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| author | Boqun Feng <boqun.feng@gmail.com> | 2021-06-19 01:01:08 +0800 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-06-22 16:42:07 +0200 |
| commit | d4c157c7b1a67a0844a904baaca9a840c196c103 (patch) | |
| tree | e716bdd8c65297b0911335f89f765ab96dc2f096 /kernel/bpf/bpf_iter.c | |
| parent | 69c7a5fb2482636f525f016c8333fdb9111ecb9d (diff) | |
| download | linux-d4c157c7b1a67a0844a904baaca9a840c196c103.tar.bz2 | |
locking/lockdep: Remove the unnecessary trace saving
In print_bad_irq_dependency(), save_trace() is called to set the ->trace
for @prev_root as the current call trace, however @prev_root corresponds
to the the held lock, which may not be acquired in current call trace,
therefore it's wrong to use save_trace() to set ->trace of @prev_root.
Moreover, with our adjustment of printing backwards dependency path, the
->trace of @prev_root is unncessary, so remove it.
Reported-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210618170110.3699115-3-boqun.feng@gmail.com
Diffstat (limited to 'kernel/bpf/bpf_iter.c')
0 files changed, 0 insertions, 0 deletions