This patchset is cleaning up kallsyms code related to module buildid.
It is fixing an invalid access when printing backtraces, see [v1] for
more details:
+ 1st..4th patches are preparatory.
+ 5th and 6th patches are fixing bpf and ftrace related APIs.
+ 7th patch prevents a potential race.
Changes against [v2]:
+ Fixed typos in commit message [Alexei]
+ Added Acks [Alexei]
Changes against [v1]:
+ Added existing Reviewed-by tags.
+ Shuffled patches to update the kallsyms_lookup_buildid() initialization
code 1st.
+ Initialized also *modname and *modbuildid in kallsyms_lookup_buildid().
+ Renamed __bpf_address_lookup() to bpf_address_lookup() and used it
in kallsyms_lookup_buildid(). Did this instead of passing @modbuildid
parameter just to clear it.
[v1] https://lore.kernel.org/r/[email protected]
[v2] https://lore.kernel.org/r/[email protected]
Petr Mladek (7):
kallsyms: Clean up @namebuf initialization in
kallsyms_lookup_buildid()
kallsyms: Clean up modname and modbuildid initialization in
kallsyms_lookup_buildid()
module: Add helper function for reading module_buildid()
kallsyms: Cleanup code for appending the module buildid
kallsyms/bpf: Rename __bpf_address_lookup() to bpf_address_lookup()
kallsyms/ftrace: Set module buildid in ftrace_mod_address_lookup()
kallsyms: Prevent module removal when printing module name and buildid
arch/arm64/net/bpf_jit_comp.c | 2 +-
arch/powerpc/net/bpf_jit_comp.c | 2 +-
include/linux/filter.h | 26 ++----------
include/linux/ftrace.h | 6 ++-
include/linux/module.h | 9 ++++
kernel/bpf/core.c | 4 +-
kernel/kallsyms.c | 73 ++++++++++++++++++++++++---------
kernel/module/kallsyms.c | 9 +---
kernel/trace/ftrace.c | 5 ++-
9 files changed, 81 insertions(+), 55 deletions(-)
--
2.52.0
