[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.740934][ T27] audit: type=1800 audit(1578457675.331:25): pid=9593 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.777310][ T27] audit: type=1800 audit(1578457675.331:26): pid=9593 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.807580][ T27] audit: type=1800 audit(1578457675.331:27): pid=9593 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 '10.128.0.157' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.093945][ T9746] kasan: CONFIG_KASAN_INLINE enabled [ 79.099477][ T9746] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.107800][ T9746] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 79.114744][ T9746] CPU: 1 PID: 9746 Comm: syz-executor955 Not tainted 5.5.0-rc5-syzkaller #0 [ 79.123395][ T9746] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.133439][ T9746] RIP: 0010:hash_net4_uadt+0x200/0x940 [ 79.138878][ T9746] 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 [ 79.159501][ T9746] RSP: 0018:ffffc90007b3f190 EFLAGS: 00010246 [ 79.165582][ T9746] RAX: dffffc0000000000 RBX: ffffc90007b3f320 RCX: 0000000000000000 [ 79.173529][ T9746] RDX: 0000000000000000 RSI: ffffffff867fea1d RDI: ffff88809f9a6048 [ 79.181474][ T9746] RBP: ffffc90007b3f2b8 R08: 0000000000000000 R09: 0000000000000000 [ 79.189419][ T9746] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 79.197365][ T9746] R13: 0000000009000000 R14: ffff8880a4831700 R15: 0000000000000002 [ 79.205313][ T9746] FS: 00000000011d1880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.214212][ T9746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.220767][ T9746] CR2: 0000000020000446 CR3: 00000000924a7000 CR4: 00000000001406e0 [ 79.228737][ T9746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.236705][ T9746] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.244651][ T9746] Call Trace: [ 79.247920][ T9746] ? hash_net_create+0xa60/0xa60 [ 79.252831][ T9746] ? hash_net6_uadt+0x880/0x880 [ 79.257669][ T9746] ? nla_memcpy+0xb0/0xb0 [ 79.261974][ T9746] ? ip_set_utest+0x4aa/0x890 [ 79.266634][ T9746] ? __kasan_check_read+0x11/0x20 [ 79.271641][ T9746] ip_set_utest+0x55b/0x890 [ 79.276125][ T9746] ? ip_set_put_byindex+0x490/0x490 [ 79.281309][ T9746] ? __mutex_lock+0x458/0x13c0 [ 79.286057][ T9746] ? ip_set_put_byindex+0x490/0x490 [ 79.291230][ T9746] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 79.296146][ T9746] ? nfnetlink_bind+0x2c0/0x2c0 [ 79.300973][ T9746] ? __kasan_check_read+0x11/0x20 [ 79.305984][ T9746] ? __lock_acquire+0x8a0/0x4a00 [ 79.310894][ T9746] ? save_stack+0x5c/0x90 [ 79.315201][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.321429][ T9746] ? apparmor_capable+0x497/0x900 [ 79.326430][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.332653][ T9746] ? __kasan_check_read+0x11/0x20 [ 79.337655][ T9746] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 79.343170][ T9746] netlink_rcv_skb+0x177/0x450 [ 79.347910][ T9746] ? nfnetlink_bind+0x2c0/0x2c0 [ 79.352737][ T9746] ? netlink_ack+0xb50/0xb50 [ 79.357302][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.363516][ T9746] ? ns_capable_common+0x93/0x100 [ 79.368526][ T9746] ? ns_capable+0x20/0x30 [ 79.372837][ T9746] ? __netlink_ns_capable+0x104/0x140 [ 79.378189][ T9746] nfnetlink_rcv+0x1ba/0x460 [ 79.382755][ T9746] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 79.388197][ T9746] ? netlink_deliver_tap+0x24a/0xbe0 [ 79.393457][ T9746] ? __kasan_check_write+0x14/0x20 [ 79.398546][ T9746] netlink_unicast+0x58c/0x7d0 [ 79.403298][ T9746] ? netlink_attachskb+0x870/0x870 [ 79.408387][ T9746] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 79.414080][ T9746] ? __check_object_size+0x3d/0x437 [ 79.419265][ T9746] netlink_sendmsg+0x91c/0xea0 [ 79.424004][ T9746] ? netlink_unicast+0x7d0/0x7d0 [ 79.428915][ T9746] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 79.434434][ T9746] ? apparmor_socket_sendmsg+0x2a/0x30 [ 79.439867][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.446081][ T9746] ? security_socket_sendmsg+0x8d/0xc0 [ 79.451516][ T9746] ? netlink_unicast+0x7d0/0x7d0 [ 79.456428][ T9746] sock_sendmsg+0xd7/0x130 [ 79.460892][ T9746] ____sys_sendmsg+0x753/0x880 [ 79.465664][ T9746] ? kernel_sendmsg+0x50/0x50 [ 79.470349][ T9746] ? lockdep_init_map+0x1be/0x6d0 [ 79.475398][ T9746] ___sys_sendmsg+0x100/0x170 [ 79.480083][ T9746] ? sendmsg_copy_msghdr+0x70/0x70 [ 79.485174][ T9746] ? __kasan_check_read+0x11/0x20 [ 79.490190][ T9746] ? __lock_acquire+0x8a0/0x4a00 [ 79.495118][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.501346][ T9746] ? __this_cpu_preempt_check+0x35/0x190 [ 79.506955][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.513171][ T9746] ? percpu_counter_add_batch+0x13c/0x190 [ 79.518867][ T9746] ? __fd_install+0x1bc/0x640 [ 79.523516][ T9746] ? find_held_lock+0x35/0x130 [ 79.528266][ T9746] ? __fd_install+0x1bc/0x640 [ 79.532921][ T9746] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.542577][ T9746] ? __fget_light+0x1a9/0x230 [ 79.547237][ T9746] ? __fdget+0x1b/0x20 [ 79.551344][ T9746] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.557576][ T9746] __sys_sendmsg+0x105/0x1d0 [ 79.562190][ T9746] ? __sys_sendmsg_sock+0xc0/0xc0 [ 79.567202][ T9746] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 79.572648][ T9746] ? do_syscall_64+0x26/0x790 [ 79.577312][ T9746] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.583398][ T9746] ? do_syscall_64+0x26/0x790 [ 79.588058][ T9746] __x64_sys_sendmsg+0x78/0xb0 [ 79.592799][ T9746] do_syscall_64+0xfa/0x790 [ 79.597282][ T9746] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.603149][ T9746] RIP: 0033:0x4406e9 [ 79.607020][ T9746] 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 [ 79.626637][ T9746] RSP: 002b:00007fffd7686728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.635048][ T9746] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004406e9 [ 79.642994][ T9746] RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 [ 79.650941][ T9746] RBP: 00000000006ca018 R08: 0000000000000048 R09: 00000000004002c8 [ 79.658893][ T9746] R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000401f70 [ 79.666841][ T9746] R13: 0000000000402000 R14: 0000000000000000 R15: 0000000000000000 [ 79.674805][ T9746] Modules linked in: [ 79.678728][ T9746] ---[ end trace c914c72a24732447 ]--- [ 79.684183][ T9746] RIP: 0010:hash_net4_uadt+0x200/0x940 [ 79.689655][ T9746] 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 [ 79.709271][ T9746] RSP: 0018:ffffc90007b3f190 EFLAGS: 00010246 [ 79.715327][ T9746] RAX: dffffc0000000000 RBX: ffffc90007b3f320 RCX: 0000000000000000 [ 79.723312][ T9746] RDX: 0000000000000000 RSI: ffffffff867fea1d RDI: ffff88809f9a6048 [ 79.731431][ T9746] RBP: ffffc90007b3f2b8 R08: 0000000000000000 R09: 0000000000000000 [ 79.739410][ T9746] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: 0000000000000000 [ 79.747384][ T9746] R13: 0000000009000000 R14: ffff8880a4831700 R15: 0000000000000002 [ 79.755348][ T9746] FS: 00000000011d1880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 79.764305][ T9746] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.770896][ T9746] CR2: 0000000020000446 CR3: 00000000924a7000 CR4: 00000000001406e0 [ 79.778915][ T9746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.786916][ T9746] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.794939][ T9746] Kernel panic - not syncing: Fatal exception in interrupt [ 79.803398][ T9746] Kernel Offset: disabled [ 79.807722][ T9746] Rebooting in 86400 seconds..