[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 36.619004] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 39.309007] random: sshd: uninitialized urandom read (32 bytes read) [ 39.572440] random: sshd: uninitialized urandom read (32 bytes read) [ 40.444132] random: sshd: uninitialized urandom read (32 bytes read) [ 42.378442] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.27' (ECDSA) to the list of known hosts. [ 48.167585] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 48.298977] ------------[ cut here ]------------ [ 48.303838] AppArmor WARN apparmor_secid_to_secctx: ((!secdata)): [ 48.304010] WARNING: CPU: 0 PID: 4710 at security/apparmor/secid.c:82 apparmor_secid_to_secctx+0x38d/0x3c0 [ 48.320103] Kernel panic - not syncing: panic_on_warn set ... [ 48.320103] [ 48.327582] CPU: 0 PID: 4710 Comm: syz-executor585 Not tainted 4.19.0-rc1+ #37 [ 48.334935] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.344299] Call Trace: [ 48.346924] dump_stack+0x14b/0x190 [ 48.350563] panic+0x35d/0x8cb [ 48.353775] __warn+0x40a/0x590 [ 48.357060] ? apparmor_secid_to_secctx+0x38d/0x3c0 [ 48.362100] report_bug+0x65c/0x850 [ 48.365735] ? apparmor_secid_to_secctx+0x38d/0x3c0 [ 48.370769] ? apparmor_secid_to_secctx+0x38d/0x3c0 [ 48.375793] do_error_trap+0x1c0/0x620 [ 48.379728] ? vprintk_func+0x1ea/0x220 [ 48.383729] do_invalid_op+0x46/0x50 [ 48.387450] invalid_op+0x14/0x20 [ 48.390909] RIP: 0010:apparmor_secid_to_secctx+0x38d/0x3c0 [ 48.396546] Code: c7 83 68 09 00 00 00 00 00 00 48 c7 83 80 0c 00 00 00 00 00 00 48 c7 c7 4c aa 8f 89 48 c7 c6 6d aa 8f 89 31 c0 e8 f3 e6 45 fd <0f> 0b e9 38 fd ff ff 8b 7d c4 e8 a4 d2 e6 fd e9 9d fe ff ff 49 89 [ 48.415455] RSP: 0018:ffff8801b2efed80 EFLAGS: 00010286 [ 48.420825] RAX: 0000000000000036 RBX: ffff88019da00900 RCX: ffff88019da00000 [ 48.428094] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: 0000000000000000 [ 48.435367] RBP: ffff8801b2efedf0 R08: 0000000000480020 R09: 0000000000000002 [ 48.442651] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 48.449928] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 48.457222] ? kmsan_set_origin_inline+0x6b/0x120 [ 48.462075] ? aa_secid_to_label+0x60/0x60 [ 48.466313] security_secid_to_secctx+0x127/0x200 [ 48.471163] ctnetlink_conntrack_event+0x54a/0x4390 [ 48.476191] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 48.481667] ? kmsan_set_origin_inline+0x6b/0x120 [ 48.486563] ? ctnetlink_net_exit_batch+0x180/0x180 [ 48.491754] nf_conntrack_eventmask_report+0x579/0x970 [ 48.497047] nf_ct_delete+0x394/0x790 [ 48.500873] nf_ct_iterate_cleanup+0x4c2/0x750 [ 48.505480] ? nf_ct_iterate_cleanup+0x750/0x750 [ 48.510254] nf_ct_iterate_cleanup_net+0x17e/0x210 [ 48.515189] ? local_bh_enable+0x40/0x40 [ 48.519255] ? local_bh_enable+0x40/0x40 [ 48.523321] ctnetlink_del_conntrack+0xc32/0xd80 [ 48.528111] ? rcu_all_qs+0x2e/0x1f0 [ 48.531839] ? ctnetlink_get_conntrack+0xbc0/0xbc0 [ 48.536769] ? ctnetlink_get_conntrack+0xbc0/0xbc0 [ 48.541713] nfnetlink_rcv_msg+0xb49/0xca0 [ 48.546031] netlink_rcv_skb+0x36e/0x5f0 [ 48.550097] ? nfnetlink_bind+0x1d0/0x1d0 [ 48.554263] nfnetlink_rcv+0x36b/0x3a90 [ 48.558271] ? kmsan_set_origin+0x93/0x150 [ 48.562545] ? __irqentry_text_end+0x1fb42e/0x1fb42e [ 48.567657] ? kmsan_internal_poison_shadow+0x14e/0x1b0 [ 48.573059] ? kmsan_internal_poison_shadow+0xb8/0x1b0 [ 48.578363] ? kmsan_kmalloc+0x98/0x100 [ 48.582358] ? kmem_cache_alloc+0xa5b/0xb20 [ 48.586723] ? __build_skb+0xef/0x470 [ 48.590565] ? netlink_sendmsg+0xc20/0x1290 [ 48.594896] ? ___sys_sendmsg+0xe70/0x1290 [ 48.599147] ? __x64_sys_sendmsg+0x32d/0x460 [ 48.603564] ? do_syscall_64+0x15b/0x220 [ 48.607650] ? entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 48.613029] ? kmsan_set_origin+0x93/0x150 [ 48.617264] ? task_kmsan_context_state+0x5e/0x110 [ 48.622230] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 48.627623] ? netlink_deliver_tap+0xcb/0xf50 [ 48.632150] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 48.637552] ? rhashtable_jhash2+0x47f/0x620 [ 48.641974] netlink_unicast+0x1638/0x1720 [ 48.646228] ? nfnetlink_net_exit_batch+0x290/0x290 [ 48.651277] netlink_sendmsg+0x1205/0x1290 [ 48.655573] ___sys_sendmsg+0xe70/0x1290 [ 48.659682] ? netlink_getsockopt+0x11c0/0x11c0 [ 48.664395] ? __fget_light+0x53/0x700 [ 48.668322] ? __fdget+0x4e/0x60 [ 48.671734] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 48.677146] ? __fget_light+0x1f1/0x700 [ 48.681149] __x64_sys_sendmsg+0x32d/0x460 [ 48.685437] ? ___sys_sendmsg+0x1290/0x1290 [ 48.689800] do_syscall_64+0x15b/0x220 [ 48.693709] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 48.698905] RIP: 0033:0x440f19 [ 48.702119] Code: e8 cc ab 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 48.721041] RSP: 002b:00007ffd99bb1a88 EFLAGS: 00000213 ORIG_RAX: 000000000000002e [ 48.728757] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440f19 [ 48.736030] RDX: 0000000000000000 RSI: 0000000020d65000 RDI: 0000000000000003 [ 48.743315] RBP: 0000000000000000 R08: 00000000004002c8 R09: 00000000004002c8 [ 48.750581] R10: 0000000000a64880 R11: 0000000000000213 R12: 0000000000401e60 [ 48.757849] R13: 0000000000401ef0 R14: 0000000000000000 R15: 0000000000000000 [ 48.765509] Dumping ftrace buffer: [ 48.769052] (ftrace buffer empty) [ 48.772755] Kernel Offset: disabled [ 48.776442] Rebooting in 86400 seconds..