================================================================== 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 ffff8880963362c0 by task blkid/9931 CPU: 1 PID: 9931 Comm: blkid Not tainted 5.5.0-rc6-next-20200116-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/0x32 mm/kasan/report.c:506 kasan_report+0x12/0x20 mm/kasan/common.c:641 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_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:lock_release+0x4c0/0x960 kernel/locking/lockdep.c:4505 Code: 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 8c 03 00 00 48 83 3d f7 83 58 08 00 0f 84 7f 01 00 00 48 8b bd 48 ff ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 RSP: 0018:ffffc900016a7b80 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff136774f RBX: 1ffff920002d4f75 RCX: 1ffff1100a255dca RDX: dffffc0000000000 RSI: 1ffff1100a255dcc RDI: 0000000000000286 RBP: ffffc900016a7c50 R08: 0000000000000001 R09: ffff8880512aee58 R10: fffffbfff154a5c8 R11: ffffffff8aa52e47 R12: ffff8880512ae5c0 R13: ffffffff81aa765f R14: ffffc900016a7c28 R15: ffff8880512ae5c0 __fs_reclaim_release mm/page_alloc.c:4078 [inline] fs_reclaim_release mm/page_alloc.c:4091 [inline] fs_reclaim_release+0x22/0x30 mm/page_alloc.c:4088 slab_pre_alloc_hook mm/slab.h:563 [inline] slab_alloc mm/slab.c:3306 [inline] kmem_cache_alloc+0x30/0x710 mm/slab.c:3484 getname_flags fs/namei.c:138 [inline] getname_flags+0xd6/0x5b0 fs/namei.c:128 getname+0x1a/0x20 fs/namei.c:209 do_sys_openat2+0x4a6/0x840 fs/open.c:1145 do_sys_open+0xfc/0x190 fs/open.c:1167 ksys_open include/linux/syscalls.h:1387 [inline] __do_sys_open fs/open.c:1173 [inline] __se_sys_open fs/open.c:1171 [inline] __x64_sys_open+0x7e/0xc0 fs/open.c:1171 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fa059de0120 Code: 48 8b 15 1b 4d 2b 00 f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 83 3d d5 a4 2b 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e 8c 01 00 48 89 04 24 RSP: 002b:00007ffd045d1d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa059de0120 RDX: 00007ffd045d3f41 RSI: 0000000000000000 RDI: 00007ffd045d3f41 RBP: 0000000000000000 R08: 0000000000000078 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000001497030 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000005 Allocated by task 9869: save_stack+0x23/0x90 mm/kasan/common.c:72 set_track mm/kasan/common.c:80 [inline] __kasan_kmalloc mm/kasan/common.c:515 [inline] __kasan_kmalloc.constprop.0+0xcf/0xe0 mm/kasan/common.c:488 kasan_kmalloc+0x9/0x10 mm/kasan/common.c:529 __do_kmalloc mm/slab.c:3656 [inline] __kmalloc+0x163/0x770 mm/slab.c:3665 kmalloc include/linux/slab.h:560 [inline] kzalloc include/linux/slab.h:669 [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 4788: 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:337 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:476 kasan_slab_free+0xe/0x10 mm/kasan/common.c:485 __cache_free mm/slab.c:3426 [inline] kfree+0x10a/0x2c0 mm/slab.c:3757 tomoyo_path_perm+0x24e/0x430 security/tomoyo/file.c:842 tomoyo_inode_getattr+0x1d/0x30 security/tomoyo/tomoyo.c:129 security_inode_getattr+0xf2/0x150 security/security.c:1255 vfs_getattr+0x25/0x70 fs/stat.c:117 vfs_statx+0x15d/0x200 fs/stat.c:201 vfs_stat include/linux/fs.h:3255 [inline] __do_sys_newstat+0xa4/0x130 fs/stat.c:351 __se_sys_newstat fs/stat.c:347 [inline] __x64_sys_newstat+0x54/0x80 fs/stat.c:347 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 ffff8880963362c0 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff8880963362c0, ffff8880963362e0) The buggy address belongs to the page: page:ffffea000258cd80 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff888096336fc1 flags: 0xfffe0000000200(slab) raw: 00fffe0000000200 ffffea00027d8e08 ffffea00026c4d08 ffff8880aa4001c0 raw: ffff888096336fc1 ffff888096336000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888096336180: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff888096336200: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff888096336280: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc ^ ffff888096336300: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff888096336380: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================