kernel/linux.git/drivers/usb/misc/yurex.c, branch linux-7.1.y

usb: yurex: fix race in probe

2026-02-23T19:25:07+00:00

The bbu member of the descriptor must be set to the value standing for uninitialized values before the URB whose completion handler sets bbu is submitted. Otherwise there is a window during which probing can overwrite already retrieved data. Cc: stable Signed-off-by: Oliver Neukum Link: https://patch.msgid.link/20260209143720.1507500-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

Merge 6.12-rc3 into usb-next

2024-10-14T06:03:44+00:00

We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman

USB: yurex: kill needless initialization in yurex_read

2024-10-07T10:07:14+00:00

This prevented the compiler from catching the patch that broke the driver. Signed-off-by: Oliver Neukum Link: https://lore.kernel.org/r/20241007094004.242122-2-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman

Revert "usb: yurex: Replace snprintf() with the safer scnprintf() variant"

2024-10-07T10:07:10+00:00

This reverts commit 86b20af11e84c26ae3fde4dcc4f490948e3f8035. This patch leads to passing 0 to simple_read_from_buffer() as a fifth argument, turning the read method into a nop. The change is fundamentally flawed, as it breaks the driver. Signed-off-by: Oliver Neukum Cc: stable Link: https://lore.kernel.org/r/20241007094004.242122-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman

usb: yurex: make waiting on yurex_write interruptible

2024-10-04T13:16:17+00:00

The IO yurex_write() needs to wait for in order to have a device ready for writing again can take a long time time. Consequently the sleep is done in an interruptible state. Therefore others waiting for yurex_write() itself to finish should use mutex_lock_interruptible. Signed-off-by: Oliver Neukum Fixes: 6bc235a2e24a5 ("USB: add driver for Meywa-Denki & Kayac YUREX") Rule: add Link: https://lore.kernel.org/stable/20240924084415.300557-1-oneukum%40suse.com Link: https://lore.kernel.org/r/20240924084415.300557-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman

USB: misc: yurex: fix race between read and write

2024-09-13T05:54:54+00:00

The write code path touches the bbu member in a non atomic manner without taking the spinlock. Fix it. The bug is as old as the driver. Signed-off-by: Oliver Neukum CC: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240912132126.1034743-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman

usb: misc: add missing MODULE_DESCRIPTION() macros

2024-06-20T17:18:24+00:00

With ARCH=x86, make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/ezusb.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/isight_firmware.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/usb/misc/yurex.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson Link: https://lore.kernel.org/r/20240611-md-drivers-usb-misc-v1-1-98475a5aa8ef@quicinc.com Signed-off-by: Greg Kroah-Hartman

usb: yurex: Fix inconsistent locking bug in yurex_read()

2024-01-02T13:41:51+00:00

Unlock before returning on the error path. Fixes: 86b20af11e84 ("usb: yurex: Replace snprintf() with the safer scnprintf() variant") Reported-by: Dan Carpenter Reported-by: kernel test robot Closes: https://lore.kernel.org/r/202312170252.3udgrIcP-lkp@intel.com/ Signed-off-by: Harshit Mogalapalli Link: https://lore.kernel.org/r/20231219063639.450994-1-harshit.m.mogalapalli@oracle.com Signed-off-by: Greg Kroah-Hartman