Merge tag 'io_uring-7.3-20261002' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linuxgrafted

Pull io_uring fixes from Jens Axboe:

 - Fix a task_work add use-after-free with SQPOLL.

   The sqpoll thread could pop and complete the last request while
   io_req_normal_work_add() was still looking at them after the mpscq
   push.

   Use the same approach as DEFER_TASKRUN to protect from that, holding
   an RCU read lock across the add, and have exit wait for an RCU grace
   period for SQPOLL rings as well.

 - CQE32 ring fixes: correct the free entry check for 32b CQEs, zero the
   big_cqe for aux CQEs, and only post the dummy skip CQE on CQE_MIXED
   rings

 - Mark the source filter table as COW when cloning bpf filters, so
   registering another filter on the source doesn't modify the shared
   table in place

 - Initialize the task context before running the BPF loop

 - Requeue zcrx multishot receives stopped by a local resource

 - End a TX_TIMESTAMP multishot cmd when the CQ is full (lollipopkit)

* tag 'io_uring-7.3-20261002' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
  io_uring: fix task_work add use-after-free with SQPOLL
  io_uring/cmd_net: end TX_TIMESTAMP multishot when the CQ is full
  io_uring/zcrx: requeue multishot receives stopped by a local resource
  io_uring: initialize task context before running the BPF loop
  io_uring: zero big_cqe for aux CQEs on CQE32 rings
  io_uring: fix free entry check for 32b CQEs on CQE32 rings
  io_uring: only post the dummy skip CQE on CQE_MIXED rings
  io_uring/bpf_filter: mark source as COW when cloning filters

1 files changed, 55 insertions, 0 deletions

diff --git a/arch/um/drivers/Makefile b/arch/um/drivers/Makefile
new file mode 100644
index 000000000..36dc57840
--- /dev/null
+++ b/arch/um/drivers/Makefile
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0
+# 
+# Copyright (C) 2000, 2002, 2003 Jeff Dike (jdike@karaya.com)
+#
+
+# pcap is broken in 2.5 because kbuild doesn't allow pcap.a to be linked
+# in to pcap.o
+
+vector-objs := vector_kern.o vector_user.o vector_transports.o
+mconsole-objs := mconsole_kern.o mconsole_user.o
+hostaudio-objs := hostaudio_kern.o
+ubd-objs := ubd_kern.o ubd_user.o
+port-objs := port_kern.o port_user.o
+harddog-objs := harddog_kern.o
+harddog-builtin-$(CONFIG_UML_WATCHDOG) := harddog_user.o harddog_user_exp.o
+rtc-objs := rtc_kern.o rtc_user.o
+vfio_uml-objs := vfio_kern.o vfio_user.o
+
+#XXX: The call below does not work because the flags are added before the
+# object name, so nothing from the library gets linked.
+#$(call if_changed,ld)
+
+# When the above is fixed, don't forget to add this too!
+#targets += $(obj)/pcap.o
+
+obj-y := stdio_console.o fd.o chan_kern.o chan_user.o line.o
+obj-$(CONFIG_SSL) += ssl.o
+obj-$(CONFIG_STDERR_CONSOLE) += stderr_console.o
+
+obj-$(CONFIG_UML_NET_VECTOR) += vector.o
+obj-$(CONFIG_MCONSOLE) += mconsole.o
+obj-$(CONFIG_BLK_DEV_UBD) += ubd.o 
+obj-$(CONFIG_UML_SOUND) += hostaudio.o
+obj-$(CONFIG_NULL_CHAN) += null.o 
+obj-$(CONFIG_PORT_CHAN) += port.o
+obj-$(CONFIG_PTY_CHAN) += pty.o
+obj-$(CONFIG_TTY_CHAN) += tty.o 
+obj-$(CONFIG_XTERM_CHAN) += xterm.o xterm_kern.o
+obj-$(CONFIG_UML_WATCHDOG) += harddog.o
+obj-y += $(harddog-builtin-y) $(harddog-builtin-m)
+obj-$(CONFIG_BLK_DEV_COW_COMMON) += cow_user.o
+obj-$(CONFIG_UML_RANDOM) += random.o
+obj-$(CONFIG_VIRTIO_UML) += virtio_uml.o
+obj-$(CONFIG_UML_RTC) += rtc.o
+obj-$(CONFIG_UML_PCI) += virt-pci.o
+obj-$(CONFIG_UML_PCI_OVER_VIRTIO) += virtio_pcidev.o
+obj-$(CONFIG_UML_PCI_OVER_VFIO) += vfio_uml.o
+
+# pcap_user.o must be added explicitly.
+USER_OBJS := fd.o null.o pty.o tty.o xterm.o vector_user.o
+CFLAGS_null.o = -DDEV_NULL=$(DEV_NULL_PATH)
+
+CFLAGS_xterm.o += '-DCONFIG_XTERM_CHAN_DEFAULT_EMULATOR="$(CONFIG_XTERM_CHAN_DEFAULT_EMULATOR)"'
+
+include $(srctree)/arch/um/scripts/Makefile.rules