linux-stable.git/drivers/net/arcnet, branch v5.4.232

net: arcnet: com20020: Fix null-ptr-deref in com20020pci_probe()

2022-03-08T18:07:48+00:00

commit bd6f1fd5d33dfe5d1b4f2502d3694a7cc13f166d upstream.

During driver initialization, the pointer of card info, i.e. the
variable 'ci' is required. However, the definition of
'com20020pci_id_table' reveals that this field is empty for some
devices, which will cause null pointer dereference when initializing
these devices.

The following log reveals it:

[    3.973806] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]
[    3.973819] RIP: 0010:com20020pci_probe+0x18d/0x13e0 [com20020_pci]
[    3.975181] Call Trace:
[    3.976208]  local_pci_probe+0x13f/0x210
[    3.977248]  pci_device_probe+0x34c/0x6d0
[    3.977255]  ? pci_uevent+0x470/0x470
[    3.978265]  really_probe+0x24c/0x8d0
[    3.978273]  __driver_probe_device+0x1b3/0x280
[    3.979288]  driver_probe_device+0x50/0x370

Fix this by checking whether the 'ci' is a null pointer first.

Fixes: 8c14f9c70327 ("ARCNET: add com20020 PCI IDs with metadata")
Signed-off-by: Zheyu Ma 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

drivers: net: Fix Kconfig indentation

2019-09-26T06:56:17+00:00

Adjust indentation from spaces to tab (+optional two spaces) as in
coding style with command like:
    $ sed -e 's/^        /\t/' -i */Kconfig

Signed-off-by: Krzysztof Kozlowski 
Acked-by: Kalle Valo 
Reviewed-by: Leon Romanovsky 
Signed-off-by: David S. Miller

arcnet: provide a buffer big enough to actually receive packets

2019-09-24T14:48:31+00:00

struct archdr is only big enough to hold the header of various types of
arcnet packets. So to provide enough space to hold the data read from
hardware provide a buffer large enough to hold a packet with maximal
size.

The problem was noticed by the stack protector which makes the kernel
oops.

Signed-off-by: Uwe Kleine-König 
Acked-by: Michael Grzeschik 
Signed-off-by: David S. Miller

arcnet: capmode: remove redundant assignment to pointer pkt

2019-08-30T21:14:46+00:00

Pointer pkt is being initialized with a value that is never read
and pkt is being re-assigned a little later on. The assignment is
redundant and hence can be removed.

Addresses-Coverity: ("Ununsed value")
Signed-off-by: Colin Ian King 
Signed-off-by: David S. Miller

arcnet: com20020-isa: Mark expected switch fall-throughs

2019-07-29T17:23:59+00:00

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings:

drivers/net/arcnet/com20020-isa.c: warning: this statement may fall
through [-Wimplicit-fallthrough=]:  => 205:13, 203:10, 209:7, 201:11,
207:8

Reported-by: Geert Uytterhoeven 
Signed-off-by: Gustavo A. R. Silva 
Reviewed-by: Kees Cook 
Signed-off-by: David S. Miller

arcnet: arc-rimi: Mark expected switch fall-throughs

2019-07-29T16:38:34+00:00

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: powerpc allyesconfig):

drivers/net/arcnet/arc-rimi.c: In function 'arcrimi_setup':
include/linux/printk.h:304:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/arcnet/arc-rimi.c:365:3: note: in expansion of macro 'pr_err'
   pr_err("Too many arguments\n");
   ^~~~~~
drivers/net/arcnet/arc-rimi.c:366:2: note: here
  case 3:  /* Node ID */
  ^~~~
drivers/net/arcnet/arc-rimi.c:367:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
   node = ints[3];
   ~~~~~^~~~~~~~~
drivers/net/arcnet/arc-rimi.c:368:2: note: here
  case 2:  /* IRQ */
  ^~~~
drivers/net/arcnet/arc-rimi.c:369:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   irq = ints[2];
   ~~~~^~~~~~~~~
drivers/net/arcnet/arc-rimi.c:370:2: note: here
  case 1:  /* IO address */
  ^~~~

Reported-by: Stephen Rothwell 
Signed-off-by: Gustavo A. R. Silva 
Reviewed-by: Kees Cook 
Signed-off-by: David S. Miller

arcnet: com90io: Mark expected switch fall-throughs

2019-07-29T16:38:34+00:00

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: powerpc allyesconfig):

drivers/net/arcnet/com90io.c: In function 'com90io_setup':
include/linux/printk.h:304:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/arcnet/com90io.c:365:3: note: in expansion of macro 'pr_err'
   pr_err("Too many arguments\n");
   ^~~~~~
drivers/net/arcnet/com90io.c:366:2: note: here
  case 2:  /* IRQ */
  ^~~~
drivers/net/arcnet/com90io.c:367:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   irq = ints[2];
   ~~~~^~~~~~~~~
drivers/net/arcnet/com90io.c:368:2: note: here
  case 1:  /* IO address */
  ^~~~

Reported-by: Stephen Rothwell 
Signed-off-by: Gustavo A. R. Silva 
Reviewed-by: Kees Cook 
Signed-off-by: David S. Miller

arcnet: com90xx: Mark expected switch fall-throughs

2019-07-29T16:38:34+00:00

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: powerpc allyesconfig):

drivers/net/arcnet/com90xx.c: In function 'com90xx_setup':
include/linux/printk.h:304:2: warning: this statement may fall through [-Wimplicit-fallthrough=]
  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/arcnet/com90xx.c:695:3: note: in expansion of macro 'pr_err'
   pr_err("Too many arguments\n");
   ^~~~~~
drivers/net/arcnet/com90xx.c:696:2: note: here
  case 3:  /* Mem address */
  ^~~~
drivers/net/arcnet/com90xx.c:697:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
   shmem = ints[3];
   ~~~~~~^~~~~~~~~
drivers/net/arcnet/com90xx.c:698:2: note: here
  case 2:  /* IRQ */
  ^~~~
drivers/net/arcnet/com90xx.c:699:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
   irq = ints[2];
   ~~~~^~~~~~~~~
drivers/net/arcnet/com90xx.c:700:2: note: here
  case 1:  /* IO address */
  ^~~~

Reported-by: Stephen Rothwell 
Signed-off-by: Gustavo A. R. Silva 
Reviewed-by: Kees Cook 
Signed-off-by: David S. Miller

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman