random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available)
random: sshd: uninitialized urandom read (32 bytes read, 35 bits of entropy available)
random: nonblocking pool is initialized
==================================================================
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:2120
Read of size 8 at addr ffff8801d1ac7140 by task syzkaller597697/3788

CPU: 1 PID: 3788 Comm: syzkaller597697 Not tainted 4.4.120-gd63fdf6 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 7f53975a22bfaa91 ffff8801c648fab0 ffffffff81d0408d
 ffffea000746b1c0 ffff8801d1ac7140 0000000000000000 ffff8801d1ac7140
 ffff8801d90e0238 ffff8801c648fae8 ffffffff814fe143 ffff8801d1ac7140
Call Trace:
 [<ffffffff81d0408d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0408d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff814fe143>] print_address_description+0x73/0x260 mm/kasan/report.c:252
 [<ffffffff814fe655>] kasan_report_error mm/kasan/report.c:351 [inline]
 [<ffffffff814fe655>] kasan_report+0x285/0x370 mm/kasan/report.c:408
 [<ffffffff814fe7b4>] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429
 [<ffffffff825b8439>] list_empty include/linux/list.h:189 [inline]
 [<ffffffff825b8439>] sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2120
 [<ffffffff825b89b5>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1837
 [<ffffffff825ba85b>] sg_read+0xa1b/0x1490 drivers/scsi/sg.c:537
 [<ffffffff8151cf33>] __vfs_read+0x103/0x440 fs/read_write.c:432
 [<ffffffff8151edd3>] vfs_read+0x123/0x3a0 fs/read_write.c:454
 [<ffffffff81521719>] SYSC_read fs/read_write.c:569 [inline]
 [<ffffffff81521719>] SyS_read+0xd9/0x1b0 fs/read_write.c:562
 [<ffffffff8377395f>] entry_SYSCALL_64_fastpath+0x1c/0x98

Allocated by task 0:
(stack is not available)

Freed by task 0:
(stack is not available)

The buggy address belongs to the object at ffff8801d1ac7100
 which belongs to the cache fasync_cache of size 96
The buggy address is located 64 bytes inside of
 96-byte region [ffff8801d1ac7100, ffff8801d1ac7160)
The buggy address belongs to the page:
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<          (null)>]           (null)
PGD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.4.120-gd63fdf6 #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffffffff84217840 task.stack: ffffffff84200000
RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
RSP: 0018:ffff8801db207d18  EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff8801db207d68 RCX: ffffffff812a0eeb
RDX: 0000000000000100 RSI: ffffffff842bdb60 RDI: ffff8801c5ec1b10
RBP: ffff8801db207df0 R08: 0000000000000001 R09: ffffffff85115770
R10: 0000000000000000 R11: 1ffff1003b640f70 R12: 1ffff1003b640fa9
R13: ffff8801c5ec1ab0 R14: 0000000000000101 R15: ffffffff838444e0
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000b3e9e000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff812a0efb ffffffff812a0e4c 0000000000000000 ffffffff842c35a0
 ffff8801c5ec1b10 0000000000000000 0000000041b58ab3 ffffffff83faab59
 ffffffff812a0d70 ffffffff84218110 ffff8801db207d68 ffffffff851bf540
Call Trace:
 <IRQ> 
 [<ffffffff812a2e54>] __run_timers kernel/time/timer.c:1261 [inline]
 [<ffffffff812a2e54>] run_timer_softirq+0x604/0xbb0 kernel/time/timer.c:1444
 [<ffffffff83776e57>] __do_softirq+0x227/0xa38 kernel/softirq.c:273
 [<ffffffff8113daa9>] invoke_softirq kernel/softirq.c:350 [inline]
 [<ffffffff8113daa9>] irq_exit+0x119/0x140 kernel/softirq.c:391
 [<ffffffff837765bb>] exiting_irq arch/x86/include/asm/apic.h:653 [inline]
 [<ffffffff837765bb>] smp_apic_timer_interrupt+0x7b/0xa0 arch/x86/kernel/apic/apic.c:926
 [<ffffffff83775510>] apic_timer_interrupt+0xa0/0xb0 arch/x86/entry/entry_64.S:737
 <EOI> 
 [<ffffffff81027e85>] arch_safe_halt arch/x86/include/asm/paravirt.h:117 [inline]
 [<ffffffff81027e85>] default_idle+0x55/0x3c0 arch/x86/kernel/process.c:290
 [<ffffffff810293fa>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:281
 [<ffffffff81221468>] default_idle_call+0x48/0x70 kernel/sched/idle.c:93
 [<ffffffff81221b6d>] cpuidle_idle_call kernel/sched/idle.c:157 [inline]
 [<ffffffff81221b6d>] cpu_idle_loop kernel/sched/idle.c:253 [inline]
 [<ffffffff81221b6d>] cpu_startup_entry+0x5fd/0x8f0 kernel/sched/idle.c:301
 [<ffffffff837608b9>] rest_init+0x189/0x190 init/main.c:410
 [<ffffffff84822811>] start_kernel+0x6b9/0x6ee init/main.c:682
 [<ffffffff84821312>] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:196
 [<ffffffff84821454>] x86_64_start_kernel+0x140/0x163 arch/x86/kernel/head64.c:185
Code:  Bad RIP value.
RIP  [<          (null)>]           (null)
 RSP <ffff8801db207d18>
CR2: 0000000000000000
---[ end trace f5661e486833d103 ]---