random: sshd: uninitialized urandom read (32 bytes read, 109 bits of entropy available)
==================================================================
BUG: KASAN: slab-out-of-bounds in list_empty include/linux/list.h:189 [inline]
BUG: KASAN: slab-out-of-bounds in sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2130
Read of size 8 at addr ffff8800b40fb140 by task syzkaller951842/3319

CPU: 1 PID: 3319 Comm: syzkaller951842 Not tainted 4.4.111-g3301b55 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 9ec2a6dcba925658 ffff8801d0ab7ab0 ffffffff81d0509d
 ffffea0002d03ec0 ffff8800b40fb140 0000000000000000 ffff8800b40fb140
 ffff8800b4270238 ffff8801d0ab7ae8 ffffffff814fd433 ffff8800b40fb140
Call Trace:
 [<ffffffff81d0509d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0509d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fd433>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fd945>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fd945>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fdaa4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff825b9d09>] list_empty include/linux/list.h:189 [inline]
 [<ffffffff825b9d09>] sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2130
 [<ffffffff825ba285>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1848
 [<ffffffff825bc0c1>] sg_read+0xa21/0x1490 drivers/scsi/sg.c:538
 [<ffffffff8151c383>] __vfs_read+0x103/0x440 fs/read_write.c:432
 [<ffffffff8151e223>] vfs_read+0x123/0x3a0 fs/read_write.c:454
 [<ffffffff81520b69>] SYSC_read fs/read_write.c:569 [inline]
 [<ffffffff81520b69>] SyS_read+0xd9/0x1b0 fs/read_write.c:562
 [<ffffffff83775899>] entry_SYSCALL_64_fastpath+0x16/0x92

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8800b40fb100
 which belongs to the cache fasync_cache of size 96
The buggy address is located 64 bytes inside of
 96-byte region [ffff8800b40fb100, ffff8800b40fb160)
The buggy address belongs to the page:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.111-g3301b55 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffffffff84217840 task.stack: ffffffff84200000
RIP: 0010:[<ffffffff81d161cf>]  [<ffffffff81d161cf>] __rb_insert lib/rbtree.c:120 [inline]
RIP: 0010:[<ffffffff81d161cf>]  [<ffffffff81d161cf>] rb_insert_color+0x9f/0xcb0 lib/rbtree.c:420
RSP: 0018:ffff8801db207d18  EFLAGS: 00010003
RAX: 0a0508a8e82a0be9 RBX: ffffffff838a83a0 RCX: ffffffff838a83a0
RDX: 1ffffffff0715075 RSI: ffff8801db219710 RDI: ffff8801db219c40
RBP: ffff8801db207d60 R08: ffffffff85807f08 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff1003b640f62 R12: ffff8801d0a57df8
R13: 5028454741505f4e R14: ffff8801db219c40 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fb44234120 CR3: 00000001d26ba000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff842bcb20 ffffffff842180b0 0000000000000000 ffff8801db207d70
 ffff8801db219c40 dffffc0000000000 0000000000000000 ffff8801db219710
 ffff8801d0a57e00 ffff8801db207db0 ffffffff81d22967 ffff8801db219c58
Call Trace:
 <IRQ> 
 [<ffffffff81d22967>] timerqueue_add+0x157/0x2a0 lib/timerqueue.c:57
 [<ffffffff812aad48>] enqueue_hrtimer+0x168/0x450 kernel/time/hrtimer.c:890
 [<ffffffff812acdd2>] __run_hrtimer kernel/time/hrtimer.c:1268 [inline]
 [<ffffffff812acdd2>] __hrtimer_run_queues+0x732/0xfe0 kernel/time/hrtimer.c:1317
 [<ffffffff812aee76>] hrtimer_interrupt+0x1a6/0x440 kernel/time/hrtimer.c:1351
 [<ffffffff810b091a>] local_apic_timer_interrupt+0x6a/0xb0 arch/x86/kernel/apic/apic.c:901
 [<ffffffff837784f6>] smp_apic_timer_interrupt+0x76/0xa0 arch/x86/kernel/apic/apic.c:925
 [<ffffffff83777450>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:725
 <EOI> 
 [<ffffffff81027e15>] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline]
 [<ffffffff81027e15>] default_idle+0x55/0x3c0 arch/x86/kernel/process.c:291
 [<ffffffff8102938a>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:282
 [<ffffffff81220508>] default_idle_call+0x48/0x70 kernel/sched/idle.c:93
 [<ffffffff81220c15>] cpuidle_idle_call kernel/sched/idle.c:157 [inline]
 [<ffffffff81220c15>] cpu_idle_loop kernel/sched/idle.c:253 [inline]
 [<ffffffff81220c15>] cpu_startup_entry+0x605/0x820 kernel/sched/idle.c:301
 [<ffffffff837628b9>] rest_init+0x189/0x190 init/main.c:410
 [<ffffffff84820811>] start_kernel+0x6b9/0x6ee init/main.c:682
 [<ffffffff8481f312>] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:196
 [<ffffffff8481f454>] x86_64_start_kernel+0x140/0x163 arch/x86/kernel/head64.c:185
Code: 48 89 c2 48 c1 ea 03 42 80 3c 3a 00 0f 85 94 09 00 00 4c 8b 6b 08 4d 39 e5 0f 84 b0 01 00 00 4d 85 ed 74 1d 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 95 09 00 00 41 f6 45 00 01 0f 84 20 03 00 
RIP  [<ffffffff81d161cf>] __rb_insert lib/rbtree.c:120 [inline]
RIP  [<ffffffff81d161cf>] rb_insert_color+0x9f/0xcb0 lib/rbtree.c:420
 RSP <ffff8801db207d18>
---[ end trace 49632a044c8181b8 ]---