The fuzzer test case has a giant line with ";;;;;;;;;;;..." which is turned into
a strv of empty strings. Unfortunately, when pushing each string, strv_push() needs
to walk the whole array, which leads to quadratic behaviour. So let's use
greedy_allocation here and also keep location in the string to avoid iterating.
build/fuzz-xdg-desktop test/fuzz/fuzz-xdg-desktop/oss-fuzz-22812 51.10s user 0.01s system 99% cpu 51.295 total
↓
build/fuzz-xdg-desktop test/fuzz/fuzz-xdg-desktop/oss-fuzz-22812 0.07s user 0.01s system 96% cpu 0.083 total
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22812.
Other minor changes:
- say "was already defined" instead of "defined multiple times" to make it
clear that we're ignoring this second definition, and not all definitions
of the key
- unescaping needs to be done also for the last entry
When a command asks to load a unit directly and it is in state
UNIT_NOT_FOUND, and the cache is outdated, we refresh it and
attempto to load again.
Use the same logic when building up a transaction and a dependency in
UNIT_NOT_FOUND state is encountered.
Update the unit test to exercise this code path.
SIG-prefixed signals for `kill` are not POSIX compliant, so on Ubuntu CI
(which defaults to dash instead of bash) the TEST-52 contains following
error:
[ 9693.549638] sh[51]: + systemctl poweroff --no-block
[ 9693.553130] systemd-logind[26]: System is powering down.
[ 9693.608911] sh[54]: /bin/sh: 1: kill: Illegal option -S
This can be reproduced manually as well, either by running dash, or bash
in POSIX mode:
$ dash -c 'kill -SIGKILL 123'
dash: 1: kill: Illegal option -S
$ bash --posix -c 'kill -SIGKILL 123'
bash: line 0: kill: SIGKILL: invalid signal specification
SR-IOV provides the ability to partition a single physical PCI
resource into virtual PCI functions which can then be injected in
to a VM. In the case of network VFs, SR-IOV improves north-south n
etwork performance (that is, traffic with endpoints outside the
host machine) by allowing traffic to bypass the host machine’s network stack.
When the system is under heavy load, it can happen that the unit cache
is refreshed for an unrelated reason (in the test I simulate this by
attempting to start a non-existing unit). The new unit is found and
accounted for in the cache, but it's ignored since we are loading
something else.
When we actually look for it, by attempting to start it, the cache is
up to date so no refresh happens, and starting fails although we have
it loaded in the cache.
When the unit state is set to UNIT_NOT_FOUND, mark the timestamp in
u->fragment_loadtime. Then when attempting to load again we can check
both if the cache itself needs a refresh, OR if it was refreshed AFTER
the last failed attempt that resulted in the state being
UNIT_NOT_FOUND.
Update the test so that this issue reproduces more often.
Since the hwdb update from a79be2f807
the systemd-hwdb-update service started timing out under ASan when
compiled with gcc, as we started tripping over the 3 minutes timeout.
This affects only gcc runs, since the current gcc on Arch still suffers
from the detect_stack_use_after_return performance penalty[0]. Until
the fixed gcc is present in the respective repositories, let's bump
the timeout to 4 minutes, as we might not be able to upgrade right
away, due to systemd/systemd#16199.
Before the hwdb update:
[ 7958.292540] systemd[63]: systemd-hwdb-update.service: Executing: /usr/bin/time systemd-hwdb update
[ 7958.304005] systemd[1]: systemd-journald.service: Got notification message from PID 44 (FDSTORE=1)
[ 7958.314434] systemd[1]: systemd-journald.service: Added fd 3 (n/a) to fd store.
[ 8008.520082] systemd[1]: systemd-journald.service: Got notification message from PID 44 (WATCHDOG=1)
[ 8068.520151] systemd[1]: systemd-journald.service: Got notification message from PID 44 (WATCHDOG=1)
[ 8125.682843] time[63]: 84.47user 82.92system 2:47.50elapsed 99%CPU (0avgtext+0avgdata 811512maxresident)k
[ 8125.682843] time[63]: 0inputs+19680outputs (0major+25000853minor)pagefaults 0swaps
After the hwdb update:
[ 6215.491958] systemd[63]: systemd-hwdb-update.service: Executing: /usr/bin/time systemd-hwdb update
[ 6215.503380] systemd[1]: systemd-journald.service: Got notification message from PID 44 (FDSTORE=1)
[ 6215.514172] systemd[1]: systemd-journald.service: Added fd 3 (n/a) to fd store.
[ 6329.392918] systemd[1]: systemd-journald.service: Got notification message from PID 44 (WATCHDOG=1)
[ 6394.920205] time[63]: 89.48user 89.98system 2:59.55elapsed 99%CPU (0avgtext+0avgdata 812764maxresident)k
[ 6394.920205] time[63]: 0inputs+20568outputs (0major+27318354minor)pagefaults 0swaps
[0] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94910
https://tools.ietf.org/html/draft-knodel-terminology-02https://lwn.net/Articles/823224/
This gets rid of most but not occasions of these loaded terms:
1. scsi_id and friends are something that is supposed to be removed from
our tree (see #7594)
2. The test suite defines an API used by the ubuntu CI. We can remove
this too later, but this needs to be done in sync with the ubuntu CI.
3. In some cases the terms are part of APIs we call or where we expose
concepts the kernel names the way it names them. (In particular all
remaining uses of the word "slave" in our codebase are like this,
it's used by the POSIX PTY layer, by the network subsystem, the mount
API and the block device subsystem). Getting rid of the term in these
contexts would mean doing some major fixes of the kernel ABI first.
Regarding the replacements: when whitelist/blacklist is used as noun we
replace with with allow list/deny list, and when used as verb with
allow-list/deny-list.
