- 07 Jan, 2020 40 commits
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Lubomir Rintel authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 40058398 ] gpio-pxa uses two cell to encode the interrupt source: the pin number and the trigger type. Adjust the device node accordingly. Signed-off-by:
Lubomir Rintel <lkundrak@v3.sk> Acked-by:
Pavel Machek <pavel@ucw.cz> Signed-off-by:
Olof Johansson <olof@lixom.net> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Connor Kuehl <connor.kuehl@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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Martin Schiller authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 06137619 ] o x25_find_listener(): the compare for the null_x25_address was wrong. We have to check the x25_addr of the listener socket instead of the x25_addr of the incomming call. o x25_bind(): it was not possible to bind a socket to null_x25_address Signed-off-by:
Martin Schiller <ms@dev.tdt.de> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Martin Schiller authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit d449ba3d ] The length of the called and calling address was not calculated correctly (BCD encoding). Signed-off-by:
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Aaro Koskinen authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 04a92358 ] Currently we get extra newlines on OMAP1/2 when the SoC name is printed: [ 0.000000] OMAP1510 [ 0.000000] revision 2 handled as 15xx id: bc058c9b93111a16 [ 0.000000] OMAP2420 [ 0.000000] Fix by using pr_cont. Signed-off-by:
Aaro Koskinen <aaro.koskinen@iki.fi> Signed-off-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
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Scott Mayhew authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit b493fd31 ] __cld_pipe_upcall() emits a "do not call blocking ops when !TASK_RUNNING" warning due to the dput() call in rpc_queue_upcall(). Fix it by using a completion instead of hand coding the wait. Signed-off-by:
Scott Mayhew <smayhew@redhat.com> Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Signed-off-by:
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Wen Yang authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit f31a8969 ] kmem_cache_destroy(NULL) is safe, so removes NULL check before freeing the mem. This patch also fix ifnullfree.cocci warnings. Signed-off-by:
Wen Yang <wen.yang99@zte.com.cn> Signed-off-by:
David Teigland <teigland@redhat.com> Signed-off-by:
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Lucas Stach authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit fece4978 ] Probe deferral is a normal operating condition in the probe function, so don't spam the log with an error in this case. Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Acked-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Stefan Agner authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 63fd4b94 ] The ipg clock only needs to be unprepared in case preparing per clock fails. The ipg clock has already disabled at the point. Fixes: 1cf93e0d ("serial: imx: remove the uart_console() check") Signed-off-by:
Stefan Agner <stefan@agner.ch> Reviewed-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Colin Ian King authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 9ccb6456 ] Currently the null check on key is occurring after the strcasecmp on the key, hence there is a potential null pointer dereference on key. Fix this by checking if key is null first. Also replace the == 0 check on strcasecmp with just the ! operator. Detected by CoverityScan, CID#1248787 ("Dereference before null check") Fixes: fa766c9b ("[media] Altera FPGA firmware download module") Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Niklas Söderlund authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit c9d76d06 ] The function dma_set_max_seg_size() can return either 0 on success or -EIO on error. Change its return type from unsigned int to int to capture this. Signed-off-by:
Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Alexey Dobriyan authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit f8c6d140 ] acpi_find_child_device() accepts boolean not pointer as last argument. Signed-off-by:
Alexey Dobriyan <adobriyan@gmail.com> [ rjw: Subject ] Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Vinod Koul authored
BugLink: https://bugs.launchpad.net/bugs/1858489 commit 35faaf0d upstream. Commit 627469e4 ("dmaengine: coh901318: Fix a double-lock bug") left flags variable unused, so remove it to fix the warning. drivers/dma/coh901318.c: In function 'coh901318_config': drivers/dma/coh901318.c:1805:16: warning: unused variable 'flags' [-Wunused-variable] unsigned long flags; ^~~~~ Fixes: 627469e4 ("dmaengine: coh901318: Fix a double-lock bug") Reported-By:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
Vinod Koul <vkoul@kernel.org> Signed-off-by:
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Jia-Ju Bai authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 627469e4 ] The function coh901318_alloc_chan_resources() calls spin_lock_irqsave() before calling coh901318_config(). But coh901318_config() calls spin_lock_irqsave() again in its definition, which may cause a double-lock bug. Because coh901318_config() is only called by coh901318_alloc_chan_resources(), the bug fix is to remove the calls to spin-lock and -unlock functions in coh901318_config(). Signed-off-by:
Jia-Ju Bai <baijiaju1990@gmail.com> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Marek Szyprowski authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 6035cbcc ] DWC2 hardware module integrated in Samsung SoCs requires some quirks to operate properly, so use Samsung SoC specific compatible to notify driver to apply respective fixes. Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by:
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Baruch Siach authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 73852e56 ] The abracon,tc-resistor property value is in kOhm. Signed-off-by:
Baruch Siach <baruch@tkos.co.il> Signed-off-by:
Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by:
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Christophe JAILLET authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 41ef3878 ] In case of error, we return 0. This is spurious and not consistent with the other functions of the driver. Propagate the error code instead. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Vincent Chen authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 83312f1b ] _FP_ROUND_ZERO is defined as 0 and used as a statemente in macro _FP_ROUND. This generates "error: statement with no effect [-Werror=unused-value]" from gcc. Defining _FP_ROUND_ZERO as (void)0 to fix it. This modification is quoted from glibc 'commit <In libc/:> (8ed1e7d5894000c155acbd06f)' Signed-off-by:
Vincent Chen <vincentc@andestech.com> Acked-by:
Greentime Hu <greentime@andestech.com> Signed-off-by:
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Aaro Koskinen authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 2cf1c893 ] Use correct type for fdt_property nameoff field. Signed-off-by:
Paul Burton <paul.burton@mips.com> Patchwork: https://patchwork.linux-mips.org/patch/21204/ Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@linux-mips.org Signed-off-by:
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Mark Brown authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit f1abf672 ] The stub implementation of _set_load() returns a mode value which is within the bounds of valid return codes for success (the documentation just says that failures are negative error codes) but not sensible or what the actual implementation does. Fix it to just return 0. Reported-by:
Cheng-Yi Chiang <cychiang@chromium.org> Signed-off-by:
Mark Brown <broonie@kernel.org> Reviewed-by:
Douglas Anderson <dianders@chromium.org> Signed-off-by:
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Shreeya Patel authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 688cd642 ] adt7316_i2c_read function nowhere sets the data field. It is necessary to have an appropriate value for it. Hence, assign the value stored in 'ret' variable to data field. This is an ancient bug, and as no one seems to have noticed, probably no sense in applying it to stable. Signed-off-by:
Shreeya Patel <shreeya.patel23498@gmail.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by:
