kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
BUG: spinlock bad magic on CPU#1, modprobe/6501
 lock: 0xffff8801d79ac218, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 6501 Comm: modprobe Not tainted 4.9.80-g8a174b47 #39
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db307898 ffffffff81d94be9 ffff8801d79ac218 ffff8801d77b0000
 0000000000000001 0000000000000001 0000000000000000 ffff8801db3078d8
 ffffffff8124897d ffffffff81223cbe 0000000000000000 0000000000000000
Call Trace:
 <IRQ> 
 [<ffffffff81d94be9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94be9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8124897d>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81248cb4>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81248cb4>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81248cb4>] do_raw_spin_lock+0x174/0x1e0 kernel/locking/spinlock_debug.c:112
 [<ffffffff838b3316>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff838b3316>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff81223cbe>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff8266befc>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1375
 [<ffffffff81d24344>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:331
 [<ffffffff825d1475>] scsi_end_request+0x135/0x5c0 drivers/scsi/scsi_lib.c:627
 [<ffffffff825db0ae>] scsi_io_completion+0x15de/0x1730 drivers/scsi/scsi_lib.c:829
 [<ffffffff825bdad8>] scsi_finish_command+0x3b8/0x530 drivers/scsi/scsi.c:607
 [<ffffffff825d8780>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1567
 [<ffffffff81d25f65>] blk_mq_ipi_complete_request block/blk-mq.c:376 [inline]
 [<ffffffff81d25f65>] __blk_mq_complete_request+0x205/0x4b0 block/blk-mq.c:388
 [<ffffffff81d26275>] blk_mq_complete_request+0x65/0x80 block/blk-mq.c:407
 [<ffffffff825d48ce>] scsi_mq_done+0xce/0x320 drivers/scsi/scsi_lib.c:1877
 [<ffffffff825ff17f>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:211
 [<ffffffff825fce39>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:229
 [<ffffffff825fcf87>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:244
 [<ffffffff81fe16f9>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:909
 [<ffffffff8126e04f>] __handle_irq_event_percpu+0xef/0x800 kernel/irq/handle.c:145
 [<ffffffff8126e7d4>] handle_irq_event_percpu+0x74/0x150 kernel/irq/handle.c:185
 [<ffffffff8126e957>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:202
 [<ffffffff81278fca>] 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
 [<ffffffff838b5ee9>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff838b3fa0>] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:565
 <EOI> 
 [<ffffffff815b9c37>] __d_drop+0xd7/0x3a0 fs/dcache.c:481
 [<ffffffff815ba122>] __dentry_kill+0x132/0x480 fs/dcache.c:560
 [<ffffffff815be233>] dentry_kill fs/dcache.c:606 [inline]
 [<ffffffff815be233>] dput.part.23+0x4f3/0x7b0 fs/dcache.c:818
 [<ffffffff815be50f>] dput+0x1f/0x30 fs/dcache.c:780
 [<ffffffff815758ea>] __fput+0x46a/0x6e0 fs/file_table.c:226
 [<ffffffff81575be5>] ____fput+0x15/0x20 fs/file_table.c:244
 [<ffffffff811957d5>] task_work_run+0x115/0x190 kernel/task_work.c:116
 [<ffffffff81003a4c>] tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 [<ffffffff81003a4c>] exit_to_usermode_loop+0xfc/0x120 arch/x86/entry/common.c:160
 [<ffffffff81006340>] prepare_exit_to_usermode arch/x86/entry/common.c:190 [inline]
 [<ffffffff81006340>] syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259
 [<ffffffff838b35ab>] entry_SYSCALL_64_fastpath+0xe6/0xe8
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 6495 Comm: syz-executor0 Not tainted 4.9.80-g8a174b47 #39
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d6e23000 task.stack: ffff8801d6d10000
RIP: 0010:[<ffffffff8144ef01>]  [<ffffffff8144ef01>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144ef01>]  [<ffffffff8144ef01>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144ef01>]  [<ffffffff8144ef01>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144ef01>]  [<ffffffff8144ef01>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144ef01>]  [<ffffffff8144ef01>] __free_pages+0x21/0x80 mm/page_alloc.c:3897
RSP: 0018:ffff8801d6d17a50  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff826680eb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801d6d17a60 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801c1d50000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6f0fb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000844f440 CR3: 00000001c9d66000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff8801d6e23000 ffff8801c1d50158 ffff8801d6d17ac0 ffffffff82668111
 ffff8801c1d50170 ffffed00383aa02b ffffed00383aa02e ffff8801c1d50168
 dead4ead00000000 ffff8801c1d50140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff82668111>] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1944
 [<ffffffff826684d5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1825
 [<ffffffff82668599>] sg_new_read.isra.20+0x39/0x3e0 drivers/scsi/sg.c:566
 [<ffffffff8266a207>] sg_read+0x8b7/0x1440 drivers/scsi/sg.c:455
 [<ffffffff8156c0c3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156fe5e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81573b89>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81573b89>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<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
 [<ffffffff838b4db4>] 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  [<ffffffff8144ef01>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144ef01>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144ef01>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144ef01>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144ef01>] __free_pages+0x21/0x80 mm/page_alloc.c:3897
 RSP <ffff8801d6d17a50>
---[ end trace f6576b7af9c9152b ]---