git: e8c54222acdb - stable/14 - inotify: do not call into namei() with a locked vnode

The branch stable/14 has been updated by markj:

URL: https://cgit.FreeBSD.org/src/commit/?id=e8c54222acdbb977c4164667627b6ee569d2eb90

commit e8c54222acdbb977c4164667627b6ee569d2eb90
Author:     Konstantin Belousov <[email protected]>
AuthorDate: 2025-07-10 07:15:13 +0000
Commit:     Mark Johnston <[email protected]>
CommitDate: 2026-08-05 15:15:16 +0000

    inotify: do not call into namei() with a locked vnode
    
    PR:     288127
    Reviewed by:    markj
    Fixes:  f1f230439fa48581f40a57f095627f667a9713c3
    Sponsored by:   The FreeBSD Foundation
    Differential revision:  https://reviews.freebsd.org/D51233
    
    (cherry picked from commit 63389aea24f15fe823c775960d77017f1a35f54b)
---
 sys/kern/vfs_inotify.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/kern/vfs_inotify.c b/sys/kern/vfs_inotify.c
index 8c9e7599b888..46971c78440c 100644
--- a/sys/kern/vfs_inotify.c
+++ b/sys/kern/vfs_inotify.c
@@ -757,9 +757,11 @@ vn_inotify_add_watch(struct vnode *vp, struct inotify_softc *sc, uint32_t mask,
 			 * directory if it's specified as a vnode.
 			 */
 			vrefact(vp);
+			VOP_UNLOCK(vp);
 			NDINIT_ATVP(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE,
 			    dp->d_name, vp);
 			error = namei(&nd);
+			vn_lock(vp, LK_SHARED | LK_RETRY);
 			if (error != 0)
 				break;
 			vn_irflag_set_cond(nd.ni_vp, VIRF_INOTIFY_PARENT);