From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: Re: [PATCH v2 1/1] usb: gadget: f_fs: Support zerocopy transfers via mmap.
Date: Sun, 13 Feb 2022 02:17:19 +0800 [thread overview]
Message-ID: <202202122302.z3tLgceb-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 23257 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
In-Reply-To: <20220202172056.44722-2-ingo.rohloff@lauterbach.com>
References: <20220202172056.44722-2-ingo.rohloff@lauterbach.com>
TO: Ingo Rohloff <ingo.rohloff@lauterbach.com>
TO: gregkh(a)linuxfoundation.org
TO: balbi(a)kernel.org
CC: linux-usb(a)vger.kernel.org
CC: Ingo Rohloff <ingo.rohloff@lauterbach.com>
Hi Ingo,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on usb/usb-testing]
[also build test WARNING on v5.17-rc3 next-20220211]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Ingo-Rohloff/Zerocopy-for-USB-Gadget-FunctionFS/20220203-012919
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
:::::: branch date: 10 days ago
:::::: commit date: 10 days ago
config: riscv-randconfig-c006-20220205 (https://download.01.org/0day-ci/archive/20220212/202202122302.z3tLgceb-lkp(a)intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project dee058c670593b999fec19c458dbbd882ad9de56)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/0day-ci/linux/commit/dee77498ca5c303beb5ef64b95072fea55d6267f
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Ingo-Rohloff/Zerocopy-for-USB-Gadget-FunctionFS/20220203-012919
git checkout dee77498ca5c303beb5ef64b95072fea55d6267f
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
11 warnings generated.
drivers/w1/w1.c:997:2: warning: Value stored to 'search_bit' is never read [clang-analyzer-deadcode.DeadStores]
search_bit = 0;
^ ~
drivers/w1/w1.c:997:2: note: Value stored to 'search_bit' is never read
search_bit = 0;
^ ~
drivers/w1/w1.c:999:2: warning: Value stored to 'last_rn' is never read [clang-analyzer-deadcode.DeadStores]
last_rn = 0;
^ ~
drivers/w1/w1.c:999:2: note: Value stored to 'last_rn' is never read
last_rn = 0;
^ ~
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
2 warnings generated.
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
6 warnings generated.
drivers/w1/slaves/w1_therm.c:159:8: warning: Excessive padding in 'struct w1_therm_family_converter' (12 padding bytes, where 4 is optimal).
Optimal fields order:
f,
convert,
get_conversion_time,
set_resolution,
get_resolution,
write_data,
reserved,
broken,
bulk_read,
consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct w1_therm_family_converter {
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:159:8: note: Excessive padding in 'struct w1_therm_family_converter' (12 padding bytes, where 4 is optimal). Optimal fields order: f, convert, get_conversion_time, set_resolution, get_resolution, write_data, reserved, broken, bulk_read, consider reordering the fields or adding explicit padding members
struct w1_therm_family_converter {
~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:1252:5: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = -EIO;
^ ~~~~
drivers/w1/slaves/w1_therm.c:1252:5: note: Value stored to 'ret' is never read
ret = -EIO;
^ ~~~~
drivers/w1/slaves/w1_therm.c:1799:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(p_args, buf);
^~~~~~
drivers/w1/slaves/w1_therm.c:1799:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(p_args, buf);
^~~~~~
drivers/w1/slaves/w1_therm.c:2089:22: warning: The right operand of '==' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult]
if (sl->reg_num.id == reg_num->id)
^ ~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:2066:6: note: Assuming the condition is false
if (w1_reset_bus(sl->master))
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:2066:2: note: Taking false branch
if (w1_reset_bus(sl->master))
^
drivers/w1/slaves/w1_therm.c:2076:6: note: Assuming 'ack' is equal to W1_42_SUCCESS_CONFIRM_BYTE
if (ack != W1_42_SUCCESS_CONFIRM_BYTE)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:2076:2: note: Taking false branch
if (ack != W1_42_SUCCESS_CONFIRM_BYTE)
^
drivers/w1/slaves/w1_therm.c:2080:2: note: Loop condition is true. Entering loop body
for (i = 0; i <= 64; i++) {
^
drivers/w1/slaves/w1_therm.c:2081:7: note: Assuming the condition is false
if (w1_reset_bus(sl->master))
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:2081:3: note: Taking false branch
if (w1_reset_bus(sl->master))
^
drivers/w1/slaves/w1_therm.c:2087:7: note: Assuming field 'family' is not equal to W1_42_FINISHED_BYTE
if (reg_num->family == W1_42_FINISHED_BYTE)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/w1/slaves/w1_therm.c:2087:3: note: Taking false branch
if (reg_num->family == W1_42_FINISHED_BYTE)
^
drivers/w1/slaves/w1_therm.c:2089:22: note: The right operand of '==' is a garbage value
if (sl->reg_num.id == reg_num->id)
^ ~~~~~~~~~~~
Suppressed 2 warnings (2 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
>> drivers/usb/gadget/function/f_fs.c:866:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = 0;
^ ~
drivers/usb/gadget/function/f_fs.c:866:2: note: Value stored to 'ret' is never read
ret = 0;
^ ~
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (3 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (3 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (3 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
10 warnings generated.
