[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 32.220662] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [ 32.836858] random: sshd: uninitialized urandom read (32 bytes read) [ 33.276769] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 34.470357] random: sshd: uninitialized urandom read (32 bytes read) [ 34.698797] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. [ 40.207629] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 40.326577] BUG: unable to handle kernel paging request at ffff8808a6b50454 [ 40.333757] PGD be8d067 P4D be8d067 PUD 0 [ 40.338013] Oops: 0000 [#1] SMP PTI [ 40.341629] Dumping ftrace buffer: [ 40.345156] (ftrace buffer empty) [ 40.348853] Modules linked in: [ 40.352071] CPU: 1 PID: 4523 Comm: syz-executor523 Not tainted 4.17.0-rc3+ #88 [ 40.359453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.368878] RIP: 0010:process_preds+0x4238/0x4f20 [ 40.373738] RSP: 0018:ffff8801aef9f8e0 EFLAGS: 00010246 [ 40.379123] RAX: 0000000000000000 RBX: ffff8808a6b50454 RCX: 0000000000000000 [ 40.386405] RDX: ffff8801b01dfde4 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 [ 40.393699] RBP: ffff8801aef9fac0 R08: 0000000000000096 R09: 0000000000000002 [ 40.400990] R10: 0000000000000000 R11: ffff8801aef90000 R12: 0000000000000000 [ 40.408275] R13: ffff8801b01dde00 R14: 0000000000000000 R15: 0000000000000000 [ 40.415577] FS: 0000000001b9d880(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 40.423804] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.429685] CR2: ffff8808a6b50454 CR3: 000000019923a000 CR4: 00000000001406e0 [ 40.436961] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.444250] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.451518] Call Trace: [ 40.454148] ? _cond_resched+0x3c/0xd0 [ 40.458081] ftrace_profile_set_filter+0x2aa/0x6a0 [ 40.463073] perf_ioctl+0x1c80/0x5840 [ 40.466937] ? kmsan_set_origin_inline+0x41/0x120 [ 40.471804] ? __msan_poison_alloca+0x15c/0x1d0 [ 40.476504] ? __x64_sys_ioctl+0x280/0x320 [ 40.480762] ? do_vfs_ioctl+0x160/0x2440 [ 40.484835] ? __x64_sys_ioctl+0x280/0x320 [ 40.489066] ? perf_poll+0x360/0x360 [ 40.492798] do_vfs_ioctl+0xaf0/0x2440 [ 40.496693] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 40.502070] ? __fget_light+0x1f5/0x710 [ 40.506065] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 40.511440] __x64_sys_ioctl+0x280/0x320 [ 40.515508] do_syscall_64+0x154/0x220 [ 40.519405] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 40.524591] RIP: 0033:0x43fdb9 [ 40.527772] RSP: 002b:00007ffe142ff548 EFLAGS: 00000213 ORIG_RAX: 0000000000000010 [ 40.535480] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9 [ 40.542745] RDX: 0000000020000200 RSI: 0000000040082406 RDI: 0000000000000003 [ 40.550017] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 40.557305] R10: 0000000000000000 R11: 0000000000000213 R12: 00000000004016e0 [ 40.564573] R13: 0000000000401770 R14: 0000000000000000 R15: 0000000000000000 [ 40.571838] Code: 44 4c 24 2c 8b 02 89 44 24 40 49 c1 e6 04 4c 0b 64 24 70 4c 89 74 24 18 4b 8d 5c 35 04 41 89 ce 0f 85 b0 00 00 00 44 89 74 24 08 <44> 8b 33 48 89 df e8 6d ca 4c 00 8b 00 41 09 c7 44 8b ac 24 e0 [ 40.591227] RIP: process_preds+0x4238/0x4f20 RSP: ffff8801aef9f8e0 [ 40.597548] CR2: ffff8808a6b50454 [ 40.601000] ---[ end trace 31a1266608522c59 ]--- [ 40.605764] Kernel panic - not syncing: Fatal exception [ 40.611586] Dumping ftrace buffer: [ 40.615113] (ftrace buffer empty) [ 40.618825] Kernel Offset: disabled [ 40.622445] Rebooting in 86400 seconds..