- 14 Jul, 2020 40 commits
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Stafford Horne authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 6bd140e1 ] Working on the OpenRISC glibc port I found that sometimes clone was working strange. That the tls data argument sent in r7 was always wrong. Further investigation revealed that the arguments were getting clobbered in the entry code. This patch removes the code that writes to the argument registers. This was likely due to some old code hanging around. This patch fixes this up for clone and fork. This fork clobber is harmless but also useless so remove. Signed-off-by:
Stafford Horne <shorne@gmail.com> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
Kamal Mostafa <kamal@canonical.com> Signed-off-by:
Kelsey Skunberg <kelsey.skunberg@canonical.com>
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Xiyu Yang authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 36124fb1 ] fsl_asrc_dma_hw_params() invokes dma_request_channel() or fsl_asrc_get_dma_channel(), which returns a reference of the specified dma_chan object to "pair->dma_chan[dir]" with increased refcnt. The reference counting issue happens in one exception handling path of fsl_asrc_dma_hw_params(). When config DMA channel failed for Back-End, the function forgets to decrease the refcnt increased by dma_request_channel() or fsl_asrc_get_dma_channel(), causing a refcnt leak. Fix this issue by calling dma_release_channel() when config DMA channel failed. Signed-off-by:
Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by:
Xin Tan <tanxin.ctf@gmail.com> Link: https://lore.kernel.org/r/1590415966-52416-1-git-send-email-xiyuyang19@fudan.edu.cnSigned-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Fedor Tokarev authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 118917d6 ] Fix off-by-one issues in 'rpc_ntop6': - 'snprintf' returns the number of characters which would have been written if enough space had been available, excluding the terminating null byte. Thus, a return value of 'sizeof(scopebuf)' means that the last character was dropped. - 'strcat' adds a terminating null byte to the string, thus if len == buflen, the null byte is written past the end of the buffer. Signed-off-by:
Fedor Tokarev <ftokarev@gmail.com> Signed-off-by:
Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by:
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Qiushi Wu authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 44734a59 ] m66592_free_request() is called under label "err_add_udc" and "clean_up", and m66592->ep0_req is not set to NULL after first free, leading to a double-free. Fix this issue by setting m66592->ep0_req to NULL after the first free. Fixes: 0f91349b ("usb: gadget: convert all users to the new udc infrastructure") Signed-off-by:
Qiushi Wu <wu000273@umn.edu> Signed-off-by:
Felipe Balbi <balbi@kernel.org> Signed-off-by:
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Colin Ian King authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit eafa8004 ] Currently pointer ep is being dereferenced before it is null checked leading to a null pointer dereference issue. Fix this by only assigning pointer udc once ep is known to be not null. Also remove a debug message that requires a valid udc which may not be possible at that point. Addresses-Coverity: ("Dereference before null check") Fixes: 24a28e42 ("USB: gadget driver for LPC32xx") Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Nathan Chancellor authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 7a0fbcf7 ] Clang warns: drivers/usb/gadget/udc/s3c2410_udc.c:255:11: warning: comparison of address of 'ep->queue' equal to a null pointer is always false [-Wtautological-pointer-compare] if (&ep->queue == NULL) ~~~~^~~~~ ~~~~ 1 warning generated. It is not wrong, queue is not a pointer so if ep is not NULL, the address of queue cannot be NULL. No other driver does a check like this and this check has been around since the driver was first introduced, presumably with no issues so it does not seem like this check should be something else. Just remove it. Commit afe956c5 ("kbuild: Enable -Wtautological-compare") exposed this but it is not the root cause of the warning. Fixes: 3fc154b6 ("USB Gadget driver for Samsung s3c2410 ARM SoC") Link: https://github.com/ClangBuiltLinux/linux/issues/1004Reviewed-by:
Nick Desaulniers <ndesaulniers@google.com> Reported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
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Fabrice Gasnier authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 8c935dea ] When the remote wakeup interrupt is triggered, lx_state is resumed from L2 to L0 state. But when the gadget resume is called, lx_state is still L2. This prevents the resume callback to queue any request. Any attempt to queue a request from resume callback will result in: - "submit request only in active state" debug message to be issued - dwc2_hsotg_ep_queue() returns -EAGAIN Call the gadget resume routine after the core is in L0 state. Fixes: f81f46e1 ("usb: dwc2: implement hibernation during bus suspend/resume") Acked-by:
