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linux-stable/drivers/parisc
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Shang XiaoJing 3505c187b8 parisc: led: Fix potential null-ptr-deref in start_task() 
commit 41f563ab3c upstream.

start_task() calls create_singlethread_workqueue() and not checked the
ret value, which may return NULL. And a null-ptr-deref may happen:

start_task()
    create_singlethread_workqueue() # failed, led_wq is NULL
    queue_delayed_work()
        queue_delayed_work_on()
            __queue_delayed_work()  # warning here, but continue
                __queue_work()      # access wq->flags, null-ptr-deref

Check the ret value and return -ENOMEM if it is NULL.

Fixes: 3499495205 ("[PARISC] Use work queue in LED/LCD driver instead of tasklet.")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-14 10:16:36 +01:00
..
asp.c
ccio-dma.c parisc: ccio-dma: Add missing iounmap in error path in ccio_probe() 2022-09-23 14:16:58 +02:00
dino.c parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-04-13 21:01:03 +02:00
eisa.c
eisa_eeprom.c
eisa_enumerator.c
gsc.c parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-04-13 21:01:03 +02:00
gsc.h parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-04-13 21:01:03 +02:00
hppb.c
iommu-helpers.h
iommu.h
iosapic.c parisc: Export iosapic_serial_irq() symbol for serial port driver 2022-11-10 18:14:27 +01:00
iosapic_private.h
Kconfig
lasi.c parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-04-13 21:01:03 +02:00
lba_pci.c parisc: Check the return value of ioremap() in lba_driver_probe() 2022-08-21 15:15:23 +02:00
led.c parisc: led: Fix potential null-ptr-deref in start_task() 2023-01-14 10:16:36 +01:00
Makefile
pdc_stable.c
power.c
README.dino
sba_iommu.c
superio.c
wax.c parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-04-13 21:01:03 +02:00

README.dino 

/*
** HP VISUALIZE Workstation PCI Bus Defect
**
** "HP has discovered a potential system defect that can affect
** the behavior of five models of HP VISUALIZE workstations when
** equipped with third-party or customer-installed PCI I/O expansion
** cards. The defect is limited to the HP C180, C160, C160L, B160L,
** and B132L VISUALIZE workstations, and will only be encountered
** when data is transmitted through PCI I/O expansion cards on the
** PCI bus. HP-supplied graphics cards that utilize the PCI bus are
** not affected."
**
** http://h20000.www2.hp.com/bizsupport/TechSupport/Home.jsp?locale=en_US&prodTypeId=12454&prodSeriesId=44443
**
**	Product		First Good Serial Number
**  C200/C240 (US)	US67350000
**B132L+/B180 (US)	US67390000
**   C200 (Europe)	3713G01000
**  B180L (Europe)	3720G01000
**
** Note that many boards were fixed/replaced under a free replacement
** program. Assume a machine is only "suspect" until proven otherwise.
**
** "The pci_check program will also be available as application
**  patch PHSS_12295"
*/