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, syz-executor6/5606
 lock: 0xffff8801b4740018, .magic: dead4eac, .owner: <none>/-1, .owner_cpu: -1
CPU: 1 PID: 5606 Comm: syz-executor6 Not tainted 4.9.82-g7ec482b #46
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801b367f1a0 ffffffff81d94fc9 ffff8801b4740018 ffff8801b2771800
 0000000000000001 0000000000000001 0000000000000000 ffff8801b367f1e0
 ffffffff81248aad ffffffff81223dee 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff81d94fc9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d94fc9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81248aad>] spin_dump+0x14d/0x280 kernel/locking/spinlock_debug.c:67
 [<ffffffff81248de4>] spin_bug kernel/locking/spinlock_debug.c:75 [inline]
 [<ffffffff81248de4>] debug_spin_lock_before kernel/locking/spinlock_debug.c:83 [inline]
 [<ffffffff81248de4>] do_raw_spin_lock+0x174/0x1e0 kernel/locking/spinlock_debug.c:112
 [<ffffffff838b4ce6>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline]
 [<ffffffff838b4ce6>] _raw_spin_lock_irqsave+0x56/0x70 kernel/locking/spinlock.c:159
 [<ffffffff81223dee>] __wake_up+0x1e/0x50 kernel/sched/wait.c:94
 [<ffffffff8266c48c>] sg_rq_end_io+0x5dc/0xbc0 drivers/scsi/sg.c:1375
 [<ffffffff81d246d4>] __blk_mq_end_request+0x54/0xc0 block/blk-mq.c:331
 [<ffffffff825d1a05>] scsi_end_request+0x135/0x5c0 drivers/scsi/scsi_lib.c:627
 [<ffffffff825db63e>] scsi_io_completion+0x15de/0x1730 drivers/scsi/scsi_lib.c:829
 [<ffffffff825be068>] scsi_finish_command+0x3b8/0x530 drivers/scsi/scsi.c:607
 [<ffffffff825d8d10>] scsi_softirq_done+0x250/0x350 drivers/scsi/scsi_lib.c:1567
 [<ffffffff81d262f5>] blk_mq_ipi_complete_request block/blk-mq.c:376 [inline]
 [<ffffffff81d262f5>] __blk_mq_complete_request+0x205/0x4b0 block/blk-mq.c:388
 [<ffffffff81d26605>] blk_mq_complete_request+0x65/0x80 block/blk-mq.c:407
 [<ffffffff825d4e5e>] scsi_mq_done+0xce/0x320 drivers/scsi/scsi_lib.c:1877
 [<ffffffff825d02e1>] scsi_dispatch_cmd+0x2b1/0x990 drivers/scsi/scsi_lib.c:1648
 [<ffffffff825d4510>] scsi_queue_rq+0x1170/0x19f0 drivers/scsi/scsi_lib.c:1924
 [<ffffffff81d2aac4>] __blk_mq_run_hw_queue+0x854/0xe30 block/blk-mq.c:826
 [<ffffffff81d2a1ee>] blk_mq_run_hw_queue+0x13e/0x1c0 block/blk-mq.c:911
 [<ffffffff81d2f2d0>] blk_mq_insert_request+0x240/0x5c0 block/blk-mq.c:1053
 [<ffffffff81d16f1c>] blk_execute_rq_nowait+0x12c/0x320 block/blk-exec.c:68
 [<ffffffff8266fcc3>] sg_common_write.isra.23+0xcb3/0x18c0 drivers/scsi/sg.c:805
 [<ffffffff826742cb>] sg_write+0x6bb/0xb40 drivers/scsi/sg.c:679
 [<ffffffff8156e663>] __vfs_write+0x103/0x680 fs/read_write.c:510
 [<ffffffff81570349>] vfs_write+0x189/0x530 fs/read_write.c:560
 [<ffffffff81573e39>] SYSC_write fs/read_write.c:607 [inline]
 [<ffffffff81573e39>] SyS_write+0xd9/0x1b0 fs/read_write.c:599
 [<ffffffff81006f97>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81006f97>] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387
 [<ffffffff838b6574>] entry_SYSENTER_compat+0x74/0x83 arch/x86/entry/entry_64_compat.S:127
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 5597 Comm: syz-executor0 Not tainted 4.9.82-g7ec482b #46
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801b6490000 task.stack: ffff8801b6498000
RIP: 0010:[<ffffffff8144f001>]  [<ffffffff8144f001>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff8144f001>]  [<ffffffff8144f001>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP: 0010:[<ffffffff8144f001>]  [<ffffffff8144f001>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP: 0010:[<ffffffff8144f001>]  [<ffffffff8144f001>] put_page_testzero include/linux/mm.h:450 [inline]
RIP: 0010:[<ffffffff8144f001>]  [<ffffffff8144f001>] __free_pages+0x21/0x80 mm/page_alloc.c:3897
RSP: 0018:ffff8801b649fa50  EFLAGS: 00010a07
RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff8266867b
RDX: 1bd5a9d5a0000003 RSI: 0000000000000001 RDI: dead4ead0000001c
RBP: ffff8801b649fa60 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8801b6490000 R12: 0000000000000004
R13: 0000000000000020 R14: ffff8801d47a2100 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f6f67b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000000844f24c CR3: 00000001d3f40000 CR4: 0000000000160670
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000001 ffff8801d47a2258 ffff8801b649fac0 ffffffff826686a1
 ffff8801d47a2270 ffffed003a8f444b ffffed003a8f444e ffff8801d47a2268
 dead4ead00000000 ffff8801d47a2240 0000000000000000 0000000000000000
Call Trace:
 [<ffffffff826686a1>] sg_remove_scat.isra.19+0x1c1/0x2d0 drivers/scsi/sg.c:1944
 [<ffffffff82668a65>] sg_finish_rem_req+0x2b5/0x340 drivers/scsi/sg.c:1825
 [<ffffffff82668e46>] sg_new_read.isra.20+0x356/0x3e0 drivers/scsi/sg.c:566
 [<ffffffff8266a797>] sg_read+0x8b7/0x1440 drivers/scsi/sg.c:455
 [<ffffffff8156c1c3>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156ff5e>] vfs_read+0x11e/0x380 fs/read_write.c:475
 [<ffffffff81573c89>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff81573c89>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff81006f97>] do_syscall_32_irqs_on arch/x86/entry/common.c:325 [inline]
 [<ffffffff81006f97>] do_fast_syscall_32+0x2f7/0x870 arch/x86/entry/common.c:387
 [<ffffffff838b6574>] 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  [<ffffffff8144f001>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff8144f001>] atomic_read arch/x86/include/asm/atomic.h:26 [inline]
RIP  [<ffffffff8144f001>] page_ref_count include/linux/page_ref.h:66 [inline]
RIP  [<ffffffff8144f001>] put_page_testzero include/linux/mm.h:450 [inline]
RIP  [<ffffffff8144f001>] __free_pages+0x21/0x80 mm/page_alloc.c:3897
 RSP <ffff8801b649fa50>
---[ end trace f86d41a77cffced5 ]---