[GIT PULL 01/19 for v7.4] ipc misc

[Christian Brauner]

Hey Linus,

/* Summary */

This fixes a leak in mqueue. A task in another thread group sharing the
file table could register an mq_notify() and exit without closing the
queue. The registration was never torn down and pinned the notification
skb, the netlink socket, a pid reference and a user namespace reference
forever. Stale registrations are released on inode eviction now.

/* Testing */

No build failures or warnings were observed.

/* Conflicts */

Merge conflicts with mainline
=============================

No known conflicts.

Merge conflicts with other trees
================================

No known conflicts.

The following changes since commit cee9395acd8043be0644b25c34bfa86623f2b935:

  Linux 7.3-rc1 (2026-08-30 13:34:40 -0700)

are available in the Git repository at:

  git@xxxxxxxxxxxxxxxxxxx:pub/scm/linux/kernel/git/vfs/vfs tags/ipc-7.4-rc1.misc

for you to fetch changes up to eb85469f0dd69ca145d63117450e14c31f67f698:

  ipc/mqueue: release notification resources during inode eviction (2026-08-31 12:30:30 +0200)

----------------------------------------------------------------
ipc-7.4-rc1.misc

Please consider pulling these changes from the signed ipc-7.4-rc1.misc tag.

Thanks!
Christian

----------------------------------------------------------------
Daehyeon Ko (1):
      ipc/mqueue: release notification resources during inode eviction

 ipc/mqueue.c | 7 +++++++
 1 file changed, 7 insertions(+)