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Brian Masney authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 7ed07855 ] When attempting to setup up a gpio hog, device probing will repeatedly fail with -EPROBE_DEFERED errors. It is caused by a circular dependency between the gpio and pinctrl frameworks. If the gpio-ranges property is present in device tree, then the gpio framework will handle the gpio pin registration and eliminate the circular dependency. See Christian Lamparter's commit a86caa9b ("pinctrl: msm: fix gpio-hog related boot issues") for a detailed commit message that explains the issue in much more detail. The code comment in this commit came from Christian's commit. I did not test this change against any hardware supported by this particular driver, however I was able to validate this same fix works for pinctrl-spmi-gpio.c using a LG Nexus 5 (hammerhead) phone. Signed-off-by:
Brian Masney <masneyb@onstation.org> Reviewed-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
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Steffen Maier authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 0c902936 ] This was introduced with v4.18 commit 8c3d20aa ("scsi: zfcp: fix missing REC trigger trace for all objects in ERP_FAILED") but would now suppress helpful -Wswitch compiler warnings when building with W=1 such as the following forced example: drivers/s390/scsi/zfcp_erp.c: In function 'zfcp_erp_handle_failed': drivers/s390/scsi/zfcp_erp.c:126:2: warning: enumeration value 'ZFCP_ERP_ACTION_REOPEN_PORT_FORCED' not handled in switch [-Wswitch] switch (want) { ^~~~~~ But then again, only with W=1 we would notice unhandled enum cases. Without the default cases and a missed unhandled enum case, the code might perform unforeseen things we might not want... As of today, we never run through the removed default case, so removing it is no functional change. In the future, we never should run through a default case but introduce the necessary specific case(s) to handle new functionality. Signed-off-by:
Steffen Maier <maier@linux.ibm.com> Reviewed-by:
Benjamin Block <bblock@linux.ibm.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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Maciej W. Rozycki authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 756d6d83 ] The LittleSur board is marked for high memory support and therefore clearly must provide a way to have enough memory installed for some to be present outside the low 4GiB physical address range. With the memory map of the BCM1250 SOC it has been built around it means over 1GiB of actual DRAM, as only the first 1GiB is mapped in the low 4GiB physical address range[1]. Complement commit cce335ae ("[MIPS] 64-bit Sibyte kernels need DMA32.") then and also enable ZONE_DMA32 for LittleSur. References: [1] "BCM1250/BCM1125/BCM1125H User Manual", Revision 1250_1125-UM100-R, Broadcom Corporation, 21 Oct 2002, Section 3: "System Overview", "Memory Map", pp. 34-38 Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
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David Teigland authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 8fc6ed9a ] Which would leak memory for the idr internals. Signed-off-by:
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Heiko Stuebner authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit ac8cb538 ] Similar to commit a9f0c0e5 ("clk: rockchip: fix rk3188 sclk_smc gate data") there is one other gate clock in the rk3188 clock driver with a similar wrong ordering, the sclk_mac_lbtest. So fix it as well. Signed-off-by:
Heiko Stuebner <heiko@sntech.de> Signed-off-by:
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Finley Xiao authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit a9f0c0e5 ] Fix sclk_smc gate data. Change variable order, flags come before the register address. Signed-off-by:
Finley Xiao <finley.xiao@rock-chips.com> Signed-off-by:
Johan Jonker <jbx9999@hotmail.com> Signed-off-by:
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Marek Szyprowski authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit a2dc5091 ] MAX8997 driver disables automatic path selection from MicroUSB connector and manually sets path to either UART or USB lines. However the code for setting USB path worked only for USB host mode (when ID pin is set to ground). When standard USB cable (USB device mode) is connected, path registers are not touched. This means that once the non-USB accessory is connected to MAX8997-operated micro USB port, the path is no longer set to USB and USB device mode doesn't work. This patch fixes it by setting USB path both for USB and USB host modes. Signed-off-by:
Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by:
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Vincent Whitchurch authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 344eb553 ] getuser() and putuser() (and there underscored variants) use two strb[t]/ldrb[t] instructions when they are asked to get/put 16-bits. This means that the read/write is not atomic even when performed to a 16-bit-aligned address. This leads to problems with vhost: vhost uses __getuser() to read the vring's 16-bit avail.index field, and if it happens to observe a partial update of the index, wrong descriptors will be used which will lead to a breakdown of the virtio communication. A similar problem exists for __putuser() which is used to write to the vring's used.index field. The reason these functions use strb[t]/ldrb[t] is because strht/ldrht instructions did not exist until ARMv6T2/ARMv7. So we should be easily able to fix this on ARMv7. Also, since all ARMv6 processors also don't actually use the unprivileged instructions anymore for uaccess (since CONFIG_CPU_USE_DOMAINS is not used) we can easily fix them too. Signed-off-by:
Vincent Whitchurch <vincent.whitchurch@axis.com> Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
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Andrei Otcheretianski authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit dc1aca22 ] TDLS discovery response frame is a unicast direct frame to the peer. Since we don't have a STA for this peer, this frame goes through iwl_tx_skb_non_sta(). As the result aux_sta and some completely arbitrary queue would be selected for this frame, resulting in a queue hang. Fix that by sending such frames through AP sta instead. Signed-off-by:
Andrei Otcheretianski <andrei.otcheretianski@intel.com> Signed-off-by:
Luca Coelho <luciano.coelho@intel.com> Signed-off-by:
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Douglas Anderson authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit d6e19358 ] Right now serial drivers process sysrq keys deep in their character receiving code. This means that they've already grabbed their port->lock spinlock. This can end up getting in the way if we've go to do serial stuff (especially kgdb) in response to the sysrq. Serial drivers have various hacks in them to handle this. Looking at '8250_port.c' you can see that the console_write() skips locking if we're in the sysrq handler. Looking at 'msm_serial.c' you can see that the port lock is dropped around uart_handle_sysrq_char(). It turns out that these hacks aren't exactly perfect. If you have lockdep turned on and use something like the 8250_port hack you'll get a splat that looks like: WARNING: possible circular locking dependency detected [...] is trying to acquire lock: ... (console_owner){-.-.}, at: console_unlock+0x2e0/0x5e4 but task is already holding lock: ... (&port_lock_key){-.-.}, at: serial8250_handle_irq+0x30/0xe4 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&port_lock_key){-.-.}: _raw_spin_lock_irqsave+0x58/0x70 serial8250_console_write+0xa8/0x250 univ8250_console_write+0x40/0x4c console_unlock+0x528/0x5e4 register_console+0x2c4/0x3b0 uart_add_one_port+0x350/0x478 serial8250_register_8250_port+0x350/0x3a8 dw8250_probe+0x67c/0x754 platform_drv_probe+0x58/0xa4 really_probe+0x150/0x294 driver_probe_device+0xac/0xe8 __driver_attach+0x98/0xd0 bus_for_each_dev+0x84/0xc8 driver_attach+0x2c/0x34 bus_add_driver+0xf0/0x1ec driver_register+0xb4/0x100 __platform_driver_register+0x60/0x6c dw8250_platform_driver_init+0x20/0x28 ... -> #0 (console_owner){-.-.}: lock_acquire+0x1e8/0x214 console_unlock+0x35c/0x5e4 vprintk_emit+0x230/0x274 vprintk_default+0x7c/0x84 vprintk_func+0x190/0x1bc printk+0x80/0xa0 __handle_sysrq+0x104/0x21c handle_sysrq+0x30/0x3c serial8250_read_char+0x15c/0x18c serial8250_rx_chars+0x34/0x74 serial8250_handle_irq+0x9c/0xe4 dw8250_handle_irq+0x98/0xcc serial8250_interrupt+0x50/0xe8 ... other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&port_lock_key); lock(console_owner); lock(&port_lock_key); lock(console_owner); *** DEADLOCK *** The hack used in 'msm_serial.c' doesn't cause the above splats but it seems a bit ugly to unlock / lock our spinlock deep in our irq handler. It seems like we could defer processing the sysrq until the end of the interrupt handler right after we've unlocked the port. With this scheme if a whole batch of sysrq characters comes in one irq then we won't handle them all, but that seems like it should be a fine compromise. Signed-off-by:
