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* Fix errors found by valgrind
==12312== Syscall param sendmsg(msg.msg_iov[0]) points to uninitialised byte(s)
==12312== at 0x486CCF0: sendmsg (in /lib/libpthread-2.22.so)
==12312== by 0x12F57F: rtnl_talk (libnetlink.c:316)
==12312== by 0x132DA3: genl_resolve_mcg (genl.c:52)
==12312== by 0x484E1CB: init (vlan_mon.c:528)
==12312== by 0x484CDC0: vlan_mon_register_proto (vlan_mon.c:48)
==12312== by 0x510B763: load_vlan_mon (pppoe.c:1914)
==12312== by 0x510BFF2: load_config (pppoe.c:2064)
==12312== by 0x510C22A: pppoe_init (pppoe.c:2108)
==12312== by 0x483E9EB: triton_load_modules (triton.c:704)
==12312== by 0x1384B2: main (main.c:339)
==12312== Address 0xbedacdd8 is on thread 1's stack
==12312== in frame #2, created by genl_resolve_mcg (genl.c:23)
==12312== 15 bytes in 1 blocks are definitely lost in loss record 352 of 836
==12312== at 0x482A9A9: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==12312== by 0x4B97524: strdup (in /lib/libc-2.22.so)
==12312== by 0x12C30C: init (telnet.c:769)
==12312== by 0x483E9EB: triton_load_modules (triton.c:704)
==12312== by 0x1384B2: main (main.c:339)
==12312==
==12312== 15 bytes in 1 blocks are definitely lost in loss record 353 of 836
==12312== at 0x482A9A9: malloc (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==12312== by 0x4B97524: strdup (in /lib/libc-2.22.so)
==12312== by 0x12D60A: init (tcp.c:392)
==12312== by 0x483E9EB: triton_load_modules (triton.c:704)
==12312== by 0x1384B2: main (main.c:339)
* Fix another warnings by cppcheck
[accel-pppd/ctrl/ipoe/arp.c:256]: (error) Uninitialized variable: n
[accel-pppd/ctrl/pppoe/mac_filter.c:90]: (warning) %x in format string (no. 1) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:90]: (warning) %x in format string (no. 2) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:90]: (warning) %x in format string (no. 3) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:90]: (warning) %x in format string (no. 4) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:90]: (warning) %x in format string (no. 5) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:90]: (warning) %x in format string (no. 6) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:129]: (warning) %x in format string (no. 1) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:129]: (warning) %x in format string (no. 2) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:129]: (warning) %x in format string (no. 3) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:129]: (warning) %x in format string (no. 4) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:129]: (warning) %x in format string (no. 5) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:129]: (warning) %x in format string (no. 6) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:158]: (warning) %x in format string (no. 1) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:158]: (warning) %x in format string (no. 2) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:158]: (warning) %x in format string (no. 3) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:158]: (warning) %x in format string (no. 4) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:158]: (warning) %x in format string (no. 5) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/mac_filter.c:158]: (warning) %x in format string (no. 6) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ctrl/pppoe/pppoe.c:738]: (warning) Possible null pointer dereference
[accel-pppd/ipv6/dhcpv6.c:911]: (warning) %x in format string (no. 1) requires 'unsigned int *' but the argument type is 'int *'.
[accel-pppd/ipv6/dhcpv6.c:911]: (warning) %x in format string (no. 2) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ipv6/dhcpv6.c:911]: (warning) %x in format string (no. 3) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ipv6/dhcpv6.c:911]: (warning) %x in format string (no. 4) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/libnetlink/libnetlink.c:515]: (warning) Possible null pointer dereference
[accel-pppd/ppp/ipv6cp_opt_intfid.c:185]: (warning) %x in format string (no. 1) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ppp/ipv6cp_opt_intfid.c:298]: (warning) %x in format string (no. 1) requires 'unsigned int *' but the argument type is 'int *'.
[accel-pppd/ppp/ipv6cp_opt_intfid.c:298]: (warning) %x in format string (no. 2) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ppp/ipv6cp_opt_intfid.c:298]: (warning) %x in format string (no. 3) requires 'unsigned int *' but the argument type is 'signed int *'.
[accel-pppd/ppp/ipv6cp_opt_intfid.c:298]: (warning) %x in format string (no. 4) requires 'unsigned int *' but the argument type is 'signed int *'.
