==================================================================
BUG: KASAN: slab-out-of-bounds in __lock_acquire+0x2eff/0x3640 kernel/locking/lockdep.c:3224 at addr ffff8801c895bf78
Read of size 8 by task syz-executor4/8532
CPU: 1 PID: 8532 Comm: syz-executor4 Not tainted 4.9.60-gdfe0a9b #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c4bcf810 ffffffff81d91389 ffff8801d77fd500 ffff8801c895bf00
 ffff8801c895bf60 ffffed003912b7ef ffff8801c895bf78 ffff8801c4bcf838
 ffffffff8153c1bc ffffed003912b7ef ffff8801d77fd500 0000000000000000
Call Trace:
 [<ffffffff81d91389>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d91389>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153c1bc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153c47c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153c47c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153c47c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153c819>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153c819>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff8123e9ef>] __lock_acquire+0x2eff/0x3640 kernel/locking/lockdep.c:3224
 [<ffffffff8123fb6e>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aa25e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aa25e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265f840>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff8265fe55>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff82661b8c>] sg_read+0x91c/0x1400 drivers/scsi/sg.c:527
 [<ffffffff8156c793>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156dd27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815719c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815719c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838aa305>] entry_SYSCALL_64_fastpath+0x23/0xc6
Object at ffff8801c895bf00, in cache fasync_cache size: 96
Allocated:
PID = 8532
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537
 slab_post_alloc_hook mm/slab.h:417 [inline]
 slab_alloc_node mm/slub.c:2715 [inline]
 slab_alloc mm/slub.c:2723 [inline]
 kmem_cache_alloc+0xba/0x290 mm/slub.c:2728
 fasync_alloc fs/fcntl.c:604 [inline]
 fasync_add_entry fs/fcntl.c:662 [inline]
 fasync_helper+0x37/0xb0 fs/fcntl.c:691
 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203
 setfl fs/fcntl.c:70 [inline]
 do_fcntl fs/fcntl.c:267 [inline]
 SYSC_fcntl fs/fcntl.c:372 [inline]
 SyS_fcntl+0x658/0xc70 fs/fcntl.c:357
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 0
(stack is not available)
Memory state around the buggy address:
 ffff8801c895be00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801c895be80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8801c895bf00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                                ^
 ffff8801c895bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801c895c000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-out-of-bounds in __lock_acquire+0x2c56/0x3640 kernel/locking/lockdep.c:3228 at addr ffff8801c895bf80
Read of size 8 by task syz-executor4/8532
CPU: 1 PID: 8532 Comm: syz-executor4 Tainted: G    B           4.9.60-gdfe0a9b #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c4bcf810 ffffffff81d91389 ffff8801d77fd500 ffff8801c895bf80
 ffff8801c895bfe0 ffffed003912b7f0 ffff8801c895bf80 ffff8801c4bcf838
 ffffffff8153c1bc ffffed003912b7f0 ffff8801d77fd500 0000000000000000
Call Trace:
 [<ffffffff81d91389>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d91389>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153c1bc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153c47c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153c47c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153c47c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153c819>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153c819>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff8123e746>] __lock_acquire+0x2c56/0x3640 kernel/locking/lockdep.c:3228
 [<ffffffff8123fb6e>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aa25e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aa25e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265f840>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff8265fe55>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff82661b8c>] sg_read+0x91c/0x1400 drivers/scsi/sg.c:527
 [<ffffffff8156c793>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156dd27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815719c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815719c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838aa305>] entry_SYSCALL_64_fastpath+0x23/0xc6
Object at ffff8801c895bf80, in cache fasync_cache size: 96
Allocated:
PID = 0
(stack is not available)
Freed:
PID = 0
(stack is not available)
Memory state around the buggy address:
 ffff8801c895be80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801c895bf00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
>ffff8801c895bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                   ^
 ffff8801c895c000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801c895c080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-out-of-bounds in look_up_lock_class kernel/locking/lockdep.c:676 [inline] at addr ffff8801c895bf78
BUG: KASAN: slab-out-of-bounds in register_lock_class+0x1318/0x1340 kernel/locking/lockdep.c:726 at addr ffff8801c895bf78
Read of size 8 by task syz-executor4/8532
CPU: 1 PID: 8532 Comm: syz-executor4 Tainted: G    B           4.9.60-gdfe0a9b #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c4bcf788 ffffffff81d91389 ffff8801d77fd500 ffff8801c895bf00
 ffff8801c895bf60 ffffed003912b7ef ffff8801c895bf78 ffff8801c4bcf7b0
 ffffffff8153c1bc ffffed003912b7ef ffff8801d77fd500 0000000000000000
Call Trace:
 [<ffffffff81d91389>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d91389>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153c1bc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153c47c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153c47c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153c47c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153c819>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153c819>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff81236e28>] look_up_lock_class kernel/locking/lockdep.c:676 [inline]
