From: Yafang Shao <laoar.shao@gmail.com>
To: keescook@chromium.org, rostedt@goodmis.org,
mathieu.desnoyers@efficios.com, arnaldo.melo@gmail.com,
pmladek@suse.com, peterz@infradead.org, viro@zeniv.linux.org.uk,
akpm@linux-foundation.org, valentin.schneider@arm.com,
qiang.zhang@windriver.com, robdclark@chromium.org,
christian@brauner.io, dietmar.eggemann@arm.com, mingo@redhat.com,
juri.lelli@redhat.com, vincent.guittot@linaro.org,
davem@davemloft.net, kuba@kernel.org, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, kafai@fb.com,
songliubraving@fb.com, yhs@fb.com, john.fastabend@gmail.com,
kpsingh@kernel.org
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, oliver.sang@intel.com,
lkp@intel.com, Yafang Shao <laoar.shao@gmail.com>
Subject: [PATCH v5 05/15] drivers/infiniband: make setup_ctxt always get a nul terminated task comm
Date: Thu, 21 Oct 2021 03:45:12 +0000 [thread overview]
Message-ID: <20211021034516.4400-6-laoar.shao@gmail.com> (raw)
In-Reply-To: <20211021034516.4400-1-laoar.shao@gmail.com>
Use TASK_COMM_LEN_16 instead of hard-coded 16 to make it more grepable,
and use strscpy_pad() instead of strlcpy() to make the comm always nul
terminated.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Petr Mladek <pmladek@suse.com>
---
drivers/infiniband/hw/qib/qib.h | 4 ++--
drivers/infiniband/hw/qib/qib_file_ops.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index 9363bccfc6e7..8e59f9cbabc8 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -195,8 +195,8 @@ struct qib_ctxtdata {
/* pid of process using this ctxt */
pid_t pid;
pid_t subpid[QLOGIC_IB_MAX_SUBCTXT];
- /* same size as task_struct .comm[], command that opened context */
- char comm[16];
+ /* task_struct .comm[], command that opened context */
+ char comm[TASK_COMM_LEN_16];
/* pkeys set by this use of this ctxt */
u16 pkeys[4];
/* so file ops can get at unit */
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index 63854f4b6524..7ab2b448c183 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -1321,7 +1321,7 @@ static int setup_ctxt(struct qib_pportdata *ppd, int ctxt,
rcd->tid_pg_list = ptmp;
rcd->pid = current->pid;
init_waitqueue_head(&dd->rcd[ctxt]->wait);
- strlcpy(rcd->comm, current->comm, sizeof(rcd->comm));
+ strscpy_pad(rcd->comm, current->comm, sizeof(rcd->comm));
ctxt_fp(fp) = rcd;
qib_stats.sps_ctxts++;
dd->freectxts--;
--
2.17.1
next prev parent reply other threads:[~2021-10-21 3:45 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 3:45 [PATCH v5 00/15] extend task comm from 16 to 24 for CONFIG_BASE_FULL Yafang Shao
2021-10-21 3:45 ` [PATCH v5 01/15] fs/exec: make __set_task_comm always set a nul ternimated string Yafang Shao
2021-10-21 3:45 ` [PATCH v5 02/15] fs/exec: make __get_task_comm always get a nul terminated string Yafang Shao
2021-10-21 3:45 ` [PATCH v5 03/15] sched.h: introduce TASK_COMM_LEN_16 Yafang Shao
2021-10-21 21:55 ` Andrii Nakryiko
2021-10-22 6:23 ` Yafang Shao
2021-10-21 3:45 ` [PATCH v5 04/15] cn_proc: make connector comm always nul ternimated Yafang Shao
2021-10-21 3:45 ` Yafang Shao [this message]
2021-10-21 3:45 ` [PATCH v5 06/15] elfcore: make prpsinfo always get a nul terminated task comm Yafang Shao
2021-10-21 3:45 ` [PATCH v5 07/15] samples/bpf/kern: use TASK_COMM_LEN instead of hard-coded 16 Yafang Shao
2021-10-21 3:45 ` [PATCH v5 08/15] samples/bpf/user: use TASK_COMM_LEN_16 " Yafang Shao
2021-10-21 3:45 ` [PATCH v5 09/15] tools/include: introduce TASK_COMM_LEN_16 Yafang Shao
2021-10-22 3:52 ` [PATCH v5 00/15] extend task comm from 16 to 24 for CONFIG_BASE_FULL Andrew Morton
2021-10-22 4:00 ` Kees Cook
2021-10-22 6:20 ` Yafang Shao
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