================================================================== 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+0x119/0x590 net/netfilter/ipset/ip_set_bitmap_gen.h:277 Read of size 8 at addr ffff8880a86fc880 by task syz-executor.5/9823 CPU: 0 PID: 9823 Comm: syz-executor.5 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_ipmac_gc_test net/netfilter/ipset/ip_set_bitmap_ipmac.c:102 [inline] bitmap_ipmac_gc+0x119/0x590 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 54 29 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:ffffc900026b7860 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff8880611dc2c0 RBX: 0000000000000008 RCX: ffffffff83646e55 RDX: 0000000000000000 RSI: ffffffff83646e1e RDI: 0000000000000001 RBP: ffffc900026b7860 R08: ffff8880611dc2c0 R09: fffff520004d6f23 R10: fffff520004d6f22 R11: 0000000000000000 R12: ffff88809a2ef600 R13: 0000000000000002 R14: 0000000000000326 R15: 0000000000000000 tomoyo_domain_quota_is_ok+0x2fe/0x540 security/tomoyo/util.c:1071 tomoyo_supervisor+0x2e8/0xef0 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x263/0x360 security/tomoyo/file.c:573 tomoyo_path_perm+0x318/0x430 security/tomoyo/file.c:838 tomoyo_path_unlink+0x9b/0xe0 security/tomoyo/tomoyo.c:156 security_path_unlink+0xfa/0x160 security/security.c:1044 do_unlinkat+0x3b7/0x6d0 fs/namei.c:4000 __do_sys_unlink fs/namei.c:4050 [inline] __se_sys_unlink fs/namei.c:4048 [inline] __x64_sys_unlink+0x42/0x50 fs/namei.c:4048 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b097 Code: 00 66 90 b8 58 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 4d b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 2d b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffd25a7aca8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045b097 RDX: 00007ffd25a7acc0 RSI: 00007ffd25a7acc0 RDI: 00007ffd25a7ad50 RBP: 00000000000002f7 R08: 0000000000000000 R09: 0000000000000010 R10: 000000000000000a R11: 0000000000000246 R12: 00007ffd25a7bde0 R13: 0000000000cec940 R14: 0000000000000000 R15: 00007ffd25a7bde0 Allocated by task 16457: 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_ipmac net/netfilter/ipset/ip_set_bitmap_ipmac.c:302 [inline] bitmap_ipmac_create+0x4e8/0xa00 net/netfilter/ipset/ip_set_bitmap_ipmac.c:365 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 9815: 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/ipv4/netfilter/ip_tables.c:867 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1024 [inline] do_ipt_get_ctl+0x720/0x930 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: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 ffff8880a86fc880 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff8880a86fc880, ffff8880a86fc8a0) The buggy address belongs to the page: page:ffffea0002a1bf00 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880a86fcfc1 raw: 00fffe0000000200 ffffea0002a5a688 ffffea0002a5d748 ffff8880aa4001c0 raw: ffff8880a86fcfc1 ffff8880a86fc000 000000010000003a 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a86fc780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8880a86fc800: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff8880a86fc880: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff8880a86fc900: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8880a86fc980: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================