random: sshd: uninitialized urandom read (32 bytes read, 97 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 ffff8801d2247140 by task syzkaller455472/3312

CPU: 1 PID: 3312 Comm: syzkaller455472 Not tainted 4.4.112-g3fc4284 #32
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 859da19eb456a9db ffff8801d22679f0 ffffffff81d054ed
 ffffea00074891c0 ffff8801d2247140 0000000000000000 ffff8801d2247140
 ffff8801d0f8a338 ffff8801d2267a28 ffffffff814fd953 ffff8801d2247140
Call Trace:
 [<ffffffff81d054ed>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d054ed>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fd953>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fde65>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fde65>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fdfc4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff825ba2c9>] list_empty include/linux/list.h:189 [inline]
 [<ffffffff825ba2c9>] sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2130
 [<ffffffff825ba845>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1848
 [<ffffffff825bc681>] sg_read+0xa21/0x1490 drivers/scsi/sg.c:538
 [<ffffffff8151d171>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151f4cd>] do_readv_writev+0x5dd/0x6e0 fs/read_write.c:810
 [<ffffffff8151f648>] vfs_readv+0x78/0xb0 fs/read_write.c:834
 [<ffffffff81521999>] SYSC_readv fs/read_write.c:860 [inline]
 [<ffffffff81521999>] SyS_readv+0xd9/0x240 fs/read_write.c:852
 [<ffffffff837761d9>] 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 ffff8801d2247100
 which belongs to the cache fasync_cache of size 96
The buggy address is located 64 bytes inside of
 96-byte region [ffff8801d2247100, ffff8801d2247160)
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 4.4.112-g3fc4284 #32
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffffffff84217840 task.stack: ffffffff84200000
RIP: 0010:[<ffffffff81d674a6>]  [<ffffffff81d674a6>] lookup_object lib/debugobjects.c:120 [inline]
RIP: 0010:[<ffffffff81d674a6>]  [<ffffffff81d674a6>] debug_object_deactivate+0x1a6/0x3c0 lib/debugobjects.c:465
RSP: 0018:ffff8801db207d10  EFLAGS: 00010803
RAX: 0000000000000096 RBX: e90006e0d8e80b0f RCX: ffff8800b7bafaf0
RDX: 1d2000dc1b1d0164 RSI: ffffffff842c2560 RDI: e90006e0d8e80b27
RBP: ffff8801db207dd8 R08: 1ffff10039a9c1ae R09: ffffffff85133d90
R10: 0000000000000001 R11: 1ffff1003b640f68 R12: 1ffff1003b640fa6
R13: 0000000000000003 R14: dffffc0000000000 R15: ffffffff857cea08
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005561e7130110 CR3: 00000000b6a4a000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 0000000000000000 ffffffff842c2560 ffff8800b7bafaf0
 0000000041b58ab3 ffffffff83fccf59 ffffffff81d67300 ffffffff812a1f4c
 ffffffff00000000 ffffffff00000000 0000000000000000 ffffffff838691c0
Call Trace:
 <IRQ> 
 [<ffffffff812a1c76>] debug_timer_deactivate kernel/time/timer.c:618 [inline]
 [<ffffffff812a1c76>] debug_deactivate kernel/time/timer.c:670 [inline]
 [<ffffffff812a1c76>] detach_timer kernel/time/timer.c:716 [inline]
 [<ffffffff812a1c76>] detach_expired_timer kernel/time/timer.c:727 [inline]
 [<ffffffff812a1c76>] __run_timers kernel/time/timer.c:1246 [inline]
 [<ffffffff812a1c76>] run_timer_softirq+0x336/0xbb0 kernel/time/timer.c:1437
 [<ffffffff837796fd>] __do_softirq+0x24d/0xa59 kernel/softirq.c:273
 [<ffffffff8113da79>] invoke_softirq kernel/softirq.c:350 [inline]
 [<ffffffff8113da79>] irq_exit+0x119/0x140 kernel/softirq.c:391
 [<ffffffff83778e3b>] exiting_irq arch/x86/include/asm/apic.h:653 [inline]
 [<ffffffff83778e3b>] smp_apic_timer_interrupt+0x7b/0xa0 arch/x86/kernel/apic/apic.c:926
 [<ffffffff83777d90>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:725
 <EOI> 
 [<ffffffff81027ee5>] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline]
 [<ffffffff81027ee5>] default_idle+0x55/0x3c0 arch/x86/kernel/process.c:291
 [<ffffffff8102945a>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:282
 [<ffffffff812204d8>] default_idle_call+0x48/0x70 kernel/sched/idle.c:93
 [<ffffffff81220be5>] cpuidle_idle_call kernel/sched/idle.c:157 [inline]
 [<ffffffff81220be5>] cpu_idle_loop kernel/sched/idle.c:253 [inline]
 [<ffffffff81220be5>] cpu_startup_entry+0x605/0x820 kernel/sched/idle.c:301
 [<ffffffff83763159>] 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: eb 1a 48 89 da 48 c1 ea 03 42 80 3c 32 00 0f 85 86 01 00 00 48 8b 1b 48 85 db 74 7a 48 8d 7b 18 41 83 c5 01 48 89 fa 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3c 01 00 00 48 3b 4b 18 75 c6 48 8d 7b 10 
RIP  [<ffffffff81d674a6>] lookup_object lib/debugobjects.c:120 [inline]
RIP  [<ffffffff81d674a6>] debug_object_deactivate+0x1a6/0x3c0 lib/debugobjects.c:465
 RSP <ffff8801db207d10>
---[ end trace b6f6716181a16c76 ]---