kasan: CONFIG_KASAN_INLINE enabled[   41.995837] BUG: spinlock bad magic on CPU#1, syz-executor1/5844
 lock: 0xffff8801c8118018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 5844 Comm: syz-executor1 Not tainted 4.4.124-g49632c6 #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 0000000000000000 6432583382067097 ffff8800bb076f38 ffffffff81d0663d
 ffff8801c8118018 ffff8801d3700000 0000000000000001 0000000000000001
 0000000000000000 ffff8800bb076f78 ffffffff81246e0d 0000000000000000
Call Trace:
 [<ffffffff81d0663d>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d0663d>] dump_stack+0xc1/0x124 lib/dump_stack.c:51
 [<ffffffff81246e0d>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff812471f8>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff812471f8>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff812471f8>] do_raw_spin_lock+0x228/0x2c0 kernel/locking/spinlock_debug.c:135
 [<ffffffff837793c6>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff837793c6>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff8121fb4e>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff825be81c>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1389
 [<ffffffff81c9b404>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:311
 [<ffffffff82526455>] scsi_end_request+0x135/0x5b0 drivers/scsi/scsi_lib.c:716
 [<ffffffff8252f6a3>] scsi_io_completion+0x15c3/0x1710 drivers/scsi/scsi_lib.c:918
 [<ffffffff82512bdf>] scsi_finish_command+0x3af/0x520 drivers/scsi/scsi.c:607
 [<ffffffff8252cda0>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1654
 [<ffffffff81c9d665>] blk_mq_ipi_complete_request block/blk-mq.c:356 [inline]
 [<ffffffff81c9d665>] __blk_mq_complete_request+0x205/0x500 block/blk-mq.c:368
 [<ffffffff81c9d9bb>] blk_mq_complete_request+0x5b/0x70 block/blk-mq.c:387
 [<ffffffff82529a7b>] scsi_mq_done+0xfb/0x3c0 drivers/scsi/scsi_lib.c:1964
 [<ffffffff82524780>] scsi_dispatch_cmd+0x2b0/0xae0 drivers/scsi/scsi_lib.c:1735
 [<ffffffff825290f9>] scsi_queue_rq+0x1179/0x1a00 drivers/scsi/scsi_lib.c:2011
 [<ffffffff81c9f389>] __blk_mq_run_hw_queue+0x739/0xcd0 block/blk-mq.c:779
 [<ffffffff81c9ebb3>] blk_mq_run_hw_queue+0xf3/0x190 block/blk-mq.c:867
 [<ffffffff81ca5cc1>] blk_mq_insert_request+0x261/0x320 block/blk-mq.c:1015
 [<ffffffff81c8ce43>] blk_execute_rq_nowait+0x123/0x310 block/blk-exec.c:68
 [<ffffffff825c27c5>] sg_common_write.isra.20+0xca5/0x18f0 drivers/scsi/sg.c:819
 [<ffffffff825c39d1>] sg_new_write.isra.23+0x5c1/0x920 drivers/scsi/sg.c:757
 [<ffffffff825c542b>] sg_ioctl+0x16fb/0x2a00 drivers/scsi/sg.c:903
 [<ffffffff8155a58a>] vfs_ioctl fs/ioctl.c:43 [inline]
 [<ffffffff8155a58a>] do_vfs_ioctl+0x7aa/0xee0 fs/ioctl.c:607
 [<ffffffff8155ad4f>] SYSC_ioctl fs/ioctl.c:622 [inline]
 [<ffffffff8155ad4f>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:613
 [<ffffffff81620d48>] sg_ioctl_trans fs/compat_ioctl.c:352 [inline]
 [<ffffffff81620d48>] do_ioctl_trans fs/compat_ioctl.c:1454 [inline]
 [<ffffffff81620d48>] C_SYSC_ioctl fs/compat_ioctl.c:1605 [inline]
 [<ffffffff81620d48>] compat_SyS_ioctl+0x2178/0x2540 fs/compat_ioctl.c:1544
 [<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
 [<ffffffff8377b16a>] 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: 5839 Comm: syz-executor2 Not tainted 4.4.124-g49632c6 #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d954b000 task.stack: ffff8800ac548000
RIP: 0010:[<ffffffff81434eb1>]  [<ffffffff81434eb1>] __read_once_size include/linux/compiler.h:218 [inline]
RIP: 0010:[<ffffffff81434eb1>]  [<ffffffff81434eb1>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:[<ffffffff81434eb1>]  [<ffffffff81434eb1>] put_page_testzero include/linux/mm.h:357 [inline]
RIP: 0010:[<ffffffff81434eb1>]  [<ffffffff81434eb1>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
RSP: 0018:ffff8800ac54f9c0  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff825bb03b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000000 RDI: dead4ead0000001c
RBP: ffff8800ac54f9d0 R08: ffffed003a45cbc0 R09: 0000000000000000
R10: 0000000000000000 R11: ffffed003a45cbc0 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8800ae118000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6f4fb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f6f1edb0 CR3: 00000000b4d5e000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000000 ffff8800ae118158 ffff8800ac54fa30 ffffffff825bb061
 ffff8800ae118170 ffffed0015c2302b ffffed0015c2302e ffff8800ae118168
 dead4ead00000000 ffff8800ae118140 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff825bb061>] sg_remove_scat.isra.17+0x1c1/0x2d0 drivers/scsi/sg.c:1956
 [<ffffffff825bb416>] sg_finish_rem_req+0x2a6/0x320 drivers/scsi/sg.c:1839
 [<ffffffff825bd302>] sg_read+0xa32/0x14d0 drivers/scsi/sg.c:537
 [<ffffffff8151dfb1>] do_loop_readv_writev+0x141/0x1e0 fs/read_write.c:680
 [<ffffffff81520b4f>] compat_do_readv_writev+0x5df/0x6e0 fs/read_write.c:984
 [<ffffffff81520d29>] compat_readv+0xd9/0x140 fs/read_write.c:1013
 [<ffffffff81523098>] C_SYSC_readv fs/read_write.c:1033 [inline]
 [<ffffffff81523098>] 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
 [<ffffffff8377b16a>] 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  [<ffffffff81434eb1>] __read_once_size include/linux/compiler.h:218 [inline]
RIP  [<ffffffff81434eb1>] atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP  [<ffffffff81434eb1>] put_page_testzero include/linux/mm.h:357 [inline]
RIP  [<ffffffff81434eb1>] __free_pages+0x21/0x90 mm/page_alloc.c:3365
 RSP <ffff8800ac54f9c0>
---[ end trace df7a25f1b930eed1 ]---