[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 71.173249][ T27] audit: type=1800 audit(1578438748.431:25): pid=9288 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 71.193113][ T27] audit: type=1800 audit(1578438748.431:26): pid=9288 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 71.238605][ T27] audit: type=1800 audit(1578438748.441:27): pid=9288 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 '10.128.0.85' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 84.643063][ T9442] kasan: CONFIG_KASAN_INLINE enabled [ 84.648467][ T9442] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 84.656568][ T9442] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 84.663501][ T9442] CPU: 0 PID: 9442 Comm: syz-executor719 Not tainted 5.5.0-rc4-syzkaller #0 [ 84.672158][ T9442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.682216][ T9442] RIP: 0010:hash_ipportnet4_uadt+0x20b/0x13e0 [ 84.688260][ T9442] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 71 0c 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 2c [ 84.707995][ T9442] RSP: 0018:ffffc90001db7150 EFLAGS: 00010246 [ 84.714061][ T9442] RAX: dffffc0000000000 RBX: ffffc90001db7320 RCX: 0000000000000000 [ 84.722023][ T9442] RDX: 0000000000000000 RSI: ffffffff867e4e78 RDI: ffff88809be240a0 [ 84.729978][ T9442] RBP: ffffc90001db72b8 R08: 0000000000000000 R09: 0000000000000000 [ 84.737938][ T9442] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 84.745886][ T9442] R13: 0000000004000000 R14: ffffc90001db7220 R15: ffff8880a5164e00 [ 84.753835][ T9442] FS: 00000000026a8880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 84.762739][ T9442] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.769300][ T9442] CR2: 00000000200000a4 CR3: 0000000093862000 CR4: 00000000001406f0 [ 84.783065][ T9442] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 84.791014][ T9442] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 84.798958][ T9442] Call Trace: [ 84.802239][ T9442] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 84.808108][ T9442] ? hash_ipportnet6_test+0x10c0/0x10c0 [ 84.813640][ T9442] ? hash_ipportnet6_uadt+0xeb0/0xeb0 [ 84.819000][ T9442] ? nla_memcpy+0xb0/0xb0 [ 84.823328][ T9442] ? ip_set_utest+0x4aa/0x890 [ 84.827980][ T9442] ? __kasan_check_read+0x11/0x20 [ 84.832987][ T9442] ip_set_utest+0x55b/0x890 [ 84.837523][ T9442] ? ip_set_put_byindex+0x490/0x490 [ 84.842715][ T9442] ? __mutex_lock+0x458/0x13c0 [ 84.847472][ T9442] ? ip_set_put_byindex+0x490/0x490 [ 84.852667][ T9442] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 84.857617][ T9442] ? nfnetlink_bind+0x2c0/0x2c0 [ 84.862455][ T9442] ? __kasan_check_read+0x11/0x20 [ 84.867483][ T9442] ? __lock_acquire+0x8a0/0x4a00 [ 84.872406][ T9442] ? save_stack+0x5c/0x90 [ 84.876766][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.883028][ T9442] ? apparmor_capable+0x497/0x900 [ 84.888028][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.894253][ T9442] ? __kasan_check_read+0x11/0x20 [ 84.899255][ T9442] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 84.904692][ T9442] netlink_rcv_skb+0x177/0x450 [ 84.909438][ T9442] ? nfnetlink_bind+0x2c0/0x2c0 [ 84.914277][ T9442] ? netlink_ack+0xb50/0xb50 [ 84.919056][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 84.925302][ T9442] ? ns_capable_common+0x93/0x100 [ 84.930309][ T9442] ? ns_capable+0x20/0x30 [ 84.934621][ T9442] ? __netlink_ns_capable+0x104/0x140 [ 84.939975][ T9442] nfnetlink_rcv+0x1ba/0x460 [ 84.944547][ T9442] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 84.950012][ T9442] ? netlink_deliver_tap+0x24a/0xbe0 [ 84.955271][ T9442] ? __kasan_check_write+0x14/0x20 [ 84.960360][ T9442] netlink_unicast+0x58c/0x7d0 [ 84.965120][ T9442] ? netlink_attachskb+0x870/0x870 [ 84.970225][ T9442] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 84.975922][ T9442] ? __check_object_size+0x3d/0x437 [ 84.981100][ T9442] netlink_sendmsg+0x91c/0xea0 [ 84.985860][ T9442] ? netlink_unicast+0x7d0/0x7d0 [ 84.990779][ T9442] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 84.996304][ T9442] ? apparmor_socket_sendmsg+0x2a/0x30 [ 85.001763][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.008027][ T9442] ? security_socket_sendmsg+0x8d/0xc0 [ 85.013472][ T9442] ? netlink_unicast+0x7d0/0x7d0 [ 85.018391][ T9442] sock_sendmsg+0xd7/0x130 [ 85.022790][ T9442] ____sys_sendmsg+0x753/0x880 [ 85.027529][ T9442] ? kernel_sendmsg+0x50/0x50 [ 85.032184][ T9442] ? lockdep_init_map+0x1be/0x6d0 [ 85.037186][ T9442] ___sys_sendmsg+0x100/0x170 [ 85.041838][ T9442] ? sendmsg_copy_msghdr+0x70/0x70 [ 85.046923][ T9442] ? __kasan_check_read+0x11/0x20 [ 85.051922][ T9442] ? __lock_acquire+0x8a0/0x4a00 [ 85.056881][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.063099][ T9442] ? __this_cpu_preempt_check+0x35/0x190 [ 85.068708][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.074923][ T9442] ? percpu_counter_add_batch+0x13c/0x190 [ 85.080629][ T9442] ? __fd_install+0x1bc/0x640 [ 85.085297][ T9442] ? find_held_lock+0x35/0x130 [ 85.090041][ T9442] ? __fd_install+0x1bc/0x640 [ 85.094695][ T9442] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 85.100924][ T9442] ? __fget_light+0x1a9/0x230 [ 85.105616][ T9442] ? __fdget+0x1b/0x20 [ 85.109671][ T9442] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 85.115901][ T9442] __sys_sendmsg+0x105/0x1d0 [ 85.120471][ T9442] ? __sys_sendmsg_sock+0xc0/0xc0 [ 85.125477][ T9442] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 85.130915][ T9442] ? do_syscall_64+0x26/0x790 [ 85.135571][ T9442] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.141806][ T9442] ? do_syscall_64+0x26/0x790 [ 85.146470][ T9442] __x64_sys_sendmsg+0x78/0xb0 [ 85.151217][ T9442] do_syscall_64+0xfa/0x790 [ 85.155698][ T9442] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.161566][ T9442] RIP: 0033:0x440859 [ 85.165437][ T9442] 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 [ 85.185022][ T9442] RSP: 002b:00007ffd761f25f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 85.193409][ T9442] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440859 [ 85.201357][ T9442] RDX: 000000000c0000c4 RSI: 0000000020000280 RDI: 0000000000000004 [ 85.209304][ T9442] RBP: 00000000006ca018 R08: 0000000000000005 R09: 00000000004002c8 [ 85.217252][ T9442] R10: 0000000000000007 R11: 0000000000000246 R12: 00000000004020e0 [ 85.225199][ T9442] R13: 0000000000402170 R14: 0000000000000000 R15: 0000000000000000 [ 85.233163][ T9442] Modules linked in: [ 85.237091][ T9442] ---[ end trace 4476d91d09d9c577 ]--- [ 85.242581][ T9442] RIP: 0010:hash_ipportnet4_uadt+0x20b/0x13e0 [ 85.248654][ T9442] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 71 0c 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 2c [ 85.268267][ T9442] RSP: 0018:ffffc90001db7150 EFLAGS: 00010246 [ 85.274353][ T9442] RAX: dffffc0000000000 RBX: ffffc90001db7320 RCX: 0000000000000000 [ 85.282336][ T9442] RDX: 0000000000000000 RSI: ffffffff867e4e78 RDI: ffff88809be240a0 [ 85.290326][ T9442] RBP: ffffc90001db72b8 R08: 0000000000000000 R09: 0000000000000000 [ 85.298300][ T9442] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 85.306306][ T9442] R13: 0000000004000000 R14: ffffc90001db7220 R15: ffff8880a5164e00 [ 85.314291][ T9442] FS: 00000000026a8880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 85.323233][ T9442] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.329838][ T9442] CR2: 00000000200000a4 CR3: 0000000093862000 CR4: 00000000001406f0 [ 85.337792][ T9442] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.345769][ T9442] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.353747][ T9442] Kernel panic - not syncing: Fatal exception in interrupt [ 85.362227][ T9442] Kernel Offset: disabled [ 85.366552][ T9442] Rebooting in 86400 seconds..