kasan: CONFIG_KASAN_INLINE enabled
BUG: spinlock bad magic on CPU#0, syzkaller154332/3329
 lock: 0xffff8800b51f8018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 0 PID: 3329 Comm: syzkaller154332 Not tainted 4.4.111-g3301b55 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 1c34afb5065735e7 ffff8801db2078d8 ffffffff81d0509d
 ffff8800b51f8018 ffff8800b47c8000 0000000000000001 0000000000000001
 0000000000000000 ffff8801db207918 ffffffff81245acd 0000000000000000
Call Trace:
 <IRQ>  [<ffffffff81d0509d>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ>  [<ffffffff81d0509d>] 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
 [<ffffffff83775476>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff83775476>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8121e88e>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff825bd53c>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1396
 [<ffffffff81c99de4>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:311
 [<ffffffff82525295>] scsi_end_request+0x135/0x5b0 drivers/scsi/scsi_lib.c:716
 [<ffffffff8252e4e3>] scsi_io_completion+0x15c3/0x1710 drivers/scsi/scsi_lib.c:918
 [<ffffffff825119ff>] scsi_finish_command+0x3af/0x520 drivers/scsi/scsi.c:607
 [<ffffffff8252bbe0>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1654
 [<ffffffff81c9c045>] blk_mq_ipi_complete_request block/blk-mq.c:356 [inline]
 [<ffffffff81c9c045>] __blk_mq_complete_request+0x205/0x500 block/blk-mq.c:368
 [<ffffffff81c9c39b>] blk_mq_complete_request+0x5b/0x70 block/blk-mq.c:387
 [<ffffffff825288bb>] scsi_mq_done+0xfb/0x3c0 drivers/scsi/scsi_lib.c:1964
 [<ffffffff825517af>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:210
 [<ffffffff8254f4c9>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:228
 [<ffffffff8254f617>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:243
 [<ffffffff81f2d9f9>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:722
 [<ffffffff8126d2a1>] handle_irq_event_percpu+0xf1/0x960 kernel/irq/handle.c:146
 [<ffffffff8126dbb7>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:194
 [<ffffffff8127793a>] handle_edge_irq+0x1fa/0x8e0 kernel/irq/chip.c:623
 [<ffffffff81016900>] generic_handle_irq_desc include/linux/irqdesc.h:140 [inline]
 [<ffffffff81016900>] handle_irq+0x250/0x3a0 arch/x86/kernel/irq_64.c:78
 [<ffffffff83778359>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff83776420>] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:580
 <EOI>  [<ffffffff81d2fdd7>] ? clear_page_c_e+0x7/0x10 arch/x86/lib/clear_page_64.S:51
 [<ffffffff8150d400>] __do_huge_pmd_anonymous_page mm/huge_memory.c:739 [inline]
 [<ffffffff8150d400>] do_huge_pmd_anonymous_page+0x270/0xa10 mm/huge_memory.c:867
 [<ffffffff814a1c0a>] create_huge_pmd mm/memory.c:3242 [inline]
 [<ffffffff814a1c0a>] __handle_mm_fault mm/memory.c:3361 [inline]
 [<ffffffff814a1c0a>] handle_mm_fault+0x271a/0x3190 mm/memory.c:3455
 [<ffffffff810dc6bb>] __do_page_fault+0x35b/0xa00 arch/x86/mm/fault.c:1245
 [<ffffffff810dcd87>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1308
 [<ffffffff83776cc8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1021
kasan: CONFIG_KASAN_INLINE enabledkasan: GPF could be caused by NULL-ptr deref or user memory accessgeneral protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3326 Comm: syzkaller154332 Not tainted 4.4.111-g3301b55 #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800b556c740 task.stack: ffff8800b4160000
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:ffff8800b41679f0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b9ebb
RDX: 1bd5a9d5a0000003 RSI: 0000000000000002 RDI: dead4ead0000001c
RBP: ffff8800b4167a00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffff1001682cf1e R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800b51fa100 R15: dffffc0000000000
FS:  0000000001703940(0063) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020bb7000 CR3: 00000000b4470000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8800b51fa258 ffff8800b4167a60 ffffffff825b9ee1
 ffff8800b51fa270 ffffed0016a3f44b ffffed0016a3f44e ffff8800b51fa268
 dead4ead00000000 ffff8800b51fa240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b9ee1>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1964
 [<ffffffff825ba2a5>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1846
 [<ffffffff825ba369>] sg_new_read.isra.18+0x39/0x3c0 drivers/scsi/sg.c:578
 [<ffffffff825bbf62>] sg_read+0x8c2/0x1490 drivers/scsi/sg.c:467
 [<ffffffff8151cc51>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8151efad>] do_readv_writev+0x5dd/0x6e0 fs/read_write.c:810
 [<ffffffff8151f128>] vfs_readv+0x78/0xb0 fs/read_write.c:834
 [<ffffffff81521479>] SYSC_readv fs/read_write.c:860 [inline]
 [<ffffffff81521479>] SyS_readv+0xd9/0x240 fs/read_write.c:852
 [<ffffffff83775899>] entry_SYSCALL_64_fastpath+0x16/0x92
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 <ffff8800b41679f0>
---[ end trace 0aec9e24b4889190 ]---