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BUG: KASAN: slab-out-of-bounds in instrument_copy_to_user include/linux/instrumented.h:118 [inline]
BUG: KASAN: slab-out-of-bounds in _copy_to_user+0xe1/0x130 lib/usercopy.c:32
Read of size 42 at addr ffff8880186b3480 by task syz-executor.0/16606

CPU: 1 PID: 16606 Comm: syz-executor.0 Not tainted 5.14.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1ae/0x29f lib/dump_stack.c:105
 print_address_description+0x66/0x3b0 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report+0x163/0x210 mm/kasan/report.c:436
 check_region_inline mm/kasan/generic.c:135 [inline]
 kasan_check_range+0x2b5/0x2f0 mm/kasan/generic.c:189
 instrument_copy_to_user include/linux/instrumented.h:118 [inline]
 _copy_to_user+0xe1/0x130 lib/usercopy.c:32
 copy_to_user include/linux/uaccess.h:200 [inline]
 __htab_map_lookup_and_delete_batch+0x193b/0x2000 kernel/bpf/hashtab.c:1768
 bpf_map_do_batch+0x396/0x490 kernel/bpf/syscall.c:4176
 __sys_bpf+0xddc/0x126e0 kernel/bpf/syscall.c:4651
 __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4689
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8ca621e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000056c0f0 RCX: 00000000004665f9
RDX: 0000000000000038 RSI: 0000000020000040 RDI: 0000000000000019
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0f0
R13: 00007ffd375397af R14: 00007f8ca621e300 R15: 0000000000022000

Allocated by task 16606:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xcd/0x100 mm/kasan/common.c:513
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc_node+0x29b/0x430 mm/slub.c:4163
 kmalloc_node include/linux/slab.h:614 [inline]
 kvmalloc_node+0x81/0x110 mm/util.c:587
 kvmalloc include/linux/mm.h:806 [inline]
 kvmalloc_array include/linux/mm.h:824 [inline]
 __htab_map_lookup_and_delete_batch+0x414/0x2000 kernel/bpf/hashtab.c:1647
 bpf_map_do_batch+0x396/0x490 kernel/bpf/syscall.c:4176
 __sys_bpf+0xddc/0x126e0 kernel/bpf/syscall.c:4651
 __do_sys_bpf kernel/bpf/syscall.c:4691 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4689 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4689
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

The buggy address belongs to the object at ffff8880186b3480
 which belongs to the cache kmalloc-64 of size 64
The buggy address is located 0 bytes inside of
 64-byte region [ffff8880186b3480, ffff8880186b34c0)
The buggy address belongs to the page:
page:ffffea000061acc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x186b3
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea0000d1d100 0000000800000003 ffff888011041640
raw: 0000000000000000 0000000080200020 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 8431, ts 198535526060, free_ts 198535489854
 prep_new_page mm/page_alloc.c:2436 [inline]
 get_page_from_freelist+0x779/0xa30 mm/page_alloc.c:4168
 __alloc_pages+0x26c/0x5f0 mm/page_alloc.c:5390
 alloc_slab_page mm/slub.c:1691 [inline]
 allocate_slab+0xf1/0x540 mm/slub.c:1831
 new_slab mm/slub.c:1894 [inline]
 new_slab_objects mm/slub.c:2640 [inline]
 ___slab_alloc+0x1cf/0x350 mm/slub.c:2803
 __slab_alloc mm/slub.c:2843 [inline]
 slab_alloc_node mm/slub.c:2925 [inline]
 kmem_cache_alloc_node_trace+0x2d9/0x390 mm/slub.c:3009
 kmalloc_node include/linux/slab.h:609 [inline]
 kzalloc_node include/linux/slab.h:732 [inline]
 __get_vm_area_node+0x13a/0x2f0 mm/vmalloc.c:2382
 __vmalloc_node_range+0xe2/0x7f0 mm/vmalloc.c:2956
 __vmalloc_node mm/vmalloc.c:3015 [inline]
 vzalloc+0x75/0x80 mm/vmalloc.c:3085
 alloc_counters+0xd2/0x7b0 net/ipv6/netfilter/ip6_tables.c:816
 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:822 [inline]
 get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline]
 do_ipt_get_ctl+0xe40/0x1c10 net/ipv4/netfilter/ip_tables.c:1662
 nf_getsockopt+0x2ab/0x2d0 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x1d3f/0x2a20 net/ipv4/ip_sockglue.c:1777
 __sys_getsockopt+0x29b/0x560 net/socket.c:2220
 __do_sys_getsockopt net/socket.c:2235 [inline]
 __se_sys_getsockopt net/socket.c:2232 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1346 [inline]
 free_pcp_prepare+0xc29/0xd20 mm/page_alloc.c:1397
 free_unref_page_prepare mm/page_alloc.c:3332 [inline]
 free_unref_page+0x7e/0x550 mm/page_alloc.c:3411
 __vunmap+0x926/0xa70 mm/vmalloc.c:2587
 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:867 [inline]
 get_entries net/ipv4/netfilter/ip_tables.c:1023 [inline]
 do_ipt_get_ctl+0x1696/0x1c10 net/ipv4/netfilter/ip_tables.c:1662
 nf_getsockopt+0x2ab/0x2d0 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x1d3f/0x2a20 net/ipv4/ip_sockglue.c:1777
 __sys_getsockopt+0x29b/0x560 net/socket.c:2220
 __do_sys_getsockopt net/socket.c:2235 [inline]
 __se_sys_getsockopt net/socket.c:2232 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Memory state around the buggy address:
 ffff8880186b3380: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
 ffff8880186b3400: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8880186b3480: 00 00 00 00 03 fc fc fc fc fc fc fc fc fc fc fc
                               ^
 ffff8880186b3500: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff8880186b3580: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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