Public bug reported:
[Impact]
I'm getting the following build errors when I try to install lttng-
modules-dkms on the latest hirsute 5.11 kernel:
In file included from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../probes/define_trace.h:87,
from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../instrumentation/events/lttng-module/block.h:1122,
from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/lttng-probe-block.c:30:
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../probes/lttng-tracepoint-event-impl.h:131:6:
error: conflicting types for ‘trace_block_rq_requeue’
131 | void trace_##_name(_proto);
| ^~~~~~
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../probes/lttng-tracepoint-event-impl.h:43:2:
note: in expansion of macro ‘LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP’
43 | LTTNG_TRACEPOINT_EVENT_INSTANCE_MAP(map, name, map, PARAMS(proto),
PARAMS(args))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../probes/lttng-tracepoint-event-impl.h:85:2:
note: in expansion of macro ‘LTTNG_TRACEPOINT_EVENT_MAP’
85 | LTTNG_TRACEPOINT_EVENT_MAP(name, name, \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../instrumentation/events/lttng-module/block.h:279:1:
note: in expansion of macro ‘LTTNG_TRACEPOINT_EVENT’
279 | LTTNG_TRACEPOINT_EVENT(block_rq_requeue,
| ^~~~~~~~~~~~~~~~~~~~~~
In file included from ./include/trace/events/block.h:11,
from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/lttng-probe-block.c:19:
./include/linux/tracepoint.h:238:21: note: previous definition of
‘trace_block_rq_requeue’ was here
238 | static inline void trace_##name(proto) \
| ^~~~~~
./include/linux/tracepoint.h:413:2: note: in expansion of macro
‘__DECLARE_TRACE’
413 | __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args), \
| ^~~~~~~~~~~~~~~
./include/linux/tracepoint.h:549:2: note: in expansion of macro ‘DECLARE_TRACE’
549 | DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
| ^~~~~~~~~~~~~
./include/trace/events/block.h:73:1: note: in expansion of macro ‘TRACE_EVENT’
73 | TRACE_EVENT(block_rq_requeue,
| ^~~~~~~~~~~
In file included from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../probes/define_trace.h:87,
from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../instrumentation/events/lttng-module/block.h:1122,
from
/var/lib/dkms/lttng-modules/2.12.2/build/probes/lttng-probe-block.c:30:
/var/lib/dkms/lttng-modules/2.12.2/build/probes/../probes/lttng-tracepoint-event-impl.h:131:6:
error: conflicting types for ‘trace_block_rq_insert’.
131 | void trace_##_name(_proto);
| ^~~~~~
[Test plan]
Install lttng-modules-dkms to trigger the build errors.
[Fix]
Apply lttng upstream patches to properly support linux 5.11.
[Regresssion potential]
To properly support 5.11 the patches that are required are going to
touch the block layer code, uprobes and kprobes in lttng, so potentially
we could introduce specific lttng failures at tracing these subsystems
in old kernels. However these are all upstream patches, so it is
unlikely to trigger such failures.
** Affects: lttng-modules (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1918109
Title:
lttng-modules-dkms: build errors with linux >= 5.11
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