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: 3328 Comm: syzkaller417656 Not tainted 4.4.111-g3301b55 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d183df00 task.stack: ffff8801d16b0000
RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81433621>]  [<ffffffff81433621>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8801d16b79f0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b9ebb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801d16b7a00 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800afe7c200 R15: dffffc0000000000
FS:  00000000014f4880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000204e9fd0 CR3: 00000001d6e28000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8800afe7c358 ffff8801d16b7a60 ffffffff825b9ee1
 ffff8800afe7c370 ffffed0015fcf86b ffffed0015fcf86e ffff8800afe7c368
 dead4ead00000000 ffff8800afe7c340 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b9ee1>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1964
 [<ffffffff825ba2a5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1846
 [<ffffffff825ba369>] sg_new_read.isra.18+0x39/0x3c0 drivers/scsi/sg.c:578
 [<ffffffff825bbf62>] sg_read+0x8c2/0x1490 drivers/scsi/sg.c:467
 [<ffffffff8151cc51>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151efad>] do_readv_writev+0x5dd/0x6e0 fs/read_write.c:810
 [<ffffffff8151f128>] vfs_readv+0x78/0xb0 fs/read_write.c:834
 [<ffffffff81521479>] SYSC_readv fs/read_write.c:860 [inline]
 [<ffffffff81521479>] SyS_readv+0xd9/0x240 fs/read_write.c:852
 [<ffffffff83775899>] entry_SYSCALL_64_fastpath+0x16/0x92
Code: 96 a4 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  [<ffffffff81433621>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81433621>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81433621>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81433621>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8801d16b79f0>
---[ end trace 1b0bfc7afc3de6b5 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..