 [<ffffffff81236e28>] register_lock_class+0x1318/0x1340 kernel/locking/lockdep.c:726
 [<ffffffff8123bc5c>] __lock_acquire+0x16c/0x3640 kernel/locking/lockdep.c:3233
 [<ffffffff8123fb6e>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aa25e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aa25e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265f840>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff8265fe55>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff82661b8c>] sg_read+0x91c/0x1400 drivers/scsi/sg.c:527
 [<ffffffff8156c793>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156dd27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815719c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815719c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838aa305>] entry_SYSCALL_64_fastpath+0x23/0xc6
Object at ffff8801c895bf00, in cache fasync_cache size: 96
Allocated:
PID = 8532
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537
 slab_post_alloc_hook mm/slab.h:417 [inline]
 slab_alloc_node mm/slub.c:2715 [inline]
 slab_alloc mm/slub.c:2723 [inline]
 kmem_cache_alloc+0xba/0x290 mm/slub.c:2728
 fasync_alloc fs/fcntl.c:604 [inline]
 fasync_add_entry fs/fcntl.c:662 [inline]
 fasync_helper+0x37/0xb0 fs/fcntl.c:691
 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203
 setfl fs/fcntl.c:70 [inline]
 do_fcntl fs/fcntl.c:267 [inline]
 SYSC_fcntl fs/fcntl.c:372 [inline]
 SyS_fcntl+0x658/0xc70 fs/fcntl.c:357
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 0
(stack is not available)
Memory state around the buggy address:
 ffff8801c895be00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801c895be80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8801c895bf00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                                ^
 ffff8801c895bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801c895c000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
==================================================================
BUG: KASAN: slab-out-of-bounds in register_lock_class+0x11e9/0x1340 kernel/locking/lockdep.c:733 at addr ffff8801c895bf78
Read of size 8 by task syz-executor4/8532
CPU: 1 PID: 8532 Comm: syz-executor4 Tainted: G    B           4.9.60-gdfe0a9b #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c4bcf788 ffffffff81d91389 ffff8801d77fd500 ffff8801c895bf00
 ffff8801c895bf60 ffffed003912b7ef ffff8801c895bf78 ffff8801c4bcf7b0
 ffffffff8153c1bc ffffed003912b7ef ffff8801d77fd500 0000000000000000
Call Trace:
 [<ffffffff81d91389>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d91389>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153c1bc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153c47c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153c47c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153c47c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153c819>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153c819>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff81236cf9>] register_lock_class+0x11e9/0x1340 kernel/locking/lockdep.c:733
 [<ffffffff8123bc5c>] __lock_acquire+0x16c/0x3640 kernel/locking/lockdep.c:3233
 [<ffffffff8123fb6e>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aa25e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aa25e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265f840>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff8265fe55>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff82661b8c>] sg_read+0x91c/0x1400 drivers/scsi/sg.c:527
 [<ffffffff8156c793>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156dd27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815719c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815719c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584
 [<ffffffff838aa305>] entry_SYSCALL_64_fastpath+0x23/0xc6
Object at ffff8801c895bf00, in cache fasync_cache size: 96
Allocated:
PID = 8532
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537
 slab_post_alloc_hook mm/slab.h:417 [inline]
 slab_alloc_node mm/slub.c:2715 [inline]
 slab_alloc mm/slub.c:2723 [inline]
 kmem_cache_alloc+0xba/0x290 mm/slub.c:2728
 fasync_alloc fs/fcntl.c:604 [inline]
 fasync_add_entry fs/fcntl.c:662 [inline]
 fasync_helper+0x37/0xb0 fs/fcntl.c:691
 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203
 setfl fs/fcntl.c:70 [inline]
 do_fcntl fs/fcntl.c:267 [inline]
 SYSC_fcntl fs/fcntl.c:372 [inline]
 SyS_fcntl+0x658/0xc70 fs/fcntl.c:357
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 0
(stack is not available)
Memory state around the buggy address:
 ffff8801c895be00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801c895be80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8801c895bf00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                                ^
 ffff8801c895bf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8801c895c000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 1 PID: 8532 Comm: syz-executor4 Tainted: G    B           4.9.60-gdfe0a9b #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801c4bcf848 ffffffff81d91389 0000000000000000 000000000000018a
 ffff8801c895bf78 ffffffff8533acb0 0000000000000000 ffff8801c4bcf8d0
 ffffffff81236ddc ffffffff8123e746 0000000000000092 0000000004c27225
Call Trace:
 [<ffffffff81d91389>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d91389>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81236ddc>] register_lock_class+0x12cc/0x1340 kernel/locking/lockdep.c:738
 [<ffffffff8123bc5c>] __lock_acquire+0x16c/0x3640 kernel/locking/lockdep.c:3233
 [<ffffffff8123fb6e>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aa25e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aa25e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265f840>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff8265fe55>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff82661b8c>] sg_read+0x91c/0x1400 drivers/scsi/sg.c:527
 [<ffffffff8156c793>] __vfs_read+0x103/0x670 fs/read_write.c:452
 [<ffffffff8156dd27>] vfs_read+0x107/0x330 fs/read_write.c:475
 [<ffffffff815719c9>] SYSC_read fs/read_write.c:591 [inline]
 [<ffffffff815719c9>] SyS_read+0xd9/0x1b0 fs/read_write.c:584