Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 21.415129] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.563471] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 25.912132] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 26.869989] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.5' (ECDSA) to the list of known hosts. 2018/03/07 16:09:06 parsed 1 programs 2018/03/07 16:09:06 executed programs: 0 [ 32.946144] IPVS: Creating netns size=2552 id=1 [ 32.981158] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 32.981158] program syz-executor0 not setting count and/or reply_len properly [ 32.983358] IPVS: Creating netns size=2552 id=2 [ 33.022240] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.022240] program syz-executor1 not setting count and/or reply_len properly [ 33.043968] IPVS: Creating netns size=2552 id=3 [ 33.052512] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.052512] program syz-executor0 not setting count and/or reply_len properly [ 33.069770] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.069770] program syz-executor1 not setting count and/or reply_len properly [ 33.104320] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.104320] program syz-executor5 not setting count and/or reply_len properly [ 33.114380] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.114380] program syz-executor0 not setting count and/or reply_len properly [ 33.138314] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.138314] program syz-executor1 not setting count and/or reply_len properly [ 33.141871] IPVS: Creating netns size=2552 id=4 [ 33.158685] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.158685] program syz-executor0 not setting count and/or reply_len properly [ 33.190201] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.190201] program syz-executor0 not setting count and/or reply_len properly [ 33.214368] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 33.214368] program syz-executor5 not setting count and/or reply_len properly [ 33.235373] IPVS: Creating netns size=2552 id=5 [ 33.305910] IPVS: Creating netns size=2552 id=6 [ 33.336125] IPVS: Creating netns size=2552 id=7 [ 33.395326] IPVS: Creating netns size=2552 id=8 2018/03/07 16:09:11 executed programs: 651 [ 37.994755] sg_write: 643 callbacks suppressed [ 38.000266] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.000266] program syz-executor0 not setting count and/or reply_len properly [ 38.016950] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.016950] program syz-executor7 not setting count and/or reply_len properly [ 38.017616] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.017616] program syz-executor6 not setting count and/or reply_len properly [ 38.023410] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.023410] program syz-executor3 not setting count and/or reply_len properly [ 38.034572] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.034572] program syz-executor5 not setting count and/or reply_len properly [ 38.056121] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.056121] program syz-executor6 not setting count and/or reply_len properly [ 38.058656] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.058656] program syz-executor3 not setting count and/or reply_len properly [ 38.071048] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.071048] program syz-executor5 not setting count and/or reply_len properly [ 38.092629] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.092629] program syz-executor6 not setting count and/or reply_len properly [ 38.095925] sg_write: data in/out 134348763/216 bytes for SCSI command 0x9f-- guessing data in; [ 38.095925] program syz-executor3 not setting count and/or reply_len properly [ 41.421592] kasan: CONFIG_KASAN_INLINE enabled [ 41.429592] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 41.633930] Dumping ftrace buffer: [ 41.637447] (ftrace buffer empty) [ 41.641142] Modules linked in: [ 41.641150] CPU: 0 PID: 7278 Comm: syz-executor7 Not tainted 4.4.120-gd63fdf6 #29 [ 41.641153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.641157] task: ffff8800b4f8b000 task.stack: ffff8800b4ed0000 [ 41.641174] RIP: 0010:[] [] sg_read+0xd17/0x1490 [ 41.641178] RSP: 0018:ffff8800b4ed7b50 EFLAGS: 00010246 [ 41.641182] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff825bab1e [ 41.641186] RDX: 0000000000000000 RSI: 0000000020000024 RDI: ffff8800b4a80170 [ 41.641190] RBP: ffff8800b4ed7c58 R08: 0000000000000000 R09: 0000000000000001 [ 41.641194] R10: 0000000000000000 R11: 1ffff100169daf30 R12: 0000000000000076 [ 41.641197] R13: 0000000000000000 R14: ffff8800b50fbb40 R15: ffff8800b4a80140 [ 41.641203] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f7772b40 [ 41.641207] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 41.641211] CR2: 00000000200006c0 CR3: 00000001d26dc000 CR4: 0000000000160670 [ 41.641217] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.641221] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.641222] Stack: [ 41.641230] 0000000000000000 0000000000000000 0000000000000000 ffff8800b4a80158 [ 41.641238] 0000000000000000 ffff8800b4a80168 000000000000009a 0000000000000000 [ 41.641246] ffff8800b779ea00 0000000000001000 1ffff100169daf76 0000000020000024 [ 41.641247] Call Trace: [ 41.641257] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 41.641266] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 41.641273] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 41.641282] [] __vfs_read+0x103/0x440 [ 41.641289] [] ? vfs_iter_write+0x2d0/0x2d0 [ 41.641295] [] ? fsnotify+0x5ad/0xee0 [ 41.641301] [] ? fsnotify+0xee0/0xee0 [ 41.641311] [] ? avc_policy_seqno+0x9/0x20 [ 41.641318] [] ? selinux_file_permission+0x348/0x460 [ 41.641326] [] ? security_file_permission+0x89/0x1e0 [ 41.641332] [] ? rw_verify_area+0x100/0x2f0 [ 41.641337] [] vfs_read+0x123/0x3a0 [ 41.641343] [] SyS_read+0xd9/0x1b0 [ 41.641349] [] ? do_sendfile+0xd30/0xd30 [ 41.641357] [] ? do_fast_syscall_32+0xd7/0x8a0 [ 41.641363] [] ? do_sendfile+0xd30/0xd30 [ 41.641369] [] do_fast_syscall_32+0x321/0x8a0 [ 41.641378] [] sysenter_flags_fixed+0xd/0x17 [ 41.641473] Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 97 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5f 28 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 6b 06 00 00 48 8b 1b 48 85 db 0f 84 3b 03 00 [ 41.641480] RIP [] sg_read+0xd17/0x1490 [ 41.641482] RSP [ 41.711069] ---[ end trace 16631548f74e320b ]--- [ 41.711073] Kernel panic - not syncing: Fatal exception [ 41.718409] Dumping ftrace buffer: [ 41.718412] (ftrace buffer empty) [ 41.718414] Kernel Offset: disabled [ 41.959537] Rebooting in 86400 seconds..