* Suppress compiler warnings
* Fix locking errors
/opt/pvs/accel-ppp/accel-pppd/extra/pppd_compat.c 279 warn V1020 The function exited without calling the 'sigchld_unlock' function. Check lines: 279, 249.
/opt/pvs/accel-ppp/accel-pppd/extra/pppd_compat.c 333 warn V1020 The function exited without calling the 'sigchld_unlock' function. Check lines: 333, 315.
/opt/pvs/accel-ppp/accel-pppd/extra/pppd_compat.c 422 warn V1020 The function exited without calling the 'sigchld_unlock' function. Check lines: 422, 372.
/opt/pvs/accel-ppp/accel-pppd/extra/pppd_compat.c 488 warn V1020 The function exited without calling the 'sigchld_unlock' function. Check lines: 488, 468.
/opt/pvs/accel-ppp/accel-pppd/triton/mempool.c 119 warn V1020 The function exited without calling the 'pthread_spin_unlock' function. Check lines: 119, 116.
* Fix array len errors
/opt/pvs/accel-ppp/accel-pppd/triton/conf_file.c 75 warn V557 Array underrun is possible. The value of 'len - 1' index could reach -1.
/opt/pvs/accel-ppp/accel-pppd/triton/conf_file.c 76 warn V557 Array underrun is possible. The value of '-- len' index could reach -1.
* Fix possible memory leaks
/opt/pvs/accel-ppp/accel-pppd/radius/radius.c 936 err V773 The function was exited without releasing the 'str' pointer. A memory leak is possible.
/opt/pvs/accel-ppp/accel-pppd/radius/serv.c 622 err V773 The function was exited without releasing the 'str' pointer. A memory leak is possible.
/opt/pvs/accel-ppp/accel-pppd/triton/conf_file.c 144 err V773 The function was exited without releasing the 'raw' pointer. A memory leak is possible.
* Fix unsafe code
/opt/pvs/accel-ppp/accel-pppd/cli/tcp.c 364 warn V1004 The 'host' pointer was used unsafely after it was verified against nullptr. Check lines: 338, 364.
/opt/pvs/accel-ppp/accel-pppd/cli/telnet.c 701 warn V1004 The 'host' pointer was used unsafely after it was verified against nullptr. Check lines: 675, 701.
/opt/pvs/accel-ppp/accel-pppd/extra/ippool.c 241 err V614 Potentially uninitialized pointer 'pos' used.
/opt/pvs/accel-ppp/accel-pppd/radius/dict.c 165 err V614 Uninitialized pointer 'parent_items' used.
* Remove duplicate code
/opt/pvs/accel-ppp/accel-pppd/radius/serv.c 202 warn V547 Expression 'ts.tv_sec < req->serv->fail_time' is always false.
* Fix treating signed bool variables as unsigned
* Add nullptr checking
/opt/pvs/accel-ppp/accel-pppd/ipv6/dhcpv6.c 886 err V595 The 'opt->val' pointer was utilized before it was verified against nullptr. Check lines: 886, 890.
/opt/pvs/accel-ppp/accel-pppd/ipv6/nd.c 479 err V595 The 'opt->val' pointer was utilized before it was verified against nullptr. Check lines: 479, 483.
/opt/pvs/accel-ppp/accel-pppd/radius/auth.c 152 err V595 The 'rpd->auth_ctx' pointer was utilized before it was verified against nullptr. Check lines: 152, 154.
/opt/pvs/accel-ppp/accel-pppd/triton/conf_file.c 114 err V595 The 'cur_sect' pointer was utilized before it was verified against nullptr. Check lines: 114, 117.
* Add logging of exit conditions
* Clarify calculation
[accel-pppd/ppp/ccp_mppe.c:281]: (style) Clarify calculation precedence for '&' and '?'.
[accel-pppd/ppp/ccp_mppe.c:282]: (style) Clarify calculation precedence for '&' and '?'.
[accel-pppd/ppp/ccp_mppe.c:283]: (style) Clarify calculation precedence for '&' and '?'.
[accel-pppd/ppp/ccp_mppe.c:284]: (style) Clarify calculation precedence for '&' and '?'.