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Chuhong Yuan authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 3df70afe ] The driver calls release_resource in remove to match request_mem_region in probe, which is incorrect. Fix it by using the right one, release_mem_region. Signed-off-by:
Chuhong Yuan <hslester96@gmail.com> Signed-off-by:
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Chuhong Yuan authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit dcb77e4b ] The driver misses calling destroy_workqueue in remove like what is done when probe fails. Add the missed calls to fix it. Signed-off-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
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paulhsia authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit f5cdc9d4 ] If the nullity check for `substream->runtime` is outside of the lock region, it is possible to have a null runtime in the critical section if snd_pcm_detach_substream is called right before the lock. Signed-off-by:
paulhsia <paulhsia@chromium.org> Link: https://lore.kernel.org/r/20191112171715.128727-2-paulhsia@chromium.orgSigned-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Pan Bian authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 79aae6ac ] The device md->input is used after it is released. Setting the device data to NULL is unnecessary as the device is never used again. Instead, md->input should be assigned NULL to avoid accessing the freed memory accidently. Besides, checking md->si against NULL is superfluous as it points to a variable address, which cannot be NULL. Signed-off-by:
Pan Bian <bianpan2016@163.com> Link: https://lore.kernel.org/r/1572936379-6423-1-git-send-email-bianpan2016@163.comSigned-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Stephan Gerhold authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit a71a29f5 ] I2C communication errors (-EREMOTEIO) during the IRQ handler of nxp-nci result in a NULL pointer dereference at the moment: BUG: kernel NULL pointer dereference, address: 0000000000000000 Oops: 0002 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 355 Comm: irq/137-nxp-nci Not tainted 5.4.0-rc6 #1 RIP: 0010:skb_queue_tail+0x25/0x50 Call Trace: nci_recv_frame+0x36/0x90 [nci] nxp_nci_i2c_irq_thread_fn+0xd1/0x285 [nxp_nci_i2c] ? preempt_count_add+0x68/0xa0 ? irq_forced_thread_fn+0x80/0x80 irq_thread_fn+0x20/0x60 irq_thread+0xee/0x180 ? wake_threads_waitq+0x30/0x30 kthread+0xfb/0x130 ? irq_thread_check_affinity+0xd0/0xd0 ? kthread_park+0x90/0x90 ret_from_fork+0x1f/0x40 Afterward the kernel must be rebooted to work properly again. This happens because it attempts to call nci_recv_frame() with skb == NULL. However, unlike nxp_nci_fw_recv_frame(), nci_recv_frame() does not have any NULL checks for skb, causing the NULL pointer dereference. Change the code to call only nxp_nci_fw_recv_frame() in case of an error. Make sure to log it so it is obvious that a communication error occurred. The error above then becomes: nxp-nci_i2c i2c-NXP1001:00: NFC: Read failed with error -121 nci: __nci_request: wait_for_completion_interruptible_timeout failed 0 nxp-nci_i2c i2c-NXP1001:00: NFC: Read failed with error -121 Fixes: 6be88670 ("NFC: nxp-nci_i2c: Add I2C support to NXP NCI driver") Signed-off-by:
Stephan Gerhold <stephan@gerhold.net> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Al Viro authored
BugLink: https://bugs.launchpad.net/bugs/1858489 [ Upstream commit 03ad0d70 ] if the second call of should_expire() in there ends up grabbing and returning a new reference to dentry, we need to drop it before continuing. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Chuhong Yuan authored
BugLink: https://bugs.launchpad.net/bugs/1858489 commit 50b2b571 upstream. The driver forgets to call pm_runtime_disable in remove. Add the missed calls to fix it. Signed-off-by:
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Jiangfeng Xiao authored
