* [axboe-block:rw_iter 79/415] kernel/time/test_udelay.c:112 udelay_test_write() warn: potential spectre issue 'lbuf' [w]
@ 2024-04-11 18:10 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-04-11 18:10 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp, Dan Carpenter
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Jens Axboe <axboe@kernel.dk>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git rw_iter
head: 4697e7b2960e76dc525f676f4729d1bf219e0ccd
commit: 99faf2122db10e555ebd87072639ca6ac8e2fb92 [79/415] kernel/time: convert to read/write iterators
:::::: branch date: 2 hours ago
:::::: commit date: 20 hours ago
config: x86_64-randconfig-161-20240411 (https://download.01.org/0day-ci/archive/20240412/202404120214.rzmLN0cI-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202404120214.rzmLN0cI-lkp@intel.com/
smatch warnings:
kernel/time/test_udelay.c:112 udelay_test_write() warn: potential spectre issue 'lbuf' [w]
vim +/lbuf +112 kernel/time/test_udelay.c
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 98
99faf2122db10e kernel/time/test_udelay.c Jens Axboe 2024-04-08 99 static ssize_t udelay_test_write(struct kiocb *iocb, struct iov_iter *from)
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 100 {
99faf2122db10e kernel/time/test_udelay.c Jens Axboe 2024-04-08 101 size_t count = iov_iter_count(from);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 102 char lbuf[32];
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 103 int ret;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 104 int usecs;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 105 int iters;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 106
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 107 if (count >= sizeof(lbuf))
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 108 return -EINVAL;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 109
99faf2122db10e kernel/time/test_udelay.c Jens Axboe 2024-04-08 110 if (!copy_from_iter_full(lbuf, count, from))
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 111 return -EFAULT;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 @112 lbuf[count] = '\0';
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 113
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 114 ret = sscanf(lbuf, "%d %d", &usecs, &iters);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 115 if (ret < 1)
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 116 return -EINVAL;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 117 else if (ret < 2)
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 118 iters = DEFAULT_ITERATIONS;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 119
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 120 mutex_lock(&udelay_test_lock);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 121 udelay_test_usecs = usecs;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 122 udelay_test_iterations = iters;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 123 mutex_unlock(&udelay_test_lock);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 124
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 125 return count;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 126 }
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 127
:::::: The code at line 112 was first introduced by commit
:::::: e704f93af5a083c07b8f722672d63a1d908daf55 kernel: time: Add udelay_test module to validate udelay
:::::: TO: David Riley <davidriley@chromium.org>
:::::: CC: John Stultz <john.stultz@linaro.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* [axboe-block:rw_iter 79/415] kernel/time/test_udelay.c:112 udelay_test_write() warn: potential spectre issue 'lbuf' [w]
@ 2024-04-12 11:19 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2024-04-12 11:19 UTC (permalink / raw)
To: oe-kbuild; +Cc: lkp, Dan Carpenter
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
TO: Jens Axboe <axboe@kernel.dk>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git rw_iter
head: 8e79f6c3d0a118031e843758491803e38794f6e8
commit: 99faf2122db10e555ebd87072639ca6ac8e2fb92 [79/415] kernel/time: convert to read/write iterators
:::::: branch date: 16 hours ago
:::::: commit date: 2 days ago
config: x86_64-randconfig-161-20240411 (https://download.01.org/0day-ci/archive/20240412/202404121955.fDJYmETD-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202404121955.fDJYmETD-lkp@intel.com/
smatch warnings:
kernel/time/test_udelay.c:112 udelay_test_write() warn: potential spectre issue 'lbuf' [w]
vim +/lbuf +112 kernel/time/test_udelay.c
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 98
99faf2122db10e kernel/time/test_udelay.c Jens Axboe 2024-04-08 99 static ssize_t udelay_test_write(struct kiocb *iocb, struct iov_iter *from)
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 100 {
99faf2122db10e kernel/time/test_udelay.c Jens Axboe 2024-04-08 101 size_t count = iov_iter_count(from);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 102 char lbuf[32];
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 103 int ret;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 104 int usecs;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 105 int iters;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 106
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 107 if (count >= sizeof(lbuf))
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 108 return -EINVAL;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 109
99faf2122db10e kernel/time/test_udelay.c Jens Axboe 2024-04-08 110 if (!copy_from_iter_full(lbuf, count, from))
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 111 return -EFAULT;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 @112 lbuf[count] = '\0';
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 113
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 114 ret = sscanf(lbuf, "%d %d", &usecs, &iters);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 115 if (ret < 1)
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 116 return -EINVAL;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 117 else if (ret < 2)
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 118 iters = DEFAULT_ITERATIONS;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 119
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 120 mutex_lock(&udelay_test_lock);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 121 udelay_test_usecs = usecs;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 122 udelay_test_iterations = iters;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 123 mutex_unlock(&udelay_test_lock);
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 124
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 125 return count;
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 126 }
e704f93af5a083 kernel/time/udelay_test.c David Riley 2014-06-16 127
:::::: The code at line 112 was first introduced by commit
:::::: e704f93af5a083c07b8f722672d63a1d908daf55 kernel: time: Add udelay_test module to validate udelay
:::::: TO: David Riley <davidriley@chromium.org>
:::::: CC: John Stultz <john.stultz@linaro.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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