[ 77.670122][ T27] audit: type=1800 audit(1578466126.199:24): pid=9529 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="sudo" dev="sda1" ino=2454 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 78.612045][ T27] audit: type=1800 audit(1578466127.199:25): pid=9529 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 78.631767][ T27] audit: type=1800 audit(1578466127.199:26): pid=9529 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 89.487235][ T9683] kasan: CONFIG_KASAN_INLINE enabled [ 89.492701][ T9683] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 89.500856][ T9683] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 89.507797][ T9683] CPU: 0 PID: 9683 Comm: syz-executor632 Not tainted 5.5.0-rc5-syzkaller #0 [ 89.516555][ T9683] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.526842][ T9683] RIP: 0010:hash_net4_uadt+0x200/0x940 [ 89.535147][ T9683] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 92 06 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 57 [ 89.555815][ T9683] RSP: 0018:ffffc90001e47190 EFLAGS: 00010246 [ 89.561867][ T9683] RAX: dffffc0000000000 RBX: ffffc90001e47320 RCX: 0000000000000000 [ 89.569821][ T9683] RDX: 0000000000000000 RSI: ffffffff867fea1d RDI: ffff888095fda448 [ 89.577784][ T9683] RBP: ffffc90001e472b8 R08: 0000000000000000 R09: 0000000000000000 [ 89.585906][ T9683] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 89.593857][ T9683] R13: 0000000009000000 R14: ffff8880a8a3c400 R15: 0000000000000002 [ 89.601806][ T9683] FS: 0000000000b94880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 89.610714][ T9683] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.617272][ T9683] CR2: 0000000020000446 CR3: 000000008fa1d000 CR4: 00000000001406f0 [ 89.625235][ T9683] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.633194][ T9683] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.641139][ T9683] Call Trace: [ 89.644424][ T9683] ? hash_net_create+0xa60/0xa60 [ 89.649348][ T9683] ? hash_net6_uadt+0x880/0x880 [ 89.654182][ T9683] ? nla_memcpy+0xb0/0xb0 [ 89.658493][ T9683] ? ip_set_utest+0x4aa/0x890 [ 89.663148][ T9683] ? __kasan_check_read+0x11/0x20 [ 89.668161][ T9683] ip_set_utest+0x55b/0x890 [ 89.672653][ T9683] ? ip_set_put_byindex+0x490/0x490 [ 89.677830][ T9683] ? __mutex_lock+0x458/0x13c0 [ 89.682576][ T9683] ? ip_set_put_byindex+0x490/0x490 [ 89.687752][ T9683] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 89.692669][ T9683] ? nfnetlink_bind+0x2c0/0x2c0 [ 89.697510][ T9683] ? __kasan_check_read+0x11/0x20 [ 89.702514][ T9683] ? __lock_acquire+0x8a0/0x4a00 [ 89.707443][ T9683] ? save_stack+0x5c/0x90 [ 89.711769][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.717999][ T9683] ? apparmor_capable+0x497/0x900 [ 89.723025][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.729341][ T9683] ? __kasan_check_read+0x11/0x20 [ 89.734378][ T9683] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 89.739827][ T9683] netlink_rcv_skb+0x177/0x450 [ 89.744594][ T9683] ? nfnetlink_bind+0x2c0/0x2c0 [ 89.749429][ T9683] ? netlink_ack+0xb50/0xb50 [ 89.754016][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.760252][ T9683] ? ns_capable_common+0x93/0x100 [ 89.765478][ T9683] ? ns_capable+0x20/0x30 [ 89.769806][ T9683] ? __netlink_ns_capable+0x104/0x140 [ 89.775189][ T9683] nfnetlink_rcv+0x1ba/0x460 [ 89.779769][ T9683] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 89.785234][ T9683] ? netlink_deliver_tap+0x24a/0xbe0 [ 89.790530][ T9683] ? __kasan_check_write+0x14/0x20 [ 89.795629][ T9683] netlink_unicast+0x58c/0x7d0 [ 89.800391][ T9683] ? netlink_attachskb+0x870/0x870 [ 89.805482][ T9683] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 89.811199][ T9683] ? __check_object_size+0x3d/0x437 [ 89.816373][ T9683] netlink_sendmsg+0x91c/0xea0 [ 89.821122][ T9683] ? netlink_unicast+0x7d0/0x7d0 [ 89.826034][ T9683] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 89.831557][ T9683] ? apparmor_socket_sendmsg+0x2a/0x30 [ 89.837012][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.843347][ T9683] ? security_socket_sendmsg+0x8d/0xc0 [ 89.848809][ T9683] ? netlink_unicast+0x7d0/0x7d0 [ 89.853738][ T9683] sock_sendmsg+0xd7/0x130 [ 89.858147][ T9683] ____sys_sendmsg+0x753/0x880 [ 89.862900][ T9683] ? kernel_sendmsg+0x50/0x50 [ 89.867555][ T9683] ? lockdep_init_map+0x1be/0x6d0 [ 89.872574][ T9683] ___sys_sendmsg+0x100/0x170 [ 89.877232][ T9683] ? sendmsg_copy_msghdr+0x70/0x70 [ 89.882334][ T9683] ? __kasan_check_read+0x11/0x20 [ 89.887342][ T9683] ? __lock_acquire+0x8a0/0x4a00 [ 89.892257][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.898535][ T9683] ? __this_cpu_preempt_check+0x35/0x190 [ 89.904172][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.910395][ T9683] ? percpu_counter_add_batch+0x13c/0x190 [ 89.916092][ T9683] ? __fd_install+0x1bc/0x640 [ 89.920752][ T9683] ? find_held_lock+0x35/0x130 [ 89.925516][ T9683] ? __fd_install+0x1bc/0x640 [ 89.930181][ T9683] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.936396][ T9683] ? __fget_light+0x1a9/0x230 [ 89.941128][ T9683] ? __fdget+0x1b/0x20 [ 89.945198][ T9683] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 89.951425][ T9683] __sys_sendmsg+0x105/0x1d0 [ 89.955993][ T9683] ? __sys_sendmsg_sock+0xc0/0xc0 [ 89.961000][ T9683] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 89.966438][ T9683] ? do_syscall_64+0x26/0x790 [ 89.971095][ T9683] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.977178][ T9683] ? do_syscall_64+0x26/0x790 [ 89.981846][ T9683] __x64_sys_sendmsg+0x78/0xb0 [ 89.987456][ T9683] do_syscall_64+0xfa/0x790 [ 89.992117][ T9683] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.997997][ T9683] RIP: 0033:0x4406e9 [ 90.001870][ T9683] 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 [ 90.021460][ T9683] RSP: 002b:00007ffd32dda068 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 90.029849][ T9683] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004406e9 [ 90.037799][ T9683] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 [ 90.045749][ T9683] RBP: 00000000006ca018 R08: 0000000000000048 R09: 00000000004002c8 [ 90.053698][ T9683] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401f70 [ 90.061834][ T9683] R13: 0000000000402000 R14: 0000000000000000 R15: 0000000000000000 [ 90.069784][ T9683] Modules linked in: [ 90.073721][ T9683] ---[ end trace 5300f9d4ed2b5e49 ]--- [ 90.079214][ T9683] RIP: 0010:hash_net4_uadt+0x200/0x940 [ 90.084651][ T9683] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 92 06 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 57 [ 90.104996][ T9683] RSP: 0018:ffffc90001e47190 EFLAGS: 00010246 [ 90.111123][ T9683] RAX: dffffc0000000000 RBX: ffffc90001e47320 RCX: 0000000000000000 [ 90.119310][ T9683] RDX: 0000000000000000 RSI: ffffffff867fea1d RDI: ffff888095fda448 [ 90.127279][ T9683] RBP: ffffc90001e472b8 R08: 0000000000000000 R09: 0000000000000000 [ 90.135265][ T9683] R10: ffffed1015d0703c R11: ffff8880ae8381e3 R12: 0000000000000000 [ 90.143245][ T9683] R13: 0000000009000000 R14: ffff8880a8a3c400 R15: 0000000000000002 [ 90.151290][ T9683] FS: 0000000000b94880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 90.160234][ T9683] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.166794][ T9683] CR2: 0000000020000446 CR3: 000000008fa1d000 CR4: 00000000001406f0 [ 90.174774][ T9683] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.182760][ T9683] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.190739][ T9683] Kernel panic - not syncing: Fatal exception in interrupt [ 90.199723][ T9683] Kernel Offset: disabled [ 90.204133][ T9683] Rebooting in 86400 seconds..