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Clang's static analysis tool reports these double free memory errors.
security/selinux/ss/services.c:2987:4: warning: Attempt to free released memory [unix.Malloc]
kfree(bnames[i]);
^~~~~~~~~~~~~~~~
security/selinux/ss/services.c:2990:2: warning: Attempt to free released memory [unix.Malloc]
kfree(bvalues);
^~~~~~~~~~~~~~
So improve the security_get_bools error handling by freeing these variables
and setting their return pointers to NULL and the return len to 0
Cc: stable@vger.kernel.org
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Commit 10e68b0 ("Makefile: support compressed debug info") added support for compressed debug sections. Support is detected by checking - does the compiler support -gz=zlib - does the assembler support --compressed-debug-sections=zlib - does the linker support --compressed-debug-sections=zlib However, the gcc driver's support for this option is somewhat convoluted. The driver's builtin specs are set based on the version of binutils that it was configured with. It reports an error if the configure-time linker/assembler (i.e., not necessarily the actual assembler that will be run) do not support the option, but only if the assembler (or linker) is actually invoked when -gz=zlib is passed. The cc-option check in scripts/Kconfig.include does not invoke the assembler, so the gcc driver reports success even if it does not support the option being passed to the assembler. Because the as-option check passes the option directly to the assembler via -Wa,--compressed-debug-sections=zlib, the gcc driver does not see this option and will never report an error. Combined with an installed version of binutils that is more recent than the one the compiler was built with, it is possible for all three tests to succeed, yet an actual compilation with -gz=zlib to fail. Moreover, it is unnecessary to explicitly pass --compressed-debug-sections=zlib to the assembler via -Wa, since the driver will do that automatically when it supports -gz=zlib. Convert the as-option to just -gz=zlib, simplifying it as well as performing a better test of the gcc driver's capabilities. Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Fix the following warnings caused by reusage of the same irq_chip instance for all spmi-gpio gpio_irq_chip instances. Instead embed irq_chip into pmic_gpio_state struct. gpio gpiochip2: (c440000.qcom,spmi:pmic@2:gpio@c000): detected irqchip that is shared with multiple gpiochips: please fix the driver. gpio gpiochip3: (c440000.qcom,spmi:pmic@4:gpio@c000): detected irqchip that is shared with multiple gpiochips: please fix the driver. gpio gpiochip4: (c440000.qcom,spmi:pmic@a:gpio@c000): detected irqchip that is shared with multiple gpiochips: please fix the driver. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20200604002817.667160-1-dmitry.baryshkov@linaro.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use noirq suspend/resume callbacks as other drivers which implement noirq suspend/resume callbacks (Ex:- PCIe) depend on pinctrl driver to configure the signals used by their respective devices in the noirq phase. Signed-off-by: Vidya Sagar <vidyas@nvidia.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20200604174935.26560-1-vidyas@nvidia.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
drivers/pinctrl/pinctrl-mcp23s08_spi.c:129:1-3: WARNING: PTR_ERR_OR_ZERO can be used Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR Generated by: scripts/coccinelle/api/ptr_ret.cocci Fixes: 0f04a81 ("pinctrl: mcp23s08: Split to three parts: core, I²C, SPI") Signed-off-by: kernel test robot <lkp@intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20200608010253.GA79576@44f7ab9e8d59 Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Clang static analysis reports this double free error
security/selinux/ss/conditional.c:139:2: warning: Attempt to free released memory [unix.Malloc]
kfree(node->expr.nodes);
^~~~~~~~~~~~~~~~~~~~~~~
When cond_read_node fails, it calls cond_node_destroy which frees the
node but does not poison the entry in the node list. So when it
returns to its caller cond_read_list, cond_read_list deletes the
partial list. The latest entry in the list will be deleted twice.
So instead of freeing the node in cond_read_node, let list freeing in
code_read_list handle the freeing the problem node along with all of the
earlier nodes.
Because cond_read_node no longer does any error handling, the goto's
the error case are redundant. Instead just return the error code.
Cc: stable@vger.kernel.org
Fixes: 60abd31 ("selinux: convert cond_list to array")
Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Ondrej Mosnacek <omosnace@redhat.com>
[PM: subject line tweaks]
Signed-off-by: Paul Moore <paul@paul-moore.com>
When cc-option and friends evaluate compiler flags, the temporary file $$TMP is created as an output object, and automatically cleaned up. The actual file path of $$TMP is .<pid>.tmp, here <pid> is the process ID of $(shell ...) invoked from cc-option. (Please note $$$$ is the escape sequence of $$). Such garbage files are cleaned up in most cases, but some compiler flags create additional output files. For example, -gsplit-dwarf creates a .dwo file. When CONFIG_DEBUG_INFO_SPLIT=y, you will see a bunch of .<pid>.dwo files left in the top of build directories. You may not notice them unless you do 'ls -a', but the garbage files will increase every time you run 'make'. This commit changes the temporary object path to .tmp_<pid>/tmp, and removes .tmp_<pid> directory when exiting. Separate build artifacts such as *.dwo will be cleaned up all together because their file paths are usually determined based on the base name of the object. Another example is -ftest-coverage, which outputs the coverage data into <base-name-of-object>.gcno Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
cc-option and as-option are almost the same; both pass the flag to $(CC). The main difference is the cc-option stops before the assemble stage (-S option) whereas as-option stops after (-c option). I chose -S because it is slightly faster, but $(cc-option,-gz=zlib) returns a wrong result (https://lkml.org/lkml/2020/6/9/1529). It has been fixed by commit 7b16994 ("Makefile: Improve compressed debug info support detection"), but the assembler should always be invoked for more reliable compiler option tests. However, you cannot simply replace -S with -c because the following code in lib/Kconfig.debug would break: depends on $(cc-option,-gsplit-dwarf) The combination of -c and -gsplit-dwarf does not accept /dev/null as output. $ cat /dev/null | gcc -gsplit-dwarf -S -x c - -o /dev/null $ echo $? 0 $ cat /dev/null | gcc -gsplit-dwarf -c -x c - -o /dev/null objcopy: Warning: '/dev/null' is not an ordinary file $ echo $? 1 $ cat /dev/null | gcc -gsplit-dwarf -c -x c - -o tmp.o $ echo $? 0 There is another flag that creates an separate file based on the object file path: $ cat /dev/null | gcc -ftest-coverage -c -x c - -o /dev/null <stdin>:1: error: cannot open /dev/null.gcno So, we cannot use /dev/null to sink the output. Align the cc-option implementation with scripts/Kbuild.include. With -c option used in cc-option, as-option is unneeded. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Will Deacon <will@kernel.org>
This patch fixes a spelling typo in scripts/headers_install.sh Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
clang static analysis reports an undefined return
security/selinux/ss/conditional.c:79:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn]
return s[0];
^~~~~~~~~~~
static int cond_evaluate_expr( ...
