Opened 12 years ago

Closed 12 years ago

#469 closed defect (fixed)

tcp crashes during or after the first HTTP request

Reported by: Jakub Jermář Owned by: Jiri Svoboda
Priority: blocker Milestone: 0.5.0
Component: helenos/net/tcp Version: mainline
Keywords: Cc:
Blocker for: Depends on:
See also:

Description

As of mainline,1583, the tcp server crashes when run on amd64 shortly after or during the processing of TCP traffic of the first HTTP request.

The immediate reason for the crash is that in the following snippet:

static void tcp_sock_notify_data(socket_core_t *sock_core)
{
        log_msg(LVL_DEBUG, "tcp_sock_notify_data(%d)", sock_core->socket_id);
        async_exch_t *exch = async_exchange_begin(sock_core->sess);

sock_core->sess is a non-canonical address, which causes the task to be killed due to a general protection fault. Here, tcp_sock_notify_data() is called from tcp_sock_recv_fibril().

Change History (3)

comment:1 by Jakub Jermář, 12 years ago

Summary: tcp crashes on amd64 → tcp crashes during or after the first HTTP request

Just noticed the same crash happens also on ia32. The exception is a standard pagefault due to an unmapped value in sock_core->sess.

comment:2 by Jakub Jermář, 12 years ago

Priority: major → blocker

Making this a blocker for the 0.5.0 release. We really want to release a functional TCP server.

comment:3 by Jiri Svoboda, 12 years ago

Resolution: → fixed
Status: new → closed

Hopefully fixed in mainline,1584.

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