* fs/io_uring.c:5999:2: warning: Redundant assignment of 'req' to itself. [selfAssignment]
@ 2022-02-16 11:24 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-02-16 11:24 UTC (permalink / raw)
To: Pavel Begunkov; +Cc: kbuild-all, linux-kernel, Jens Axboe
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c5d9ae265b105d9a67575fb67bd4650a6fc08e25
commit: a3dbdf54da80326fd12bc11ad75ecd699a82374f io_uring: refactor io_get_sequence()
date: 8 months ago
compiler: powerpc64-linux-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
cppcheck warnings: (new ones prefixed by >>)
>> kernel/irq/proc.c:357:2: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint]
sprintf(name, "%d", irq);
^
>> fs/io_uring.c:5999:2: warning: Redundant assignment of 'req' to itself. [selfAssignment]
io_for_each_link(req, req)
^
cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
>> kernel/irq/proc.c:357:2: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint]
sprintf(name, "%d", irq);
^
>> fs/io_uring.c:5305:19: warning: Uninitialized variable: req [uninitvar]
if (sqe_addr != req->user_data)
^
fs/io_uring.c:5309:10: warning: Uninitialized variable: req [uninitvar]
return req;
^
fs/io_uring.c:9491:46: warning: Uninitialized variable: req [uninitvar]
seq_printf(m, " op=%d, task_works=%dn", req->opcode,
^
fs/io_uring.c:9492:6: warning: Uninitialized variable: req [uninitvar]
req->task->task_works != NULL);
^
vim +/req +5999 fs/io_uring.c
5993
5994 static u32 io_get_sequence(struct io_kiocb *req)
5995 {
5996 u32 seq = req->ctx->cached_sq_head;
5997
5998 /* need original cached_sq_head, but it was increased for each req */
> 5999 io_for_each_link(req, req)
6000 seq--;
6001 return seq;
6002 }
6003
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
^ permalink raw reply [flat|nested] 2+ messages in thread
* fs/io_uring.c:5999:2: warning: Redundant assignment of 'req' to itself. [selfAssignment]
@ 2022-02-16 11:24 ` kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-02-16 11:24 UTC (permalink / raw)
To: kbuild-all
[-- Attachment #1: Type: text/plain, Size: 2056 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c5d9ae265b105d9a67575fb67bd4650a6fc08e25
commit: a3dbdf54da80326fd12bc11ad75ecd699a82374f io_uring: refactor io_get_sequence()
date: 8 months ago
compiler: powerpc64-linux-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
cppcheck warnings: (new ones prefixed by >>)
>> kernel/irq/proc.c:357:2: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint]
sprintf(name, "%d", irq);
^
>> fs/io_uring.c:5999:2: warning: Redundant assignment of 'req' to itself. [selfAssignment]
io_for_each_link(req, req)
^
cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
>> kernel/irq/proc.c:357:2: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint]
sprintf(name, "%d", irq);
^
>> fs/io_uring.c:5305:19: warning: Uninitialized variable: req [uninitvar]
if (sqe_addr != req->user_data)
^
fs/io_uring.c:5309:10: warning: Uninitialized variable: req [uninitvar]
return req;
^
fs/io_uring.c:9491:46: warning: Uninitialized variable: req [uninitvar]
seq_printf(m, " op=%d, task_works=%dn", req->opcode,
^
fs/io_uring.c:9492:6: warning: Uninitialized variable: req [uninitvar]
req->task->task_works != NULL);
^
vim +/req +5999 fs/io_uring.c
5993
5994 static u32 io_get_sequence(struct io_kiocb *req)
5995 {
5996 u32 seq = req->ctx->cached_sq_head;
5997
5998 /* need original cached_sq_head, but it was increased for each req */
> 5999 io_for_each_link(req, req)
6000 seq--;
6001 return seq;
6002 }
6003
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
^ permalink raw reply [flat|nested] 2+ messages in thread
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