Minas Harutyunyan <hminas@synopsys.com> Signed-off-by:
Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by:
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Stefan Riedmueller authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit a0948ddb ] There is actually no need to ping the watchdog before disabling it during timeout change. Disabling the watchdog already takes care of resetting the counter. This fixes an issue during boot when the userspace watchdog handler takes over and the watchdog is already running. Opening the watchdog in this case leads to the first ping and directly after that without the required heartbeat delay a second ping issued by the set_timeout call. Due to the missing delay this resulted in a reset. Signed-off-by:
Stefan Riedmueller <s.riedmueller@phytec.de> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Reviewed-by:
Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Link: https://lore.kernel.org/r/20200403130728.39260-3-s.riedmueller@phytec.deSigned-off-by:
Wim Van Sebroeck <wim@linux-watchdog.org> Signed-off-by:
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Marek Szyprowski authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 25bdae0f ] Mark the SCLK clock for Exynos5433 I2S1 device with IGNORE_UNUSED flag to match its behaviour with SCLK clock for AUD_I2S (I2S0) device until a proper fix for Exynos I2S driver is ready. This fixes the following synchronous abort issue revealed by the probe order change caused by the commit 93d2e432 ("of: platform: Batch fwnode parsing when adding all top level devices") Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 50 Comm: kworker/0:1 Not tainted 5.7.0-rc5+ #701 Hardware name: Samsung TM2E board (DT) Workqueue: events deferred_probe_work_func pstate: 60000005 (nZCv daif -PAN -UAO) pc : samsung_i2s_probe+0x768/0x8f0 lr : samsung_i2s_probe+0x688/0x8f0 ... Call trace: samsung_i2s_probe+0x768/0x8f0 platform_drv_probe+0x50/0xa8 really_probe+0x108/0x370 driver_probe_device+0x54/0xb8 __device_attach_driver+0x90/0xc0 bus_for_each_drv+0x70/0xc8 __device_attach+0xdc/0x140 device_initial_probe+0x10/0x18 bus_probe_device+0x94/0xa0 deferred_probe_work_func+0x70/0xa8 process_one_work+0x2a8/0x718 worker_thread+0x48/0x470 kthread+0x134/0x160 ret_from_fork+0x10/0x1c Code: 17ffffaf d503201f f94086c0 91003000 (88dffc00) ---[ end trace ccf721c9400ddbd6 ]--- Signed-off-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
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Gregory CLEMENT authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 4dd31f1f ] When submitting the previous fix "tty: n_gsm: Fix waking up upper tty layer when room available". It was suggested to switch from a while to a for loop, but when doing it, there was a remaining bogus i++. This patch removes this i++ and also reorganizes the code making it more compact. Fixes: e1eaea46 ("tty: n_gsm line discipline") Signed-off-by:
Gregory CLEMENT <gregory.clement@bootlin.com> Link: https://lore.kernel.org/r/20200518084517.2173242-3-gregory.clement@bootlin.comSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Tang Bin authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit d4929202 ] The function ehci_mxc_drv_probe() does not perform sufficient error checking after executing platform_get_irq(), thus fix it. Fixes: 7e8d5cd9 ("USB: Add EHCI support for MX27 and MX31 based boards") Signed-off-by:
Zhang Shengju <zhangshengju@cmss.chinamobile.com> Signed-off-by:
Tang Bin <tangbin@cmss.chinamobile.com> Reviewed-by:
Peter Chen <peter.chen@nxp.com> Link: https://lore.kernel.org/r/20200513132647.5456-1-tangbin@cmss.chinamobile.comSigned-off-by:
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Qais Yousef authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 1cb3b009 ] The following warning was observed when attempting to suspend to disk using a USB flash as a swap device. [ 111.779649] ------------[ cut here ]------------ [ 111.788382] URB (____ptrval____) submitted while active [ 111.796646] WARNING: CPU: 3 PID: 365 at drivers/usb/core/urb.c:363 usb_submit_urb+0x3d8/0x590 [ 111.805417] Modules linked in: [ 111.808584] CPU: 3 PID: 365 Comm: kworker/3:2 Not tainted 5.6.0-rc6-00002-gdfd1731f9a3e-dirty #545 [ 111.817796] Hardware name: ARM Juno development board (r2) (DT) [ 111.823896] Workqueue: usb_hub_wq hub_event [ 111.828217] pstate: 60000005 (nZCv daif -PAN -UAO) [ 111.833156] pc : usb_submit_urb+0x3d8/0x590 [ 111.837471] lr : usb_submit_urb+0x3d8/0x590 [ 111.841783] sp : ffff800018de38b0 [ 111.845205] x29: ffff800018de38b0 x28: 0000000000000003 [ 111.850682] x27: ffff000970530b20 x26: ffff8000133fd000 [ 111.856159] x25: ffff8000133fd000 x24: ffff800018de3b38 [ 111.861635] x23: 0000000000000004 x22: 0000000000000c00 [ 111.867112] x21: 0000000000000000 x20: 00000000fffffff0 [ 111.872589] x19: ffff0009704e7a00 x18: ffffffffffffffff [ 111.878065] x17: 00000000a7c8f4bc x16: 000000002af33de8 [ 111.883542] x15: ffff8000133fda88 x14: 0720072007200720 [ 111.889019] x13: 0720072007200720 x12: 0720072007200720 [ 111.894496] x11: 0000000000000000 x10: 00000000a5286134 [ 111.899973] x9 : 0000000000000002 x8 : ffff000970c837a0 [ 111.905449] x7 : 0000000000000000 x6 : ffff800018de3570 [ 111.910926] x5 : 0000000000000001 x4 : 0000000000000003 [ 111.916401] x3 : 0000000000000000 x2 : ffff800013427118 [ 111.921879] x1 : 9d4e965b4b7d7c00 x0 : 0000000000000000 [ 111.927356] Call trace: [ 111.929892] usb_submit_urb+0x3d8/0x590 [ 111.933852] hub_activate+0x108/0x7f0 [ 111.937633] hub_resume+0xac/0x148 [ 111.941149] usb_resume_interface.isra.10+0x60/0x138 [ 111.946265] usb_resume_both+0xe4/0x140 [ 111.950225] usb_runtime_resume+0x24/0x30 [ 111.954365] __rpm_callback+0xdc/0x138 [ 111.958236] rpm_callback+0x34/0x98 [ 111.961841] rpm_resume+0x4a8/0x720 [ 111.965445] rpm_resume+0x50c/0x720 [ 111.969049] __pm_runtime_resume+0x4c/0xb8 [ 111.973276] usb_autopm_get_interface+0x28/0x60 [ 111.977948] hub_event+0x80/0x16d8 [ 111.981466] process_one_work+0x2a4/0x748 [ 111.985604] worker_thread+0x48/0x498 [ 111.989387] kthread+0x13c/0x140 [ 111.992725] ret_from_fork+0x10/0x18 [ 111.996415] irq event stamp: 354 [ 111.999756] hardirqs last enabled at (353): [<ffff80001019ea1c>] console_unlock+0x504/0x5b8 [ 112.008441] hardirqs last disabled at (354): [<ffff8000100a95d0>] do_debug_exception+0x1a8/0x258 [ 112.017479] softirqs last enabled at (350): [<ffff8000100818a4>] __do_softirq+0x4bc/0x568 [ 112.025984] softirqs last disabled at (343): [<ffff8000101145a4>] irq_exit+0x144/0x150 [ 112.034129] ---[ end trace dc96030b9cf6c8a3 ]--- The problem was tracked down to a missing call to pm_runtime_set_active() on resume in ohci-platform. Link: https://lore.kernel.org/lkml/20200323143857.db5zphxhq4hz3hmd@e107158-lin.cambridge.arm.com/Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Qais Yousef <qais.yousef@arm.com> CC: Tony Prisk <linux@prisktech.co.nz> CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org> CC: Mathias Nyman <mathias.nyman@intel.com> CC: Oliver Neukum <oneukum@suse.de> CC: linux-arm-kernel@lists.infradead.org CC: linux-usb@vger.kernel.org CC: linux-kernel@vger.kernel.org Link: https://lore.kernel.org/r/20200518154931.6144-1-qais.yousef@arm.comSigned-off-by:
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Alex Williamson authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit bc138db1 ] The PCI Code and ID Assignment Specification changed capability ID 0 from reserved to a NULL capability in the v1.1 revision. The NULL capability is defined to include only the 16-bit capability header, ie. only the ID and next pointer. Unfortunately vfio-pci creates a map of config space, where ID 0 is used to reserve the standard type 0 header. Finding an actual capability with this ID therefore results in a bogus range marked in that map and conflicts with subsequent capabilities. As this seems to be a dummy capability anyway and we already support dropping capabilities, let's hide this one rather than delving into the potentially subtle dependencies within our map. Seen on an NVIDIA Tesla T4. Reviewed-by:
Cornelia Huck <cohuck@redhat.com> Signed-off-by:
Alex Williamson <alex.williamson@redhat.com> Signed-off-by:
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Geoff Levand authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 12655446 ] The ps3_mm_region_destroy() and ps3_mm_vas_destroy() routines are called very late in the shutdown via kexec's mmu_cleanup_all routine. By the time mmu_cleanup_all runs it is too late to use udbg_printf, and calling it will cause PS3 systems to hang. Remove all debugging statements from ps3_mm_region_destroy() and ps3_mm_vas_destroy() and replace any error reporting with calls to lv1_panic. With this change builds with 'DEBUG' defined will not cause kexec reboots to hang, and builds with 'DEBUG' defined or not will end in lv1_panic if an error is encountered. Signed-off-by:
Geoff Levand <geoff@infradead.org> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/7325c4af2b4c989c19d6a26b90b1fec9c0615ddf.1589049250.git.geoff@infradead.orgSigned-off-by:
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Nicholas Piggin authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit deb70f7a ] This was discovered developing qemu fwnmi sreset support. This off-by-one bug means the last 16 bytes of the rtas area can not be used for a 16 byte save area. It's not a serious bug, and QEMU implementation has to retain a workaround for old kernels, but it's good to tighten it. Signed-off-by:
Nicholas Piggin <npiggin@gmail.com> Signed-off-by:
Mahesh Salgaonkar <mahesh@linux.ibm.com> Link: https://lore.kernel.org/r/20200508043408.886394-7-npiggin@gmail.comSigned-off-by:
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Gregory CLEMENT authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 01dbb362 ] Warn the upper layer when n_gms is ready to receive data again. Without this the associated virtual tty remains blocked indefinitely. Fixes: e1eaea46 ("tty: n_gsm line discipline") Signed-off-by:
