linux-stable.git/drivers/staging, branch v5.16.2 Linux kernel stable tree staging: greybus: fix stack size warning with UBSAN 2022-01-16T08:11:15+00:00 Arnd Bergmann arnd@arndb.de 2021-12-09T19:51:42+00:00 1616f3462a85d633a5dec41cbffff7d314f0bfd0 commit 144779edf598e0896302c35a0926ef0b68f17c4b upstream. clang warns about excessive stack usage in this driver when UBSAN is enabled: drivers/staging/greybus/audio_topology.c:977:12: error: stack frame size of 1836 bytes in function 'gbaudio_tplg_create_widget' [-Werror,-Wframe-larger-than=] Rework this code to no longer use compound literals for initializing the structure in each case, but instead keep the common bits in a preallocated constant array and copy them as needed. Link: https://github.com/ClangBuiltLinux/linux/issues/1535 Link: https://lore.kernel.org/r/20210103223541.2790855-1-arnd@kernel.org/ Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Alex Elder <elder@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> [nathan: Address review comments from v1] Signed-off-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20211209195141.1165233-1-nathan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 144779edf598e0896302c35a0926ef0b68f17c4b upstream.

clang warns about excessive stack usage in this driver when
UBSAN is enabled:

drivers/staging/greybus/audio_topology.c:977:12: error: stack frame size of 1836 bytes in function 'gbaudio_tplg_create_widget' [-Werror,-Wframe-larger-than=]

Rework this code to no longer use compound literals for
initializing the structure in each case, but instead keep
the common bits in a preallocated constant array and copy
them as needed.

Link: https://github.com/ClangBuiltLinux/linux/issues/1535
Link: https://lore.kernel.org/r/20210103223541.2790855-1-arnd@kernel.org/
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[nathan: Address review comments from v1]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20211209195141.1165233-1-nathan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: r8188eu: switch the led off during deinit 2022-01-16T08:11:11+00:00 Martin Kaiser martin@kaiser.cx 2021-12-26T19:55:36+00:00 e10b6a5f2a9f3f57706485e607ef02a463a00bc2 commit 9d36de31130542fc060f7cd17e72db670202c682 upstream. When the driver is unloaded or when the system goes into standby mode, DeInitLed871x is called to stop the led layer. In this case, we stop the blinking worker but we do not switch the led off explicitly. On my system, I can go into standby mode with the LED enabled. Add a call to SwLedOff to fix this. Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver") Cc: stable@vger.kernel.org Signed-off-by: Martin Kaiser <martin@kaiser.cx> Link: https://lore.kernel.org/r/20211226195556.159471-2-martin@kaiser.cx Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 9d36de31130542fc060f7cd17e72db670202c682 upstream.

When the driver is unloaded or when the system goes into standby mode,
DeInitLed871x is called to stop the led layer. In this case, we stop
the blinking worker but we do not switch the led off explicitly. On my
system, I can go into standby mode with the LED enabled.

Add a call to SwLedOff to fix this.

Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Cc: stable@vger.kernel.org
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20211226195556.159471-2-martin@kaiser.cx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() 2021-11-17T13:08:57+00:00 Dan Carpenter dan.carpenter@oracle.com 2021-11-17T07:20:16+00:00 b535917c51acc97fb0761b1edec85f1f3d02bda4 The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that. Fixes: 66898177e7e5 ("staging: rtl8192e: Fix unload/reload problem") Cc: stable <stable@vger.kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20211117072016.GA5237@kili Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The free_rtllib() function frees the "dev" pointer so there is use
after free on the next line.  Re-arrange things to avoid that.

Fixes: 66898177e7e5 ("staging: rtl8192e: Fix unload/reload problem")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211117072016.GA5237@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: greybus: Add missing rwsem around snd_ctl_remove() calls 2021-11-17T13:08:38+00:00 Takashi Iwai tiwai@suse.de 2021-11-16T07:20:27+00:00 ffcf7ae90f4489047d7b076539ba207024dea5f6 snd_ctl_remove() has to be called with card->controls_rwsem held (when called after the card instantiation). This patch adds the missing rwsem calls around it. Fixes: 510e340efe0c ("staging: greybus: audio: Add helper APIs for dynamic audio modules") Cc: stable <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://lore.kernel.org/r/20211116072027.18466-1-tiwai@suse.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
snd_ctl_remove() has to be called with card->controls_rwsem held (when
called after the card instantiation).  This patch adds the missing
rwsem calls around it.

