Warning: Permanently added '10.128.0.134' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 51.866280] kauditd_printk_skb: 5 callbacks suppressed [ 51.866296] audit: type=1400 audit(1555173384.554:36): avc: denied { map } for pid=7895 comm="syz-executor364" path="/root/syz-executor364925729" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 51.873182] netlink: 'syz-executor364': attribute type 3 has an invalid length. [ 51.898975] audit: type=1400 audit(1555173384.554:37): avc: denied { create } for pid=7895 comm="syz-executor364" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 51.906624] netlink: 'syz-executor364': attribute type 2 has an invalid length. [ 51.930826] audit: type=1400 audit(1555173384.554:38): avc: denied { write } for pid=7895 comm="syz-executor364" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 51.937946] kasan: CONFIG_KASAN_INLINE enabled [ 51.966672] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.974308] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 51.980536] CPU: 1 PID: 7895 Comm: syz-executor364 Not tainted 4.19.34 #2 [ 51.987448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.996817] RIP: 0010:tcp_timeout_obj_to_nlattr+0x7b/0x650 [ 52.002420] Code: f1 f1 f1 f1 c7 40 04 04 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 90 24 d5 fb 48 8d 7b 04 48 89 f8 48 c1 e8 03 <42> 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 52.021315] RSP: 0018:ffff88808028f3d0 EFLAGS: 00010247 [ 52.026660] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8599425b [ 52.033919] RDX: 0000000000000000 RSI: ffffffff859612b0 RDI: 0000000000000004 [ 52.041170] RBP: ffff88808028f460 R08: ffff8880850b0140 R09: ffff88809c37c0a8 [ 52.048451] R10: ffffed101386f814 R11: ffff88809c37c0a0 R12: ffff8880a58a3200 [ 52.055699] R13: ffff88808028f438 R14: dffffc0000000000 R15: 1ffff11010051e7b [ 52.062966] FS: 0000000000be6880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 52.071182] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.077062] CR2: 0000000020000000 CR3: 0000000099f1f000 CR4: 00000000001406e0 [ 52.084312] Call Trace: [ 52.086881] ? memcpy+0x46/0x50 [ 52.090144] ? tcp_timeout_nlattr_to_obj+0x9f0/0x9f0 [ 52.095268] ? __nla_put+0x37/0x40 [ 52.098797] ? nla_put+0x116/0x150 [ 52.102322] cttimeout_default_get+0x69a/0xa80 [ 52.106903] ? cttimeout_del_timeout+0x1a0/0x1a0 [ 52.111650] ? __lock_is_held+0x76/0x140 [ 52.115723] ? cttimeout_del_timeout+0x1a0/0x1a0 [ 52.120460] nfnetlink_rcv_msg+0xd12/0xfe0 [ 52.124704] ? nfnetlink_bind+0x2d0/0x2d0 [ 52.128836] ? avc_has_extended_perms+0x10f0/0x10f0 [ 52.133837] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.139350] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.144886] ? cred_has_capability+0x193/0x320 [ 52.149450] ? selinux_ipv4_output+0x50/0x50 [ 52.153839] ? sock_sendmsg+0xdd/0x130 [ 52.157710] ? mark_held_locks+0x100/0x100 [ 52.161933] netlink_rcv_skb+0x180/0x460 [ 52.165978] ? nfnetlink_bind+0x2d0/0x2d0 [ 52.170107] ? netlink_ack+0xb60/0xb60 [ 52.173989] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.179506] ? ns_capable+0x23/0x30 [ 52.183113] ? __netlink_ns_capable+0x104/0x140 [ 52.187762] nfnetlink_rcv+0x1c0/0x460 [ 52.191636] ? nfnetlink_rcv_batch+0x1770/0x1770 [ 52.196382] ? netlink_deliver_tap+0x254/0xc20 [ 52.200951] ? kasan_check_write+0x14/0x20 [ 52.205170] netlink_unicast+0x53c/0x720 [ 52.209211] ? netlink_attachskb+0x770/0x770 [ 52.213602] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.219130] netlink_sendmsg+0x8ae/0xd70 [ 52.223173] ? netlink_unicast+0x720/0x720 [ 52.227406] ? selinux_socket_sendmsg+0x36/0x40 [ 52.232059] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.237575] ? security_socket_sendmsg+0x93/0xc0 [ 52.242311] ? netlink_unicast+0x720/0x720 [ 52.246521] sock_sendmsg+0xdd/0x130 [ 52.250220] ___sys_sendmsg+0x806/0x930 [ 52.254211] ? copy_msghdr_from_user+0x430/0x430 [ 52.258954] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.264476] ? __handle_mm_fault+0x7d3/0x3f80 [ 52.268951] ? vmf_insert_mixed_mkwrite+0x90/0x90 [ 52.273794] ? find_held_lock+0x35/0x130 [ 52.277838] ? __do_page_fault+0x676/0xe90 [ 52.282072] ? find_held_lock+0x35/0x130 [ 52.286130] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.291656] ? __fget_light+0x1a9/0x230 [ 52.295626] ? __fdget+0x1b/0x20 [ 52.298971] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.304499] __sys_sendmsg+0x105/0x1d0 [ 52.308368] ? __ia32_sys_shutdown+0x80/0x80 [ 52.312761] ? up_read+0x1a/0x110 [ 52.316205] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 52.320943] ? do_syscall_64+0x26/0x610 [ 52.324905] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.330248] ? do_syscall_64+0x26/0x610 [ 52.334205] __x64_sys_sendmsg+0x78/0xb0 [ 52.338248] do_syscall_64+0x103/0x610 [ 52.342119] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.347316] RIP: 0033:0x4401e9 [ 52.350483] 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 [ 52.369359] RSP: 002b:00007ffc579de818 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 52.377182] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401e9 [ 52.384429] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 52.391693] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 52.398980] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a70 [ 52.406233] R13: 0000000000401b00 R14: 0000000000000000 R15: 0000000000000000 [ 52.413483] Modules linked in: [ 52.417635] ---[ end trace f15cc003973a1216 ]--- [ 52.422435] RIP: 0010:tcp_timeout_obj_to_nlattr+0x7b/0x650 [ 52.428041] Code: f1 f1 f1 f1 c7 40 04 04 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 90 24 d5 fb 48 8d 7b 04 48 89 f8 48 c1 e8 03 <42> 0f b6 14 30 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 [ 52.446994] RSP: 0018:ffff88808028f3d0 EFLAGS: 00010247 [ 52.452419] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8599425b [ 52.459677] RDX: 0000000000000000 RSI: ffffffff859612b0 RDI: 0000000000000004 [ 52.466971] RBP: ffff88808028f460 R08: ffff8880850b0140 R09: ffff88809c37c0a8 [ 52.474259] R10: ffffed101386f814 R11: ffff88809c37c0a0 R12: ffff8880a58a3200 [ 52.481514] R13: ffff88808028f438 R14: dffffc0000000000 R15: 1ffff11010051e7b [ 52.488803] FS: 0000000000be6880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 52.497060] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.502955] CR2: ffffffffff600400 CR3: 0000000099f1f000 CR4: 00000000001406e0 [ 52.510224] Kernel panic - not syncing: Fatal exception [ 52.516240] Kernel Offset: disabled [ 52.519857] Rebooting in 86400 seconds..