Steven Rostedt (Google) 7ec535ed87 eventfs: Update all the eventfs_inodes from the events descriptor ... [ Upstream commit 340f0c7067 ] The change to update the permissions of the eventfs_inode had the misconception that using the tracefs_inode would find all the eventfs_inodes that have been updated and reset them on remount. The problem with this approach is that the eventfs_inodes are freed when they are no longer used (basically the reason the eventfs system exists). When they are freed, the updated eventfs_inodes are not reset on a remount because their tracefs_inodes have been freed. Instead, since the events directory eventfs_inode always has a tracefs_inode pointing to it (it is not freed when finished), and the events directory has a link to all its children, have the eventfs_remount() function only operate on the events eventfs_inode and have it descend into its children updating their uid and gids. Link: https://lore.kernel.org/all/CAK7LNARXgaWw3kH9JgrnH4vK6fr8LDkNKf3wq8NhMWJrVwJyVQ@mail.gmail.com/ Link: https://lore.kernel.org/linux-trace-kernel/20240523051539.754424703@goodmis.org Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Fixes: baa23a8d43 ("tracefs: Reset permissions on remount if permissions are options") Reported-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-21 14:38:22 +02:00
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event_inode.c	eventfs: Update all the eventfs_inodes from the events descriptor	2024-06-21 14:38:22 +02:00
inode.c	tracefs: Clear EVENT_INODE flag in tracefs_drop_inode()	2024-06-16 13:47:48 +02:00
internal.h	eventfs: Create eventfs_root_inode to store dentry	2024-06-12 11:12:35 +02:00
Makefile	eventfs: Implement eventfs dir creation functions	2023-07-30 18:13:33 -04:00