[accel-pppd/ppp/ccp_mppe.c:285]: (style) Clarify calculation precedence for '&' and '?'.
[accel-pppd/ppp/ccp_mppe.c:286]: (style) Clarify calculation precedence for '&' and '?'.
[drivers/ipoe/ipoe.c:307]: (style) Clarify calculation precedence for '&' and '?'.
* Fix void calculations
[accel-pppd/ctrl/pppoe/disc.c:211]: (portability) 'pkt' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/ctrl/pptp/pptp.c:150]: (portability) 'buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/acct.c:37]: (portability) 'req.pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/auth.c:35]: (portability) 'req.pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/auth.c:79]: (portability) 'req.pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/dm_coa.c:43]: (portability) 'pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/dm_coa.c:47]: (portability) 'pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/dm_coa.c:57]: (portability) 'pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/dm_coa.c:65]: (portability) 'req.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/dm_coa.c:97]: (portability) 'req.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/radius/serv.c:364]: (portability) 'req.pack.buf' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/triton/mempool.c:115]: (portability) 'mmap_ptr' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/triton/mempool.c:122]: (portability) 'mmap_ptr' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/triton/mempool.c:276]: (portability) 'ptr' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
* Fix void part 2
[accel-pppd/ipv6/dhcpv6.c:844]: (portability) 'conf_dnssl' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/ipv6/nd.c:199]: (portability) '(void*)dnsslinfo' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[accel-pppd/ipv6/nd.c:432]: (portability) 'conf_dnssl' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
* Fix null pointer dereference
[accel-pppd/ctrl/ipoe/ipoe.c:2048]: (warning) Possible null pointer dereference: eth
[accel-pppd/ctrl/ipoe/ipoe.c:2049]: (warning) Possible null pointer dereference: iph
* Remove redundant check
/opt/pvs/accel-ppp/accel-pppd/ctrl/l2tp/packet.c 656 warn V547 Expression 'attr->length <= 16' is always false.
* PR fixes
* PR fixes 2
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Starting program: /usr/sbin/accel-pppd -c /etc/accel-ppp/accel-ppp.conf
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
[New Thread 0xb7ad9b40 (LWP 24563)]
[New Thread 0xb72d8b40 (LWP 24566)]
[New Thread 0xb6ad7b40 (LWP 24567)]
[New Thread 0xb60ffb40 (LWP 24569)]
[New Thread 0xb58feb40 (LWP 24570)]
[New Thread 0xb50fdb40 (LWP 24572)]
[New Thread 0xb48fcb40 (LWP 24573)]
conf_file:/etc/accel-ppp/accel-ppp.conf:93: no section opened
memory corruption:
malloc(10) at /var/tmp/portage/net-dialup/accel-ppp-9999/work/accel-ppp-9999/accel-pppd/triton/conf_file.c:117
free at /var/tmp/portage/net-dialup/accel-ppp-9999/work/accel-ppp-9999/accel-pppd/triton/conf_file.c:193
*** Error in `/usr/sbin/accel-pppd': corrupted double-linked list: 0xb61018c8 ***
Thread 3 "accel-pppd" received signal SIGABRT, Aborted.
[Switching to Thread 0xb72d8b40 (LWP 24566)]
0xb7fdc428 in __kernel_vsyscall ()
(gdb) bt full
No symbol table info available.
No symbol table info available.
No symbol table info available.
at /var/tmp/portage/net-dialup/accel-ppp-9999/work/accel-ppp-9999/accel-pppd/memdebug.c:90
mem = 0xb61018d0
r = 0
ctx = {fname = 0xb7fda1c4 <sections> "D\036ПЁт!\020╤╓R\005─\\m\005──", file = 0xfa8c7f2b, line = 108205909, items = 0x0}
sect = 0x8002f1bf <log_switch>
r = -2147097804
sections_bak = {next = 0xb3d01554, prev = 0xb3d016ec}
t = 0xb7ff2750
r = 4
set = {__val = {516, 0 <repeats 31 times>}}
sig = 10
need_free = 0
stack = 0x0
No symbol table info available.
No symbol table info available.
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Allow triton_context_wakeup() to run before triton_context_schedule().
When that happens, triton_context_schedule() now lets the context
running instead of putting it in sleep mode.
