ffffffff8165e557 000000000000122c ffff8801d911a118 ffff8801d911a0a0
Call Trace:
 [<ffffffff81d90a29>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90a29>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
==================================================================
BUG: KASAN: slab-out-of-bounds in __lock_acquire+0x2eff/0x3640 kernel/locking/lockdep.c:3224 at addr ffff8801d0813ff8
Read of size 8 by task syz-executor7/7953
 [<ffffffff8165e557>] handle_userfault+0xa37/0x1300 fs/userfaultfd.c:323
 [<ffffffff814cd781>] do_anonymous_page mm/memory.c:2747 [inline]
 [<ffffffff814cd781>] handle_pte_fault mm/memory.c:3488 [inline]
 [<ffffffff814cd781>] __handle_mm_fault mm/memory.c:3577 [inline]
 [<ffffffff814cd781>] handle_mm_fault+0x1fd1/0x2530 mm/memory.c:3614
 [<ffffffff810dd452>] __do_page_fault+0x5c2/0xd40 arch/x86/mm/fault.c:1406
 [<ffffffff810ddbf7>] do_page_fault+0x27/0x30 arch/x86/mm/fault.c:1469
 [<ffffffff838abcd8>] page_fault+0x28/0x30 arch/x86/entry/entry_64.S:1012
 [<ffffffff83208467>] do_ip_setsockopt.isra.12+0x1977/0x2960 net/ipv4/ip_sockglue.c:1151
 [<ffffffff8320954f>] compat_ip_setsockopt+0x4f/0xf0 net/ipv4/ip_sockglue.c:1269
 [<ffffffff83212eb5>] inet_csk_compat_setsockopt+0x95/0x120 net/ipv4/inet_connection_sock.c:914
 [<ffffffff8322924d>] compat_tcp_setsockopt+0x3d/0x70 net/ipv4/tcp.c:2747
 [<ffffffff82ed6352>] compat_sock_common_setsockopt+0xb2/0x140 net/core/sock.c:2717
 [<ffffffff82fd5989>] C_SYSC_setsockopt net/compat.c:398 [inline]
 [<ffffffff82fd5989>] compat_SyS_setsockopt+0x149/0x290 net/compat.c:381
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac161>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
CPU: 1 PID: 7953 Comm: syz-executor7 Not tainted 4.9.69-g3f1d77c #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d6e872f0 ffffffff81d90a29 ffff8801d743eb40 ffff8801d0813f80
 ffff8801d0813fe0 ffffed003a1027ff ffff8801d0813ff8 ffff8801d6e87318
 ffffffff8153a45c ffffed003a1027ff ffff8801d743eb40 0000000000000000
Call Trace:
 [<ffffffff81d90a29>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81d90a29>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153a45c>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153a71c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153a71c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153a71c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153aab9>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153aab9>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff8123c37f>] __lock_acquire+0x2eff/0x3640 kernel/locking/lockdep.c:3224
 [<ffffffff8123d4fe>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aaa2e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aaa2e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265fe60>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff82660475>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff826622ac>] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527
 [<ffffffff81568ef1>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156cd60>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156cd60>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156d014>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8160c0af>] kernel_readv fs/splice.c:363 [inline]
 [<ffffffff8160c0af>] default_file_splice_read+0x43f/0x7a0 fs/splice.c:435
 [<ffffffff8160b1aa>] do_splice_to+0x10a/0x160 fs/splice.c:899
 [<ffffffff81610f1f>] do_splice fs/splice.c:1192 [inline]
 [<ffffffff81610f1f>] SYSC_splice fs/splice.c:1416 [inline]
 [<ffffffff81610f1f>] SyS_splice+0xf5f/0x1520 fs/splice.c:1399
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac161>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
Object at ffff8801d0813f80, in cache fasync_cache size: 96
Allocated:
PID = 7953
 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
 ioctl_fioasync fs/ioctl.c:534 [inline]
 do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639
 C_SYSC_ioctl fs/compat_ioctl.c:1624 [inline]
