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: 1 PID: 4060 Comm: syzkaller902130 Not tainted 4.9.78-g7be1985 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d3b23000 task.stack: ffff8801d4478000
RIP: 0010:[<ffffffff8144ede1>]  [<ffffffff8144ede1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144ede1>]  [<ffffffff8144ede1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144ede1>]  [<ffffffff8144ede1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144ede1>]  [<ffffffff8144ede1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144ede1>]  [<ffffffff8144ede1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
RSP: 0018:ffff8801d447fab0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266775b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801d447fac0 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8801d3b23000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801d51cc200 R15: dffffc0000000000
FS:  0000000001b11880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201eb000 CR3: 00000001d4b84000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff838b37a9 ffff8801d51cc358 ffff8801d447fb20 ffffffff82667781
 ffff8801d51cc370 ffffed003aa3986b ffffed003aa3986e ffff8801d51cc368
 dead4ead00000000 ffff8801d51cc340 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82667781>] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1944
 [<ffffffff82667b45>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1825
 [<ffffffff82667f26>] sg_new_read.isra.20+0x356/0x3e0 drivers/scsi/sg.c:566
 [<ffffffff82669877>] sg_read+0x8b7/0x1440 drivers/scsi/sg.c:455
 [<ffffffff8156bac3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156f85e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81573589>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81573589>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838b2c6e>] entry_SYSCALL_64_fastpath+0x29/0xe8
Code: e9 27 fc ff ff 0f 1f 44 00 00 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 3d 
RIP  [<ffffffff8144ede1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144ede1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144ede1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144ede1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144ede1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
 RSP <ffff8801d447fab0>
---[ end trace 55dea47e34764829 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..