BugLink: https://bugs.launchpad.net/bugs/1858489 commit 7d73170e upstream. Doing fuzz test on sbsa uart device, causes a kernel crash due to NULL pointer dereference: ------------[ cut here ]------------ Unable to handle kernel paging request at virtual address fffffffffffffffc pgd = ffffffe331723000 [fffffffffffffffc] *pgd=0000002333595003, *pud=0000002333595003, *pmd=00000 Internal error: Oops: 96000005 [#1] PREEMPT SMP Modules linked in: ping(O) jffs2 rtos_snapshot(O) pramdisk(O) hisi_sfc(O) Drv_Nandc_K(O) Drv_SysCtl_K(O) Drv_SysClk_K(O) bsp_reg(O) hns3(O) hns3_uio_enet(O) hclgevf(O) hclge(O) hnae3(O) mdio_factory(O) mdio_registry(O) mdio_dev(O) mdio(O) hns3_info(O) rtos_kbox_panic(O) uart_suspend(O) rsm(O) stp llc tunnel4 xt_tcpudp ipt_REJECT nf_reject_ipv4 iptable_filter ip_tables x_tables sd_mod xhci_plat_hcd xhci_pci xhci_hcd usbmon usbhid usb_storage ohci_platform ohci_pci ohci_hcd hid_generic hid ehci_platform ehci_pci ehci_hcd vfat fat usbcore usb_common scsi_mod yaffs2multi(O) ext4 jbd2 ext2 mbcache ofpart i2c_dev i2c_core uio ubi nand nand_ecc nand_ids cfi_cmdset_0002 cfi_cmdset_0001 cfi_probe gen_probe cmdlinepart chipreg mtdblock mtd_blkdevs mtd nfsd auth_rpcgss oid_registry nfsv3 nfs nfs_acl lockd sunrpc grace autofs4 CPU: 2 PID: 2385 Comm: tty_fuzz_test Tainted: G O 4.4.193 #1 task: ffffffe32b23f110 task.stack: ffffffe32bda4000 PC is at uart_break_ctl+0x44/0x84 LR is at uart_break_ctl+0x34/0x84 pc : [<ffffff8393196098>] lr : [<ffffff8393196088>] pstate: 80000005 sp : ffffffe32bda7cc0 x29: ffffffe32bda7cc0 x28: ffffffe32b23f110 x27: ffffff8393402000 x26: 0000000000000000 x25: ffffffe32b233f40 x24: ffffffc07a8ec680 x23: 0000000000005425 x22: 00000000ffffffff x21: ffffffe33ed73c98 x20: 0000000000000000 x19: ffffffe33ed94168 x18: 0000000000000004 x17: 0000007f92ae9d30 x16: ffffff8392fa6064 x15: 0000000000000010 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000020 x10: 0000007ffdac1708 x9 : 0000000000000078 x8 : 000000000000001d x7 : 0000000052a64887 x6 : ffffffe32bda7e08 x5 : ffffffe32b23c000 x4 : 0000005fbc5b0000 x3 : ffffff83938d5018 x2 : 0000000000000080 x1 : ffffffe32b23c040 x0 : ffffff83934428f8 virtual start addr offset is 38ac00000 module base offset is 2cd4cf1000 linear region base offset is : 0 Process tty_fuzz_test (pid: 2385, stack limit = 0xffffffe32bda4000) Stack: (0xffffffe32bda7cc0 to 0xffffffe32bda8000) 7cc0: ffffffe32bda7cf0 ffffff8393177718 ffffffc07a8ec680 ffffff8393196054 7ce0: 000000001739f2e0 0000007ffdac1978 ffffffe32bda7d20 ffffff8393179a1c 7d00: 0000000000000000 ffffff8393c0a000 ffffffc07a8ec680 cb88537fdc8ba600 7d20: ffffffe32bda7df0 ffffff8392fa5a40 ffffff8393c0a000 0000000000005425 7d40: 0000007ffdac1978 ffffffe32b233f40 ffffff8393178dcc 0000000000000003 7d60: 000000000000011d 000000000000001d ffffffe32b23f110 000000000000029e 7d80: ffffffe34fe8d5d0 0000000000000000 ffffffe32bda7e14 cb88537fdc8ba600 7da0: ffffffe32bda7e30 ffffff8393042cfc ffffff8393c41720 ffffff8393c46410 7dc0: ffffff839304fa68 ffffffe32b233f40 0000000000005425 0000007ffdac1978 7de0: 000000000000011d cb88537fdc8ba600 ffffffe32bda7e70 ffffff8392fa60cc 7e00: 0000000000000000 ffffffe32b233f40 ffffffe32b233f40 0000000000000003 7e20: 0000000000005425 0000007ffdac1978 ffffffe32bda7e70 ffffff8392fa60b0 7e40: 0000000000000280 ffffffe32b233f40 ffffffe32b233f40 0000000000000003 7e60: 0000000000005425 cb88537fdc8ba600 0000000000000000 ffffff8392e02e78 7e80: 0000000000000280 0000005fbc5b0000 ffffffffffffffff 0000007f92ae9d3c 7ea0: 0000000060000000 0000000000000015 0000000000000003 0000000000005425 7ec0: 0000007ffdac1978 0000000000000000 00000000a54c910e 0000007f92b95014 7ee0: 0000007f92b95090 0000000052a64887 000000000000001d 0000000000000078 7f00: 0000007ffdac1708 0000000000000020 0000000000000000 0000000000000000 7f20: 0000000000000000 0000000000000010 000000556acf0090 0000007f92ae9d30 7f40: 0000000000000004 000000556acdef10 0000000000000000 000000556acdebd0 7f60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 7f80: 0000000000000000 0000000000000000 0000000000000000 0000007ffdac1840 7fa0: 000000556acdedcc 0000007ffdac1840 0000007f92ae9d3c 0000000060000000 7fc0: 0000000000000000 0000000000000000 0000000000000003 000000000000001d 7fe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 Call trace: Exception stack(0xffffffe32bda7ab0 to 0xffffffe32bda7bf0) 7aa0: 