sched_ext: Add __printf format attributes to scx_vexit() and bstr formatters

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scx_vexit() forwards (fmt, args) to vscnprintf(); bstr_format() and
__bstr_format() forward fmt to bstr_printf(); the BPF kfunc wrappers
scx_bpf_exit_bstr(), scx_bpf_error_bstr() and scx_bpf_dump_bstr() in
turn forward fmt to those formatters. None of them have __printf(),
so clang -Wmissing-format-attribute fires on the forwarded calls and
C-side callers don't get format-string checking.

Annotate the six functions with __printf(N, 0) matching the fmt
parameter position in each.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/all/202605041112.Y6OG7v9r-lkp@intel.com/
Signed-off-by: Tejun Heo <tj@kernel.org>

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This commit is contained in:

Tejun Heo 2026-05-04 11:21:56 -10:00

parent 4c81b2b2a2

commit d91b36de53

2 changed files with 8 additions and 2 deletions

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5

kernel/sched/ext.c

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5

kernel/sched/ext_internal.h

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