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with SMTP id b6mr2088053ilf.127.1579334229890; Fri, 17 Jan 2020 23:57:09 -0800 (PST) Date: Fri, 17 Jan 2020 23:57:09 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c1192b059c656701@google.com> Subject: KASAN: slab-out-of-bounds Read in bitmap_port_add From: syzbot To: akpm@linux-foundation.org, aryabinin@virtuozzo.com, coreteam@netfilter.org, davem@davemloft.net, elver@google.com, fw@strlen.de, gregkh@linuxfoundation.org, info@metux.net, jeremy@azazel.net, kadlec@netfilter.org, kstewart@linuxfoundation.org, linux-kernel@vger.kernel.org, mark.rutland@arm.com, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, pablo@netfilter.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, torvalds@linux-foundation.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 5a9ef194 net: systemport: Fixed queue mapping in internal .. git tree: net console output: https://syzkaller.appspot.com/x/log.txt?x=137ad6d1e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=7e89bd00623fe71e dashboard link: https://syzkaller.appspot.com/bug?extid=dfccdb2bdb4a12ad425e compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1642f095e00000 The bug was bisected to: commit 751ad98d5f881df91ba47e013b82422912381e8e Author: Marco Elver Date: Fri Jul 12 03:54:00 2019 +0000 asm-generic, x86: add bitops instrumentation for KASAN bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14e9ccc9e00000 final crash: https://syzkaller.appspot.com/x/report.txt?x=16e9ccc9e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=12e9ccc9e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+dfccdb2bdb4a12ad425e@syzkaller.appspotmail.com Fixes: 751ad98d5f88 ("asm-generic, x86: add bitops instrumentation for KASAN") ================================================================== 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_do_add net/netfilter/ipset/ip_set_bitmap_port.c:74 [inline] BUG: KASAN: slab-out-of-bounds in bitmap_port_add+0xef/0xe60 net/netfilter/ipset/ip_set_bitmap_gen.h:136 Read of size 8 at addr ffff88809a9d0780 by task syz-executor.0/9809 CPU: 1 PID: 9809 Comm: syz-executor.0 Not tainted 5.5.0-rc5-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_do_add net/netfilter/ipset/ip_set_bitmap_port.c:74 [inline] bitmap_port_add+0xef/0xe60 net/netfilter/ipset/ip_set_bitmap_gen.h:136 bitmap_port_uadt+0x65d/0x8a0 net/netfilter/ipset/ip_set_bitmap_port.c:199 call_ad+0x1a0/0x5a0 net/netfilter/ipset/ip_set_core.c:1716 ip_set_ad.isra.0+0x572/0xb20 net/netfilter/ipset/ip_set_core.c:1804 ip_set_uadd+0x37/0x50 net/netfilter/ipset/ip_set_core.c:1829 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 RIP: 0033:0x45aff9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f87b5e8bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f87b5e8c6d4 RCX: 000000000045aff9 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000008c8 R14: 00000000004c9dfc R15: 000000000075bf2c Allocated by task 9806: 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+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 9585: 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_add_entry security/tomoyo/common.c:2045 [inline] tomoyo_supervisor+0xc2c/0xef0 security/tomoyo/common.c:2103 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline] tomoyo_env_perm+0x18e/0x210 security/tomoyo/environ.c:63 tomoyo_environ security/tomoyo/domain.c:674 [inline] tomoyo_find_next_domain+0x1354/0x1f6c security/tomoyo/domain.c:881 tomoyo_bprm_check_security security/tomoyo/tomoyo.c:107 [inline] tomoyo_bprm_check_security+0x124/0x1a0 security/tomoyo/tomoyo.c:97 security_bprm_check+0x63/0xb0 security/security.c:784 search_binary_handler+0x71/0x570 fs/exec.c:1645 exec_binprm fs/exec.c:1701 [inline] __do_execve_file.isra.0+0x1329/0x22b0 fs/exec.c:1821 do_execveat_common fs/exec.c:1867 [inline] do_execve fs/exec.c:1884 [inline] __do_sys_execve fs/exec.c:1960 [inline] __se_sys_execve fs/exec.c:1955 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1955 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 ffff88809a9d0780 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 0 bytes inside of 32-byte region [ffff88809a9d0780, ffff88809a9d07a0) The buggy address belongs to the page: page:ffffea00026a7400 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff88809a9d0fc1 raw: 00fffe0000000200 ffffea0002a69b88 ffffea00028d3508 ffff8880aa4001c0 raw: ffff88809a9d0fc1 ffff88809a9d0000 000000010000003f 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809a9d0680: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff88809a9d0700: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc >ffff88809a9d0780: 04 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff88809a9d0800: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff88809a9d0880: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ================================================================== --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches