random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 PGD 1ac05c067 P4D 1ac05c067 PUD 1ac155067 PMD 0 Oops: 0010 [#1] SMP KASAN CPU: 1 PID: 4574 Comm: syz-executor067 Not tainted 4.17.0+ #101 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801ae2ef4c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801d8e74800 RCX: 1ffffffff10eac7d RDX: ffff8801ae2ef9e0 RSI: ffff8801a8700000 RDI: ffff8801ac49f780 RBP: ffff8801ae2ef630 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10035c5de9d R13: ffff8801ae2ef9e0 R14: ffff8801d8e74812 R15: ffff8801d8e74c58 FS: 00000000017a9880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001d8c00000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sock_poll+0x1d1/0x710 net/socket.c:1168 vfs_poll+0x77/0x2a0 fs/select.c:40 do_pollfd fs/select.c:848 [inline] do_poll fs/select.c:896 [inline] do_sys_poll+0x6fd/0x1100 fs/select.c:990 __do_sys_ppoll fs/select.c:1098 [inline] __se_sys_ppoll fs/select.c:1070 [inline] __x64_sys_ppoll+0x2fa/0x5f0 fs/select.c:1070 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43fcf9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 6b 45 00 00 c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff562f6a88 EFLAGS: 00000213 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9 RDX: 0000000020000140 RSI: 0000000000000001 RDI: 00000000200000c0 RBP: 00000000006ca018 R08: 0000000000000008 R09: 00000000004002c8 R10: 0000000020000180 R11: 0000000000000213 R12: 0000000000401620 R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: 0000000000000000 ---[ end trace 5fa74ff5eccebb45 ]--- RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801ae2ef4c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801d8e74800 RCX: 1ffffffff10eac7d RDX: ffff8801ae2ef9e0 RSI: ffff8801a8700000 RDI: ffff8801ac49f780 RBP: ffff8801ae2ef630 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10035c5de9d R13: ffff8801ae2ef9e0 R14: ffff8801d8e74812 R15: ffff8801d8e74c58 FS: 00000000017a9880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001d8c00000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400