[ 43.747773] audit: type=1800 audit(1554928188.423:31): pid=7702 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 49.807368] kauditd_printk_skb: 3 callbacks suppressed [ 49.807384] audit: type=1400 audit(1554928194.543:35): avc: denied { map } for pid=7877 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.118' (ECDSA) to the list of known hosts. executing program [ 59.033936] audit: type=1400 audit(1554928203.773:36): avc: denied { map } for pid=7889 comm="syz-executor306" path="/root/syz-executor306478708" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 59.039605] netlink: 'syz-executor306': attribute type 3 has an invalid length. [ 59.061016] audit: type=1400 audit(1554928203.773:37): avc: denied { create } for pid=7889 comm="syz-executor306" 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 [ 59.068480] netlink: 'syz-executor306': attribute type 2 has an invalid length. [ 59.092729] audit: type=1400 audit(1554928203.773:38): avc: denied { write } for pid=7889 comm="syz-executor306" 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 [ 59.099919] kasan: CONFIG_KASAN_INLINE enabled [ 59.128708] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 59.136077] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 59.142294] CPU: 0 PID: 7889 Comm: syz-executor306 Not tainted 4.19.34 #2 [ 59.149224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.158578] RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x120 [ 59.164273] Code: b5 41 c7 00 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 80 83 d4 fb 4c 89 e0 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 74 [ 59.183167] RSP: 0018:ffff888093d273d8 EFLAGS: 00010246 [ 59.188521] RAX: 0000000000000000 RBX: 1ffff110127a4e7b RCX: ffffffff8599425b [ 59.195805] RDX: 0000000000000000 RSI: ffffffff8596b3c0 RDI: ffff88808feb4ac0 [ 59.203568] RBP: ffff888093d27460 R08: ffff888097086100 R09: ffff888096fcc828 [ 59.210826] R10: ffffed1012df9904 R11: ffff888096fcc820 R12: 0000000000000000 [ 59.218080] R13: ffff888093d27438 R14: ffff88808feb4ac0 R15: dffffc0000000000 [ 59.225337] FS: 000000000070e880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 59.233549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.239513] CR2: 0000000020000280 CR3: 00000000a5f9f000 CR4: 00000000001406f0 [ 59.246766] Call Trace: [ 59.249342] ? icmp_timeout_nlattr_to_obj+0x180/0x180 [ 59.254518] ? __nla_put+0x37/0x40 [ 59.258040] ? nla_put+0x116/0x150 [ 59.261570] cttimeout_default_get+0x69a/0xa80 [ 59.266145] ? cttimeout_del_timeout+0x1a0/0x1a0 [ 59.270891] ? __lock_is_held+0x71/0x140 [ 59.274969] ? cttimeout_del_timeout+0x1a0/0x1a0 [ 59.279715] nfnetlink_rcv_msg+0xd12/0xfe0 [ 59.283941] ? nfnetlink_bind+0x2d0/0x2d0 [ 59.288076] ? avc_has_extended_perms+0x10f0/0x10f0 [ 59.293090] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.298615] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.304138] ? cred_has_capability+0x193/0x320 [ 59.308705] ? selinux_ipv4_output+0x50/0x50 [ 59.313099] ? sock_sendmsg+0xdd/0x130 [ 59.316973] ? mark_held_locks+0x100/0x100 [ 59.321196] netlink_rcv_skb+0x180/0x460 [ 59.325246] ? nfnetlink_bind+0x2d0/0x2d0 [ 59.329384] ? netlink_ack+0xb60/0xb60 [ 59.333256] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.338780] ? ns_capable+0x23/0x30 [ 59.342396] ? __netlink_ns_capable+0x104/0x140 [ 59.347065] nfnetlink_rcv+0x1c0/0x460 [ 59.350942] ? nfnetlink_rcv_batch+0x1770/0x1770 [ 59.355699] ? netlink_deliver_tap+0x254/0xc20 [ 59.360280] ? kasan_check_write+0x14/0x20 [ 59.364504] netlink_unicast+0x53c/0x720 [ 59.368550] ? netlink_attachskb+0x770/0x770 [ 59.372945] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.378480] netlink_sendmsg+0x8ae/0xd70 [ 59.382542] ? netlink_unicast+0x720/0x720 [ 59.386766] ? selinux_socket_sendmsg+0x36/0x40 [ 59.391421] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.396950] ? security_socket_sendmsg+0x93/0xc0 [ 59.401707] ? netlink_unicast+0x720/0x720 [ 59.405942] sock_sendmsg+0xdd/0x130 [ 59.409638] ___sys_sendmsg+0x806/0x930 [ 59.413597] ? copy_msghdr_from_user+0x430/0x430 [ 59.418347] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.423884] ? __handle_mm_fault+0x7d3/0x3f80 [ 59.428365] ? vmf_insert_mixed_mkwrite+0x90/0x90 [ 59.433191] ? find_held_lock+0x35/0x130 [ 59.437248] ? __do_page_fault+0x676/0xe90 [ 59.441479] ? find_held_lock+0x35/0x130 [ 59.445527] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 59.451058] ? __fget_light+0x1a9/0x230 [ 59.455019] ? __fdget+0x1b/0x20 [ 59.458371] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 59.463895] __sys_sendmsg+0x105/0x1d0 [ 59.467772] ? __ia32_sys_shutdown+0x80/0x80 [ 59.472163] ? up_read+0x1a/0x110 [ 59.475606] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 59.480459] ? do_syscall_64+0x26/0x610 [ 59.484418] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.489764] ? do_syscall_64+0x26/0x610 [ 59.493728] __x64_sys_sendmsg+0x78/0xb0 [ 59.497780] do_syscall_64+0x103/0x610 [ 59.501653] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 59.506828] RIP: 0033:0x4401e9 [ 59.510005] 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 [ 59.528894] RSP: 002b:00007ffcad173118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 59.536592] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401e9 [ 59.543849] RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000003 [ 59.551119] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 59.558373] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a70 [ 59.565630] R13: 0000000000401b00 R14: 0000000000000000 R15: 0000000000000000 [ 59.572999] Modules linked in: [ 59.576500] ---[ end trace 9bcf58594e267ea9 ]--- [ 59.581380] RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x120 [ 59.587081] Code: b5 41 c7 00 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 80 83 d4 fb 4c 89 e0 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 74 [ 59.606221] RSP: 0018:ffff888093d273d8 EFLAGS: 00010246 [ 59.611666] RAX: 0000000000000000 RBX: 1ffff110127a4e7b RCX: ffffffff8599425b [ 59.618987] RDX: 0000000000000000 RSI: ffffffff8596b3c0 RDI: ffff88808feb4ac0 [ 59.626280] RBP: ffff888093d27460 R08: ffff888097086100 R09: ffff888096fcc828 [ 59.633651] R10: ffffed1012df9904 R11: ffff888096fcc820 R12: 0000000000000000 [ 59.640982] R13: ffff888093d27438 R14: ffff88808feb4ac0 R15: dffffc0000000000 [ 59.648308] FS: 000000000070e880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 59.656538] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 59.662477] CR2: ffffffffff600400 CR3: 00000000a5f9f000 CR4: 00000000001406f0 [ 59.669778] Kernel panic - not syncing: Fatal exception [ 59.675831] Kernel Offset: disabled [ 59.679460] Rebooting in 86400 seconds..