{
u32 i;
int s[COND_EXPR_MAXDEPTH];
for (i = 0; i < expr->len; i++)
...
return s[0];
When expr->len is 0, the loop which sets s[0] never runs.
So return -1 if the loop never runs.
Cc: stable@vger.kernel.org
Signed-off-by: Tom Rix <trix@redhat.com>
Acked-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
…ource leak in case of error in 'imx_pinctrl_probe()'" This reverts commit ba40324. After commit 26d8cde ("pinctrl: freescale: imx: add shared input select reg support"). i.MX7D has two iomux controllers iomuxc and iomuxc-lpsr which share select_input register for daisy chain settings. If use 'devm_of_iomap()', when probe the iomuxc-lpsr, will call devm_request_mem_region() for the region <0x30330000-0x3033ffff> for the first time. Then, next time when probe the iomuxc, API devm_platform_ioremap_resource() will also use the API devm_request_mem_region() for the share region <0x30330000-0x3033ffff> again, then cause issue, log like below: [ 0.179561] imx7d-pinctrl 302c0000.iomuxc-lpsr: initialized IMX pinctrl driver [ 0.191742] imx7d-pinctrl 30330000.pinctrl: can't request region for resource [mem 0x30330000-0x3033ffff] [ 0.191842] imx7d-pinctrl: probe of 30330000.pinctrl failed with error -16 Fixes: ba40324 ("pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'") Signed-off-by: Haibo Chen <haibo.chen@nxp.com> Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com> Link: https://lore.kernel.org/r/1591673223-1680-1-git-send-email-haibo.chen@nxp.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
The patch adds missing qpic data pins to qpic pingroup. These pins are necessary for the qpic nand to work. Fixes: ef1ea54 ("pinctrl: qcom: Add ipq6018 pinctrl driver") Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org> Link: https://lore.kernel.org/r/1592541089-17700-1-git-send-email-sivaprak@codeaurora.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Use the correct the function name in the documentation for
"pcs_parse_one_pinctrl_entry()".
"smux_parse_one_pinctrl_entry()" appears to be an artifact from the
development of a prior patch series ("simple pinmux driver") which
transformed into pinctrl-single.
Signed-off-by: Drew Fustini <drew@beagleboard.org>
Link: https://lore.kernel.org/r/20200612112758.GA3407886@x1
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This reverts commit e0b250b, which broke build systems that need to install files to a certain path, but do not set INSTALL_MOD_PATH when invoking 'make install'. $ make INSTALL_PATH=/tmp/destdir install mkdir: cannot create directory ‘/lib/modules/5.8.0-rc1+/’: Permission denied Makefile:1342: recipe for target '_builtin_inst_' failed make: *** [_builtin_inst_] Error 1 While modules.builtin is useful also for CONFIG_MODULES=n, this change in the behavior is quite unexpected. Maybe "make modules_install" can install modules.builtin irrespective of CONFIG_MODULES as Jonas originally suggested. Anyway, that commit should be reverted ASAP. Reported-by: Douglas Anderson <dianders@chromium.org> Reported-by: Guenter Roeck <linux@roeck-us.net> Cc: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net>
This userspace program includes UAPI headers exported to usr/include/. 'make headers' always works for the target architecture (i.e. the same architecture as the kernel), so the sample program should be built for the target as well. Kbuild now supports 'userprogs' for that. I also guarded the CONFIG option by 'depends on CC_CAN_LINK' because $(CC) may not provide libc. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
…ernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - fix -gz=zlib compiler option test for CONFIG_DEBUG_INFO_COMPRESSED - improve cc-option in scripts/Kbuild.include to clean up temp files - improve cc-option in scripts/Kconfig.include for more reliable compile option test - do not copy modules.builtin by 'make install' because it would break existing systems - use 'userprogs' syntax for watch_queue sample * tag 'kbuild-fixes-v5.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: samples: watch_queue: build sample program for target architecture Revert "Makefile: install modules.builtin even if CONFIG_MODULES=n" scripts: Fix typo in headers_install.sh kconfig: unify cc-option and as-option kbuild: improve cc-option to clean up all temporary files Makefile: Improve compressed debug info support detection
…el/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Some early fixes collected during the first week after the merge
window, all pretty self-evident, with the details below. The revert is
the crucial thing.
