================================================================== 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+0x140/0x4b0 net/netfilter/ipset/ip_set_bitmap_gen.h:277 Read of size 8 at addr ffff88809fa9eb00 by task syz-executor841/9236 CPU: 1 PID: 9236 Comm: syz-executor841 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+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_port_gc_test net/netfilter/ipset/ip_set_bitmap_port.c:67 [inline] bitmap_port_gc+0x140/0x4b0 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 RIP: 0010:proc_tgid_base_lookup+0x0/0x260 fs/proc/base.c:3123 Code: 5b d1 ff e9 49 ff ff ff 44 89 e9 80 e1 07 fe c1 38 c1 0f 8c 61 ff ff ff 4c 89 ef e8 ea 5a d1 ff e9 54 ff ff ff 0f 1f 44 00 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 18 49 89 f6 48 89 RSP: 0018:ffffc90003817b20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffc90003817da0 RBX: ffffffff81e16520 RCX: dffffc0000000000 RDX: 0000000000000109 RSI: ffff888091382840 RDI: ffff888095e8db18 RBP: ffffc90003817d40 R08: ffffffff81bf7cc6 R09: fffffbfff145a112 R10: fffffbfff145a112 R11: 0000000000000000 R12: 0000000000008001 R13: 0000000000000000 R14: ffff888091382840 R15: dffffc0000000000 do_filp_open+0x192/0x3d0 fs/namei.c:3503 do_sys_open+0x29f/0x560 fs/open.c:1097 __do_sys_open fs/open.c:1115 [inline] __se_sys_open fs/open.c:1110 [inline] __x64_sys_open+0x87/0x90 fs/open.c:1110 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4011a0 Code: 01 f0 ff ff 0f 83 c0 0b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 2d 15 2d 00 00 75 14 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 94 0b 00 00 c3 48 83 ec 08 e8 fa 00 00 00 RSP: 002b:00007ffc39fd9268 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffc39fd9294 RCX: 00000000004011a0 RDX: 00007ffc39fd929a RSI: 0000000000080001 RDI: 00000000004a23c2 RBP: 00007ffc39fd9290 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004021c0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 8855: 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_port net/netfilter/ipset/ip_set_bitmap_port.c:234 [inline] bitmap_port_create+0x32c/0x790 net/netfilter/ipset/ip_set_bitmap_port.c:276 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 8544: 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 ffff88809fa9eb00 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff88809fa9eb00, ffff88809fa9eb20) The buggy address belongs to the page: page:ffffea00027ea780 refcount:1 mapcount:0 mapping:ffff8880aa8001c0 index:0xffff88809fa9efc1 raw: 00fffe0000000200 ffffea000256b648 ffffea00027e62c8 ffff8880aa8001c0 raw: ffff88809fa9efc1 ffff88809fa9e000 0000000100000029 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809fa9ea00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff88809fa9ea80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff88809fa9eb00: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff88809fa9eb80: fb fb fb fb fc fc fc fc 00 00 fc fc fc fc fc fc ffff88809fa9ec00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================