Starting mcstransd: [ 21.161410] random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available) [....] 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: [ 25.815322] random: sshd: uninitialized urandom read (32 bytes read, 42 bits of entropy available) [ 26.217170] random: sshd: uninitialized urandom read (32 bytes read, 42 bits of entropy available) [ 27.154700] random: nonblocking pool is initialized Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.017380] IPVS: Creating netns size=2552 id=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.062618] IPVS: Creating netns size=2552 id=2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.113829] IPVS: Creating netns size=2552 id=3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.148613] IPVS: Creating netns size=2552 id=4 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.204166] IPVS: Creating netns size=2552 id=5 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.275003] IPVS: Creating netns size=2552 id=6 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.309484] kasan: CONFIG_KASAN_INLINE enabled [ 33.313911] kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN [ 33.330720] Dumping ftrace buffer: [ 33.334238] (ftrace buffer empty) [ 33.337933] Modules linked in: [ 33.341231] CPU: 0 PID: 3813 Comm: syzkaller127191 Not tainted 4.4.120-gd63fdf6 #28 [ 33.349007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.358345] task: ffff8801c4cd3000 task.stack: ffff8801c4d60000 [ 33.364383] RIP: 0010:[] [] sg_remove_scat.isra.17+0x17b/0x2d0 [ 33.373689] RSP: 0018:ffff8801c4d67b20 EFLAGS: 00010202 [ 33.379116] RAX: 1ffff1003878702d RBX: ffff8801c3c38158 RCX: 0000000000000001 [ 33.386368] RDX: 0000000000000008 RSI: 0000000000000000 RDI: ffff8801d4948874 [ 33.393622] RBP: ffff8801c4d67b70 R08: 0000000000000000 R09: 0000000000000001 [ 33.400875] R10: 0000000000000000 R11: 1ffff100389acf3e R12: 0000000000000001 executing program executing program [ 33.408123] R13: 0000000000000008 R14: 0000000000000000 R15: dffffc0000000000 [ 33.415364] FS: 00007f736510f700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 33.423563] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.429419] CR2: 000000000045a470 CR3: 00000001d1d36000 CR4: 0000000000160670 [ 33.436663] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.443905] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.451150] Stack: executing program executing program executing program [ 33.453271] ffff8801c3c38170 ffffed003878702b ffffed003878702e ffff8801c3c38168 [ 33.461244] ffff8801d4948858 ffff8801c3c38140 0000000000000000 0000000000000000 [ 33.469216] 0000000000000000 ffff8801c3c38238 ffff8801c4d67bb0 ffffffff825b89d5 [ 33.477188] Call Trace: [ 33.479752] [] sg_finish_rem_req+0x2b5/0x340 [ 33.485781] [] sg_read+0xa1b/0x1490 [ 33.491030] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 33.497674] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 executing program executing program [ 33.504660] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 33.511469] [] ? sg_proc_seq_show_debug+0xda0/0xda0 [ 33.518103] [] __vfs_read+0x103/0x440 [ 33.523523] [] ? quarantine_put+0xab/0x180 [ 33.529386] [] ? vfs_iter_write+0x2d0/0x2d0 [ 33.535332] [] ? fsnotify+0x5ad/0xee0 [ 33.540749] [] ? fsnotify+0xee0/0xee0 [ 33.546169] [] ? avc_policy_seqno+0x9/0x20 [ 33.552023] [] ? selinux_file_permission+0x348/0x460 executing program executing program executing program [ 33.558747] [] ? security_file_permission+0x89/0x1e0 [ 33.565472] [] ? rw_verify_area+0x100/0x2f0 [ 33.571413] [] vfs_read+0x123/0x3a0 [ 33.576662] [] SyS_read+0xd9/0x1b0 [ 33.581820] [] ? do_sendfile+0xd30/0xd30 [ 33.587502] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 33.593966] [] entry_SYSCALL_64_fastpath+0x1c/0x98 [ 33.600508] Code: 45 b8 eb 3e e8 a7 87 da fe 48 8b 45 c8 48 c1 e8 03 42 80 3c 38 00 0f 85 3a 01 00 00 4c 8b 73 10 4b 8d 14 2e 48 89 d1 48 c1 e9 03 <42> 80 3c 39 00 0f 85 0b 01 00 00 48 8b 12 49 83 c5 08 48 85 d2 [ 33.627078] RIP [] sg_remove_scat.isra.17+0x17b/0x2d0 [ 33.634005] RSP [ 33.637822] ---[ end trace 4581fc0daa4f111e ]--- [ 33.642698] Kernel panic - not syncing: Fatal exception [ 33.648444] Dumping ftrace buffer: [ 33.651952] (ftrace buffer empty) [ 33.655628] Kernel Offset: disabled [ 33.659221] Rebooting in 86400 seconds..