sg_write: data in/out 1421760218/185 bytes for SCSI command 0x71-- guessing data in;
   program syz-executor6 not setting count and/or reply_len properly
kasan: CONFIG_KASAN_INLINE enabled[   47.686335] BUG: spinlock bad magic on CPU#1, syz-executor6/6330
 lock: 0xffff8801d836c218, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 6330 Comm: syz-executor6 Not tainted 4.4.118-g239a415 #26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 13ecfe95897b7ff0 ffff8801db3078d8 ffffffff81d0402d
 ffff8801d836c218 ffff8800a75d9800 0000000000000001 0000000000000001
 0000000000000000 ffff8801db307918 ffffffff81246aad ffff8800b78cd680
Call Trace:
 <IRQ>  [<ffffffff81d0402d>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ>  [<ffffffff81d0402d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81246aad>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81246e98>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81246e98>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81246e98>] do_raw_spin_lock+0x228/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff83772636>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff83772636>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8121f7ee>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff825bbc4c>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1385
 [<ffffffff81c98de4>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:311
 [<ffffffff825239a5>] scsi_end_request+0x135/0x5b0 drivers/scsi/scsi_lib.c:716
 [<ffffffff8252cbf3>] scsi_io_completion+0x15c3/0x1710 drivers/scsi/scsi_lib.c:918
 [<ffffffff8251012f>] scsi_finish_command+0x3af/0x520 drivers/scsi/scsi.c:607
 [<ffffffff8252a2f0>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1654
 [<ffffffff81c9b045>] blk_mq_ipi_complete_request block/blk-mq.c:356 [inline]
 [<ffffffff81c9b045>] __blk_mq_complete_request+0x205/0x500 block/blk-mq.c:368
 [<ffffffff81c9b39b>] blk_mq_complete_request+0x5b/0x70 block/blk-mq.c:387
 [<ffffffff82526fcb>] scsi_mq_done+0xfb/0x3c0 drivers/scsi/scsi_lib.c:1964
 [<ffffffff8254febf>] virtscsi_complete_cmd+0x5cf/0x7f0 drivers/scsi/virtio_scsi.c:210
 [<ffffffff8254dbd9>] virtscsi_vq_done+0xc9/0x170 drivers/scsi/virtio_scsi.c:228
 [<ffffffff8254dd27>] virtscsi_req_done+0xa7/0xd0 drivers/scsi/virtio_scsi.c:243
 [<ffffffff81f2ca89>] vring_interrupt+0x109/0x150 drivers/virtio/virtio_ring.c:722
 [<ffffffff8126e271>] handle_irq_event_percpu+0xf1/0x960 kernel/irq/handle.c:146
 [<ffffffff8126eb87>] handle_irq_event+0xa7/0x140 kernel/irq/handle.c:194
 [<ffffffff812788ea>] 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
 [<ffffffff83775519>] do_IRQ+0x89/0x1b0 arch/x86/kernel/irq.c:239
 [<ffffffff837735e0>] common_interrupt+0xa0/0xa0 arch/x86/entry/entry_64.S:592
 <EOI>  [<ffffffff81269de0>] ? console_cont_flush kernel/printk/printk.c:2217 [inline]
 <EOI>  [<ffffffff81269de0>] ? console_unlock+0x790/0xa00 kernel/printk/printk.c:2265
 [<ffffffff8126a5ae>] vprintk_emit+0x55e/0x850 kernel/printk/printk.c:1832
 [<ffffffff8126a8c8>] vprintk+0x28/0x30 kernel/printk/printk.c:1843
 [<ffffffff8126a8ed>] vprintk_default+0x1d/0x30 kernel/printk/printk.c:1844
 [<ffffffff8141b73d>] printk+0xb7/0xe2 kernel/printk/printk.c:1922
 [<ffffffff810f0d51>] kasan_die_handler+0x31/0x40 arch/x86/mm/kasan_init_64.c:58
 [<ffffffff81194025>] notifier_call_chain+0x95/0x1b0 kernel/notifier.c:93
 [<ffffffff8119564b>] __atomic_notifier_call_chain kernel/notifier.c:183 [inline]
 [<ffffffff8119564b>] atomic_notifier_call_chain+0x7b/0x140 kernel/notifier.c:193
 [<ffffffff811957ef>] notify_die+0xdf/0x160 kernel/notifier.c:549
 [<ffffffff81011fa7>] do_general_protection+0x2f7/0x390 arch/x86/kernel/traps.c:461
 [<ffffffff83773e28>] general_protection+0x28/0x30 arch/x86/entry/entry_64.S:1032
 [<ffffffff825b8581>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff825b8945>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1835
 [<ffffffff825ba7cb>] sg_read+0xa1b/0x1490 drivers/scsi/sg.c:537
 [<ffffffff8151d7c1>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8152035f>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520539>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff815228a8>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff815228a8>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff837743ea>] sysenter_flags_fixed+0xd/0x17
kasan: 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: 6330 Comm: syz-executor6 Not tainted 4.4.118-g239a415 #26
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8800a75d9800 task.stack: ffff8801c4470000
RIP: 0010:[<ffffffff814346c1>]  [<ffffffff814346c1>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff814346c1>]  [<ffffffff814346c1>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff814346c1>]  [<ffffffff814346c1>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff814346c1>]  [<ffffffff814346c1>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8801c44779c0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825b855b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
RBP: ffff8801c44779d0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 1ffff1003888ef16 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801d8260000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6f2ab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f6f5cc10 CR3: 00000001cb3b0000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000246 ffff8801d8260158 ffff8801c4477a30 ffffffff825b8581
 ffff8801d8260170 ffffed003b04c02b ffffed003b04c02e ffff8801d8260168
 dead4ead00000000 ffff8801d8260140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825b8581>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1954
 [<ffffffff825b8945>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1835
 [<ffffffff825ba7cb>] sg_read+0xa1b/0x1490 drivers/scsi/sg.c:537
 [<ffffffff8151d7c1>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff8152035f>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520539>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff815228a8>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff815228a8>] compat_SyS_readv+0xd8/0x1b0 fs/read_write.c:1022
 [<ffffffff81006d91>] do_syscall_32_irqs_on arch/x86/entry/common.c:392 [inline]
 [<ffffffff81006d91>] do_fast_syscall_32+0x321/0x8a0 arch/x86/entry/common.c:459
 [<ffffffff837743ea>] sysenter_flags_fixed+0xd/0x17
Code: c6 a0 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  [<ffffffff814346c1>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff814346c1>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff814346c1>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff814346c1>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8801c44779c0>
---[ end trace 3c8355e677a1f539 ]---