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When exiting PID 1 we most likely don't have stdio/stdout open, so the
final LSan check would not print any actionable information and would
just crash PID 1 leading up to a kernel panic, which is a bit annoying.
Let's instead attempt to open /dev/console, and if we succeed redirect
LSan's report there.
The result is a bit messy, as it's slightly interleaved with the kernel
panic, but it's definitely better than not having the stack trace at
all:
[ OK ] Reached target final.target.
[ OK ] Finished systemd-poweroff.service.
[ OK ] Reached target poweroff.target.
=================================================================
3 1m 43.251782] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100
[ 43.252838] CPU: 2 PID: 1 Comm: systemd Not tainted 6.4.12-200.fc38.x86_64 #1
==[1==ERR O R :4 3Le.a2k53562] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014
[ 43.254683] Call Trace:
[ 43.254911] <TASK>
[ 43.255107] dump_stack_lvl+0x47/0x60
S[ a 43.n2555i05] panic+t0x192/0x350
izer[ :43.255966 ] do_exit+0x990/0xdb10
etec[ 43.256504] do_group_exit+0x31/0x80
[ 43.256889] __x64_sys_exit_group+0x18/0x20
[ 43.257288] do_syscall_64+0x60/0x90
o_user_mod leaks[ 43.257618] ? syscall_exit_t
+0x2b/0x40
[ 43.258411] ? do_syscall_64+0x6c/0x90
1mDirect le[ 43.258755] ak of 21 byte(s)? exc_page_fault+0x7f/0x180
[ 43.259446] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 43.259901] RiIP: 0033:0x7f357nb8f3ad4
1 objec[ 43.260354] Ctode: 48 89 (f7 0f 05 c3 sf3 0f 1e fa b8 3b 00 00 00) 0f 05 c3 0f 1f 4 0 00 f3 0f 1e fa 50 58 b8 e7 00 00 00 48 83 ec 08 48 63 ff 0f 051
[ 43.262581] RSP: 002b:00007ffc25872440 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
a RBX: 00007f357be9b218 RCX: 00007f357b8f3ad4m:ffd
[ 43.264512] RDX: 0000000000000001 RSI: 00007f357b933b63 RDI: 0000000000000001
[ 43.265355] RBP: 00007f357be9b218 R08: efffffffffffffff R09: 00007ffc258721ef
[ 43.266191] R10: 000000000000003f R11: 0000000000000202 R12: 00000fe6ae9e0000
[ 43.266891] R13: 00007f3574f00000 R14: 0000000000000000 R15: 0000000000000007
[ 43.267517] </TASK>
#0 0x7f357b8814a8 in strdup (/lib64/libasan.so.8+0x814a8) (BuildId: e5f0a0d511a659fbc47bf41072869139cb2db47f)
#1 0x7f3578d43317 in cg_path_decode_unit ../src/basic/cgroup-util.c:1132
#2 0x7f3578d43936 in cg_path_get_unit ../src/basic/cgroup-util.c:1190
#3 0x7f3578d440f6 in cg_pid_get_unit ../src/basic/cgroup-util.c:1234
#4 0x7f35789263d7 in bus_log_caller ../src/shared/bus-util.c:734
#5 0x7f357a9cf10a in method_reload ../src/core/dbus-manager.c:1621
#6 0x7f3578f77497 in method_callbacks_run ../src/libsystemd/sd-bus/bus-objects.c:406
#7 0x7f3578f80dd8 in object_find_and_run ../src/libsystemd/sd-bus/bus-objects.c:1319
#8 0x7f3578f82487 in bus_process_object ../src/libsystemd/sd-bus/bus-objects.c:1439
#9 0x7f3578fe41f1 in process_message ../src/libsystemd/sd-bus/sd-bus.c:3007
#10 0x7f3578fe477b in process_running ../src/libsystemd/sd-bus/sd-bus.c:3049
#11 0x7f3578fe75d1 in bus_process_internal ../src/libsystemd/sd-bus/sd-bus.c:3269
#12 0x7f3578fe776e in sd_bus_process ../src/libsystemd/sd-bus/sd-bus.c:3296
#13 0x7f3578feaedc in io_callback ../src/libsystemd/sd-bus/sd-bus.c:3638
#14 0x7f35791c2f68 in source_dispatch ../src/libsystemd/sd-event/sd-event.c:4187
#15 0x7f35791cc6f9 in sd_event_dispatch ../src/libsystemd/sd-event/sd-event.c:4808
#16 0x7f35791cd830 in sd_event_run ../src/libsystemd/sd-event/sd-event.c:4869
#17 0x7f357abcd572 in manager_loop ../src/core/manager.c:3244
#18 0x41db21 in invoke_main_loop ../src/core/main.c:1960
#19 0x426615 in main ../src/core/main.c:3125
#20 0x7f3577c49b49 in __libc_start_call_main (/lib64/libc.so.6+0x27b49) (BuildId: 245240a31888ad5c11bbc55b18e02d87388f59a9)
#21 0x7f3577c49c0a in __libc_start_main_alias_2 (/lib64/libc.so.6+0x27c0a) (BuildId: 245240a31888ad5c11bbc55b18e02d87388f59a9)
#22 0x408494 in _start (/usr/lib/systemd/systemd+0x408494) (BuildId: fe61e1b0f00b6a36aa34e707a98c15c52f6b960a)
SUMMARY: AddressSanitizer: 21 byte(s) leaked in 1 allocation(s).
