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MIME-Version: 1.0 X-Received: by 2002:a02:b791:: with SMTP id f17mr5130499jam.51.1565276285514; Thu, 08 Aug 2019 07:58:05 -0700 (PDT) Date: Thu, 08 Aug 2019 07:58:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f93dd2058f9c4873@google.com> Subject: memory leak in sctp_get_port_local (2) From: syzbot To: davem@davemloft.net, linux-kernel@vger.kernel.org, linux-sctp@vger.kernel.org, marcelo.leitner@gmail.com, netdev@vger.kernel.org, nhorman@tuxdriver.com, syzkaller-bugs@googlegroups.com, vyasevich@gmail.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 0eb0ce0a Merge tag 'spi-fix-v5.3-rc3' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1234588c600000 kernel config: https://syzkaller.appspot.com/x/.config?x=39113f5c48aea971 dashboard link: https://syzkaller.appspot.com/bug?extid=2d7ecdf99f15689032b3 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=160e1906600000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140ab906600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+2d7ecdf99f15689032b3@syzkaller.appspotmail.com executing program executing program executing program executing program executing program BUG: memory leak unreferenced object 0xffff88810fa4b380 (size 64): comm "syz-executor900", pid 7117, jiffies 4294946947 (age 16.560s) hex dump (first 32 bytes): 20 4e 00 00 89 e7 4c 8d 00 00 00 00 00 00 00 00 N....L......... 58 40 dd 16 82 88 ff ff 00 00 00 00 00 00 00 00 X@.............. backtrace: [<00000000f1461735>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<00000000f1461735>] slab_post_alloc_hook mm/slab.h:522 [inline] [<00000000f1461735>] slab_alloc mm/slab.c:3319 [inline] [<00000000f1461735>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483 [<00000000ff3ccf22>] sctp_bucket_create net/sctp/socket.c:8374 [inline] [<00000000ff3ccf22>] sctp_get_port_local+0x189/0x5b0 net/sctp/socket.c:8121 [<00000000eed41612>] sctp_do_bind+0xcc/0x1e0 net/sctp/socket.c:402 [<000000002bf65239>] sctp_bind+0x44/0x70 net/sctp/socket.c:302 [<00000000b1aaaf57>] inet_bind+0x40/0xc0 net/ipv4/af_inet.c:441 [<00000000db36b917>] __sys_bind+0x11c/0x140 net/socket.c:1647 [<00000000679cfe3c>] __do_sys_bind net/socket.c:1658 [inline] [<00000000679cfe3c>] __se_sys_bind net/socket.c:1656 [inline] [<00000000679cfe3c>] __x64_sys_bind+0x1e/0x30 net/socket.c:1656 [<000000002aac3ac2>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:296 [<000000000c38e074>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810fa4b380 (size 64): comm "syz-executor900", pid 7117, jiffies 4294946947 (age 19.260s) hex dump (first 32 bytes): 20 4e 00 00 89 e7 4c 8d 00 00 00 00 00 00 00 00 N....L......... 58 40 dd 16 82 88 ff ff 00 00 00 00 00 00 00 00 X@.............. backtrace: [<00000000f1461735>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<00000000f1461735>] slab_post_alloc_hook mm/slab.h:522 [inline] [<00000000f1461735>] slab_alloc mm/slab.c:3319 [inline] [<00000000f1461735>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483 [<00000000ff3ccf22>] sctp_bucket_create net/sctp/socket.c:8374 [inline] [<00000000ff3ccf22>] sctp_get_port_local+0x189/0x5b0 net/sctp/socket.c:8121 [<00000000eed41612>] sctp_do_bind+0xcc/0x1e0 net/sctp/socket.c:402 [<000000002bf65239>] sctp_bind+0x44/0x70 net/sctp/socket.c:302 [<00000000b1aaaf57>] inet_bind+0x40/0xc0 net/ipv4/af_inet.c:441 [<00000000db36b917>] __sys_bind+0x11c/0x140 net/socket.c:1647 [<00000000679cfe3c>] __do_sys_bind net/socket.c:1658 [inline] [<00000000679cfe3c>] __se_sys_bind net/socket.c:1656 [inline] [<00000000679cfe3c>] __x64_sys_bind+0x1e/0x30 net/socket.c:1656 [<000000002aac3ac2>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:296 [<000000000c38e074>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810fa4b380 (size 64): comm "syz-executor900", pid 7117, jiffies 4294946947 (age 21.990s) hex dump (first 32 bytes): 20 4e 00 00 89 e7 4c 8d 00 00 00 00 00 00 00 00 N....L......... 58 40 dd 16 82 88 ff ff 00 00 00 00 00 00 00 00 X@.............. backtrace: [<00000000f1461735>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<00000000f1461735>] slab_post_alloc_hook mm/slab.h:522 [inline] [<00000000f1461735>] slab_alloc mm/slab.c:3319 [inline] [<00000000f1461735>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483 [<00000000ff3ccf22>] sctp_bucket_create net/sctp/socket.c:8374 [inline] [<00000000ff3ccf22>] sctp_get_port_local+0x189/0x5b0 net/sctp/socket.c:8121 [<00000000eed41612>] sctp_do_bind+0xcc/0x1e0 net/sctp/socket.c:402 [<000000002bf65239>] sctp_bind+0x44/0x70 net/sctp/socket.c:302 [<00000000b1aaaf57>] inet_bind+0x40/0xc0 net/ipv4/af_inet.c:441 [<00000000db36b917>] __sys_bind+0x11c/0x140 net/socket.c:1647 [<00000000679cfe3c>] __do_sys_bind net/socket.c:1658 [inline] [<00000000679cfe3c>] __se_sys_bind net/socket.c:1656 [inline] [<00000000679cfe3c>] __x64_sys_bind+0x1e/0x30 net/socket.c:1656 [<000000002aac3ac2>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:296 [<000000000c38e074>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 BUG: memory leak unreferenced object 0xffff88810fa4b380 (size 64): comm "syz-executor900", pid 7117, jiffies 4294946947 (age 22.940s) hex dump (first 32 bytes): 20 4e 00 00 89 e7 4c 8d 00 00 00 00 00 00 00 00 N....L......... 58 40 dd 16 82 88 ff ff 00 00 00 00 00 00 00 00 X@.............. backtrace: [<00000000f1461735>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<00000000f1461735>] slab_post_alloc_hook mm/slab.h:522 [inline] [<00000000f1461735>] slab_alloc mm/slab.c:3319 [inline] [<00000000f1461735>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3483 [<00000000ff3ccf22>] sctp_bucket_create net/sctp/socket.c:8374 [inline] [<00000000ff3ccf22>] sctp_get_port_local+0x189/0x5b0 net/sctp/socket.c:8121 [<00000000eed41612>] sctp_do_bind+0xcc/0x1e0 net/sctp/socket.c:402 [<000000002bf65239>] sctp_bind+0x44/0x70 net/sctp/socket.c:302 [<00000000b1aaaf57>] inet_bind+0x40/0xc0 net/ipv4/af_inet.c:441 [<00000000db36b917>] __sys_bind+0x11c/0x140 net/socket.c:1647 [<00000000679cfe3c>] __do_sys_bind net/socket.c:1658 [inline] [<00000000679cfe3c>] __se_sys_bind net/socket.c:1656 [inline] [<00000000679cfe3c>] __x64_sys_bind+0x1e/0x30 net/socket.c:1656 [<000000002aac3ac2>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:296 [<000000000c38e074>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 executing program executing program executing program executing program --- 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. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches