The whole DHCPv6 test message length was incorrectly used as the length
of DHCPv6 options causing the following bad memory access:
$ build/test-dhcp6-client
Assertion 'interface_index >= -1' failed at ../src/libsystemd-network/sd-dhcp6-client.c:129, function sd_dhcp6_client_set_index(). Ignoring.
=================================================================
==29135==ERROR: AddressSanitizer: global-buffer-overflow on address 0x7fe204aa9148 at pc 0x7fe204a5958f bp 0x7fff3e47d470 sp 0x7fff3e47d460
READ of size 1 at 0x7fe204aa9148 thread T0
#0 0x7fe204a5958e in option_parse_hdr ../src/libsystemd-network/dhcp6-option.c:145
#1 0x7fe204a59884 in dhcp6_option_parse ../src/libsystemd-network/dhcp6-option.c:165
#2 0x7fe204a4eb9c in test_advertise_option ../src/libsystemd-network/test-dhcp6-client.c:227
#3 0x7fe204a51c58 in main ../src/libsystemd-network/test-dhcp6-client.c:584
#4 0x7fe2031590df in __libc_start_main (/lib64/libc.so.6+0x200df)
#5 0x7fe204a4cc5b (/home/test/systemd/build/test-dhcp6-client+0x25c5b)
0x7fe204aa9148 is located 2 bytes to the right of global variable 'msg_advertise' from '../src/libsystemd-network/test-dhcp6-client.c' (0x7fe204aa9080) of size 198
0x7fe204aa9148 is located 56 bytes to the left of global variable 'msg_reply' from '../src/libsystemd-network/test-dhcp6-client.c' (0x7fe204aa9180) of size 173
SUMMARY: AddressSanitizer: global-buffer-overflow ../src/libsystemd-network/dhcp6-option.c:145 option_parse_hdr
We can't use LZ4_compress_limitedOutput_continue() because in the
worst-case scenario the compressed output can be slightly bigger than
the input block. This generally affects very few blocks and is no reason
to abort the compression process.
I ran into this when I noticed that Chromium core dumps weren't being
compressed. After switching to LZ4_compress_continue() a ~330MB Chromium
core dump gets compressed to ~17M.
Since c6a373a263, we might encounter unit templates via the
'list-units' verb. These aren't restartable (and we throw errors), so
make sure they're filtered out of the completion options.
fixes downstream bug: https://bugs.archlinux.org/task/41719
NTPv4 servers don't reply with unsynchronized status when they lost
synchronization, they only keep increasing the root dispersion and it's
up to the client to decide at which point they no longer consider it
synchronized.
Ignore replies with root distance over 5 seconds.
Similar to container_of(), we now use unique variable names for the bascic
math macros MAX, MIN, CLAMP, LESS_BY. Furthermore, unit tests are added to
verify they work as expected.
For a rationale, see:
commit fb835651af
Author: David Herrmann <dh.herrmann@gmail.com>
Date: Fri Aug 22 14:41:37 2014 +0200
shared: make container_of() use unique variable names
We must not access slot->floating after we possible dropped the last
reference to it. Fix all callback-invocations to first check
slot->floating and possible disconnect the slot, then release the last
reference.
Don't leak the device-names during device destruction in sysview. Somehow,
the device-name is "const char*", so make it "char*" first to avoid
warnings when calling free() on it.
In case 'scan_evdev' and 'scan_drm' are both false, we never set 'r' to
anyhting, thus return an uninitialized error code. Fix this by always
returning 0 as we catch negative codes earlier, anyway. Thanks to Thomas
H.P. Anderson for the report.
Like systemd-subterm, this new systemd-evcat tool should only be used to
debug libsystemd-terminal. systemd-evcat attaches to the running session
and pushes all evdev devices attached to the current session into an
idev-session. All events of the created idev-devices are then printed to
stdout for input-event debugging.
The idev-keyboard object provides keyboard devices to the idev interface.
It uses libxkbcommon to provide proper keymap support.
So far, the keyboard implementation is pretty straightforward with one
keyboard device per matching evdev element. We feed everything into the
system keymap and provide proper high-level keyboard events to the
application. Compose-features and IM need to be added later.