Suppressed 10 warnings (3 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
11 warnings generated.
drivers/usb/gadget/function/uvc_configfs.c:2037:30: warning: Value stored to 'u' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct uvcg_uncompressed *u =
^
drivers/usb/gadget/function/uvc_configfs.c:2037:30: note: Value stored to 'u' during its initialization is never read
struct uvcg_uncompressed *u =
^
drivers/usb/gadget/function/uvc_configfs.c:2043:23: warning: Value stored to 'm' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct uvcg_mjpeg *m =
^
drivers/usb/gadget/function/uvc_configfs.c:2043:23: note: Value stored to 'm' during its initialization is never read
struct uvcg_mjpeg *m =
^
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
9 warnings generated.
Suppressed 9 warnings (2 in non-user code, 7 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
12 warnings generated.
drivers/usb/gadget/legacy/ether.c:373:20: warning: Access to field 'bound' results in a dereference of a null pointer (loaded from variable 'eem_opts') [clang-analyzer-core.NullDereference]
eem_opts->bound = true;
~~~~~~~~ ^
drivers/usb/gadget/legacy/ether.c:307:2: note: 'eem_opts' initialized to a null pointer value
struct f_eem_opts *eem_opts = NULL;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/gadget/legacy/ether.c:314:6: note: Assuming 'use_eem' is false
if (use_eem) {
^~~~~~~
drivers/usb/gadget/legacy/ether.c:314:2: note: Taking false branch
if (use_eem) {
^
drivers/usb/gadget/legacy/ether.c:327:13: note: Calling 'can_support_ecm'
} else if (can_support_ecm(gadget)) {
^~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/gadget/function/u_ether.h:268:7: note: Calling 'gadget_is_altset_supported'
if (!gadget_is_altset_supported(gadget))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/usb/gadget.h:523:9: note: Assuming field 'quirk_altset_not_supp' is 0, which participates in a condition later
return !g->quirk_altset_not_supp;
^~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/usb/gadget.h:523:2: note: Returning without writing to 'g->quirk_altset_not_supp', which participates in a condition later
return !g->quirk_altset_not_supp;
^
include/linux/usb/gadget.h:523:2: note: Returning the value 1, which participates in a condition later
return !g->quirk_altset_not_supp;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/gadget/function/u_ether.h:268:7: note: Returning from 'gadget_is_altset_supported'
if (!gadget_is_altset_supported(gadget))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/gadget/function/u_ether.h:268:2: note: Taking false branch
if (!gadget_is_altset_supported(gadget))
^
drivers/usb/gadget/function/u_ether.h:275:2: note: Returning the value 1, which participates in a condition later
return true;
^~~~~~~~~~~
drivers/usb/gadget/legacy/ether.c:327:13: note: Returning from 'can_support_ecm'
} else if (can_support_ecm(gadget)) {
^~~~~~~~~~~~~~~~~~~~~~~
drivers/usb/gadget/legacy/ether.c:327:9: note: Taking true branch
} else if (can_support_ecm(gadget)) {
^
drivers/usb/gadget/legacy/ether.c:331:7: note: Calling 'IS_ERR'
if (IS_ERR(fi_ecm))
^~~~~~~~~~~~~~
include/linux/err.h:36:9: note: Assuming the condition is false
return IS_ERR_VALUE((unsigned long)ptr);
^
include/linux/err.h:22:34: note: expanded from macro 'IS_ERR_VALUE'
#define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:48:41: note: expanded from macro 'unlikely'
# define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x)))
~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:33:34: note: expanded from macro '__branch_check__'
______r = __builtin_expect(!!(x), expect); \
vim +/ret +866 drivers/usb/gadget/function/f_fs.c
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 847
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 848 static int ffs_epfile_mmap(struct file *file, struct vm_area_struct *vma)
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 849 {
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 850 struct ffs_ep_listener *listener = file->private_data;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 851 struct ffs_memory *ffsm = NULL;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 852 size_t size = vma->vm_end - vma->vm_start;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 853 char *kmem;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 854 int rc, ret;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 855
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 856 if (!IS_ALIGNED(size, PAGE_SIZE))
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 857 return -EFAULT;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 858
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 859 rc = ffsm_increase_mmap_mem_usage(
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 860 listener->epfile->ffs,
