diff options
Diffstat (limited to 'net/sctp/protocol.c')
| -rw-r--r-- | net/sctp/protocol.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 612dc878e05c..619f96568e8e 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -1157,7 +1157,8 @@ SCTP_STATIC __init int sctp_init(void) /* Set the pressure threshold to be a fraction of global memory that * is up to 1/2 at 256 MB, decreasing toward zero with the amount of - * memory, with a floor of 128 pages. + * memory, with a floor of 128 pages, and a ceiling that prevents an + * integer overflow. * Note this initalizes the data in sctpv6_prot too * Unabashedly stolen from tcp_init */ @@ -1165,6 +1166,7 @@ SCTP_STATIC __init int sctp_init(void) limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT); limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11); limit = max(limit, 128UL); + limit = min(limit, INT_MAX * 4UL / 3 / 2); sysctl_sctp_mem[0] = limit / 4 * 3; sysctl_sctp_mem[1] = limit; sysctl_sctp_mem[2] = sysctl_sctp_mem[0] * 2; |