syzbot

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)
WARNING: CPU: 0 PID: 4529 at include/net/sock.h:644 sk_del_node_init include/net/sock.h:644 [inline]
WARNING: CPU: 0 PID: 4529 at include/net/sock.h:644 smc_unhash_sk+0x357/0x4b0 net/smc/af_smc.c:86
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 4529 Comm: syz-executor966 Not tainted 4.18.0-rc5+ #153
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x252/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
RIP: 0010:sk_del_node_init include/net/sock.h:644 [inline]
RIP: 0010:smc_unhash_sk+0x357/0x4b0 net/smc/af_smc.c:86
Code: 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 88 00 00 00 48 81 c4 c0 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c9 52 1a fa <0f> 0b e9 47 ff ff ff 4c 89 ff 48 89 85 28 ff ff ff e8 b3 31 58 fa 
RSP: 0018:ffff8801b1927480 EFLAGS: 00010293
RAX: ffff8801ab8fe140 RBX: ffff8801ac0450c0 RCX: ffffffff8761b7f6
RDX: 0000000000000000 RSI: ffffffff8761b8b7 RDI: 0000000000000005
RBP: ffff8801b1927568 R08: ffff8801ab8fe140 R09: ffffed0035808a28
R10: ffffed0035808a28 R11: ffff8801ac045143 R12: 1ffff10036324e94
R13: ffff8801b1927540 R14: ffffffff89937480 R15: ffff8801ac045140
 smc_release+0x3cf/0x670 net/smc/af_smc.c:162
 __sock_release+0xd7/0x260 net/socket.c:599
 sock_close+0x19/0x20 net/socket.c:1150
 __fput+0x355/0x8b0 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1b08/0x2750 kernel/exit.c:865
 do_group_exit+0x177/0x440 kernel/exit.c:968
 __do_sys_exit_group kernel/exit.c:979 [inline]
 __se_sys_exit_group kernel/exit.c:977 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:977
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43ec98
Code: Bad RIP value.
RSP: 002b:00007ffcd2971298 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ec98
RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00000000004be548 R08: 00000000000000e7 R09: ffffffffffffffd0
R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..