Fixes: 510e340efe0c ("staging: greybus: audio: Add helper APIs for dynamic audio modules")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20211116072027.18466-1-tiwai@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: Remove Netlogic XLP network driver 2021-11-15T09:24:42+00:00 Rob Herring robh@kernel.org 2021-11-09T16:14:01+00:00 47ac6f567c28581f7729bd1f168639f8f066a2eb The Netlogic XLP platform was removed in commit 95b8a5e0111a ("MIPS: Remove NETLOGIC support"), so this driver is now dead. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ganesan Ramalingam <ganesanr@broadcom.com> Cc: Jayachandran Chandrashekaran Nair <jchandra@broadcom.com> Cc: linux-staging@lists.linux.dev Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20211109161401.2204280-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
The Netlogic XLP platform was removed in commit 95b8a5e0111a ("MIPS:
Remove NETLOGIC support"), so this driver is now dead.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ganesan Ramalingam <ganesanr@broadcom.com>
Cc: Jayachandran Chandrashekaran Nair <jchandra@broadcom.com>
Cc: linux-staging@lists.linux.dev
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211109161401.2204280-1-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: r8188eu: fix a memory leak in rtw_wx_read32() 2021-11-15T09:23:33+00:00 Dan Carpenter dan.carpenter@oracle.com 2021-11-09T11:49:36+00:00 be4ea8f383551b9dae11b8dfff1f38b3b5436e9a Free "ptmp" before returning -EINVAL. Fixes: 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver") Cc: stable <stable@vger.kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20211109114935.GC16587@kili Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Free "ptmp" before returning -EINVAL.

Fixes: 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211109114935.GC16587@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: r8188eu: use GFP_ATOMIC under spinlock 2021-11-15T09:23:16+00:00 Michael Straube straube.linux@gmail.com 2021-11-08T10:55:37+00:00 4a293eaf92a510ff688dc7b3f0815221f99c9d1b In function rtw_report_sec_ie() kzalloc() is called under a spinlock, so the allocation have to be atomic. Call tree: -> rtw_select_and_join_from_scanned_queue() <- takes a spinlock -> rtw_joinbss_cmd() -> rtw_restruct_sec_ie() -> rtw_report_sec_ie() Fixes: 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver") Cc: stable <stable@vger.kernel.org> Signed-off-by: Michael Straube <straube.linux@gmail.com> Link: https://lore.kernel.org/r/20211108105537.31655-1-straube.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
In function rtw_report_sec_ie() kzalloc() is called under a spinlock,
so the allocation have to be atomic.

Call tree:

-> rtw_select_and_join_from_scanned_queue() <- takes a spinlock
   -> rtw_joinbss_cmd()
      -> rtw_restruct_sec_ie()
         -> rtw_report_sec_ie()

Fixes: 2b42bd58b321 ("staging: r8188eu: introduce new os_dep dir for RTL8188eu driver")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20211108105537.31655-1-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: r8188eu: Use kzalloc() with GFP_ATOMIC in atomic context 2021-11-15T09:22:34+00:00 Fabio M. De Francesco fmdefrancesco@gmail.com 2021-11-01T19:18:47+00:00 c15a059f85de49c542e6ec2464967dd2b2aa18f6 Use the GFP_ATOMIC flag of kzalloc() with two memory allocation in report_del_sta_event(). This function is called while holding spinlocks, therefore it is not allowed to sleep. With the GFP_ATOMIC type flag, the allocation is high priority and must not sleep. This issue is detected by Smatch which emits the following warning: "drivers/staging/r8188eu/core/rtw_mlme_ext.c:6848 report_del_sta_event() warn: sleeping in atomic context". After the change, the post-commit hook output the following message: "CHECK: Prefer kzalloc(sizeof(*pcmd_obj)...) over kzalloc(sizeof(struct cmd_obj)...)". According to the above "CHECK", use the preferred style in the first kzalloc(). Fixes: 79f712ea994d ("staging: r8188eu: Remove wrappers for kalloc() and kzalloc()") Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver") Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com> Link: https://lore.kernel.org/r/20211101191847.6749-1-fmdefrancesco@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable <stable@vger.kernel.org> 
Use the GFP_ATOMIC flag of kzalloc() with two memory allocation in
report_del_sta_event(). This function is called while holding spinlocks,
therefore it is not allowed to sleep. With the GFP_ATOMIC type flag, the
allocation is high priority and must not sleep.

