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Previously, if the hashmap is allow-list and a new deny-listed syscall
is added, seccomp_parse_syscall_filter() simply drop the new syscall
from hashmap even if error number is specified.
This makes 'allow-list' hashmap store two types of entries:
- allow-listed syscalls, which are stored with negative value (-1).
- deny-listed syscalls, which are stored with specified errno.
Fixes#18916.
parse_syscall_and_errno() does not check the validity of syscall name or
syscall group name, but it just split into syscall name and errno.
So, it is not necessary to call it for SystemCallLog=.
Shouldn't make any difference, but let's first flush any pending messages, then
unref the reference-counted stuff, and only at the end do the direct free calls.
C.f. 9793530228.
We'd crash when trying to access an already-deallocated object:
Thread no. 1 (7 frames)
#2 log_assert_failed_realm at ../src/basic/log.c:844
#3 event_inotify_data_drop at ../src/libsystemd/sd-event/sd-event.c:3035
#4 source_dispatch at ../src/libsystemd/sd-event/sd-event.c:3250
#5 sd_event_dispatch at ../src/libsystemd/sd-event/sd-event.c:3631
#6 sd_event_run at ../src/libsystemd/sd-event/sd-event.c:3689
#7 sd_event_loop at ../src/libsystemd/sd-event/sd-event.c:3711
#8 run at ../src/home/homed.c:47
The source in question is an inotify source, and the messages are:
systemd-homed[1340]: /home/ moved or renamed, recreating watch and rescanning.
systemd-homed[1340]: Assertion '*_head == _item' failed at src/libsystemd/sd-event/sd-event.c:3035, function event_inotify_data_drop(). Aborting.
on_home_inotify() got called, then manager_watch_home(), which unrefs the
existing inotify_event_source. I assume that the source gets dispatched again
because it was still in the pending queue.
I can't reproduce the issue (timing?), but this should
fix#17824, https://bugzilla.redhat.com/show_bug.cgi?id=1899264.
Dell new Privacy feature provide new hardware level privacy
protect for users
This patch remaps scancode 0x120001 to key code F20 micmute
The old matching string cannot cover some other Dell products
which have the privacy feature,expand the string to all the system
that can load the privacy driver,privacy driver already detect the
system if it can support this feature. So here we can safely just
map the micmute key to scancode 0x120001
Signed-off-by: Perry Yuan <perry_yuan@dell.com>
This test would normally get stuck when trying to mount the verity image
due to:
systemd-udevd[299]: dm-0: '/usr/sbin/dmsetup udevflags 6293812'(err) '==371==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.'
systemd-udevd[299]: dm-0: Process '/usr/sbin/dmsetup udevflags 6293812' failed with exit code 1
...
systemd-udevd[299]: dm-0: '/usr/sbin/dmsetup udevcomplete 6293812'(err) '==372==ASan runtime does not come first in initial library list; you should either link runtime to your application or manually preload it with LD_PRELOAD.'
systemd-udevd[299]: dm-0: Process '/usr/sbin/dmsetup udevcomplete 6293812' failed with exit code 1.
systemd-udevd[299]: dm-0: Command "/usr/sbin/dmsetup udevcomplete 6293812" returned 1 (error), ignoring.
so let's add a simple udev rule which sets $LD_PRELOAD for the block
subsystem.
Also, install the ASan library along with necessary dependencies into
the verity minimal image, to get rid of the annoying (yet harmless)
errors about missing library from $LD_LIBRARY.
If we synthesize a stub reply from multiple upstream packet (i.e. a
series of CNAME/DNAME redirects), it might happen that we add the same
RR to a different reply section at a different CNAME/DNAME redirect
chain element. Let's clean this up once we are about to send the reply
message to the client: let's remove sections from "lower-priority"
sections when they are already listed in a "higher-priority" section.
In 2f4d8e577c I argued that following
CNAMEs in the stub is not necessary anymore. However, I think it' better
to revert to the status quo ante and follow it after all, given it is
easy for us and makes sure our D-Bus/varlink replies are more similar to
our DNS stub replies that way, and we save clients potential roundtrips.
Hence, whenever we hit a CNAME/DNAME redirect, let's restart the query
like we do for the D-Bus/Varlink case, and collect replies as we go.
www.netflix.com responds with a chain of CNAMEs in the same packet.
Let's handle that properly (so far we only followed CNAMEs a single step
when in the same packet)
Fixes: #18819
Let's refuse to consider CNAME/DNAME replies matching for RR types where
that is not really conceptually allow (i.e. on CNAME/DNAME lookups
themselves).
(And add a similar check to dns_resource_key_match_cname_or_dname() too,
which implements a smilar match)
Also use structued initialization in one more place, use '\0' for NUL bytes,
and move variable to the right block (the code was OK, but it is strange to
have 'char *value' defined in a different scope then 'size_t value_allocated').
