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BUG: KASAN: slab-out-of-bounds in ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434
Read of size 2 at addr ffff888020e52ef0 by task syz-executor.5/31095

CPU: 1 PID: 31095 Comm: syz-executor.5 Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 print_address_description+0x74/0x340 mm/kasan/report.c:284
 print_report+0x107/0x220 mm/kasan/report.c:395
 kasan_report+0x139/0x170 mm/kasan/report.c:495
 ntfs_trim_fs+0x710/0x9e0 fs/ntfs3/bitmap.c:1434
 ntfs_ioctl_fitrim fs/ntfs3/file.c:40 [inline]
 ntfs_ioctl+0x2db/0x3b0 fs/ntfs3/file.c:57
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe110e8c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe111bc7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe110fabf80 RCX: 00007fe110e8c0d9
RDX: 0000000020000040 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007fe110ee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffd66abd7f R14: 00007fe111bc7300 R15: 0000000000022000
 </TASK>

Allocated by task 25943:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x70 mm/kasan/common.c:52
 ____kasan_kmalloc mm/kasan/common.c:371 [inline]
 __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:380
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:955 [inline]
 __kmalloc_node_track_caller+0xad/0x190 mm/slab_common.c:975
 kstrdup mm/util.c:61 [inline]
 kstrdup_const+0x56/0x90 mm/util.c:84
 __kernfs_new_node+0x99/0x730 fs/kernfs/dir.c:604
 kernfs_new_node fs/kernfs/dir.c:670 [inline]
 kernfs_create_dir_ns+0x90/0x220 fs/kernfs/dir.c:1021
 sysfs_create_dir_ns+0x181/0x390 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:63 [inline]
 kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_add+0x14c/0x210 lib/kobject.c:410
 device_add+0x47d/0xf90 drivers/base/core.c:3452
 netdev_register_kobject+0x178/0x310 net/core/net-sysfs.c:2015
 register_netdevice+0x136c/0x1a20 net/core/dev.c:10057
 veth_newlink+0x638/0xd10 drivers/net/veth.c:1764
 rtnl_newlink_create net/core/rtnetlink.c:3364 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3581 [inline]
 rtnl_newlink+0x14ed/0x2060 net/core/rtnetlink.c:3594
 rtnetlink_rcv_msg+0x7b8/0xe90 net/core/rtnetlink.c:6091
 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2540
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x7e7/0x9c0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x597/0x8e0 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x28e/0x390 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888020e52ed8
 which belongs to the cache kmalloc-8 of size 8
The buggy address is located 16 bytes to the right of
 8-byte region [ffff888020e52ed8, ffff888020e52ee0)

The buggy address belongs to the physical page:
page:ffffea0000839480 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x20e52
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888012841280
raw: 0000000000000000 0000000000660066 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 3665, tgid 3665 (syz-executor.0), ts 772828365673, free_ts 772828288981
 prep_new_page mm/page_alloc.c:2539 [inline]
 get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4291
 __alloc_pages+0x259/0x560 mm/page_alloc.c:5558
 alloc_slab_page+0xbd/0x190 mm/slub.c:1794
 allocate_slab+0x5e/0x4b0 mm/slub.c:1939
 new_slab mm/slub.c:1992 [inline]
 ___slab_alloc+0x7f4/0xeb0 mm/slub.c:3180
 __slab_alloc mm/slub.c:3279 [inline]
 slab_alloc_node mm/slub.c:3364 [inline]
 __kmem_cache_alloc_node+0x252/0x310 mm/slub.c:3437
 __do_kmalloc_node mm/slab_common.c:954 [inline]
 __kmalloc_node+0x9e/0x190 mm/slab_common.c:962
 kmalloc_node include/linux/slab.h:579 [inline]
 __vmalloc_area_node mm/vmalloc.c:3029 [inline]
 __vmalloc_node_range+0x5f4/0x1400 mm/vmalloc.c:3213
 __vmalloc_node mm/vmalloc.c:3278 [inline]
 vzalloc+0x75/0x80 mm/vmalloc.c:3351
 alloc_counters+0xca/0x820 net/ipv4/netfilter/ip_tables.c:801
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:839 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
 do_ip6t_get_ctl+0xea1/0x18c0 net/ipv6/netfilter/ip6_tables.c:1672
 nf_getsockopt+0x2ab/0x2d0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x285/0x3d0 net/ipv6/ipv6_sockglue.c:1513
 tcp_getsockopt+0x183/0x230 net/ipv4/tcp.c:4401
 __sys_getsockopt+0x2d8/0x5d0 net/socket.c:2296
 __do_sys_getsockopt net/socket.c:2311 [inline]
 __se_sys_getsockopt net/socket.c:2308 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2308
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1459 [inline]
 free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1509
 free_unref_page_prepare mm/page_alloc.c:3387 [inline]
 free_unref_page+0x7d/0x630 mm/page_alloc.c:3483
 __vunmap+0x867/0x9d0 mm/vmalloc.c:2713
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:884 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
 do_ip6t_get_ctl+0x1202/0x18c0 net/ipv6/netfilter/ip6_tables.c:1672
 nf_getsockopt+0x2ab/0x2d0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x285/0x3d0 net/ipv6/ipv6_sockglue.c:1513
 tcp_getsockopt+0x183/0x230 net/ipv4/tcp.c:4401
 __sys_getsockopt+0x2d8/0x5d0 net/socket.c:2296
 __do_sys_getsockopt net/socket.c:2311 [inline]
 __se_sys_getsockopt net/socket.c:2308 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2308
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff888020e52d80: fc fc fc 07 fc fc fc fc 07 fc fc fc fc 07 fc fc
 ffff888020e52e00: fc fc fa fc fc fc fc fa fc fc fc fc fa fc fc fc
>ffff888020e52e80: fc fa fc fc fc fc 02 fc fc fc fc 00 fc fc fc fc
                                                             ^
 ffff888020e52f00: fa fc fc fc fc 05 fc fc fc fc fa fc fc fc fc fa
 ffff888020e52f80: fc fc fc fc 00 fc fc fc fc fa fc fc fc fc fc fc
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