================================================================== 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 ffff8880978525c0 by task blkid/15505 CPU: 0 PID: 15505 Comm: blkid 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline] RIP: 0010:lock_acquire+0x20b/0x410 kernel/locking/lockdep.c:4487 Code: 94 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 d3 01 00 00 48 83 3d 89 4f 38 08 00 0f 84 53 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0000:ffffc9001742fb98 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1326673 RBX: ffff888051d9e100 RCX: ffffffff815a9772 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffffc9001742fbe0 R08: 000000000000744b R09: fffffbfff16615ae R10: ffff888051d9e9c0 R11: ffff888051d9e100 R12: ffff88809e1d9250 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 down_write+0x93/0x150 kernel/locking/rwsem.c:1534 anon_vma_lock_write include/linux/rmap.h:120 [inline] __anon_vma_prepare+0xc0/0x3c0 mm/rmap.c:197 anon_vma_prepare include/linux/rmap.h:153 [inline] do_anonymous_page mm/memory.c:3148 [inline] handle_pte_fault mm/memory.c:3995 [inline] __handle_mm_fault+0x2470/0x3cc0 mm/memory.c:4127 handle_mm_fault+0x3b2/0xa50 mm/memory.c:4164 do_user_addr_fault arch/x86/mm/fault.c:1441 [inline] __do_page_fault+0x536/0xd80 arch/x86/mm/fault.c:1506 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1203 RIP: 0033:0x7fb12ba5f1e5 Code: 8b 05 97 dc 30 00 48 8b 00 48 85 c0 74 02 ff d0 48 89 d8 48 8b 4c 24 20 49 8d 1c 1f 48 29 cb 48 89 0d b7 fc 30 00 48 83 cb 01 <48> 89 59 08 48 01 05 c0 04 31 00 80 7c 24 3c 00 0f 84 d8 fb ff ff RSP: 002b:00007ffc49978810 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000021001 RCX: 00000000024c0000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 RBP: 00007fb12bd6ee40 R08: 00007fb12bd6ee40 R09: 00007fb12b9e9c60 R10: 0000000000091a20 R11: 0000000000000206 R12: 00007fb12bd6ee98 R13: 0000000000000000 R14: 00007fb12bd6dda0 R15: 00000000024e1000 Allocated by task 15432: 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+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 26659: 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 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:1222 vfs_getattr+0x25/0x70 fs/stat.c:115 vfs_statx+0x157/0x200 fs/stat.c:191 vfs_lstat include/linux/fs.h:3254 [inline] __do_sys_newlstat+0xa4/0x130 fs/stat.c:354 __se_sys_newlstat fs/stat.c:348 [inline] __x64_sys_newlstat+0x54/0x80 fs/stat.c:348 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 ffff8880978525c0 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff8880978525c0, ffff8880978525e0) The buggy address belongs to the page: page:ffffea00025e1480 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff888097852fc1 raw: 00fffe0000000200 ffffea00017bf008 ffffea0002530288 ffff8880aa4001c0 raw: ffff888097852fc1 ffff888097852000 0000000100000028 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888097852480: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff888097852500: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff888097852580: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc ^ ffff888097852600: fb fb fb fb fc fc fc fc 00 00 fc fc fc fc fc fc ffff888097852680: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ==================================================================