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Gregory CLEMENT authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 84d6f81c ] For at least some modems like the TELIT LE910, skipping SOF makes transfers blocking indefinitely after a short amount of data transferred. Given the small improvement provided by skipping the SOF (just one byte on about 100 bytes), it seems better to completely remove this "feature" than make it optional. Fixes: e1eaea46 ("tty: n_gsm line discipline") Signed-off-by:
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Tero Kristo authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit c7c1cbbc ] The parent_names is never released for a component clock definition, causing some memory leak. Fix by releasing it once it is no longer needed. Reported-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by:
Tero Kristo <t-kristo@ti.com> Link: https://lkml.kernel.org/r/20200429131341.4697-2-t-kristo@ti.comAcked-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Stephen Boyd <sboyd@kernel.org> Signed-off-by:
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Arnd Bergmann authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit fe204591 ] Building a kernel with clang sometimes fails with an objtool error in dlm: fs/dlm/lock.o: warning: objtool: revert_lock_pc()+0xbd: can't find jump dest instruction at .text+0xd7fc The problem is that BUG() never returns and the compiler knows that anything after it is unreachable, however the panic still emits some code that does not get fully eliminated. Having both BUG() and panic() is really pointless as the BUG() kills the current process and the subsequent panic() never hits. In most cases, we probably don't really want either and should replace the DLM_ASSERT() statements with WARN_ON(), as has been done for some of them. Remove the BUG() here so the user at least sees the panic message and we can reliably build randconfig kernels. Fixes: e7fd4179 ("[DLM] The core of the DLM for GFS2/CLVM") Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: clang-built-linux@googlegroups.com Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
David Teigland <teigland@redhat.com> Signed-off-by:
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Suganath Prabu S authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit cbbfdb2a ] Fix following warning from Smatch static analyser: drivers/scsi/mpt3sas/mpt3sas_base.c:5256 _base_allocate_memory_pools() warn: 'ioc->hpr_lookup' double freed drivers/scsi/mpt3sas/mpt3sas_base.c:5256 _base_allocate_memory_pools() warn: 'ioc->internal_lookup' double freed Link: https://lore.kernel.org/r/20200508110738.30732-1-suganath-prabu.subramani@broadcom.comReported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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Dmitry Osipenko authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit c32ea07a ] Fix failure when USB cable is connected: smb347 2-006a: reading IRQSTAT_D failed Fixes: 1502cfe1 ("smb347-charger: Fix battery status reporting logic for charger faults") Tested-by:
David Heidelberg <david@ixit.cz> Signed-off-by:
Dmitry Osipenko <digetx@gmail.com> Signed-off-by:
Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by:
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Kai-Heng Feng authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 66ff14e5 ] 7d715a6c ("PCI: add PCI Express ASPM support") added the ability for Linux to enable ASPM, but for some undocumented reason, it didn't enable ASPM on links where the downstream component is a PCIe-to-PCI/PCI-X Bridge. Remove this exclusion so we can enable ASPM on these links. The Dell OptiPlex 7080 mentioned in the bugzilla has a TI XIO2001 PCIe-to-PCI Bridge. Enabling ASPM on the link leading to it allows the Intel SoC to enter deeper Package C-states, which is a significant power savings. [bhelgaas: commit log] Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=207571 Link: https://lore.kernel.org/r/20200505173423.26968-1-kai.heng.feng@canonical.comSigned-off-by:
Kai-Heng Feng <kai.heng.feng@canonical.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Reviewed-by:
Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by:
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Kuppuswamy Sathyanarayanan authored
drivers: base: Fix NULL pointer exception in __platform_driver_probe() if a driver developer is foolish BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 388bcc6e ] If platform bus driver registration is failed then, accessing platform bus spin lock (&drv->driver.bus->p->klist_drivers.k_lock) in __platform_driver_probe() without verifying the return value __platform_driver_register() can lead to NULL pointer exception. So check the return value before attempting the spin lock. One such example is below: For a custom usecase, I have intentionally failed the platform bus registration and I expected all the platform device/driver registrations to fail gracefully. But I came across this panic issue. [ 1.331067] BUG: kernel NULL pointer dereference, address: 00000000000000c8 [ 1.331118] #PF: supervisor write access in kernel mode [ 1.331163] #PF: error_code(0x0002) - not-present