random: nonblocking pool is initialized
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3332 Comm: syzkaller929254 Not tainted 4.4.107-g610c835 #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b48e17c0 task.stack: ffff8800b3808000
RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81431331>]  [<ffffffff81431331>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8800b380f970  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b8ccb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8800b380f980 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801cc4e8000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000992b900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020a77fc0 CR3: 00000000b75de000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8801cc4e8158 ffff8800b380f9e0 ffffffff825b8cf1
 ffff8801cc4e8170 ffffed003989d02b ffffed003989d02e ffff8801cc4e8168
 dead4ead00000000 ffff8801cc4e8140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b8cf1>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1964
 [<ffffffff825b90b5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1846
 [<ffffffff825b9179>] sg_new_read.isra.18+0x39/0x3c0 drivers/scsi/sg.c:578
 [<ffffffff825bad72>] sg_read+0x8c2/0x1490 drivers/scsi/sg.c:467
 [<ffffffff8151b341>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151dedf>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff8151e0b9>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff81520448>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff81520448>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d84>] do_syscall_32_irqs_on arch/x86/entry/common.c:390 [inline]
 [<ffffffff81006d84>] do_fast_syscall_32+0x314/0x890 arch/x86/entry/common.c:457
 [<ffffffff837754d7>] sysenter_flags_fixed+0xd/0x17
Code: 76 ae 0c 00 e9 78 fd ff ff 90 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 49 
RIP  [<ffffffff81431331>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81431331>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81431331>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81431331>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8800b380f970>
---[ end trace 34039a8cf5783939 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..