kasan: CONFIG_KASAN_INLINE enabled
BUG: spinlock bad magic on CPU#0, syzkaller247132/3336
 lock: 0xffff8801bdcd8018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 0 PID: 3336 Comm: syzkaller247132 Not tainted 4.9.75-gb54d99a #18
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db207898 ffffffff81d93049 ffff8801bdcd8018 ffff8801c9230000
 0000000000000001 0000000000000001 0000000000000000 ffff8801db2078d8
 ffffffff812476ed ffffffff81222a2e 0000000000000000 0000000000000000
Call Trace:
 <IRQ> 
 [<ffffffff81d93049>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d93049>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff812476ed>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81247a24>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81247a24>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81247a24>] do_raw_spin_lock+0x174/0x1e0 kernel/locking/spinlock_debug.c:112
 [<ffffffff838b08d6>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff838b08d6>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff81222a2e>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff8266a0ac>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1386
 [<ffffffff81d227a4>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:331
 [<ffffffff825cf6a5>] scsi_end_request+0x135/0x5c0 drivers/scsi/scsi_lib.c:627
 [<ffffffff825d92de>] scsi_io_completion+0x15de/0x1730 drivers/scsi/scsi_lib.c:829
 [<ffffffff825bbd08>] scsi_finish_command+0x3b8/0x530 drivers/scsi/scsi.c:607
 [<ffffffff825d69b0>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1567
 [<ffffffff81d243c5>] blk_mq_ipi_complete_request block/blk-mq.c:376 [inline]
 [<ffffffff81d243c5>] __blk_mq_complete_request+0x205/0x4b0 block/blk-mq.c:388
 [<ffffffff81d246d5>] blk_mq_complete_request+0x65/0x80 block/blk-mq.c:407
 [<ffffffff825d2afe>] scsi_mq_done+0xce/0x320 drivers/scsi/scsi_lib.c:1877
 [<ffffffff825fd3af>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:211
 [<ffffffff825fb069>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:229
 [<ffffffff825fb1b7>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:244
 [<ffffffff81fdfa69>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:909
 [<ffffffff8126cdbf>] __handle_irq_event_percpu+0xef/0x800 kernel/irq/handle.c:145
 [<ffffffff8126d544>] handle_irq_event_percpu+0x74/0x150 kernel/irq/handle.c:185
 [<ffffffff8126d6c7>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:202
 [<ffffffff81277d3a>] handle_edge_irq+0x1fa/0x8e0 kernel/irq/chip.c:665
 [<ffffffff8105a5de>] generic_handle_irq_desc include/linux/irqdesc.h:150 [inline]
 [<ffffffff8105a5de>] handle_irq+0x24e/0x3b0 arch/x86/kernel/irq_64.c:76
 [<ffffffff838b3469>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff838b1520>] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:548
 <EOI> 
 [<ffffffff81547e02>] __do_huge_pmd_anonymous_page mm/huge_memory.c:558 [inline]
 [<ffffffff81547e02>] do_huge_pmd_anonymous_page+0x6c2/0x10d0 mm/huge_memory.c:700
 [<ffffffff814ced2b>] create_huge_pmd mm/memory.c:3403 [inline]
 [<ffffffff814ced2b>] __handle_mm_fault mm/memory.c:3553 [inline]
 [<ffffffff814ced2b>] handle_mm_fault+0x158b/0x2530 mm/memory.c:3614
 [<ffffffff810dd632>] __do_page_fault+0x5c2/0xd40 arch/x86/mm/fault.c:1406
 [<ffffffff810dddd7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff838b1dc8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1038
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: 3334 Comm: syzkaller247132 Not tainted 4.9.75-gb54d99a #18
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c9b9e000 task.stack: ffff8801c8770000
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144dbc1>]  [<ffffffff8144dbc1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
RSP: 0018:ffff8801c8777940  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266631b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c
RBP: ffff8801c8777950 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8801c9b9e000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801bdd72100 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009b6f840
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020536000 CR3: 00000001c88b8000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801c9b9e000 ffff8801bdd72258 ffff8801c87779b0 ffffffff82666341
 ffff8801bdd72270 ffffed0037bae44b ffffed0037bae44e ffff8801bdd72268
 dead4ead00000000 ffff8801bdd72240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82666341>] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff82666705>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff826667c9>] sg_new_read.isra.20+0x39/0x3e0 drivers/scsi/sg.c:567
 [<ffffffff826683bd>] sg_read+0x8bd/0x1440 drivers/scsi/sg.c:456
 [<ffffffff8156b481>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff815703a2>] do_loop_readv_writev fs/read_write.c:1105 [inline]
 [<ffffffff815703a2>] compat_do_readv_writev+0x522/0x760 fs/read_write.c:1099
 [<ffffffff815706c3>] compat_readv+0xe3/0x150 fs/read_write.c:1128
 [<ffffffff81570824>] do_compat_readv+0xf4/0x1d0 fs/read_write.c:1148
 [<ffffffff81572d96>] C_SYSC_readv fs/read_write.c:1160 [inline]
 [<ffffffff81572d96>] compat_SyS_readv+0x26/0x30 fs/read_write.c:1156
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838b2334>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127
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  [<ffffffff8144dbc1>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144dbc1>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144dbc1>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144dbc1>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144dbc1>] __free_pages+0x21/0x80 mm/page_alloc.c:3903
 RSP <ffff8801c8777940>
---[ end trace afabfd5f48ab9cf2 ]---