[ 43.295912] Kernel Offset: 0x7000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 43.297036] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100 ]---
Originally noticed in https://github.com/systemd/systemd/pull/28579.
Michele Perrone and Ralf Anderegg contribute to ALSA dice driver to support
products of Weiss Engineering. Their patch includes support for DAC202 Maya
edition.
* https://lore.kernel.org/alsa-devel/24703333-9250-40bf-e736-a5f3c4862034@weiss.ch/
This commit fulfulls an entry for the model as well as supplemental comment
to DAC2/Minerva.
When called with no argument, to list all known values, it is likely that it's
used by somebody to look at all the whole list. The output is more than a page,
so let's enable the pager.
When this was originally added in 9a00f57a5ba7ed431e6bac8d8b36518708503b4e,
the lookup function was called sd_path_home. But it was generalized a long time
ago.
The existing signal doesn't say which type of shutdown is going to happen.
With the introduction of soft-reboot, it is useful to have this information
broadcasted, so that clients can choose to do different things based on the
reboot type.
Add a{sv} as the payload so that more metadata can be added later if
needed, without needing to add yet another signal.
Send both old and new signal for backward compatibility, and send the new
one first so that clients can just wait for the first one on both old and
new systems.
If the systemd version on the host is too old and there's no local
build directory, use the default tools tree which will build an
image containing all the tooling required to build systemd and use
that to build the other presets.
Let's not build all presets by default, but only the system preset.
Also, let's only make the system preset depend on the initrd preset
if we're building a bootable disk image. This means that if we build
the system image as a cpio, uki or directory, the initrd preset will
be skipped as it's not necessary, making the build a little faster.
The kernel has this horrible build system feature where distros
can ship /sbin/installkernel and it'll automatically be used by
make install. Let's make sure that doesn't happen as on Debian this
script puts the kernel under the wrong name causing mkosi build
failures.
Let's stop manually destroying the timers when we fail to spawn a child.
We don't do this in any of the similar codepaths in any of the unit
types, only in two specific ones in socket/swap. Destroying the timer is
unnecessary, since this is done anyway in the _set_state() call of each
unit type if not appropriate, and every failure path here runs through
that anyway.
This brings all these similar codepaths into sync.
The first conversion to PidRef. It's mostly an excercise of
search/replace, but with some special care taken for life-cycle (i.e. we
need to destroy the structure properly once done, to release the pidfd).
It also uses pidfd based killing for some of the killing but leaves most
as it is to make the conversion minimal.
Let's start with the conversion of PID 1 to pidfds. Let's add a simple
structure with just two fields that can be used to maintain a reference
to arbitrary processes via both pid_t and pidfd.
This is an embeddable struct, to keep it in line with where we
previously used a pid_t directly to track a process.
Of course, since this might contain an fd on systems where we have pidfd
this structure has a proper lifecycle.
(Note that this is quite different from sd_event_add_child() event
source objects as that one is only for child processes and collects
process results, while this infra is much simpler and more generic and
can be used to reference any process, anywhere in the tree.)
I'm not quite sure what the original intent of this line was, but it
doesn't work in the one call-site the "required" argument is actually
used. The "writable" flag was indexed as a scalar leaving only the
"e" to compare against.
Instead, let's just sort the parsed flags and compare the whole thing.
Also substitute "required" as a pattern, so that pattern based
comparisons may be supported.
