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, swapper/1/0
 lock: 0xffff8801c8644218, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db307898 ffffffff81d906e9 ffff8801c8644218 ffff8801da29b000
 0000000000000001 0000000000000001 0000000000000000 ffff8801db3078d8
 ffffffff81245eed ffffffff8122122e 0000000000000000 0000000000000000
Call Trace:
 <IRQ> 
 [<ffffffff81d906e9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d906e9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81245eed>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81246224>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81246224>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81246224>] do_raw_spin_lock+0x174/0x1e0 kernel/locking/spinlock_debug.c:112
 [<ffffffff838a97f6>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff838a97f6>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8122122e>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff8266349c>] sg_rq_end_io+0x5dc/0xbb0 drivers/scsi/sg.c:1386
 [<ffffffff81d1ff14>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:331
 [<ffffffff825c8c25>] scsi_end_request+0x135/0x5c0 drivers/scsi/scsi_lib.c:627
 [<ffffffff825d285e>] scsi_io_completion+0x15de/0x1730 drivers/scsi/scsi_lib.c:829
 [<ffffffff825b5288>] scsi_finish_command+0x3b8/0x530 drivers/scsi/scsi.c:607
 [<ffffffff825cff30>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1567
 [<ffffffff81d22e15>] blk_mq_ipi_complete_request block/blk-mq.c:376 [inline]
 [<ffffffff81d22e15>] __blk_mq_complete_request+0x205/0x4b0 block/blk-mq.c:388
 [<ffffffff81d23125>] blk_mq_complete_request+0x65/0x80 block/blk-mq.c:407
 [<ffffffff825cc07e>] scsi_mq_done+0xce/0x320 drivers/scsi/scsi_lib.c:1877
 [<ffffffff825f68ff>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:211
 [<ffffffff825f45c9>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:229
 [<ffffffff825f4717>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:244
 [<ffffffff81fd9439>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:909
 [<ffffffff8126b5af>] __handle_irq_event_percpu+0xef/0x800 kernel/irq/handle.c:145
 [<ffffffff8126bd34>] handle_irq_event_percpu+0x74/0x150 kernel/irq/handle.c:185
 [<ffffffff8126beb7>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:202
 [<ffffffff8127651a>] 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
 [<ffffffff838abf19>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff838aa34c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520
 <EOI> 
 [<ffffffff838a7c35>] arch_safe_halt arch/x86/include/asm/paravirt.h:103 [inline]
 [<ffffffff838a7c35>] default_idle+0x55/0x360 arch/x86/kernel/process.c:295
 [<ffffffff8106baca>] arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:286
 [<ffffffff838a8a46>] default_idle_call+0x36/0x60 kernel/sched/idle.c:97
 [<ffffffff81223bd0>] cpuidle_idle_call kernel/sched/idle.c:155 [inline]
 [<ffffffff81223bd0>] cpu_idle_loop kernel/sched/idle.c:248 [inline]
 [<ffffffff81223bd0>] cpu_startup_entry+0x2b0/0x380 kernel/sched/idle.c:303
 [<ffffffff810af403>] start_secondary+0x303/0x3e0 arch/x86/kernel/smpboot.c:263
IPVS: length: 24 != 8
IPVS: length: 24 != 8
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 5741 Comm: syz-executor4 Not tainted 4.9.67-gf26d3c7 #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801c5514800 task.stack: ffff8801cfe80000
RIP: 0010:[<ffffffff8144bc11>]  [<ffffffff8144bc11>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144bc11>]  [<ffffffff8144bc11>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144bc11>]  [<ffffffff8144bc11>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144bc11>]  [<ffffffff8144bc11>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144bc11>]  [<ffffffff8144bc11>] __free_pages+0x21/0x80 mm/page_alloc.c:3910
RSP: 0018:ffff8801cfe87b00  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffc9000184d000
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801cfe87b10 R08: ffffed003486b5a8 R09: ffff8801a435ad20
R10: 0000000000000005 R11: ffffed003486b5a8 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801c8642100 R15: dffffc0000000000
FS:  00007fd3fad9d700(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000463610 CR3: 00000001d6b2c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8801c8642258 ffff8801cfe87b70 ffffffff8265f731
 ffff8801c8642270 ffffed00390c844b ffffed00390c844e ffff8801c8642268
 dead4ead00000000 ffff8801c8642240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff8265f731>] sg_remove_scat.isra.20+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff8265faf5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1836
 [<ffffffff8266190c>] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527
 [<ffffffff815680d3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156be6e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff8156fb99>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff8156fb99>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838a9985>] entry_SYSCALL_64_fastpath+0x23/0xc6
Code: ff 66 0f 1f 84 00 00 00 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  [<ffffffff8144bc11>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144bc11>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144bc11>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144bc11>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144bc11>] __free_pages+0x21/0x80 mm/page_alloc.c:3910
 RSP <ffff8801cfe87b00>
---[ end trace 0286812d5fd5e2c1 ]---