113.553768][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.560006][ T9800] ? __this_cpu_preempt_check+0x35/0x190 [ 113.565652][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.571887][ T9800] ? percpu_counter_add_batch+0x13c/0x190 [ 113.577595][ T9800] ? __fd_install+0x1bc/0x640 [ 113.582269][ T9800] ? find_held_lock+0x35/0x130 [ 113.587029][ T9800] ? __fd_install+0x1bc/0x640 [ 113.591722][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 113.597953][ T9800] ? __fget_light+0x1a9/0x230 [ 113.602624][ T9800] ? __fdget+0x1b/0x20 [ 113.606682][ T9800] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 113.612917][ T9800] __sys_sendmsg+0x105/0x1d0 [ 113.617602][ T9800] ? __sys_sendmsg_sock+0xc0/0xc0 [ 113.622627][ T9800] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 113.628079][ T9800] ? do_syscall_64+0x26/0x790 [ 113.632745][ T9800] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.638830][ T9800] ? do_syscall_64+0x26/0x790 [ 113.643500][ T9800] __x64_sys_sendmsg+0x78/0xb0 [ 113.648291][ T9800] do_syscall_64+0xfa/0x790 [ 113.652795][ T9800] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 113.658738][ T9800] RIP: 0033:0x440379 [ 113.662741][ T9800] 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 [ 113.682548][ T9800] RSP: 002b:00007ffcfb990398 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 113.690957][ T9800] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 113.698982][ T9800] RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004 [ 113.706944][ T9800] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 113.714925][ T9800] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c00 [ 113.722890][ T9800] R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000 [ 113.730864][ T9800] Modules linked in: [ 113.734824][ T9800] ---[ end trace a6760a9ec122842d ]--- [ 113.740318][ T9800] RIP: 0010:strlen+0x1f/0xa0 [ 113.745042][ T9800] 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 [ 113.765065][ T9800] RSP: 0018:ffffc90001fa6e90 EFLAGS: 00010286 [ 113.771281][ T9800] RAX: dffffc0000000000 RBX: ffff88808f875f18 RCX: 1ffffffff14f6ffe [ 113.780540][ T9800] RDX: 0000000000000042 RSI: ffffffff8673d9a1 RDI: 0000000000000214 [ 113.788540][ T9800] RBP: ffffc90001fa6ea8 R08: ffff8880870de500 R09: ffffed1011f0ebe3 [ 113.796525][ T9800] R10: ffffed1011f0ebe2 R11: ffff88808f875f17 R12: 0000000000000214 [ 113.804576][ T9800] R13: 0000000000000204 R14: ffff8880a5508200 R15: ffff88808f875f00 [ 113.812665][ T9800] FS: 00000000014a2880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 113.821771][ T9800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 113.828445][ T9800] CR2: ffffffffff600400 CR3: 00000000a9778000 CR4: 00000000001406f0 [ 113.836524][ T9800] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 113.844548][ T9800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 113.852695][ T9800] Kernel panic - not syncing: Fatal exception in interrupt [ 113.861281][ T9800] Kernel Offset: disabled [ 113.865614][ T9800] Rebooting in 86400 seconds..