Messages in this thread | | | Date | Mon, 24 Jun 2019 00:27:08 -0700 | Subject | memory leak in sctp_v4_create_accept_sk | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: abf02e29 Merge tag 'pm-5.2-rc6' of git://git.kernel.org/pu.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13470eb2a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=56f1da14935c3cce dashboard link: https://syzkaller.appspot.com/bug?extid=afabda3890cc2f765041 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15100a91a00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10c46026a00000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+afabda3890cc2f765041@syzkaller.appspotmail.com
ffffffffda RBX: 00000000006fbc38 RCX: 0000000000446a79 BUG: memory leak unreferenced object 0xffff888118137680 (size 1352): comm "syz-executor360", pid 7164, jiffies 4294941839 (age 13.960s) hex dump (first 32 bytes): ac 14 ff aa 0a 80 01 1a 00 00 00 00 00 00 00 00 ................ 02 00 07 40 00 00 00 00 00 00 00 00 00 00 00 00 ...@............ backtrace: [<000000006c358063>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<000000006c358063>] slab_post_alloc_hook mm/slab.h:439 [inline] [<000000006c358063>] slab_alloc mm/slab.c:3326 [inline] [<000000006c358063>] kmem_cache_alloc+0x134/0x270 mm/slab.c:3488 [<00000000f2fb26e7>] sk_prot_alloc+0x41/0x170 net/core/sock.c:1596 [<000000003c036edc>] sk_alloc+0x35/0x2f0 net/core/sock.c:1656 [<00000000c25725a4>] sctp_v4_create_accept_sk+0x32/0xb0 net/sctp/protocol.c:556 [<0000000049bd7e55>] sctp_accept+0x1df/0x290 net/sctp/socket.c:4913 [<00000000d287a63e>] inet_accept+0x4e/0x1d0 net/ipv4/af_inet.c:734 [<00000000acb0fc20>] __sys_accept4+0x12a/0x280 net/socket.c:1760 [<00000000bbdaf60b>] __do_sys_accept4 net/socket.c:1795 [inline] [<00000000bbdaf60b>] __se_sys_accept4 net/socket.c:1792 [inline] [<00000000bbdaf60b>] __x64_sys_accept4+0x22/0x30 net/socket.c:1792 [<000000006da547ee>] do_syscall_64+0x76/0x1a0 arch/x86/entry/common.c:301 [<00000000025f5c93>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
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