- Fix a warning on the Qualcomm SPMI GPIO chip being instatiated
twice without a unique irqchip struct
- Use the noirq variants of the suspend and resume callbacks in the
Tegra driver
- Clean up the errorpath on the MCP23s08 driver
- Revert the use of devm_of_iomap() in the Freescale driver as it was
regressing the platform
- Add some missing pins in the Qualcomm IPQ6018 driver
- Fix a simple documentation bug in the pinctrl-single driver"
* tag 'pinctrl-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: single: fix function name in documentation
pinctrl: qcom: ipq6018 Add missing pins in qpic pin group
Revert "pinctrl: freescale: imx: Use 'devm_of_iomap()' to avoid a resource leak in case of error in 'imx_pinctrl_probe()'"
pinctrl: mcp23s08: Split to three parts: fix ptr_ret.cocci warnings
pinctrl: tegra: Use noirq suspend/resume callbacks
pinctrl: qcom: spmi-gpio: fix warning about irq chip reusage
…/kernel/git/pcmoore/selinux Pull SELinux fixes from Paul Moore: "Three small patches to fix problems in the SELinux code, all found via clang. Two patches fix potential double-free conditions and one fixes an undefined return value" * tag 'selinux-pr-20200621' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: fix undefined return of cond_evaluate_expr selinux: fix a double free in cond_read_node()/cond_read_list() selinux: fix double free
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In list_add, the first variable is the new node and the second is the list head. The function is called with a wrong order causing NULL dereference: [ 15.527030] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 [ 15.542317] Mem abort info: [ 15.545152] ESR = 0x96000044 [ 15.548248] EC = 0x25: DABT (current EL), IL = 32 bits [ 15.553624] SET = 0, FnV = 0 [ 15.556715] EA = 0, S1PTW = 0 [ 15.559892] Data abort info: [ 15.562799] ISV = 0, ISS = 0x00000044 [ 15.566678] CM = 0, WnR = 1 [ 15.569683] user pgtable: 4k pages, 48-bit VAs, pgdp=00000001373f0000 [ 15.576196] [0000000000000008] pgd=0000000000000000, p4d=0000000000000000 [ 15.583101] Internal error: Oops: 96000044 [#1] PREEMPT SMP [ 15.588747] Modules linked in: mtk_mdp(+) cfg80211 v4l2_mem2mem videobuf2_vmalloc videobuf2_dma_contig videobuf2_memops videobuf2_v4l2 videobuf2_common vide odev mt8173_rt5650 smsc95xx usbnet ecdh_generic ecc snd_soc_rt5645 mc mt8173_afe_pcm rfkill cros_ec_sensors snd_soc_mtk_common elan_i2c crct10dif_ce cros_ec_se nsors_core snd_soc_rl6231 elants_i2c industrialio_triggered_buffer kfifo_buf mtk_vpu cros_ec_chardev cros_usbpd_charger cros_usbpd_logger sbs_battery display_c onnector pwm_bl ip_tables x_tables ipv6 [ 15.634295] CPU: 0 PID: 188 Comm: systemd-udevd Not tainted 5.9.0-rc2+ #69 [ 15.641242] Hardware name: Google Elm (DT) [ 15.645381] pstate: 20000005 (nzCv daif -PAN -UAO BTYPE=--) [ 15.651022] pc : mtk_mdp_probe+0x134/0x3a8 [mtk_mdp] [ 15.656041] lr : mtk_mdp_probe+0x128/0x3a8 [mtk_mdp] [ 15.661055] sp : ffff80001255b910 [ 15.669548] x29: ffff80001255b910 x28: 0000000000000000 [ 15.679973] x27: ffff800009089bf8 x26: ffff0000fafde800 [ 15.690347] x25: ffff0000ff7d2768 x24: ffff800009089010 [ 15.700670] x23: ffff0000f01a7cd8 x22: ffff0000fafde810 [ 15.710940] x21: ffff0000f01a7c80 x20: ffff0000f0c3c180 [ 15.721148] x19: ffff0000ff7f1618 x18: 0000000000000010 [ 15.731289] x17: 0000000000000000 x16: 0000000000000000 [ 15.741375] x15: 0000000000aaaaaa x14: 0000000000000020 [ 15.751399] x13: 00000000ffffffff x12: 0000000000000020 [ 15.761363] x11: 0000000000000028 x10: 0101010101010101 [ 15.771279] x9 : 0000000000000004 x8 : 7f7f7f7f7f7f7f7f [ 15.781148] x7 : 646bff6171606b2b x6 : 0000000000806d65 [ 15.790981] x5 : ffff0000ff7f8360 x4 : 0000000000000000 [ 15.800767] x3 : 0000000000000004 x2 : 0000000000000001 [ 15.810501] x1 : 0000000000000005 x0 : 0000000000000000 [ 15.820171] Call trace: [ 15.826944] mtk_mdp_probe+0x134/0x3a8 [mtk_mdp] [ 15.835908] platform_drv_probe+0x54/0xa8 [ 15.844247] really_probe+0xe4/0x3b0 [ 15.852104] driver_probe_device+0x58/0xb8 [ 15.860457] device_driver_attach+0x74/0x80 [ 