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 1ab51a067 P4D 1ab51a067 PUD 1ab510067 PMD 0 Oops: 0010 [#1] SMP KASAN CPU: 0 PID: 4552 Comm: syz-executor998 Not tainted 4.18.0-rc2+ #121 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801ab4ef568 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801d4ff34c0 RCX: ffffffff85ec9112 RDX: ffff8801ab4ef7c0 RSI: ffff8801d4ff34c0 RDI: ffff8801ad3f3800 RBP: ffff8801ab4ef610 R08: ffff8801d9596180 R09: ffffed003b5c46d6 R10: ffffed003b5c46d6 R11: ffff8801dae236b3 R12: ffff8801ab4ef7c0 R13: ffff8801ad3f3800 R14: ffffffff8818a920 R15: ffff8801ab414280 FS: 0000000000829880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001ab53c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_poll include/linux/poll.h:86 [inline] ep_item_poll.isra.14+0x15c/0x400 fs/eventpoll.c:887 ep_insert+0x6c1/0x1c20 fs/eventpoll.c:1459 __do_sys_epoll_ctl fs/eventpoll.c:2113 [inline] __se_sys_epoll_ctl fs/eventpoll.c:1999 [inline] __x64_sys_epoll_ctl+0xf00/0x10a0 fs/eventpoll.c:1999 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43fce9 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:00007ffe5e985b48 EFLAGS: 00000217 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9 RDX: 0000000000000003 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 0000000020000000 R11: 0000000000000217 R12: 0000000000401610 R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) CR2: 0000000000000000 ---[ end trace 1c1566da350a05d9 ]--- RIP: 0010: (null) Code: Bad RIP value. RSP: 0018:ffff8801ab4ef568 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801d4ff34c0 RCX: ffffffff85ec9112 RDX: ffff8801ab4ef7c0 RSI: ffff8801d4ff34c0 RDI: ffff8801ad3f3800 RBP: ffff8801ab4ef610 R08: ffff8801d9596180 R09: ffffed003b5c46d6 R10: ffffed003b5c46d6 R11: ffff8801dae236b3 R12: ffff8801ab4ef7c0 R13: ffff8801ad3f3800 R14: ffffffff8818a920 R15: ffff8801ab414280 FS: 0000000000829880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 00000001ab53c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400