================================================================== 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 ffff888097330980 by task syz-executor.1/9748 CPU: 1 PID: 9748 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: __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 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:arch_local_save_flags+0x2a/0x50 arch/x86/include/asm/paravirt.h:747 Code: 48 c7 c0 90 33 93 89 55 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 48 89 e5 80 3c 10 00 75 15 48 83 3d 89 8d 42 08 00 74 09 9c <58> 0f 1f 44 00 00 5d c3 0f 0b 48 c7 c7 90 33 93 89 e8 40 da 62 00 RSP: 0018:ffffc90001e67990 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1326672 RBX: 0000000000000000 RCX: ffff88806f33cb18 RDX: dffffc0000000000 RSI: ffffffff899a3d80 RDI: ffff88806f33c5f8 RBP: ffffc90001e67998 R08: ffff88806f33c280 R09: ffffed1015d2703d R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffffff88348b20 R13: 00000000000009be R14: 0000000000000000 R15: ffff88806f33c280 ___might_sleep+0x163/0x2c0 kernel/sched/core.c:6767 __vmalloc_area_node mm/vmalloc.c:2494 [inline] __vmalloc_node_range+0x56f/0x790 mm/vmalloc.c:2546 __vmalloc_node mm/vmalloc.c:2601 [inline] __vmalloc_node_flags mm/vmalloc.c:2615 [inline] vzalloc+0x6b/0x90 mm/vmalloc.c:2660 alloc_counters.isra.0+0x53/0x680 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:1024 [inline] do_ipt_get_ctl+0x502/0x930 net/ipv4/netfilter/ip_tables.c:1700 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x7a/0xd0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1576 [inline] ip_getsockopt+0x176/0x1d0 net/ipv4/ip_sockglue.c:1556 tcp_getsockopt net/ipv4/tcp.c:3691 [inline] tcp_getsockopt+0x8f/0xe0 net/ipv4/tcp.c:3685 sock_common_getsockopt+0x94/0xd0 net/core/sock.c:3108 __sys_getsockopt+0x16d/0x310 net/socket.c:2175 __do_sys_getsockopt net/socket.c:2190 [inline] __se_sys_getsockopt net/socket.c:2187 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:2187 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45de5a Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 8d 8b fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 6a 8b fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007ffe351c6798 EFLAGS: 00000216 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffe351c67c0 RCX: 000000000045de5a RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000071de80 R08: 00007ffe351c67bc R09: 0000000000004000 R10: 00007ffe351c68c0 R11: 0000000000000216 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000000 R15: 000000000071bcc0 Allocated by task 10194: 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 10004: 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 single_release+0x95/0xc0 fs/seq_file.c:609 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:164 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline] syscall_return_slowpath arch/x86/entry/common.c:278 [inline] do_syscall_64+0x676/0x790 arch/x86/entry/common.c:304 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff888097330980 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff888097330980, ffff8880973309a0) The buggy address belongs to the page: page:ffffea00025ccc00 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff888097330fc1 raw: 00fffe0000000200 ffffea00028ec448 ffffea0002a34088 ffff8880aa4001c0 raw: ffff888097330fc1 ffff888097330000 0000000100000035 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888097330880: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff888097330900: 00 01 fc fc fc fc fc fc fb fb fb fb fc fc fc fc >ffff888097330980: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff888097330a00: fb fb fb fb fc fc fc fc 06 fc fc fc fc fc fc fc ffff888097330a80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================