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 1abd7e067 P4D 1abd7e067 PUD 1ab73d067 PMD 0 Oops: 0010 [#1] SMP KASAN CPU: 1 PID: 4568 Comm: syz-executor302 Not tainted 4.17.0+ #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801d8df7470 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801ce5e0800 RCX: 1ffffffff10eac7d RDX: ffff8801d8df7990 RSI: ffff8801d2c10040 RDI: ffff8801b0feb780 RBP: ffff8801d8df75e0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b1bee93 R13: ffff8801d8df7990 R14: ffff8801ce5e0812 R15: ffff8801ce5e0c58 FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:000000000920d840 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001ab6f3000 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_compat_sys_ppoll fs/select.c:1425 [inline] __se_compat_sys_ppoll fs/select.c:1398 [inline] __ia32_compat_sys_ppoll+0x2f3/0x5f0 fs/select.c:1398 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline] do_fast_syscall_32+0x345/0xf9b arch/x86/entry/common.c:397 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 RIP: 0023:0xf7feacb9 Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000ffcd312c EFLAGS: 00000292 ORIG_RAX: 0000000000000135 RAX: ffffffffffffffda RBX: 00000000200000c0 RCX: 0000000000000001 RDX: 0000000020000140 RSI: 0000000020000180 RDI: 0000000000000008 RBP: 00000000080baec8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000207 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: 0000000000000000 ---[ end trace a3378708abdb4d1b ]--- RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801d8df7470 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801ce5e0800 RCX: 1ffffffff10eac7d RDX: ffff8801d8df7990 RSI: ffff8801d2c10040 RDI: ffff8801b0feb780 RBP: ffff8801d8df75e0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff1003b1bee93 R13: ffff8801d8df7990 R14: ffff8801ce5e0812 R15: ffff8801ce5e0c58 FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:000000000920d840 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001ab6f3000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400