 compat_SyS_ioctl+0x4da/0x2050 fs/compat_ioctl.c:1549
 do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
Freed:
PID = 2864
 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_slab_free+0x73/0xc0 mm/kasan/kasan.c:571
 slab_free_hook mm/slub.c:1355 [inline]
 slab_free_freelist_hook mm/slub.c:1377 [inline]
 slab_free mm/slub.c:2958 [inline]
 kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980
 fasync_free+0x1c/0x20 fs/fcntl.c:614
 do_fcntl_add_lease fs/locks.c:1899 [inline]
 fcntl_setlease+0x168/0x220 fs/locks.c:1917
 do_fcntl fs/fcntl.c:325 [inline]
 SYSC_fcntl fs/fcntl.c:372 [inline]
 SyS_fcntl+0x6e6/0xc70 fs/fcntl.c:357
 C_SYSC_fcntl64 fs/compat.c:469 [inline]
 compat_SyS_fcntl64+0xce/0x4f0 fs/compat.c:403
 do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
Memory state around the buggy address:
 ffff8801d0813e80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8801d0813f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff8801d0813f80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                                ^
 ffff8801d0814000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8801d0814080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 7953 Comm: syz-executor7 Tainted: G    B           4.9.69-g3f1d77c #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801cf680000 task.stack: ffff8801d6e80000
RIP: 0010:[<ffffffff81239614>]  [<ffffffff81239614>] __lock_acquire+0x194/0x3640 kernel/locking/lockdep.c:3234
RSP: 0018:ffff8801d6e873c0  EFLAGS: 00010086
RAX: dead4ead00000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 1ffff1003a102800 RSI: 0000000000000000 RDI: ffff8801d0814000
RBP: ffff8801d6e87580 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8801cf680000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801d0813ff8
FS:  0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7726b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020fd6000 CR3: 00000001ca29b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 00000000024000c0 ffff8801d1d19aa8 ffff8801da0018c0 ffff8801d6e87608
 ffffffff815397a3 000000400000000d ffff8801d6e87400 ffffffff00000000
 ffffffff8107c576 ffffffff81539743 ffffffff815399cd ffffffff81535a8b
Call Trace:
 [<ffffffff8123d4fe>] lock_acquire+0x12e/0x410 kernel/locking/lockdep.c:3756
 [<ffffffff838aaa2e>] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:186 [inline]
 [<ffffffff838aaa2e>] _raw_write_lock_irqsave+0x4e/0x62 kernel/locking/spinlock.c:303
 [<ffffffff8265fe60>] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122
 [<ffffffff82660475>] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838
 [<ffffffff826622ac>] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527
 [<ffffffff81568ef1>] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714
 [<ffffffff8156cd60>] do_loop_readv_writev fs/read_write.c:880 [inline]
 [<ffffffff8156cd60>] do_readv_writev+0x520/0x750 fs/read_write.c:874
 [<ffffffff8156d014>] vfs_readv+0x84/0xc0 fs/read_write.c:898
 [<ffffffff8160c0af>] kernel_readv fs/splice.c:363 [inline]
 [<ffffffff8160c0af>] default_file_splice_read+0x43f/0x7a0 fs/splice.c:435
 [<ffffffff8160b1aa>] do_splice_to+0x10a/0x160 fs/splice.c:899
 [<ffffffff81610f1f>] do_splice fs/splice.c:1192 [inline]
 [<ffffffff81610f1f>] SYSC_splice fs/splice.c:1416 [inline]
 [<ffffffff81610f1f>] SyS_splice+0xf5f/0x1520 fs/splice.c:1399
 [<ffffffff81006fc7>] do_syscall_32_irqs_on arch/x86/entry/common.c:322 [inline]
 [<ffffffff81006fc7>] do_fast_syscall_32+0x2f7/0x890 arch/x86/entry/common.c:384
 [<ffffffff838ac161>] entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:124
Code: 9e ff ff 44 8b 94 24 98 00 00 00 48 85 c0 8b 8c 24 90 00 00 00 44 8b 8c 24 88 00 00 00 4c 8b 9c 24 80 00 00 00 0f 84 ff 07 00 00 <f0> ff 80 98 01 00 00 49 8d b3 a8 08 00 00 48 ba 00 00 00 00 00 
RIP  [<ffffffff81239614>] __lock_acquire+0x194/0x3640 kernel/locking/lockdep.c:3234
 RSP <ffff8801d6e873c0>
---[ end trace 406d2160a0ce9044 ]---