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 861 size + sizeof(struct ffs_memory)
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 862 );
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 863 if (rc)
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 864 return -ENOMEM;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 865
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 @866 ret = 0;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 867 ffsm = kzalloc(sizeof(struct ffs_memory), GFP_KERNEL);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 868 if (!ffsm) {
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 869 ret = -ENOMEM;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 870 goto error_decrease_mem;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 871 }
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 872
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 873 kmem = kzalloc(size, GFP_USER | __GFP_NOWARN);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 874 if (!kmem) {
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 875 kfree(ffsm);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 876 ret = -ENOMEM;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 877 goto error_decrease_mem;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 878 }
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 879
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 880 rc = remap_pfn_range(
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 881 vma,
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 882 vma->vm_start,
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 883 PHYS_PFN(virt_to_phys(kmem)),
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 884 size,
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 885 vma->vm_page_prot
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 886 );
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 887 if (rc < 0) {
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 888 kfree(kmem);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 889 kfree(ffsm);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 890 ret = -EAGAIN;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 891 goto error_decrease_mem;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 892 }
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 893
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 894
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 895 INIT_LIST_HEAD(&ffsm->memlist);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 896 ffsm->listener = listener;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 897 ffsm->kmem = kmem;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 898 ffsm->vm_start = vma->vm_start;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 899 ffsm->size = size;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 900 ffsm->vma_use_count = 1;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 901
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 902 vma->vm_ops = &ffsm_vm_ops;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 903 vma->vm_private_data = ffsm;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 904
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 905 spin_lock_irq(&listener->ffsm_lock);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 906 list_add_tail(&ffsm->memlist, &listener->ffsm_list);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 907 spin_unlock_irq(&listener->ffsm_lock);
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 908 return 0;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 909
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 910 error_decrease_mem:
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 911 ffsm_decrease_mmap_mem_usage(
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 912 listener->epfile->ffs,
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 913 size + sizeof(struct ffs_memory)
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 914 );
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 915 return ret;
dee77498ca5c30 drivers/usb/gadget/function/f_fs.c Ingo Rohloff 2022-02-02 916 }
ddf8abd2599491 drivers/usb/gadget/f_fs.c Michal Nazarewicz 2010-05-05 917
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
next reply other threads:[~2022-02-12 18:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-12 18:17 kernel test robot [this message]
-- strict thread matches above, loose matches on Subject: below --
2022-02-02 17:20 [PATCH v2 0/1] Zerocopy for USB Gadget FunctionFS Ingo Rohloff
2022-02-02 17:20 ` [PATCH v2 1/1] usb: gadget: f_fs: Support zerocopy transfers via mmap Ingo Rohloff
2022-02-08 10:44 ` Greg KH
2022-02-08 11:48 ` Ingo Rohloff
2022-02-08 15:21 ` Alan Stern
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