IPVS: Creating netns size=2552 id=4
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: 3324 Comm: syzkaller876749 Not tainted 4.4.113-gef588ef #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d1965f00 task.stack: ffff8800b6ad0000
RIP: 0010:[<ffffffff81433721>]  [<ffffffff81433721>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81433721>]  [<ffffffff81433721>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81433721>]  [<ffffffff81433721>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81433721>]  [<ffffffff81433721>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8800b6ad79f0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b6f2b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8800b6ad7a00 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff10016d5af1c R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801ccaa8000 R15: dffffc0000000000
FS:  0000000001d10880(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002026b000 CR3: 00000000b6ad8000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000246 ffff8801ccaa8158 ffff8800b6ad7a60 ffffffff825b6f51
 ffff8801ccaa8170 ffffed003995502b ffffed003995502e ffff8801ccaa8168
 dead4ead00000000 ffff8801ccaa8140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b6f51>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff825b7315>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1835
 [<ffffffff825b76d6>] sg_new_read.isra.18+0x336/0x3c0 drivers/scsi/sg.c:577
 [<ffffffff825b903c>] sg_read+0x8bc/0x1490 drivers/scsi/sg.c:466
 [<ffffffff8151c561>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151e8bd>] do_readv_writev+0x5dd/0x6e0 fs/read_write.c:810
 [<ffffffff8151ea38>] vfs_readv+0x78/0xb0 fs/read_write.c:834
 [<ffffffff81520d69>] SYSC_readv fs/read_write.c:860 [inline]
 [<ffffffff81520d69>] SyS_readv+0xd9/0x240 fs/read_write.c:852
 [<ffffffff83771b5f>] entry_SYSCALL_64_fastpath+0x1c/0x98
Code: b6 9f 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  [<ffffffff81433721>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81433721>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81433721>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81433721>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8800b6ad79f0>
---[ end trace f20465ba017b0d74 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..