Messages in this thread | | | Date | Sun, 02 Jun 2019 13:22:05 -0700 | Subject | memory leak in sctp_v6_create_accept_sk | From | syzbot <> |
| |
Hello,
syzbot found the following crash on:
HEAD commit: 3ab4436f Merge tag 'nfsd-5.2-1' of git://linux-nfs.org/~bf.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=153c64a6a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=50393f7bfe444ff6 dashboard link: https://syzkaller.appspot.com/bug?extid=276ca1c77a19977c0130 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16195636a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1717d286a00000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+276ca1c77a19977c0130@syzkaller.appspotmail.com
ffffffffda RBX: 00000000006fbc38 RCX: 0000000000446b59 BUG: memory leak unreferenced object 0xffff88812382ec40 (size 1512): comm "syz-executor098", pid 7138, jiffies 4294945165 (age 7.780s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0a 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............ backtrace: [<0000000006e93bd5>] kmemleak_alloc_recursive include/linux/kmemleak.h:55 [inline] [<0000000006e93bd5>] slab_post_alloc_hook mm/slab.h:439 [inline] [<0000000006e93bd5>] slab_alloc mm/slab.c:3326 [inline] [<0000000006e93bd5>] kmem_cache_alloc+0x134/0x270 mm/slab.c:3488 [<000000007da542cd>] sk_prot_alloc+0x41/0x170 net/core/sock.c:1596 [<00000000a4eabe8a>] sk_alloc+0x35/0x2f0 net/core/sock.c:1656 [<0000000053fa015e>] sctp_v6_create_accept_sk+0x5c/0x1b0 net/sctp/ipv6.c:711 [<000000008c31091c>] sctp_accept+0x1df/0x290 net/sctp/socket.c:4913 [<00000000ec8d71b8>] inet_accept+0x4e/0x1d0 net/ipv4/af_inet.c:734 [<000000001f5fe485>] __sys_accept4+0x12a/0x280 net/socket.c:1760 [<0000000070a98ea5>] __do_sys_accept net/socket.c:1801 [inline] [<0000000070a98ea5>] __se_sys_accept net/socket.c:1798 [inline] [<0000000070a98ea5>] __x64_sys_accept+0x20/0x30 net/socket.c:1798 [<000000004a076fbd>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<00000000d752b65c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
--- 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
| |