[ 34.932604] audit: type=1800 audit(1577189332.789:33): pid=7028 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 34.961252] audit: type=1800 audit(1577189332.789:34): pid=7028 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 39.000894] random: sshd: uninitialized urandom read (32 bytes read) [ 39.356588] audit: type=1400 audit(1577189337.209:35): avc: denied { map } for pid=7201 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 [ 39.410949] random: sshd: uninitialized urandom read (32 bytes read) [ 40.022896] random: sshd: uninitialized urandom read (32 bytes read) [ 40.219107] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.29' (ECDSA) to the list of known hosts. [ 45.775039] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 45.894099] audit: type=1400 audit(1577189343.749:36): avc: denied { map } for pid=7213 comm="syz-executor653" path="/root/syz-executor653221607" 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 [ 45.922554] skbuff: skb_over_panic: text:ffffffff85eeef77 len:194 put:82 head:ffff88809b46b540 data:ffff88809b46b540 tail:0xc2 end:0xc0 dev: [ 45.936206] ------------[ cut here ]------------ [ 45.941009] kernel BUG at net/core/skbuff.c:104! [ 45.945857] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 45.952608] Modules linked in: [ 45.955841] CPU: 0 PID: 7213 Comm: syz-executor653 Not tainted 4.14.160-syzkaller #0 [ 45.963702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.973061] task: ffff8880974c8500 task.stack: ffff88809e4c0000 [ 45.979222] RIP: 0010:skb_panic+0x17c/0x17e [ 45.983530] RSP: 0018:ffff88809e4c7a70 EFLAGS: 00010286 [ 45.988876] RAX: 0000000000000086 RBX: ffff8880986e3480 RCX: 0000000000000000 [ 45.996176] RDX: 0000000000000000 RSI: ffffffff86cc4480 RDI: ffffed1013c98f44 [ 46.003483] RBP: ffff88809e4c7ad8 R08: 0000000000000086 R09: ffff8880974c8da0 [ 46.010748] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87584ee0 [ 46.018171] R13: ffffffff85eeef77 R14: 0000000000000052 R15: ffffffff875846e0 [ 46.025551] FS: 0000000000a7f880(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 [ 46.033899] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.039856] CR2: 000055b85cac30b8 CR3: 0000000095640000 CR4: 00000000001406f0 [ 46.047156] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.054416] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.061684] Call Trace: [ 46.064260] ? sctp_addto_chunk+0xe7/0x2a0 [ 46.068475] skb_put.cold+0x23/0x23 [ 46.072093] sctp_addto_chunk+0xe7/0x2a0 [ 46.076155] ? sctp_association_new+0x2e0/0x1e80 [ 46.080925] sctp_make_strreset_req+0x37f/0x3d0 [ 46.085577] ? sctp_make_fwdtsn+0x200/0x200 [ 46.089894] ? sctp_send_reset_streams+0x371/0xb50 [ 46.094806] sctp_send_reset_streams+0x432/0xb50 [ 46.099548] ? kasan_check_write+0x14/0x20 [ 46.103776] sctp_setsockopt+0x2486/0x3f50 [ 46.108092] ? sctp_setsockopt_paddr_thresholds+0x3b0/0x3b0 [ 46.113789] ? sock_has_perm+0x1ed/0x280 [ 46.117839] ? selinux_tun_dev_create+0xc0/0xc0 [ 46.122505] ? trace_hardirqs_on+0xd/0x10 [ 46.126634] ? selinux_netlbl_socket_setsockopt+0x8f/0x340 [ 46.132238] ? selinux_netlbl_sock_rcv_skb+0x430/0x430 [ 46.137781] sock_common_setsockopt+0x94/0xd0 [ 46.142270] SyS_setsockopt+0x13c/0x210 [ 46.146223] ? SyS_recv+0x40/0x40 [ 46.149657] ? do_syscall_64+0x53/0x640 [ 46.154219] ? SyS_recv+0x40/0x40 [ 46.157662] do_syscall_64+0x1e8/0x640 [ 46.161530] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 46.166363] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 46.171528] RIP: 0033:0x4402d9 [ 46.174698] RSP: 002b:00007ffdf3610618 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 46.182568] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402d9 [ 46.189820] RDX: 0000000000000077 RSI: 0000000000000084 RDI: 0000000000000003 [ 46.197080] RBP: 00000000006ca018 R08: 00000000000002de R09: 00000000004002c8 [ 46.204340] R10: 000000002081e000 R11: 0000000000000246 R12: 0000000000401b60 [ 46.211589] R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000 [ 46.218841] Code: fc 4c 8b 4d b8 8b 8b 80 00 00 00 41 57 45 89 f0 4c 89 ea ff 75 d0 4c 89 e6 48 c7 c7 20 47 58 87 ff 75 c8 ff 75 c0 e8 b4 f7 32 fc <0f> 0b e8 8a c3 44 fc 4c 8b 6d 08 e8 d1 3a 6f fc 48 c7 c1 a0 4e [ 46.238269] RIP: skb_panic+0x17c/0x17e RSP: ffff88809e4c7a70 [ 46.244449] ---[ end trace d15185b01e49035c ]--- [ 46.249201] Kernel panic - not syncing: Fatal exception [ 46.256014] Kernel Offset: disabled [ 46.259637] Rebooting in 86400 seconds..