================================================================== 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 ffff88809f4a1ec0 by task udevd/26954 CPU: 1 PID: 26954 Comm: udevd Not tainted 5.5.0-rc5-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:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:187 Code: 00 00 00 00 55 48 89 e5 65 48 8b 04 25 c0 1e 02 00 65 8b 15 e4 28 8d 7e 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 80 13 00 00 <83> fa 02 75 20 48 8b 88 88 13 00 00 8b 80 84 13 00 00 48 8b 11 48 RSP: 0018:ffffc90002cf7b38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff88805c836600 RBX: ffff8880a10f4680 RCX: ffffffff836310e7 RDX: 0000000000000000 RSI: ffffffff836310f5 RDI: 0000000000000000 RBP: ffffc90002cf7b38 R08: ffff88805c836600 R09: ffff88805c836e90 R10: fffffbfff14f6988 R11: ffffffff8a7b4c47 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff8880557cdc00 R15: 0000000000000000 tomoyo_check_acl+0x135/0x3e0 security/tomoyo/domain.c:175 tomoyo_execute_permission+0x188/0x4a0 security/tomoyo/file.c:615 tomoyo_find_next_domain+0x348/0x1f6c security/tomoyo/domain.c:754 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:107 [inline] tomoyo_bprm_check_security+0x124/0x1a0 security/tomoyo/tomoyo.c:97 security_bprm_check+0x63/0xb0 security/security.c:784 search_binary_handler+0x71/0x570 fs/exec.c:1645 exec_binprm fs/exec.c:1701 [inline] __do_execve_file.isra.0+0x1329/0x22b0 fs/exec.c:1821 do_execveat_common fs/exec.c:1867 [inline] do_execve fs/exec.c:1884 [inline] __do_sys_execve fs/exec.c:1960 [inline] __se_sys_execve fs/exec.c:1955 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1955 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f6c6caf1207 Code: 77 19 f4 48 89 d7 44 89 c0 0f 05 48 3d 00 f0 ff ff 76 e0 f7 d8 64 41 89 01 eb d8 f7 d8 64 41 89 01 eb df b8 3b 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 02 f3 c3 48 8b 15 00 8c 2d 00 f7 d8 64 89 02 RSP: 002b:00007ffe0551eb78 EFLAGS: 00000206 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f6c6caf1207 RDX: 00000000020bea90 RSI: 00007ffe0551ec70 RDI: 00007ffe0551fc80 RBP: 0000000000625500 R08: 0000000000006176 R09: 0000000000006176 R10: 0000000000000000 R11: 0000000000000206 R12: 00000000020bea90 R13: 0000000000000007 R14: 00000000020bd250 R15: 0000000000000005 Allocated by task 26903: 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+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 16308: 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 kvfree+0x61/0x70 mm/util.c:603 __vunmap+0x6ba/0x950 mm/vmalloc.c:2311 __vfree+0x41/0xd0 mm/vmalloc.c:2355 vfree+0x5f/0x90 mm/vmalloc.c:2385 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:883 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline] do_ip6t_get_ctl+0x750/0x960 net/ipv6/netfilter/ip6_tables.c:1709 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x7a/0xd0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt net/ipv6/ipv6_sockglue.c:1400 [inline] ipv6_getsockopt+0x205/0x280 net/ipv6/ipv6_sockglue.c:1380 tcp_getsockopt net/ipv4/tcp.c:3690 [inline] tcp_getsockopt+0x8f/0xe0 net/ipv4/tcp.c:3684 sock_common_getsockopt+0x94/0xd0 net/core/sock.c:3108 __sys_getsockopt+0x16d/0x310 net/socket.c:2162 __do_sys_getsockopt net/socket.c:2177 [inline] __se_sys_getsockopt net/socket.c:2174 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:2174 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 ffff88809f4a1ec0 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff88809f4a1ec0, ffff88809f4a1ee0) The buggy address belongs to the page: page:ffffea00027d2840 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809f4a1fc1 raw: 00fffe0000000200 ffffea00027d40c8 ffffea000269e348 ffff8880aa4001c0 raw: ffff88809f4a1fc1 ffff88809f4a1000 000000010000003e 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809f4a1d80: 00 01 fc fc fc fc fc fc 05 fc fc fc fc fc fc fc ffff88809f4a1e00: fb fb fb fb fc fc fc fc 05 fc fc fc fc fc fc fc >ffff88809f4a1e80: 05 fc fc fc fc fc fc fc 04 fc fc fc fc fc fc fc ^ ffff88809f4a1f00: 00 fc fc fc fc fc fc fc 05 fc fc fc fc fc fc fc ffff88809f4a1f80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================