15.868854] __driver_attach+0x58/0xe0 [ 15.876770] bus_for_each_dev+0x70/0xc0 [ 15.884726] driver_attach+0x24/0x30 [ 15.892374] bus_add_driver+0x14c/0x1f0 [ 15.900295] driver_register+0x64/0x120 [ 15.908168] __platform_driver_register+0x48/0x58 [ 15.916864] mtk_mdp_driver_init+0x20/0x1000 [mtk_mdp] [ 15.925943] do_one_initcall+0x54/0x1b4 [ 15.933662] do_init_module+0x54/0x200 [ 15.941246] load_module+0x1cf8/0x22d0 [ 15.948798] __do_sys_finit_module+0xd8/0xf0 [ 15.956829] __arm64_sys_finit_module+0x20/0x30 [ 15.965082] el0_svc_common.constprop.0+0x6c/0x168 [ 15.973527] do_el0_svc+0x24/0x90 [ 15.980403] el0_sync_handler+0x90/0x198 [ 15.987867] el0_sync+0x158/0x180 [ 15.994653] Code: 9400014b 2a0003fc 35000920 f9400280 (f9000417) [ 16.004299] ---[ end trace 76fee0203f9898e5 ]--- Fixes: 86698b9 ("media: mtk-mdp: convert mtk_mdp_dev.comp array to list") Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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CHECK: Alignment should match open parenthesis #24: FILE: drivers/mfd/tps65910.c:296: + ret = regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL, DEVCTRL_CK32K_CTRL_MASK); CHECK: Alignment should match open parenthesis #33: FILE: drivers/mfd/tps65910.c:318: + ret = regmap_set_bits(tps65910->regmap, TPS65910_DEVCTRL, DEVCTRL_DEV_SLP_MASK); CHECK: Alignment should match open parenthesis #42: FILE: drivers/mfd/tps65910.c:326: + ret = regmap_set_bits(tps65910->regmap, TPS65910_SLEEP_KEEP_RES_ON, CHECK: Alignment should match open parenthesis #51: FILE: drivers/mfd/tps65910.c:336: + ret = regmap_set_bits(tps65910->regmap, TPS65910_SLEEP_KEEP_RES_ON, CHECK: Alignment should match open parenthesis #60: FILE: drivers/mfd/tps65910.c:346: + ret = regmap_set_bits(tps65910->regmap, TPS65910_SLEEP_KEEP_RES_ON, CHECK: Alignment should match open parenthesis #69: FILE: drivers/mfd/tps65910.c:358: + regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL, DEVCTRL_DEV_SLP_MASK); CHECK: Alignment should match open parenthesis #78: FILE: drivers/mfd/tps65910.c:440: + if (regmap_set_bits(tps65910->regmap, TPS65910_DEVCTRL, DEVCTRL_PWR_OFF_MASK) < 0) CHECK: Alignment should match open parenthesis #83: FILE: drivers/mfd/tps65910.c:444: + regmap_clear_bits(tps65910->regmap, TPS65910_DEVCTRL, DEVCTRL_DEV_ON_MASK); Signed-off-by: Lee Jones <lee.jones@linaro.org>
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In mtk_iommu_runtime_resume always enable the clk, even if m4u_dom is null. Otherwise the 'suspend' cb might disable the clk which is already disabled causing the warning: [ 1.586104] infra_m4u already disabled [ 1.586133] WARNING: CPU: 0 PID: 121 at drivers/clk/clk.c:952 clk_core_disable+0xb0/0xb8 [ 1.594391] mtk-iommu 10205000.iommu: bound 18001000.larb (ops mtk_smi_larb_component_ops) [ 1.598108] Modules linked in: [ 1.598114] CPU: 0 PID: 121 Comm: kworker/0:2 Not tainted 5.12.0-rc5 #69 [ 1.609246] mtk-iommu 10205000.iommu: bound 14027000.larb (ops mtk_smi_larb_component_ops) [ 1.617487] Hardware name: Google Elm (DT) [ 1.617491] Workqueue: pm pm_runtime_work [ 1.620545] mtk-iommu 10205000.iommu: bound 19001000.larb (ops mtk_smi_larb_component_ops) [ 1.627229] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--) [ 1.659297] pc : clk_core_disable+0xb0/0xb8 [ 1.663475] lr : clk_core_disable+0xb0/0xb8 [ 1.667652] sp : ffff800011b9bbe0 [ 1.670959] x29: ffff800011b9bbe0 x28: 0000000000000000 [ 1.676267] x27: ffff800011448000 x26: ffff8000100cfd98 [ 1.681574] x25: ffff800011b9bd48 x24: 0000000000000000 [ 1.686882] x23: 0000000000000000 x22: ffff8000106fad90 [ 1.692189] x21: 000000000000000a x20: ffff0000c0048500 [ 1.697496] x19: ffff0000c0048500 x18: ffffffffffffffff [ 1.702804] x17: 0000000000000000 x16: 0000000000000000 [ 1.708112] x15: ffff800011460300 x14: fffffffffffe0000 [ 1.713420] x13: ffff8000114602d8 x12: 0720072007200720 [ 1.718727] x11: 0720072007200720 x10: 0720072007200720 [ 1.724035] x9 : ffff800011b9bbe0 x8 : ffff800011b9bbe0 [ 1.729342] x7 : 0000000000000009 x6 : ffff8000114b8328 [ 1.734649] x5 : 0000000000000000 x4 : 0000000000000000 [ 