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BUG: KASAN: slab-out-of-bounds in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
BUG: KASAN: slab-out-of-bounds in bitmap_ipmac_gc_test net/netfilter/ipset/ip_set_bitmap_ipmac.c:102 [inline]
BUG: KASAN: slab-out-of-bounds in bitmap_ipmac_gc+0x173/0x5d0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
Read of size 8 at addr ffff8880a387ee80 by task syz-executor400/8733

CPU: 0 PID: 8733 Comm: syz-executor400 Not tainted 5.5.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fb/0x318 lib/dump_stack.c:118
 print_address_description+0x74/0x5c0 mm/kasan/report.c:374
 __kasan_report+0x149/0x1c0 mm/kasan/report.c:506
 kasan_report+0x26/0x50 mm/kasan/common.c:639
 check_memory_region_inline mm/kasan/generic.c:182 [inline]
 check_memory_region+0x2b6/0x2f0 mm/kasan/generic.c:192
 __kasan_check_read+0x11/0x20 mm/kasan/common.c:95
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline]
 bitmap_ipmac_gc_test net/netfilter/ipset/ip_set_bitmap_ipmac.c:102 [inline]
 bitmap_ipmac_gc+0x173/0x5d0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
 call_timer_fn+0x95/0x170 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0x776/0x970 kernel/time/timer.c:1773
 run_timer_softirq+0x4a/0x90 kernel/time/timer.c:1786
 __do_softirq+0x283/0x7bd arch/x86/include/asm/paravirt.h:762
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x227/0x230 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x113/0x280 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:copy_page+0x7/0x10 arch/x86/lib/copy_page_64.S:19
Code: 5f 5d c3 89 d1 80 e1 07 38 c1 7c dc 48 8b 7d c8 e8 7e 0e b9 f9 48 8b 55 c8 eb cd cc cc cc cc cc cc cc cc 66 90 b9 00 02 00 00 <f3> 48 a5 c3 0f 1f 44 00 00 48 83 ec 10 48 89 1c 24 4c 89 64 24 08
RSP: 0000:ffffc900020f7b60 EFLAGS: 00010286 ORIG_RAX: ffffffffffffff13
RAX: 0005088000000000 RBX: ffff88808bdab000 RCX: 00000000000001f8
RDX: 0000000000000000 RSI: ffff88808bdab040 RDI: ffff888096de5040
RBP: ffffc900020f7c40 R08: ffffffff81b01852 R09: ffffed1015d86fc5
R10: ffffed1015d86fc5 R11: 0000000000000000 R12: 1ffff11012585b3d
R13: ffff888092c2d9e8 R14: ffffea00025b7940 R15: dffffc0000000000
 do_wp_page+0x5e4/0x16d0 mm/memory.c:2714
 handle_pte_fault mm/memory.c:4013 [inline]
 __handle_mm_fault mm/memory.c:4127 [inline]
 handle_mm_fault+0x241f/0x2900 mm/memory.c:4164
 do_user_addr_fault+0x588/0xaf0 arch/x86/mm/fault.c:1441
 __do_page_fault+0xd3/0x1f0 arch/x86/mm/fault.c:1506
 do_page_fault+0x99/0xb0 arch/x86/mm/fault.c:1530
 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1203
RIP: 0033:0x43fede
Code: 5c 41 5d 41 5e 5d c3 48 c7 c2 d0 ff ff ff f7 d8 41 bd ff ff ff ff 64 89 02 64 8b 04 25 d0 02 00 00 41 39 c4 0f 85 2f 01 00 00 <64> 44 89 04 25 d4 02 00 00 45 85 f6 0f 85 7f 00 00 00 48 85 db 74
RSP: 002b:00007ffd794f56c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000043fdba
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffd794f56e0 R08: 0000000000000000 R09: 0000000002303880
R10: 0000000002303b50 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000002395 R14: 0000000000000000 R15: 0000000000000000

Allocated by task 8734:
 save_stack mm/kasan/common.c:72 [inline]
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc+0x118/0x1c0 mm/kasan/common.c:513
 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:527
 __do_kmalloc mm/slab.c:3656 [inline]
 __kmalloc+0x254/0x340 mm/slab.c:3665
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc+0x21/0x40 include/linux/slab.h:670
 ip_set_alloc+0x32/0x60 net/netfilter/ipset/ip_set_core.c:255
 init_map_ipmac net/netfilter/ipset/ip_set_bitmap_ipmac.c:302 [inline]
 bitmap_ipmac_create+0x3d9/0x840 net/netfilter/ipset/ip_set_bitmap_ipmac.c:365
 ip_set_create+0x421/0xfd0 net/netfilter/ipset/ip_set_core.c:1111
 nfnetlink_rcv_msg+0x9ae/0xcd0 net/netfilter/nfnetlink.c:229
 netlink_rcv_skb+0x19e/0x3e0 net/netlink/af_netlink.c:2477
 nfnetlink_rcv+0x1e0/0x1e50 net/netfilter/nfnetlink.c:563
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x767/0x920 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0xa2c/0xd50 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:639 [inline]
 sock_sendmsg net/socket.c:659 [inline]
 ____sys_sendmsg+0x4f7/0x7f0 net/socket.c:2330
 ___sys_sendmsg net/socket.c:2384 [inline]
 __sys_sendmsg+0x1ed/0x290 net/socket.c:2417
 __do_sys_sendmsg net/socket.c:2426 [inline]
 __se_sys_sendmsg net/socket.c:2424 [inline]
 __x64_sys_sendmsg+0x7f/0x90 net/socket.c:2424
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8437:
 save_stack mm/kasan/common.c:72 [inline]
 set_track mm/kasan/common.c:80 [inline]
 kasan_set_free_info mm/kasan/common.c:335 [inline]
 __kasan_slab_free+0x12e/0x1e0 mm/kasan/common.c:474
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:483
 __cache_free mm/slab.c:3426 [inline]
 kfree+0x10d/0x220 mm/slab.c:3757
 tomoyo_path_perm+0x6ae/0x850 security/tomoyo/file.c:842
 tomoyo_inode_getattr+0x1c/0x20 security/tomoyo/tomoyo.c:129
 security_inode_getattr+0xc0/0x140 security/security.c:1222
 vfs_getattr+0x2a/0x6d0 fs/stat.c:115
 vfs_statx fs/stat.c:191 [inline]
 vfs_stat include/linux/fs.h:3249 [inline]
 __do_sys_newstat fs/stat.c:341 [inline]
 __se_sys_newstat+0x95/0x150 fs/stat.c:337
 __x64_sys_newstat+0x5b/0x70 fs/stat.c:337
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880a387ee80
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 32-byte region [ffff8880a387ee80, ffff8880a387eea0)
The buggy address belongs to the page:
page:ffffea00028e1f80 refcount:1 mapcount:0 mapping:ffff8880aa8001c0 index:0xffff8880a387efc1
raw: 00fffe0000000200 ffffea00027661c8 ffffea0002777948 ffff8880aa8001c0
raw: ffff8880a387efc1 ffff8880a387e000 000000010000003f 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a387ed80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
 ffff8880a387ee00: 00 00 01 fc fc fc fc fc fb fb fb fb fc fc fc fc
>ffff8880a387ee80: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
                   ^
 ffff8880a387ef00: 06 fc fc fc fc fc fc fc 00 00 01 fc fc fc fc fc
 ffff8880a387ef80: 00 00 01 fc fc fc fc fc fc fc fc fc fc fc fc fc
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