page [ 1.331208] PGD 0 P4D 0 [ 1.331233] Oops: 0002 [#1] PREEMPT SMP [ 1.331268] CPU: 3 PID: 1 Comm: swapper/0 Tainted: G W 5.6.0-00049-g670d35fb0144 #165 [ 1.331341] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 [ 1.331406] RIP: 0010:_raw_spin_lock+0x15/0x30 [ 1.331588] RSP: 0000:ffffc9000001be70 EFLAGS: 00010246 [ 1.331632] RAX: 0000000000000000 RBX: 00000000000000c8 RCX: 0000000000000001 [ 1.331696] RDX: 0000000000000001 RSI: 0000000000000092 RDI: 0000000000000000 [ 1.331754] RBP: 00000000ffffffed R08: 0000000000000501 R09: 0000000000000001 [ 1.331817] R10: ffff88817abcc520 R11: 0000000000000670 R12: 00000000ffffffed [ 1.331881] R13: ffffffff82dbc268 R14: ffffffff832f070a R15: 0000000000000000 [ 1.331945] FS: 0000000000000000(0000) GS:ffff88817bd80000(0000) knlGS:0000000000000000 [ 1.332008] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.332062] CR2: 00000000000000c8 CR3: 000000000681e001 CR4: 00000000003606e0 [ 1.332126] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1.332189] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1.332252] Call Trace: [ 1.332281] __platform_driver_probe+0x92/0xee [ 1.332323] ? rtc_dev_init+0x2b/0x2b [ 1.332358] cmos_init+0x37/0x67 [ 1.332396] do_one_initcall+0x7d/0x168 [ 1.332428] kernel_init_freeable+0x16c/0x1c9 [ 1.332473] ? rest_init+0xc0/0xc0 [ 1.332508] kernel_init+0x5/0x100 [ 1.332543] ret_from_fork+0x1f/0x30 [ 1.332579] CR2: 00000000000000c8 [ 1.332616] ---[ end trace 3bd87f12e9010b87 ]--- [ 1.333549] note: swapper/0[1] exited with preempt_count 1 [ 1.333592] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 [ 1.333736] Kernel Offset: disabled Note, this can only be triggered if a driver errors out from this call, which should never happen. If it does, the driver needs to be fixed. Signed-off-by:
Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Link: https://lore.kernel.org/r/20200408214003.3356-1-sathyanarayanan.kuppuswamy@linux.intel.comSigned-off-by:
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John Stultz authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 8508f4cb ] Valentine reported seeing: [ 3.626638] INFO: trying to register non-static key. [ 3.626639] the code is fine but needs lockdep annotation. [ 3.626640] turning off the locking correctness validator. [ 3.626644] CPU: 7 PID: 51 Comm: kworker/7:1 Not tainted 5.7.0-rc2-00115-g8c2e9790f196 #116 [ 3.626646] Hardware name: HiKey960 (DT) [ 3.626656] Workqueue: events deferred_probe_work_func [ 3.632476] sd 0:0:0:0: [sda] Optimal transfer size 8192 bytes not a multiple of physical block size (16384 bytes) [ 3.640220] Call trace: [ 3.640225] dump_backtrace+0x0/0x1b8 [ 3.640227] show_stack+0x20/0x30 [ 3.640230] dump_stack+0xec/0x158 [ 3.640234] register_lock_class+0x598/0x5c0 [ 3.640235] __lock_acquire+0x80/0x16c0 [ 3.640236] lock_acquire+0xf4/0x4a0 [ 3.640241] _raw_spin_lock_irqsave+0x70/0xa8 [ 3.640245] uart_add_one_port+0x388/0x4b8 [ 3.640248] pl011_register_port+0x70/0xf0 [ 3.640250] pl011_probe+0x184/0x1b8 [ 3.640254] amba_probe+0xdc/0x180 [ 3.640256] really_probe+0xe0/0x338 [ 3.640257] driver_probe_device+0x60/0xf8 [ 3.640259] __device_attach_driver+0x8c/0xd0 [ 3.640260] bus_for_each_drv+0x84/0xd8 [ 3.640261] __device_attach+0xe4/0x140 [ 3.640263] device_initial_probe+0x1c/0x28 [ 3.640265] bus_probe_device+0xa4/0xb0 [ 3.640266] deferred_probe_work_func+0x7c/0xb8 [ 3.640269] process_one_work+0x2c0/0x768 [ 3.640271] worker_thread+0x4c/0x498 [ 3.640272] kthread+0x14c/0x158 [ 3.640275] ret_from_fork+0x10/0x1c Which seems to be due to the fact that after allocating the uap structure, nothing initializes the spinlock. Its a little confusing, as uart_port_spin_lock_init() is one place where the lock is supposed to be initialized, but it has an exception for the case where the port is a console. This makes it seem like a deeper fix is needed to properly register the console, but I'm not sure what that entails, and Andy suggested that this approach is less invasive. Thus, this patch resolves the issue by initializing the spinlock in the driver, and resolves the resulting warning. Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Jiri Slaby <jslaby@suse.com> Cc: linux-serial@vger.kernel.org Reported-by:
Valentin Schneider <valentin.schneider@arm.com> Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
John Stultz <john.stultz@linaro.org> Reviewed-and-tested-by:
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Russell King authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 88b73ee7 ] The IRQ log output is supposed to appear on a single line. However, commit 3a2dc167 ("i2c: pxa: Update debug function to dump more info on error") resulted in it being printed one-entry-per-line, which is excessively long. Fixing this is not a trivial matter; using pr_cont() doesn't work as the previous dev_dbg() may not have been compiled in, or may be dynamic. Since the rest of this function output is at error level, and is also debug output, promote this to error level as well to avoid this problem. Reduce the number of always zero prefix digits to save screen real- estate. Signed-off-by:
Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by:
Wolfram Sang <wsa@kernel.org> Signed-off-by:
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Matej Dujava authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit fa901333 ] Switch statement does not contain all cases: 8, 16, 24, 32. This patch will add missing one (24) Fixes: 81dee67e ("staging: sm750fb: add sm750 to staging") Signed-off-by:
Matej Dujava <mdujava@kocurkovo.cz> Link: https://lore.kernel.org/r/1588277366-19354-2-git-send-email-mdujava@kocurkovo.czSigned-off-by:
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Raghavendra Rao Ananta authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit e2bd1dcb ] Potentially, hvc_open() can be called in parallel when two tasks calls open() on /dev/hvcX. In such a scenario, if the hp->ops->notifier_add() callback in the function fails, where it sets the tty->driver_data to NULL, the parallel hvc_open() can see this NULL and cause a memory abort. Hence, serialize hvc_open and check if tty->private_data is NULL before proceeding ahead. The issue can be easily reproduced by launching two tasks simultaneously that does nothing but open() and close() on /dev/hvcX. For example: $ ./simple_open_close /dev/hvc0 & ./simple_open_close /dev/hvc0 & Signed-off-by:
Raghavendra Rao Ananta <rananta@codeaurora.org> Link: https://lore.kernel.org/r/20200428032601.22127-1-rananta@codeaurora.orgSigned-off-by:
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Julian Wiedmann authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 75e82bec ] qdio_establish() calls qdio_setup_thinint() via qdio_setup_irq(). If the subsequent qdio_establish_thinint() fails, we miss to put the DSCI again. Thus the DSCI isn't available for re-use. Given enough of such errors, we could end up with having only the shared DSCI available. Merge qdio_setup_thinint() into qdio_establish_thinint(), and deal with such an error internally. Fixes: 779e6e1c ("[S390] qdio: new qdio driver.") Signed-off-by:
Julian Wiedmann <jwi@linux.ibm.com> Reviewed-by:
Benjamin Block <bblock@linux.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com> Signed-off-by:
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Alexander Tsoy authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit f0bd62b6 ] For computation of the the next frame size current value of fs/fps and accumulated fractional parts of fs/fps are used, where values are stored in Q16.16 format. This is quite natural for computing frame size for asynchronous endpoints driven by explicit feedback, since in this case fs/fps is a value provided by the feedback endpoint and it's already in the Q format. If an error is accumulated over time, the device can adjust fs/fps value to prevent buffer overruns/underruns. But for synchronous endpoints the accuracy provided by these computations is not enough. Due to accumulated error the driver periodically produces frames with incorrect size (+/- 1 audio sample). This patch fixes this issue by implementing a different algorithm for frame size computation. It is based on accumulating of the remainders from division fs/fps and it doesn't accumulate errors over time. This new method is enabled for synchronous and adaptive playback endpoints. Signed-off-by:
Alexander Tsoy <alexander@tsoy.me> Link: https://lore.kernel.org/r/20200424022449.14972-1-alexander@tsoy.meSigned-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Tyrel Datwyler authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 4919b33b ] The adapter info MAD is used to send the client info and receive the host info as a response. A persistent buffer is used and as such the client info is overwritten after the response. During the course of a normal adapter reset the client info is refreshed in the buffer in preparation for sending the adapter info MAD. However, in the special case of LPM where we reenable the CRQ instead of a full CRQ teardown and reset we fail to refresh the client info in the adapter info buffer. As a result, after Live Partition Migration (LPM) we erroneously report the host's info as our own. [mkp: typos] Link: https://lore.kernel.org/r/20200603203632.18426-1-tyreld@linux.ibm.comSigned-off-by:
Tyrel Datwyler <tyreld@linux.ibm.com> Signed-off-by:
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Simon Arlott authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 6555781b ] If the cdrom fails to be registered then the device minor should be deallocated. Link: https://lore.kernel.org/r/072dac4b-8402-4de8-36bd-47e7588969cd@0882a8b5-c6c3-11e9-b005-00805fc181feSigned-off-by:
Simon Arlott <simon@octiron.net> Signed-off-by:
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ashimida authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 72d24acc ] When System.map was generated, the kernel used mksysmap to filter the kernel symbols, but all the symbols with the second letter 'L' in the kernel were filtered out, not just the symbols starting with 'dot + L'. For example: ashimida@ubuntu:~/linux$ cat System.map |grep ' .L' ashimida@ubuntu:~/linux$ nm -n vmlinux |grep ' .L' ffff0000088028e0 t bLength_show ...... ffff0000092e0408 b PLLP_OUTC_lock ffff0000092e0410 b PLLP_OUTA_lock The original intent should be to filter out all local symbols starting with '.L', so the dot should be escaped. Fixes: 00902e98 ("mksysmap: Add h8300 local symbol pattern") Signed-off-by:
ashimida <ashimida@linux.alibaba.com> Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org> Signed-off-by:
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Wang Hai authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 98749b71 ] If register_netdev(dev) fails, free_netdev(dev) needs to be called, otherwise a memory leak will occur. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Wang Hai <wanghai38@huawei.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Pingfan Liu authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit be5470e0 ] 'mem=" option is an easy way to put high pressure on memory during some test. Hence after applying the memory limit, instead of total mem, the actual usable memory should be considered when reserving mem for crashkernel. Otherwise the boot up may experience OOM issue. E.g. it would reserve 4G prior to the change and 512M afterward, if passing crashkernel="2G-4G:384M,4G-16G:512M,16G-64G:1G,64G-128G:2G,128G-:4G", and mem=5G on a 256G machine. This issue is powerpc specific because it puts higher priority on fadump and kdump reservation than on "mem=". Referring the following code: if (fadump_reserve_mem() == 0) reserve_crashkernel(); ... /* Ensure that total memory size is page-aligned. */ limit = ALIGN(memory_limit ?: memblock_phys_mem_size(), PAGE_SIZE); memblock_enforce_memory_limit(limit); While on other arches, the effect of "mem=" takes a higher priority and pass through memblock_phys_mem_size() before calling reserve_crashkernel(). Signed-off-by:
Pingfan Liu <kernelfans@gmail.com> Reviewed-by:
Hari Bathini <hbathini@linux.ibm.com> Signed-off-by:
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Xiyu Yang authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit a4abc6b1 ] nfsd4_process_cb_update() invokes svc_xprt_get(), which increases the refcount of the "c->cn_xprt". The reference counting issue happens in one exception handling path of nfsd4_process_cb_update(). When setup callback client failed, the function forgets to decrease the refcnt increased by svc_xprt_get(), causing a refcnt leak. Fix this issue by calling svc_xprt_put() when setup callback client failed. Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Signed-off-by:
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Xiyu Yang authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 7217e6e6 ] In order to create or activate a new node, lpfc_els_unsol_buffer() invokes lpfc_nlp_init() or lpfc_enable_node() or lpfc_nlp_get(), all of them will return a reference of the specified lpfc_nodelist object to "ndlp" with increased refcnt. When lpfc_els_unsol_buffer() returns, local variable "ndlp" becomes invalid, so the refcount should be decreased to keep refcount balanced. The reference counting issue happens in one exception handling path of lpfc_els_unsol_buffer(). When "ndlp" in DEV_LOSS, the function forgets to decrease the refcnt increased by lpfc_nlp_init() or lpfc_enable_node() or lpfc_nlp_get(), causing a refcnt leak. Fix this issue by calling lpfc_nlp_put() when "ndlp" in DEV_LOSS. Link: https://lore.kernel.org/r/1590416184-52592-1-git-send-email-xiyuyang19@fudan.edu.cnReviewed-by:
Daniel Wagner <dwagner@suse.de> Reviewed-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
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Marek Szyprowski authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit d4f9b542 ] WM8994 chip has built-in regulators, which might be used for chip operation. They are controlled by a separate wm8994-regulator driver, which should be loaded before this driver calls regulator_get(), because that driver also provides consumer-supply mapping for the them. If that driver is not yet loaded, regulator core substitute them with dummy regulator, what breaks chip operation, because the built-in regulators are never enabled. Fix this by annotating this driver with MODULE_SOFTDEP() "pre" dependency to "wm8994_regulator" module. Signed-off-by:
Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Qian Cai authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 3e63b94b ] vfio_pci_disable() calls vfio_config_free() but forgets to call free_perm_bits() resulting in memory leaks, unreferenced object 0xc000000c4db2dee0 (size 16): comm "qemu-kvm", pid 4305, jiffies 4295020272 (age 3463.780s) hex dump (first 16 bytes): 00 00 ff 00 ff ff ff ff ff ff ff ff ff ff 00 00 ................ backtrace: [<00000000a6a4552d>] alloc_perm_bits+0x58/0xe0 [vfio_pci] [<00000000ac990549>] vfio_config_init+0xdf0/0x11b0 [vfio_pci] init_pci_cap_msi_perm at drivers/vfio/pci/vfio_pci_config.c:1125 (inlined by) vfio_msi_cap_len at drivers/vfio/pci/vfio_pci_config.c:1180 (inlined by) vfio_cap_len at drivers/vfio/pci/vfio_pci_config.c:1241 (inlined by) vfio_cap_init at drivers/vfio/pci/vfio_pci_config.c:1468 (inlined by) vfio_config_init at drivers/vfio/pci/vfio_pci_config.c:1707 [<000000006db873a1>] vfio_pci_open+0x234/0x700 [vfio_pci] [<00000000630e1906>] vfio_group_fops_unl_ioctl+0x8e0/0xb84 [vfio] [<000000009e34c54f>] ksys_ioctl+0xd8/0x130 [<000000006577923d>] sys_ioctl+0x28/0x40 [<000000006d7b1cf2>] system_call_exception+0x114/0x1e0 [<0000000008ea7dd5>] system_call_common+0xf0/0x278 unreferenced object 0xc000000c4db2e330 (size 16): comm "qemu-kvm", pid 4305, jiffies 4295020272 (age 3463.780s) hex dump (first 16 bytes): 00 ff ff 00 ff ff ff ff ff ff ff ff ff ff 00 00 ................ backtrace: [<000000004c71914f>] alloc_perm_bits+0x44/0xe0 [vfio_pci] [<00000000ac990549>] vfio_config_init+0xdf0/0x11b0 [vfio_pci] [<000000006db873a1>] vfio_pci_open+0x234/0x700 [vfio_pci] [<00000000630e1906>] vfio_group_fops_unl_ioctl+0x8e0/0xb84 [vfio] [<000000009e34c54f>] ksys_ioctl+0xd8/0x130 [<000000006577923d>] sys_ioctl+0x28/0x40 [<000000006d7b1cf2>] system_call_exception+0x114/0x1e0 [<0000000008ea7dd5>] system_call_common+0xf0/0x278 Fixes: 89e1f7d4 ("vfio: Add PCI device driver") Signed-off-by:
Qian Cai <cai@lca.pw> [aw: rolled in follow-up patch] Signed-off-by:
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Emmanuel Nicolet authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 720bc316 ] Since commit dcebd755 ("block: use bio_for_each_bvec() to compute multi-page bvec count"), the kernel will bug_on on the PS3 because bio_split() is called with sectors == 0: kernel BUG at block/bio.c:1853! Oops: Exception in kernel mode, sig: 5 [#1] BE PAGE_SIZE=4K MMU=Hash PREEMPT SMP NR_CPUS=8 NUMA PS3 Modules linked in: firewire_sbp2 rtc_ps3(+) soundcore ps3_gelic(+) \ ps3rom(+) firewire_core ps3vram(+) usb_common crc_itu_t CPU: 0 PID: 97 Comm: blkid Not tainted 5.3.0-rc4 #1 NIP: c00000000027d0d0 LR: c00000000027d0b0 CTR: 0000000000000000 REGS: c00000000135ae90 TRAP: 0700 Not tainted (5.3.0-rc4) MSR: 8000000000028032 <SF,EE,IR,DR,RI> CR: 44008240 XER: 20000000 IRQMASK: 0 GPR00: c000000000289368 c00000000135b120 c00000000084a500 c000000004ff8300 GPR04: 0000000000000c00 c000000004c905e0 c000000004c905e0 000000000000ffff GPR08: 0000000000000000 0000000000000001 0000000000000000 000000000000ffff GPR12: 0000000000000000 c0000000008ef000 000000000000003e 0000000000080001 GPR16: 0000000000000100 000000000000ffff 0000000000000000 0000000000000004 GPR20: c00000000062fd7e 0000000000000001 000000000000ffff 0000000000000080 GPR24: c000000000781788 c00000000135b350 0000000000000080 c000000004c905e0 GPR28: c00000000135b348 c000000004ff8300 0000000000000000 c000000004c90000 NIP [c00000000027d0d0] .bio_split+0x28/0xac LR [c00000000027d0b0] .bio_split+0x8/0xac Call Trace: [c00000000135b120] [c00000000027d130] .bio_split+0x88/0xac (unreliable) [c00000000135b1b0] [c000000000289368] .__blk_queue_split+0x11c/0x53c [c00000000135b2d0] [c00000000028f614] .blk_mq_make_request+0x80/0x7d4 [c00000000135b3d0] [c000000000283a8c] .generic_make_request+0x118/0x294 [c00000000135b4b0] [c000000000283d34] .submit_bio+0x12c/0x174 [c00000000135b580] [c000000000205a44] .mpage_bio_submit+0x3c/0x4c [c00000000135b600] [c000000000206184] .mpage_readpages+0xa4/0x184 [c00000000135b750] [c0000000001ff8fc] .blkdev_readpages+0x24/0x38 [c00000000135b7c0] [c0000000001589f0] .read_pages+0x6c/0x1a8 [c00000000135b8b0] [c000000000158c74] .__do_page_cache_readahead+0x118/0x184 [c00000000135b9b0] [c0000000001591a8] .force_page_cache_readahead+0xe4/0xe8 [c00000000135ba50] [c00000000014fc24] .generic_file_read_iter+0x1d8/0x830 [c00000000135bb50] [c0000000001ffadc] .blkdev_read_iter+0x40/0x5c [c00000000135bbc0] [c0000000001b9e00] .new_sync_read+0x144/0x1a0 [c00000000135bcd0] [c0000000001bc454] .vfs_read+0xa0/0x124 [c00000000135bd70] [c0000000001bc7a4] .ksys_read+0x70/0xd8 [c00000000135be20] [c00000000000a524] system_call+0x5c/0x70 Instruction dump: 7fe3fb78 482e30dc 7c0802a6 482e3085 7c9e2378 f821ff71 7ca42b78 7d3e00d0 7c7d1b78 79290fe0 7cc53378 69290001 <0b090000> 81230028 7bca0020 7929ba62 [ end trace 313fec760f30aa1f ]--- The problem originates from setting the segment boundary of the request queue to -1UL. This makes get_max_segment_size() return zero when offset is zero, whatever the max segment size. The test with BLK_SEG_BOUNDARY_MASK fails and 'mask - (mask & offset) + 1' overflows to zero in the return statement. Not setting the segment boundary and using the default value (BLK_SEG_BOUNDARY_MASK) fixes the problem. Signed-off-by:
Emmanuel Nicolet <emmanuel.nicolet@gmail.com> Signed-off-by:
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Oliver Neukum authored
BugLink: https://bugs.launchpad.net/bugs/1885932 [ Upstream commit 296a193b ] syzkaller reported an URB that should have been killed to be active. We do not understand it, but this should fix the issue if it is real. Signed-off-by:
Oliver Neukum <oneukum@suse.com> Reported-by: syzbot+be5b5f86a162a6c281e6@syzkaller.appspotmail.com Link: https://lore.kernel.org/r/20200507085806.5793-1-oneukum@suse.comSigned-off-by:
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