QAT: Invalid ioctl
QAT: Invalid ioctl
==================================================================
BUG: KASAN: slab-out-of-bounds in cap_inode_getsecurity+0x621/0x7d0 security/commoncap.c:408
Read of size 4 at addr ffff8801c6fc3e80 by task syz-executor4/7068

CPU: 1 PID: 7068 Comm: syz-executor4 Not tainted 4.15.0-rc4-mm1+ #49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 print_address_description+0x73/0x250 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:355 [inline]
 kasan_report+0x23b/0x360 mm/kasan/report.c:413
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:433
 cap_inode_getsecurity+0x621/0x7d0 security/commoncap.c:408
 security_inode_getsecurity+0xcd/0x110 security/security.c:809
 xattr_getsecurity+0xd3/0x1f0 fs/xattr.c:244
 vfs_getxattr+0xc8/0x110 fs/xattr.c:333
 getxattr+0x116/0x2a0 fs/xattr.c:540
 path_getxattr+0xed/0x170 fs/xattr.c:568
 SYSC_getxattr fs/xattr.c:580 [inline]
 SyS_getxattr+0x33/0x40 fs/xattr.c:577
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452ac9
RSP: 002b:00007f5d7d8e8c58 EFLAGS: 00000212 ORIG_RAX: 00000000000000bf
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000020227f74 RSI: 0000000020b29f57 RDI: 000000002072d000
RBP: 000000000000013c R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000008c R11: 0000000000000212 R12: 00000000006efe40
R13: 00000000ffffffff R14: 00007f5d7d8e96d4 R15: 0000000000000000

Allocated by task 7068:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:551
 __do_kmalloc mm/slab.c:3705 [inline]
 __kmalloc_track_caller+0x15e/0x760 mm/slab.c:3720
 __do_krealloc mm/slab_common.c:1449 [inline]
 krealloc+0x65/0xc0 mm/slab_common.c:1496
 vfs_getxattr_alloc+0x177/0x270 fs/xattr.c:290
 cap_inode_getsecurity+0xfa/0x7d0 security/commoncap.c:399
 security_inode_getsecurity+0xcd/0x110 security/security.c:809
 xattr_getsecurity+0xd3/0x1f0 fs/xattr.c:244
 vfs_getxattr+0xc8/0x110 fs/xattr.c:333
 getxattr+0x116/0x2a0 fs/xattr.c:540
 path_getxattr+0xed/0x170 fs/xattr.c:568
 SYSC_getxattr fs/xattr.c:580 [inline]
 SyS_getxattr+0x33/0x40 fs/xattr.c:577
 entry_SYSCALL_64_fastpath+0x1f/0x96

Freed by task 4326:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x71/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3485 [inline]
 kfree+0xd6/0x260 mm/slab.c:3800
 kvfree+0x36/0x60 mm/util.c:416
 kvm_arch_free_memslot+0x11b/0x230 arch/x86/kvm/x86.c:8442
 kvm_free_memslot+0xb8/0x110 arch/x86/kvm/../../../virt/kvm/kvm_main.c:531
 kvm_free_memslots+0x9d/0xd0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:544
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:732 [inline]
 kvm_put_kvm+0x916/0xde0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:750
 kvm_vm_release+0x42/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:761
 __fput+0x327/0x7e0 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x199/0x270 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x9bb/0x1ad0 kernel/exit.c:869
 do_group_exit+0x149/0x400 kernel/exit.c:972
 get_signal+0x73f/0x16c0 kernel/signal.c:2337
 do_signal+0x94/0x1ee0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0x258/0x2f0 arch/x86/entry/common.c:161
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath+0x490/0x550 arch/x86/entry/common.c:264
 entry_SYSCALL_64_fastpath+0x94/0x96

The buggy address belongs to the object at ffff8801c6fc3e80
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 32-byte region [ffff8801c6fc3e80, ffff8801c6fc3ea0)
The buggy address belongs to the page:
page:ffffea00071bf0c0 count:1 mapcount:0 mapping:ffff8801c6fc3000 index:0xffff8801c6fc3fc1
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffff8801c6fc3000 ffff8801c6fc3fc1 000000010000003e
raw: ffffea0007615ba0 ffffea0007602ba0 ffff8801dac001c0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801c6fc3d80: fb fb fb fb fc fc fc fc 00 00 00 00 fc fc fc fc
 ffff8801c6fc3e00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
>ffff8801c6fc3e80: 01 fc fc fc fc fc fc fc 00 fc fc fc fc fc fc fc
                   ^
 ffff8801c6fc3f00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff8801c6fc3f80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================