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| author | David Carlier <devnexen@gmail.com> | 2026-04-18 18:22:50 +0300 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2026-04-19 02:14:37 +0300 |
| commit | f67950b2887fa10df50c4317a1fe98a65bc6875b (patch) | |
| tree | b5aae677487d9053c68c30098224e005907a4deb | |
| parent | 43cec30c44764c4b1401fdeb48bfd18c3fc7eff8 (diff) | |
| download | linux-f67950b2887fa10df50c4317a1fe98a65bc6875b.tar.xz | |
eventfs: Use list_add_tail_rcu() for SRCU-protected children list
Commit d2603279c7d6 ("eventfs: Use list_del_rcu() for SRCU protected
list variable") converted the removal side to pair with the
list_for_each_entry_srcu() walker in eventfs_iterate(). The insertion
in eventfs_create_dir() was left as a plain list_add_tail(), which on
weakly-ordered architectures can expose a new entry to the SRCU reader
before its list pointers and fields are observable.
Use list_add_tail_rcu() so the publication pairs with the existing
list_del_rcu() and list_for_each_entry_srcu().
Fixes: 43aa6f97c2d0 ("eventfs: Get rid of dentry pointers without refcounts")
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260418152251.199343-1-devnexen@gmail.com
Signed-off-by: David Carlier <devnexen@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | fs/tracefs/event_inode.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/tracefs/event_inode.c b/fs/tracefs/event_inode.c index 81df94038f2e..8dd554508828 100644 --- a/fs/tracefs/event_inode.c +++ b/fs/tracefs/event_inode.c @@ -706,7 +706,7 @@ struct eventfs_inode *eventfs_create_dir(const char *name, struct eventfs_inode scoped_guard(mutex, &eventfs_mutex) { if (!parent->is_freed) - list_add_tail(&ei->list, &parent->children); + list_add_tail_rcu(&ei->list, &parent->children); } /* Was the parent freed? */ if (list_empty(&ei->list)) { |