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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_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline]
BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
Read of size 8 at addr ffff8880a3b3c380 by task syz-executor.1/19741

CPU: 1 PID: 19741 Comm: syz-executor.1 Not tainted 5.5.0-rc6-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+0x197/0x210 lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374
 __kasan_report.cold+0x1b/0x41 mm/kasan/report.c:506
 kasan_report+0x12/0x20 mm/kasan/common.c:639
 check_memory_region_inline mm/kasan/generic.c:185 [inline]
 check_memory_region+0x134/0x1a0 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_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline]
 bitmap_port_gc+0x112/0x4f0 net/netfilter/ipset/ip_set_bitmap_gen.h:277
 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786
 __do_softirq+0x262/0x98c kernel/softirq.c:292
 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082
 </IRQ>
 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:337
 do_softirq kernel/softirq.c:329 [inline]
 __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189
 local_bh_enable include/linux/bottom_half.h:32 [inline]
 rcu_read_unlock_bh include/linux/rcupdate.h:706 [inline]
 ip_finish_output2+0x957/0x2610 net/ipv4/ip_output.c:229
 __ip_finish_output net/ipv4/ip_output.c:306 [inline]
 __ip_finish_output+0x604/0xc00 net/ipv4/ip_output.c:288
 ip_finish_output+0x38/0x1f0 net/ipv4/ip_output.c:316
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip_output+0x22b/0x680 net/ipv4/ip_output.c:430
 dst_output include/net/dst.h:436 [inline]
 ip_local_out+0xbb/0x1b0 net/ipv4/ip_output.c:125
 __ip_queue_xmit+0x878/0x1c20 net/ipv4/ip_output.c:530
 ip_queue_xmit+0x5a/0x70 include/net/ip.h:237
 __tcp_transmit_skb+0x1ac9/0x3900 net/ipv4/tcp_output.c:1177
 tcp_transmit_skb net/ipv4/tcp_output.c:1193 [inline]
 tcp_connect+0x2f1b/0x4610 net/ipv4/tcp_output.c:3599
 tcp_v4_connect+0x158f/0x1d80 net/ipv4/tcp_ipv4.c:311
 __inet_stream_connect+0x85c/0xec0 net/ipv4/af_inet.c:655
 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:719
 kernel_connect+0x69/0x90 net/socket.c:3675
 smc_connect+0x240/0x4a0 net/smc/af_smc.c:855
 __sys_connect_file+0x161/0x1c0 net/socket.c:1857
 __sys_connect+0x174/0x1b0 net/socket.c:1874
 __do_sys_connect net/socket.c:1885 [inline]
 __se_sys_connect net/socket.c:1882 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1882
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b349
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f0deb823c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f0deb8246d4 RCX: 000000000045b349
RDX: 0000000000000010 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000007d R14: 00000000004c1c5b R15: 000000000075c07c

Allocated by task 13713:
 save_stack+0x23/0x90 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc mm/kasan/common.c:513 [inline]
 __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:486
 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:527
 __do_kmalloc mm/slab.c:3656 [inline]
 __kmalloc+0x163/0x770 mm/slab.c:3665
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc include/linux/slab.h:670 [inline]
 ip_set_alloc+0x38/0x5e net/netfilter/ipset/ip_set_core.c:255
 init_map_port net/netfilter/ipset/ip_set_bitmap_port.c:234 [inline]
 bitmap_port_create+0x3dc/0x7c0 net/netfilter/ipset/ip_set_bitmap_port.c:276
 ip_set_create+0x6f1/0x1500 net/netfilter/ipset/ip_set_core.c:1111
 nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:672
 ____sys_sendmsg+0x753/0x880 net/socket.c:2343
 ___sys_sendmsg+0x100/0x170 net/socket.c:2397
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430
 __do_sys_sendmsg net/socket.c:2439 [inline]
 __se_sys_sendmsg net/socket.c:2437 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 12470:
 save_stack+0x23/0x90 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 kasan_set_free_info mm/kasan/common.c:335 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/common.c:474
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:483
 __cache_free mm/slab.c:3426 [inline]
 kfree+0x10a/0x2c0 mm/slab.c:3757
 dccp_ackvec_parsed_cleanup+0x81/0x120 net/dccp/ackvec.c:367
 ccid2_hc_tx_packet_recv+0x914/0x2240 net/dccp/ccids/ccid2.c:710
 ccid_hc_tx_packet_recv net/dccp/ccid.h:189 [inline]
 dccp_deliver_input_to_ccids+0x1f8/0x270 net/dccp/input.c:182
 dccp_rcv_established net/dccp/input.c:374 [inline]
 dccp_rcv_established+0x83/0xb0 net/dccp/input.c:364
 dccp_v4_do_rcv+0x139/0x190 net/dccp/ipv4.c:655
 sk_backlog_rcv include/net/sock.h:938 [inline]
 __release_sock+0x129/0x390 net/core/sock.c:2437
 release_sock+0x59/0x1c0 net/core/sock.c:2953
 dccp_sendmsg+0x6be/0xd20 net/dccp/proto.c:814
 inet_sendmsg+0x9e/0xe0 net/ipv4/af_inet.c:807
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:672
 ____sys_sendmsg+0x358/0x880 net/socket.c:2343
 ___sys_sendmsg+0x100/0x170 net/socket.c:2397
 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2487
 __do_sys_sendmmsg net/socket.c:2516 [inline]
 __se_sys_sendmmsg net/socket.c:2513 [inline]
 __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2513
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880a3b3c380
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 32-byte region [ffff8880a3b3c380, ffff8880a3b3c3a0)
The buggy address belongs to the page:
page:ffffea00028ecf00 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880a3b3cfc1
raw: 00fffe0000000200 ffffea000285b3c8 ffffea000255d448 ffff8880aa4001c0
raw: ffff8880a3b3cfc1 ffff8880a3b3c000 000000010000003e 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a3b3c280: 06 fc fc fc fc fc fc fc 06 fc fc fc fc fc fc fc
 ffff8880a3b3c300: 06 fc fc fc fc fc fc fc 05 fc fc fc fc fc fc fc
>ffff8880a3b3c380: 04 fc fc fc fc fc fc fc 06 fc fc fc fc fc fc fc
                   ^
 ffff8880a3b3c400: 06 fc fc fc fc fc fc fc 06 fc fc fc fc fc fc fc
 ffff8880a3b3c480: 05 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc
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