1.739956] x3 : 00000000ffffffff x2 : ffff800011460298 [ 1.745263] x1 : 1af1d7de276f4500 x0 : 0000000000000000 [ 1.750572] Call trace: [ 1.753010] clk_core_disable+0xb0/0xb8 [ 1.756840] clk_core_disable_lock+0x24/0x40 [ 1.761105] clk_disable+0x20/0x30 [ 1.764501] mtk_iommu_runtime_suspend+0x88/0xa8 [ 1.769114] pm_generic_runtime_suspend+0x2c/0x48 [ 1.773815] __rpm_callback+0xe0/0x178 [ 1.777559] rpm_callback+0x24/0x88 [ 1.781041] rpm_suspend+0xdc/0x470 [ 1.784523] rpm_idle+0x12c/0x170 [ 1.787831] pm_runtime_work+0xa8/0xc0 [ 1.791573] process_one_work+0x1e8/0x360 [ 1.795580] worker_thread+0x44/0x478 [ 1.799237] kthread+0x150/0x158 [ 1.802460] ret_from_fork+0x10/0x30 [ 1.806034] ---[ end trace 82402920ef64573b ]--- [ 1.810728] ------------[ cut here ]------------ In addition, we now don't need to enable the clock from the function mtk_iommu_hw_init since it is already enabled by the resume. Fixes: c0b5758 ("iommu/mediatek: Add power-domain operation") Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by: Yong Wu <yong.wu@mediatek.com> Link: https://lore.kernel.org/r/20210416105449.4744-1-dafna.hirschfeld@collabora.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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Avoids the following WARN: [ 3.009556] ------------[ cut here ]------------ [ 3.014306] WARNING: CPU: 7 PID: 109 at drivers/gpu/drm/drm_dp_helper.c:1796 drm_dp_aux_register+0xa4/0xac [ 3.024209] Modules linked in: [ 3.027351] CPU: 7 PID: 109 Comm: kworker/7:8 Not tainted 5.10.47 #69 [ 3.033958] Hardware name: Google Lazor (rev1 - 2) (DT) [ 3.039323] Workqueue: events deferred_probe_work_func [ 3.044596] pstate: 60c00009 (nZCv daif +PAN +UAO -TCO BTYPE=--) [ 3.050761] pc : drm_dp_aux_register+0xa4/0xac [ 3.055329] lr : dp_aux_register+0x40/0x88 [ 3.059538] sp : ffffffc010ad3920 [ 3.062948] x29: ffffffc010ad3920 x28: ffffffa64196ac70 [ 3.067239] mmc1: Command Queue Engine enabled [ 3.068406] x27: ffffffa64196ac68 x26: 0000000000000001 [ 3.068407] x25: 0000000000000002 x24: 0000000000000060 [ 3.068409] x23: ffffffa642ab3400 x22: ffffffe126c10e5b [ 3.068410] x21: ffffffa641dc3188 x20: ffffffa641963c10 [ 3.068412] x19: ffffffa642aba910 x18: 00000000ffff0a00 [ 3.068414] x17: 000000476f8e002a x16: 00000000000000b8 [ 3.073008] mmc1: new HS400 Enhanced strobe MMC card at address 0001 [ 3.078448] x15: ffffffffffffffff x14: ffffffffffffffff [ 3.078450] x13: 0000000000000030 x12: 0000000000000030 [ 3.078452] x11: 0101010101010101 x10: ffffffe12647a914 [ 3.078453] x9 : ffffffe12647a8cc x8 : 0000000000000000 [ 3.084452] mmcblk1: mmc1:0001 DA4032 29.1 GiB [ 3.089372] [ 3.089372] x7 : 6c6064717372fefe x6 : ffffffa642b11494 [ 3.089374] x5 : 0000000000000000 x4 : 6d006c657869ffff [ 3.089375] x3 : 000000006c657869 x2 : 000000000000000c [ 3.089376] x1 : ffffffe126c3ae3c x0 : ffffffa642aba910 [ 3.089381] Call trace: [ 3.094931] mmcblk1boot0: mmc1:0001 DA4032 partition 1 4.00 MiB [ 3.100291] drm_dp_aux_register+0xa4/0xac [ 3.100292] dp_aux_register+0x40/0x88 [ 3.100294] dp_display_bind+0x64/0xcc [ 3.100295] component_bind_all+0xdc/0x210 [ 3.100298] msm_drm_bind+0x1e8/0x5d4 [ 3.100301] try_to_bring_up_master+0x168/0x1b0 [ 3.105861] mmcblk1boot1: mmc1:0001 DA4032 partition 2 4.00 MiB [ 3.112282] __component_add+0xa0/0x158 [ 3.112283] component_add+0x1c/0x28 [ 3.112284] dp_display_probe+0x33c/0x380 [ 3.112286] platform_drv_probe+0x9c/0xbc [ 3.112287] really_probe+0x140/0x35c [ 3.112289] driver_probe_device+0x84/0xc0 [ 3.112292] __device_attach_driver+0x94/0xb0 [ 3.117967] mmcblk1rpmb: mmc1:0001 DA4032 partition 3 16.0 MiB, chardev (239:0) [ 3.123201] bus_for_each_drv+0x8c/0xd8 [ 3.123202] __device_attach+0xc4/0x150 [ 3.123204] device_initial_probe+0x1c/0x28 [ 3.123205] bus_probe_device+0x3c/0x9c [ 3.123206] deferred_probe_work_func+0x90/0xcc [ 3.123211] process_one_work+0x218/0x3ec [ 3.131976] mmcblk1: p1 p2 p3 p4 p5 p6 p7 p8 p9 p10 p11 p12 [ 3.134123] worker_thread+0x288/0x3e8 [ 3.134124] kthread+0x148/0x1b0 [ 3.134127] ret_from_fork+0x10/0x30 [ 3.134128] ---[ end trace cfb9fce3f70f824d ]--- Signed-off-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20210714152910.55093-1-sean@poorly.run Signed-off-by: Rob Clark <robdclark@chromium.org>
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lockdep complains that in omap-aes, the list_lock is taken both with
softirqs enabled at probe time, and also in softirq context, which
could lead to a deadlock:
================================
WARNING: inconsistent lock state
5.14.0-rc1-00035-gc836005b01c5-dirty #69 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
ksoftirqd/0/7 [HC0[0]:SC1[3]:HE1:SE0] takes:
bf00e014 (list_lock){+.?.}-{2:2}, at: omap_aes_find_dev+0x18/0x54 [omap_aes_driver]
{SOFTIRQ-ON-W} state was registered at:
_raw_spin_lock+0x40/0x50
omap_aes_probe+0x1d4/0x664 [omap_aes_driver]
platform_probe+0x58/0xb8
really_probe+0xbc/0x314
__driver_probe_device+0x80/0xe4
driver_probe_device+0x30/0xc8
__driver_attach+0x70/0xf4
bus_for_each_dev+0x70/0xb4
bus_add_driver+0xf0/0x1d4
driver_register+0x74/0x108
do_one_initcall+0x84/0x2e4
do_init_module+0x5c/0x240
load_module+0x221c/0x2584
sys_finit_module+0xb0/0xec
ret_fast_syscall+0x0/0x2c
0xbed90b30
irq event stamp: 111800
hardirqs last enabled at (111800): [<c02a21e4>] __kmalloc+0x484/0x5ec
hardirqs last disabled at (111799): [<c02a21f0>] __kmalloc+0x490/0x5ec
softirqs last enabled at (111776): [<c01015f0>] __do_softirq+0x2b8/0x4d0
softirqs last disabled at (111781): [<c0135948>] run_ksoftirqd+0x34/0x50
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(list_lock);
<Interrupt>
lock(list_lock);
*** DEADLOCK ***
2 locks held by ksoftirqd/0/7:
#0: c0f5e8c8 (rcu_read_lock){....}-{1:2}, at: netif_receive_skb+0x6c/0x260
#1: c0f5e8c8 (rcu_read_lock){....}-{1:2}, at: ip_local_deliver_finish+0x2c/0xdc
stack backtrace:
CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 5.14.0-rc1-00035-gc836005b01c5-dirty #69
Hardware name: Generic AM43 (Flattened Device Tree)
[<c010e6e0>] (unwind_backtrace) from [<c010b9d0>] (show_stack+0x10/0x14)
[<c010b9d0>] (show_stack) from [<c017c640>] (mark_lock.part.17+0x5bc/0xd04)
[<c017c640>] (mark_lock.part.17) from [<c017d9e4>] (__lock_acquire+0x960/0x2fa4)
[<c017d9e4>] (__lock_acquire) from [<c0180980>] (lock_acquire+0x10c/0x358)
[<c0180980>] (lock_acquire) from [<c093d324>] (_raw_spin_lock_bh+0x44/0x58)
[<c093d324>] (_raw_spin_lock_bh) from [<bf00b258>] (omap_aes_find_dev+0x18/0x54 [omap_aes_driver])
[<bf00b258>] (omap_aes_find_dev [omap_aes_driver]) from [<bf00b328>] (omap_aes_crypt+0x94/0xd4 [omap_aes_driver])
[<bf00b328>] (omap_aes_crypt [omap_aes_driver]) from [<c08ac6d0>] (esp_input+0x1b0/0x2c8)
[<c08ac6d0>] (esp_input) from [<c08c9e90>] (xfrm_input+0x410/0x1290)
[<c08c9e90>] (xfrm_input) from [<c08b6374>] (xfrm4_esp_rcv+0x54/0x11c)
[<c08b6374>] (xfrm4_esp_rcv) from [<c0838840>] (ip_protocol_deliver_rcu+0x48/0x3bc)
[<c0838840>] (ip_protocol_deliver_rcu) from [<c0838c50>] (ip_local_deliver_finish+0x9c/0xdc)
[<c0838c50>] (ip_local_deliver_finish) from [<c0838dd8>] (ip_local_deliver+0x148/0x1b0)
[<c0838dd8>] (ip_local_deliver) from [<c0838f5c>] (ip_rcv+0x11c/0x180)
[<c0838f5c>] (ip_rcv) from [<c077e3a4>] (__netif_receive_skb_one_core+0x54/0x74)
[<c077e3a4>] (__netif_receive_skb_one_core) from [<c077e588>] (netif_receive_skb+0xa8/0x260)
[<c077e588>] (netif_receive_skb) from [<c068d6d4>] (cpsw_rx_handler+0x224/0x2fc)
[<c068d6d4>] (cpsw_rx_handler) from [<c0688ccc>] (__cpdma_chan_process+0xf4/0x188)
[<c0688ccc>] (__cpdma_chan_process) from [<c068a0c0>] (cpdma_chan_process+0x3c/0x5c)
[<c068a0c0>] (cpdma_chan_process) from [<c0690e14>] (cpsw_rx_mq_poll+0x44/0x98)
[<c0690e14>] (cpsw_rx_mq_poll) from [<c0780810>] (__napi_poll+0x28/0x268)
[<c0780810>] (__napi_poll) from [<c0780c64>] (net_rx_action+0xcc/0x204)
[<c0780c64>] (net_rx_action) from [<c0101478>] (__do_softirq+0x140/0x4d0)
[<c0101478>] (__do_softirq) from [<c0135948>] (run_ksoftirqd+0x34/0x50)
[<c0135948>] (run_ksoftirqd) from [<c01583b8>] (smpboot_thread_fn+0xf4/0x1d8)
[<c01583b8>] (smpboot_thread_fn) from [<c01546dc>] (kthread+0x14c/0x174)
[<c01546dc>] (kthread) from [<c010013c>] (ret_from_fork+0x14/0x38)
...
