memory leak in sctp_stream

Title	Replies (including bot)	Last reply
[PATCH 5.4 000/434] 5.4.7-stable review	465 (465)	2020/01/03 16:53
[PATCH net] sctp: fix memleak on err handling of stream initialization	5 (5)	2019/12/18 05:59
memory leak in sctp_stream_init	4 (5)	2019/12/17 11:53

BUG: memory leak unreferenced object 0xffff8881080a3000 (size 4096): comm "syz-executor474", pid 7155, jiffies 4294942658 (age 15.870s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000df094087>] genradix_alloc_node lib/generic-radix-tree.c:90 [inline] [<00000000df094087>] __genradix_ptr_alloc+0xf5/0x250 lib/generic-radix-tree.c:122 [<0000000057cfa7bb>] __genradix_prealloc+0x46/0x70 lib/generic-radix-tree.c:223 [<0000000029d02dac>] sctp_stream_alloc_out.part.0+0x57/0x80 net/sctp/stream.c:86 [<00000000bb930a04>] sctp_stream_alloc_out net/sctp/stream.c:151 [inline] [<00000000bb930a04>] sctp_stream_init+0x129/0x180 net/sctp/stream.c:129 [<00000000ba13c246>] sctp_association_init net/sctp/associola.c:229 [inline] [<00000000ba13c246>] sctp_association_new+0x46e/0x700 net/sctp/associola.c:295 [<000000008eb57b4d>] sctp_connect_new_asoc+0x90/0x220 net/sctp/socket.c:1070 [<00000000ea24e048>] __sctp_connect+0x182/0x3b0 net/sctp/socket.c:1176 [<00000000aa2c530a>] __sctp_setsockopt_connectx+0xa9/0xf0 net/sctp/socket.c:1322 [<0000000018934bfd>] sctp_getsockopt_connectx3 net/sctp/socket.c:1407 [inline] [<0000000018934bfd>] sctp_getsockopt net/sctp/socket.c:8079 [inline] [<0000000018934bfd>] sctp_getsockopt+0x1394/0x32f6 net/sctp/socket.c:8010 [<000000005fd7e3c8>] sock_common_getsockopt+0x38/0x50 net/core/sock.c:3108 [<00000000333baf72>] __sys_getsockopt+0xa8/0x180 net/socket.c:2162 [<00000000de0f98e4>] __do_sys_getsockopt net/socket.c:2177 [inline] [<00000000de0f98e4>] __se_sys_getsockopt net/socket.c:2174 [inline] [<00000000de0f98e4>] __x64_sys_getsockopt+0x26/0x30 net/socket.c:2174 [<00000000cf1dfee9>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294 [<000000000f416860>] entry_SYSCALL_64_after_hwframe+0x44/0xa9