The branch main has been updated by bz: URL: https://cgit.FreeBSD.org/src/commit/?id=4b32fdb4a614de602d288ac5a414cb43e9f2163e
commit 4b32fdb4a614de602d288ac5a414cb43e9f2163e Author: Bjoern A. Zeeb <[email protected]> AuthorDate: 2026-01-29 11:16:50 +0000 Commit: Bjoern A. Zeeb <[email protected]> CommitDate: 2026-01-29 19:35:23 +0000 lindebugfs: check that name is set as otherwise pfs_alloc_node_flags() panics I have hit the case multiple times that some LinuxKPI field may not be set during driver bringup and lindebugfs would cause a panic. The backtrace goes like: strlen() at strlen+0x54 pfs_create_dir() at pfs_create_dir+0x41 debugfs_create_dir() at debugfs_create_dir+0xa1 ... While the problem is clearly in LinuxKPI or the driver, we likely should at least add an assert to pfs_create_dir() if name is NULL like we have for pfs_add_node() but for lindebugfs at least make this a graceful error and continue without creating the dir instead of panicing. Sponsored by: The FreeBSD Foundation MFC after: 3 days Reviewed by: kevans Differential Revision: https://reviews.freebsd.org/D54944 --- sys/compat/lindebugfs/lindebugfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sys/compat/lindebugfs/lindebugfs.c b/sys/compat/lindebugfs/lindebugfs.c index 8cddc6f390bc..857546f61e55 100644 --- a/sys/compat/lindebugfs/lindebugfs.c +++ b/sys/compat/lindebugfs/lindebugfs.c @@ -272,6 +272,9 @@ debugfs_create_dir(const char *name, struct dentry *parent) struct dentry *dnode; struct pfs_node *pnode; + if (name == NULL) + return (NULL); + dm = malloc(sizeof(*dm), M_DFSINT, M_NOWAIT | M_ZERO); if (dm == NULL) return (NULL);