Note that, even though triton now allows triton_context_wakeup() to
happen before triton_context_schedule(), these two functions still need
to be paired and not nested. That is, in a sequence like the following,
triton_context_wakeup()
triton_context_wakeup()
triton_context_schedule()
triton_context_schedule()
the second triton_context_schedule() would put the context in sleep
mode. No matter how many triton_context_wakeup() have been called, the
first triton_context_schedule() "consumes" them all.
Being immune to schedule/wakeup inversion allows to fix the pppd_compat
module. This module needs to fork() to execute external programs. The
parent then waits for completion of its child using
triton_context_schedule(). When child terminates, the sigchld module
runs a callback that has to call triton_context_wakeup() to resume
execution of the parent.
The problem is that there is no synchronisation between the parent and
its child. When under stress, the child may execute faster than its
parent and the sigchld callback might run triton_context_wakeup()
before the parent had time to call triton_context_schedule().
Then accel-ppp might crash because the triton thread might have reset
ctx->thread to NULL, making triton_context_wakeup() write to invalid
memory when trying to insert the context in ctx->thread->wakeup_list[].
Synchronising the parent and its child completion's callback would
require cooperation from triton_context_schedule(). Otherwise we would
still have a time frame between the moment we let the callback waking
up the context and the moment we put the context in sleep mode.
Allowing schedule/wakeup call inversion in triton looks simpler since
it avoids modifying the current API.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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If MEMDEBUG is defined, then we need to include "memdebug.h" to define
'md_free'.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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size calculation)
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after commit 287adbfc205c02eac375f55fb94f13c073faec97 gcc
still may reorder alloca() and memset() calls.
fix that with volatile access & memory barrier.
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since alloca() result is used indirectly, gcc 4.7.2 thinks
the whole call can be dropped on any optimization level.
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Introduced 4 priorities:
0 - management (cli)
1 - starting sessions (default priority)
2 - active sessions
3 - finishing sessions
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Instead of entering working thread into sleep triton saves machine context and stack on sleep and restores context/stack on wakeup.
This saves costly new thread allocation.
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Add list_replace() and list_replace_init(), as defined in Linux kernel
sources.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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The pending_calls field of struct _triton_context_t can be concurrently
used by other contexts. So it must only be accessed or modified under
protection of the context's lock (like in triton_context_call() or
ctx_thread()).
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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This patch gets rid of synchronuos style of authentication/accounting.
Synchronous style of authentication/accounting produced sleeping threads
which becomes a problem when lots of sessions started/stopped and all they want authorization/accounting.
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When there are many interfaces to start accel-ppp stucks on startup because kernel slowly creates raw sockets.
So starting this proccess asynchronous improves accel-ppp responsiveness
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* Add list_first_entry() to list.h
* Declare parameter of list_empty() as const
Both changes are already included in Linux kernel sources.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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Signed-off-by: Dmitry Kozlov <xeb@mail.ru>
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already called triton_context_unregister)
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The triton_terminate() function works by setting the need_close flag
of each triton context, then queues this context for execution by a
triton thread if not already running. But if the context is already
being run by a triton thread, it may not notice that its need_close
flag has been updated (this flag is only checked at the beginning
of ctx_thread()). So if no other event wakes up that context (i.e.
if ctx_thread() isn't run again), it will never terminate.
This patch moves the need_close flag check at the end of ctx_thread()
so that a triton context can take the need_close flag into account
event if it's updated while running.
The context spinlock is also used to protect the need_close flag as
it is concurrently updated by triton_terminate().
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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This reverts commit 49b348dd38dcf89a057abebc0ffdf73748effa0a.
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Use the number of available processors to set the thread-count
option if not given in configuration file.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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* l2tp: Fix allocation checking when adding octets AVP
* cli, tcp: Fix non-NULL terminated string reception
* Fix va_end() missing calls
* chap-secrets: implemented encryption
* auth_pap: make messages like other auth modules
* cli: check xmit_buf is not null at enter to write function
* pppoe: implemented regular expression support
* chap-secrets: implemented encryption
* ippool: fixed initialization order
* optional shaper compiling
* ppp: dns/wins code cleanup
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Append the format() __attribute__ to function prototypes which
use a format string. This allows GCC to check for consistency
between the format string and its arguments when these
functions are called.
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
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