The omap-des and omap-sham drivers appear to have a similar issue.
Fix this by using spin_{,un}lock_bh() around device list access in all
the probe and remove functions.
Signed-off-by: Ben Hutchings <ben.hutchings@mind.be>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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xfstest generic/587 reports a deadlock issue as below: ====================================================== WARNING: possible circular locking dependency detected 5.14.0-rc1 #69 Not tainted ------------------------------------------------------ repquota/8606 is trying to acquire lock: ffff888022ac9320 (&sb->s_type->i_mutex_key#18){+.+.}-{3:3}, at: f2fs_quota_sync+0x207/0x300 [f2fs] but task is already holding lock: ffff8880084bcde8 (&sbi->quota_sem){.+.+}-{3:3}, at: f2fs_quota_sync+0x59/0x300 [f2fs] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (&sbi->quota_sem){.+.+}-{3:3}: __lock_acquire+0x648/0x10b0 lock_acquire+0x128/0x470 down_read+0x3b/0x2a0 f2fs_quota_sync+0x59/0x300 [f2fs] f2fs_quota_on+0x48/0x100 [f2fs] do_quotactl+0x5e3/0xb30 __x64_sys_quotactl+0x23a/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae -> #1 (&sbi->cp_rwsem){++++}-{3:3}: __lock_acquire+0x648/0x10b0 lock_acquire+0x128/0x470 down_read+0x3b/0x2a0 f2fs_unlink+0x353/0x670 [f2fs] vfs_unlink+0x1c7/0x380 do_unlinkat+0x413/0x4b0 __x64_sys_unlinkat+0x50/0xb0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae -> #0 (&sb->s_type->i_mutex_key#18){+.+.}-{3:3}: check_prev_add+0xdc/0xb30 validate_chain+0xa67/0xb20 __lock_acquire+0x648/0x10b0 lock_acquire+0x128/0x470 down_write+0x39/0xc0 f2fs_quota_sync+0x207/0x300 [f2fs] do_quotactl+0xaff/0xb30 __x64_sys_quotactl+0x23a/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae other info that might help us debug this: Chain exists of: &sb->s_type->i_mutex_key#18 --> &sbi->cp_rwsem --> &sbi->quota_sem Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sbi->quota_sem); lock(&sbi->cp_rwsem); lock(&sbi->quota_sem); lock(&sb->s_type->i_mutex_key#18); *** DEADLOCK *** 3 locks held by repquota/8606: #0: ffff88801efac0e0 (&type->s_umount_key#53){++++}-{3:3}, at: user_get_super+0xd9/0x190 #1: ffff8880084bc380 (&sbi->cp_rwsem){++++}-{3:3}, at: f2fs_quota_sync+0x3e/0x300 [f2fs] #2: ffff8880084bcde8 (&sbi->quota_sem){.+.+}-{3:3}, at: f2fs_quota_sync+0x59/0x300 [f2fs] stack backtrace: CPU: 6 PID: 8606 Comm: repquota Not tainted 5.14.0-rc1 #69 Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 Call Trace: dump_stack_lvl+0xce/0x134 dump_stack+0x17/0x20 print_circular_bug.isra.0.cold+0x239/0x253 check_noncircular+0x1be/0x1f0 check_prev_add+0xdc/0xb30 validate_chain+0xa67/0xb20 __lock_acquire+0x648/0x10b0 lock_acquire+0x128/0x470 down_write+0x39/0xc0 f2fs_quota_sync+0x207/0x300 [f2fs] do_quotactl+0xaff/0xb30 __x64_sys_quotactl+0x23a/0x4e0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f883b0b4efe The root cause is ABBA deadlock of inode lock and cp_rwsem, reorder locks in f2fs_quota_sync() as below to fix this issue: - lock inode - lock cp_rwsem - lock quota_sem Fixes: db6ec53 ("f2fs: add a rw_sem to cover quota flag changes") Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Commit fb541ca ("md: remove lock_bdev / unlock_bdev") removes wrappers for blkdev_get/blkdev_put. However, the uninitialized local static variable of pointer type 'claim_rdev' in md_import_device() is NULL, which leads to the following warning call trace: WARNING: CPU: 22 PID: 1037 at block/bdev.c:577 bd_prepare_to_claim+0x131/0x150 CPU: 22 PID: 1037 Comm: mdadm Not tainted 6.2.0-rc3+ #69 .. RIP: 0010:bd_prepare_to_claim+0x131/0x150 .. Call Trace: <TASK> ? _raw_spin_unlock+0x15/0x30 ? iput+0x6a/0x220 blkdev_get_by_dev.part.0+0x4b/0x300 md_import_device+0x126/0x1d0 new_dev_store+0x184/0x240 md_attr_store+0x80/0xf0 kernfs_fop_write_iter+0x128/0x1c0 vfs_write+0x2be/0x3c0 ksys_write+0x5f/0xe0 do_syscall_64+0x38/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc It turns out the md device cannot be used: md: could not open device unknown-block(259,0). md: md127 stopped. Fix the issue by declaring the local static variable of struct type and passing the pointer of the variable to blkdev_get_by_dev(). Fixes: fb541ca ("md: remove lock_bdev / unlock_bdev") Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Adrian Huang <ahuang12@lenovo.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Song Liu <song@kernel.org>
