================================================================== 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 ffff88809e234800 by task syz-executor.5/9776 CPU: 0 PID: 9776 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_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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191 Code: 48 c7 c0 98 33 93 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d bf 45 b8 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 51 a7 75 f9 65 8b 05 92 30 27 78 RSP: 0018:ffffc90006477b78 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1326673 RBX: 0000000000000282 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000282 RBP: ffffc90006477b88 R08: ffff88805fafa480 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809eb76d60 R13: ffff88809eb76d98 R14: 0000000000000282 R15: ffffc90006477cf8 spin_unlock_irqrestore include/linux/spinlock.h:393 [inline] add_wait_queue+0x112/0x170 kernel/sched/wait.c:25 do_wait+0x19f/0xa10 kernel/exit.c:1428 kernel_wait4+0x171/0x290 kernel/exit.c:1617 __do_sys_wait4+0x147/0x160 kernel/exit.c:1629 __se_sys_wait4 kernel/exit.c:1625 [inline] __x64_sys_wait4+0x97/0xf0 kernel/exit.c:1625 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x41518a Code: 0f 83 6a 18 00 00 c3 66 0f 1f 84 00 00 00 00 00 8b 05 ee 32 66 00 85 c0 75 36 45 31 d2 48 63 d2 48 63 ff b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 d4 ff ff ff f7 RSP: 002b:00007fff94a71208 EFLAGS: 00000246 ORIG_RAX: 000000000000003d RAX: ffffffffffffffda RBX: 000000000004d227 RCX: 000000000041518a RDX: 0000000040000001 RSI: 00007fff94a71240 RDI: ffffffffffffffff RBP: 0000000000000181 R08: 0000000000000001 R09: 0000000001b35940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff94a71240 R14: 000000000004d1e1 R15: 00007fff94a71250 Allocated by task 13685: 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+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 13248: 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_unix_entry+0x469/0x5d0 security/tomoyo/network.c:576 tomoyo_check_unix_address security/tomoyo/network.c:605 [inline] tomoyo_socket_sendmsg_permission+0x37d/0x3d4 security/tomoyo/network.c:771 tomoyo_socket_sendmsg+0x26/0x30 security/tomoyo/tomoyo.c:486 security_socket_sendmsg+0x77/0xc0 security/security.c:2013 sock_sendmsg+0x45/0x130 net/socket.c:669 ____sys_sendmsg+0x358/0x880 net/socket.c:2343 ___sys_sendmsg+0x100/0x170 net/socket.c:2397 __sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2487 __do_sys_sendmmsg net/socket.c:2516 [inline] __se_sys_sendmmsg net/socket.c:2513 [inline] __x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2513 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 ffff88809e234800 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff88809e234800, ffff88809e234820) The buggy address belongs to the page: page:ffffea0002788d00 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809e234fc1 raw: 00fffe0000000200 ffffea0002a445c8 ffffea00026c9c88 ffff8880aa4001c0 raw: ffff88809e234fc1 ffff88809e234000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809e234700: 06 fc fc fc fc fc fc fc 06 fc fc fc fc fc fc fc ffff88809e234780: 00 00 fc fc fc fc fc fc 00 00 03 fc fc fc fc fc >ffff88809e234800: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff88809e234880: 00 00 fc fc fc fc fc fc fb fb fb fb fc fc fc fc ffff88809e234900: fb fb fb fb fc fc fc fc 00 00 00 02 fc fc fc fc ==================================================================