0000000000001000 0000007fffffffff 7ac0: ffffffe32bda7cc0 ffffff8393196098 0000000080000005 0000000000000025 7ae0: ffffffe32b233f40 ffffff83930d777c ffffffe32bda7b30 ffffff83930d777c 7b00: ffffffe32bda7be0 ffffff83938d5000 ffffffe32bda7be0 ffffffe32bda7c20 7b20: ffffffe32bda7b60 ffffff83930d777c ffffffe32bda7c10 ffffff83938d5000 7b40: ffffffe32bda7c10 ffffffe32bda7c50 ffffff8393c0a000 ffffffe32b23f110 7b60: ffffffe32bda7b70 ffffff8392e09df4 ffffffe32bda7bb0 cb88537fdc8ba600 7b80: ffffff83934428f8 ffffffe32b23c040 0000000000000080 ffffff83938d5018 7ba0: 0000005fbc5b0000 ffffffe32b23c000 ffffffe32bda7e08 0000000052a64887 7bc0: 000000000000001d 0000000000000078 0000007ffdac1708 0000000000000020 7be0: 0000000000000000 0000000000000000 [<ffffff8393196098>] uart_break_ctl+0x44/0x84 [<ffffff8393177718>] send_break+0xa0/0x114 [<ffffff8393179a1c>] tty_ioctl+0xc50/0xe84 [<ffffff8392fa5a40>] do_vfs_ioctl+0xc4/0x6e8 [<ffffff8392fa60cc>] SyS_ioctl+0x68/0x9c [<ffffff8392e02e78>] __sys_trace_return+0x0/0x4 Code: b9410ea0 34000160 f9408aa0 f9402814 (b85fc280) ---[ end trace 8606094f1960c5e0 ]--- Kernel panic - not syncing: Fatal exception Fix this problem by adding NULL checks prior to calling break_ctl ops. Signed-off-by:
Jiangfeng Xiao <xiaojiangfeng@huawei.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/1574263133-28259-1-git-send-email-xiaojiangfeng@huawei.comSigned-off-by:
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Kai-Heng Feng authored
BugLink: https://bugs.launchpad.net/bugs/1858489 commit 7e8ce0e2 upstream. The AMD FCH USB XHCI Controller advertises support for generating PME# while in D0. When in D0, it does signal PME# for USB 3.0 connect events, but not for USB 2.0 or USB 1.1 connect events, which means the controller doesn't wake correctly for those events. 00:10.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller [1022:7914] (rev 20) (prog-if 30 [XHCI]) Subsystem: Dell FCH USB XHCI Controller [1028:087e] Capabilities: [50] Power Management version 3 Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+) Clear PCI_PM_CAP_PME_D0 in dev->pme_support to indicate the device will not assert PME# from D0 so we don't rely on it. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=203673 Link: https://lore.kernel.org/r/20190902145252.32111-1-kai.heng.feng@canonical.comSigned-off-by:
Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Cc: stable@vger.kernel.org Signed-off-by:
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Jeffrey Hugo authored
BugLink: https://bugs.launchpad.net/bugs/1858489 commit b027ce25 upstream. hci_qca interfaces to the wcn3990 via a uart_dm on the msm8998 mtp and Lenovo Miix 630 laptop. As part of initializing the wcn3990, hci_qca disables flow, configures the uart baudrate, and then reenables flow - at which point an event is expected to be received over the uart from the wcn3990. It is observed that this event comes after the baudrate change but before hci_qca re-enables flow. This is unexpected, and is a result of msm_reset() being broken. According to the uart_dm hardware documentation, it is recommended that automatic hardware flow control be enabled by setting RX_RDY_CTL. Auto hw flow control will manage RFR based on the configured watermark. When there is space to receive data, the hw will assert RFR. When the watermark is hit, the hw will de-assert RFR. The hardware documentation indicates that RFR can me manually managed via CR when RX_RDY_CTL is not set. SET_RFR asserts RFR, and RESET_RFR de-asserts RFR. msm_reset() is broken because after resetting the hardware, it unconditionally asserts RFR via SET_RFR. This enables flow regardless of the current configuration, and would undo a previous flow disable operation. It should instead de-assert RFR via RESET_RFR to block flow until the hardware is reconfigured. msm_serial should rely on the client to specify that flow should be enabled, either via mctrl() or the termios structure, and only assert RFR in response to those triggers. Fixes: 04896a77 ("msm_serial: serial driver for MSM7K onboard serial peripheral.") Signed-off-by:
Jeffrey Hugo <jeffrey.l.hugo@gmail.com> Reviewed-by:
Andy Gross <agross@kernel.org> Link: https://lore.kernel.org/r/20191021154616.25457-1-jeffrey.l.hugo@gmail.comSigned-off-by:
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