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linux/fs/tracefs
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Deepanshu Kartikey 1704aaaf5d eventfs: Initialize ei->children and ei->list in init_ei() 
eventfs_create_dir() allocates the eventfs_inode and initializes it with
init_ei(). But this does not initialize the eventfs_inode list_heads. If
the eventfs_create_dir() fails due to memory pressure, it will call
free_ei() before it initialized the lists, and that checks to make sure
the eventfs_inode has no children. But because the list wasn't
initialized, it will give a false warning.

Fix it by moving the list initialization into init_ei().

Cc: stable@vger.kernel.org
Fixes: 5790b1fb3d ("eventfs: Remove eventfs_file and just use eventfs_inode")
Reported-by: syzbot+3ef80b4ed02226d04a06@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=3ef80b4ed02226d04a06
Link: https://patch.msgid.link/20260824144653.54044-1-kartikey406@gmail.com
Signed-off-by: Deepanshu Kartikey <kartikey406@gmail.com>
[ Rewrote change log ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
History 2026-08-24 16:42:57 -04:00
..
event_inode.c eventfs: Initialize ei->children and ei->list in init_ei() 2026-08-24 16:42:57 -04:00
inode.c tracefs fixes for v7.1: 2026-04-22 15:09:01 -07:00
internal.h eventfs: Use children field for rcu head and add memory barriers 2026-08-08 10:36:05 -04:00
Makefile eventfs: Implement eventfs dir creation functions 2023-07-30 18:13:33 -04:00