kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-11-08 18:57:22 +00:00
Code Issues Releases Packages Activity
linux/drivers/dma/idxd
History
Guenter Roeck d28c1b1566 dmaengine: Add missing cleanup on module unload 
Upstream commit b7cb9a0343 ("dmaengine: idxd: Fix refcount underflow
on module unload") fixes a refcount underflow by replacing the call to
idxd_cleanup() in the remove function with direct cleanup calls. That works
fine upstream. However, upstream removed support for IOMMU_DEV_FEAT_IOPF,
which is still supported in v6.12.y. The backport of commit b7cb9a0343
into v6.12.y misses the call to disable it. This results in a warning
backtrace when unloading and reloading the module.

WARNING: CPU: 0 PID: 665849 at drivers/pci/ats.c:337 pci_reset_pri+0x4c/0x60
...
RIP: 0010:pci_reset_pri+0xa7/0x130

Add the missing cleanup call to fix the problem.

Fixes: ce81905bec ("dmaengine: idxd: Fix refcount underflow on module unload")
Cc: Yi Sun <yi.sun@intel.com>
Cc: Shuai Xue <xueshuai@linux.alibaba.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Cc: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-10-23 16:20:48 +02:00
..
bus.c driver core: have match() callback in struct bus_type take a const * 2024-07-03 15:16:54 +02:00
cdev.c dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using 2025-07-06 11:01:33 +02:00
compat.c driver core: make [device_]driver_attach take a const * 2024-06-20 12:51:42 +02:00
debugfs.c dmaengine: idxd: Convert spinlock to mutex to lock evl workqueue 2024-04-07 13:31:44 +05:30
defaults.c dmaengine: idxd: Add support for device/wq defaults 2023-12-15 17:52:53 +08:00
device.c dmaengine: idxd: Convert spinlock to mutex to lock evl workqueue 2024-04-07 13:31:44 +05:30
dma.c dmaengine: add channel device name to channel registration 2024-06-11 23:55:34 +05:30
idxd.h dmaengine: idxd: Clean up cpumask and hotplug for perfmon 2024-09-10 11:44:13 +02:00
init.c dmaengine: Add missing cleanup on module unload 2025-10-23 16:20:48 +02:00
irq.c dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list 2024-06-11 21:37:25 +05:30
Makefile module: Convert default symbol namespace to string literal 2025-02-08 09:57:05 +01:00
perfmon.c dmaengine updates for v6.12 2024-09-23 14:08:08 -07:00
perfmon.h dmaengine: idxd: Add IDXD performance monitor support 2021-04-25 21:46:12 +05:30
registers.h VFIO: Add the SPR_DSA and SPR_IAX devices to the denylist 2024-05-13 14:07:33 +00:00
submit.c dmaengine: Fix spelling mistakes 2024-09-02 13:56:01 +05:30
sysfs.c dmaengine: idxd: add a write() method for applications to submit work 2024-05-13 14:07:45 +00:00