sg_write: data in/out 2147418076/4 bytes for SCSI command 0x2-- guessing data in;
   program syz-executor1 not setting count and/or reply_len properly
kasan: CONFIG_KASAN_INLINE enabled
BUG: spinlock bad magic on CPU#0, syz-executor3/4332
 lock: 0xffff8800b9b78018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 0 PID: 4332 Comm: syz-executor3 Not tainted 4.4.111-gf851888 #16
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 95201486726bbca2 ffff8801d29cf688 ffffffff81d0507d
 ffff8800b9b78018 ffff8801d7b597c0 0000000000000018 ffff8800b9b78018
 ffffffff825b81c0 ffff8801d29cf6c8 ffffffff81245acd 0000000000000000
Call Trace:
 [<ffffffff81d0507d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0507d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81245acd>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81245eb8>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81245eb8>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81245eb8>] do_raw_spin_lock+0x228/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff83775456>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff83775456>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8121ec7f>] add_wait_queue+0x3f/0xa0 kernel/sched/wait.c:28
kasan: GPF could be caused by NULL-ptr deref or user memory access
 [<ffffffff8155b321>] __pollwait+0x2b1/0x400 fs/select.c:231
 [<ffffffff825b828b>] poll_wait include/linux/poll.h:45 [inline]
 [<ffffffff825b828b>] sg_poll+0xcb/0x340 drivers/scsi/sg.c:1180
 [<ffffffff8155ea59>] do_pollfd fs/select.c:767 [inline]
 [<ffffffff8155ea59>] do_poll fs/select.c:817 [inline]
 [<ffffffff8155ea59>] do_sys_poll+0x599/0xd70 fs/select.c:911
 [<ffffffff8161dbf3>] C_SYSC_ppoll fs/compat.c:1448 [inline]
 [<ffffffff8161dbf3>] compat_SyS_ppoll+0x1e3/0x420 fs/compat.c:1418
 [<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
 [<ffffffff837771ea>] sysenter_flags_fixed+0xd/0x17
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4346 Comm: syz-executor1 Not tainted 4.4.111-gf851888 #16
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b5d217c0 task.stack: ffff8800b9a80000
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:ffff8800b9a87a90  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b9e9b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
RBP: ffff8800b9a87aa0 R08: ffffed0039b75088 R09: ffff8801cdba8420
R10: 0000000000000005 R11: ffffed0039b75088 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800ba30c200 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f6fc9b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020067000 CR3: 00000001d21fe000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8800ba30c358 ffff8800b9a87b00 ffffffff825b9ec1
 ffff8800ba30c370 ffffed001746186b ffffed001746186e ffff8800ba30c368
 dead4ead00000000 ffff8800ba30c340 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b9ec1>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1964
 [<ffffffff825ba285>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1846
 [<ffffffff825bc0a1>] sg_read+0xa21/0x1490 drivers/scsi/sg.c:538
 [<ffffffff8151c383>] __vfs_read+0x103/0x440 fs/read_write.c:432
 [<ffffffff8151e223>] vfs_read+0x123/0x3a0 fs/read_write.c:454
 [<ffffffff81520b69>] SYSC_read fs/read_write.c:569 [inline]
 [<ffffffff81520b69>] SyS_read+0xd9/0x1b0 fs/read_write.c:562
 [<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
 [<ffffffff837771ea>] sysenter_flags_fixed+0xd/0x17
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 <ffff8800b9a87a90>
---[ end trace 7df9d9fd343cc72f ]---