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The flexspi on imx8ulp only has 16 LUTs, and imx8mm flexspi has 32 LUTs, so correct the compatible string here, otherwise will meet below error: [ 1.119072] ------------[ cut here ]------------ [ 1.123926] WARNING: CPU: 0 PID: 1 at drivers/spi/spi-nxp-fspi.c:855 nxp_fspi_exec_op+0xb04/0xb64 [ 1.133239] Modules linked in: [ 1.136448] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.11.0-rc6-next-20240902-00001-g131bf9439dd9 #69 [ 1.146821] Hardware name: NXP i.MX8ULP EVK (DT) [ 1.151647] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1.158931] pc : nxp_fspi_exec_op+0xb04/0xb64 [ 1.163496] lr : nxp_fspi_exec_op+0xa34/0xb64 [ 1.168060] sp : ffff80008002b2a0 [ 1.171526] x29: ffff80008002b2d0 x28: 0000000000000000 x27: 0000000000000000 [ 1.179002] x26: ffff2eb645542580 x25: ffff800080610014 x24: ffff800080610000 [ 1.186480] x23: ffff2eb645548080 x22: 0000000000000006 x21: ffff2eb6455425e0 [ 1.193956] x20: 0000000000000000 x19: ffff80008002b5e0 x18: ffffffffffffffff [ 1.201432] x17: ffff2eb644467508 x16: 0000000000000138 x15: 0000000000000002 [ 1.208907] x14: 0000000000000000 x13: ffff2eb6400d8080 x12: 00000000ffffff00 [ 1.216378] x11: 0000000000000000 x10: ffff2eb6400d8080 x9 : ffff2eb697adca80 [ 1.223850] x8 : ffff2eb697ad3cc0 x7 : 0000000100000000 x6 : 0000000000000001 [ 1.231324] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 00000000000007a6 [ 1.238795] x2 : 0000000000000000 x1 : 00000000000001ce x0 : 00000000ffffff92 [ 1.246267] Call trace: [ 1.248824] nxp_fspi_exec_op+0xb04/0xb64 [ 1.253031] spi_mem_exec_op+0x3a0/0x430 [ 1.257139] spi_nor_read_id+0x80/0xcc [ 1.261065] spi_nor_scan+0x1ec/0xf10 [ 1.264901] spi_nor_probe+0x108/0x2fc [ 1.268828] spi_mem_probe+0x6c/0xbc [ 1.272574] spi_probe+0x84/0xe4 [ 1.275958] really_probe+0xbc/0x29c [ 1.279713] __driver_probe_device+0x78/0x12c [ 1.284277] driver_probe_device+0xd8/0x15c [ 1.288660] __device_attach_driver+0xb8/0x134 [ 1.293316] bus_for_each_drv+0x88/0xe8 [ 1.297337] __device_attach+0xa0/0x190 [ 1.301353] device_initial_probe+0x14/0x20 [ 1.305734] bus_probe_device+0xac/0xb0 [ 1.309752] device_add+0x5d0/0x790 [ 1.313408] __spi_add_device+0x134/0x204 [ 1.317606] of_register_spi_device+0x3b4/0x590 [ 1.322348] spi_register_controller+0x47c/0x754 [ 1.327181] devm_spi_register_controller+0x4c/0xa4 [ 1.332289] nxp_fspi_probe+0x1cc/0x2b0 [ 1.336307] platform_probe+0x68/0xc4 [ 1.340145] really_probe+0xbc/0x29c [ 1.343893] __driver_probe_device+0x78/0x12c [ 1.348457] driver_probe_device+0xd8/0x15c [ 1.352838] __driver_attach+0x90/0x19c [ 1.356857] bus_for_each_dev+0x7c/0xdc [ 1.360877] driver_attach+0x24/0x30 [ 1.364624] bus_add_driver+0xe4/0x208 [ 1.368552] driver_register+0x5c/0x124 [ 1.372573] __platform_driver_register+0x28/0x34 [ 1.377497] nxp_fspi_driver_init+0x1c/0x28 [ 1.381888] do_one_initcall+0x80/0x1c8 [ 1.385908] kernel_init_freeable+0x1c4/0x28c [ 1.390472] kernel_init+0x20/0x1d8 [ 1.394138] ret_from_fork+0x10/0x20 [ 1.397885] ---[ end trace 0000000000000000 ]--- [ 1.407908] ------------[ cut here ]------------ Fixes: ef89fd5 ("arm64: dts: imx8ulp: add flexspi node") Cc: stable@kernel.org Signed-off-by: Haibo Chen <haibo.chen@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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