This issue is detected by Smatch which emits the following warning:
"drivers/staging/r8188eu/core/rtw_mlme_ext.c:6848 report_del_sta_event()
warn: sleeping in atomic context".

After the change, the post-commit hook output the following message:
"CHECK: Prefer kzalloc(sizeof(*pcmd_obj)...) over
kzalloc(sizeof(struct cmd_obj)...)".

According to the above "CHECK", use the preferred style in the first
kzalloc().

Fixes: 79f712ea994d ("staging: r8188eu: Remove wrappers for kalloc() and kzalloc()")
Fixes: 15865124feed ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20211101191847.6749-1-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable <stable@vger.kernel.org>
staging/fbtft: Fix backlight 2021-11-15T09:21:48+00:00 Noralf Trønnes noralf@tronnes.org 2021-11-05T20:43:58+00:00 7865dd24934ad580d1bcde8f63c39f324211a23b Commit b4a1ed0cd18b ("fbdev: make FB_BACKLIGHT a tristate") forgot to update fbtft breaking its backlight support when FB_BACKLIGHT is a module. Since FB_TFT selects FB_BACKLIGHT there's no need for this conditional so just remove it and we're good. Fixes: b4a1ed0cd18b ("fbdev: make FB_BACKLIGHT a tristate") Cc: <stable@vger.kernel.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Noralf Trønnes <noralf@tronnes.org> Link: https://lore.kernel.org/r/20211105204358.2991-1-noralf@tronnes.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Commit b4a1ed0cd18b ("fbdev: make FB_BACKLIGHT a tristate") forgot to
update fbtft breaking its backlight support when FB_BACKLIGHT is a module.

Since FB_TFT selects FB_BACKLIGHT there's no need for this conditional
so just remove it and we're good.

Fixes: b4a1ed0cd18b ("fbdev: make FB_BACKLIGHT a tristate")
Cc: <stable@vger.kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://lore.kernel.org/r/20211105204358.2991-1-noralf@tronnes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
staging: r8188eu: Fix breakage introduced when 5G code was removed 2021-11-15T09:20:35+00:00 Larry Finger Larry.Finger@lwfinger.net 2021-11-07T17:35:43+00:00 d5f0b804368951b6b4a77d2f14b5bb6a04b0e011 In commit 221abd4d478a ("staging: r8188eu: Remove no more necessary definitions and code"), two entries were removed from RTW_ChannelPlanMap[], but not replaced with zeros. The position within this table is important, thus the patch broke systems operating in regulatory domains osted later than entry 0x13 in the table. Unfortunately, the FCC entry comes before that point and most testers did not see this problem. Fixes: 221abd4d478a ("staging: r8188eu: Remove no more necessary definitions and code") Cc: Stable <stable@vger.kernel.org> # v5.5+ Reported-and-tested-by: Zameer Manji <zmanji@gmail.com> Reported-by: kernel test robot <lkp@intel.com> Reviewed-by: Phillip Potter <phil@philpotter.co.uk> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net> Link: https://lore.kernel.org/r/20211107173543.7486-1-Larry.Finger@lwfinger.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
In commit 221abd4d478a ("staging: r8188eu: Remove no more necessary definitions
and code"), two entries were removed from RTW_ChannelPlanMap[], but not replaced
with zeros. The position within this table is important, thus the patch broke
systems operating in regulatory domains osted later than entry 0x13 in the table.
Unfortunately, the FCC entry comes before that point and most testers did not see
this problem.

Fixes: 221abd4d478a ("staging: r8188eu: Remove no more necessary definitions and code")
Cc: Stable <stable@vger.kernel.org> # v5.5+
Reported-and-tested-by: Zameer Manji <zmanji@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Link: https://lore.kernel.org/r/20211107173543.7486-1-Larry.Finger@lwfinger.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>