The patch titled
Subject: drivers/infiniband: replace open-coded string copy with get_task_comm
has been added to the -mm tree. Its filename is
drivers-infiniband-replace-open-coded-string-copy-with-get_task_comm.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/drivers-infiniband-replace-open-coded-string-copy-with-get_task_comm.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/drivers-infiniband-replace-open-coded-string-copy-with-get_task_comm.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Yafang Shao <laoar.shao@xxxxxxxxx>
Subject: drivers/infiniband: replace open-coded string copy with get_task_comm
We'd better use the helper get_task_comm() rather than the open-coded
strlcpy() to get task comm. As the comment above the hard-coded 16, we
can replace it with TASK_COMM_LEN.
Link: https://lkml.kernel.org/r/20211120112738.45980-4-laoar.shao@xxxxxxxxx
Signed-off-by: Yafang Shao <laoar.shao@xxxxxxxxx>
Acked-by: Dennis Dalessandro <dennis.dalessandro@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <arnaldo.melo@xxxxxxxxx>
Cc: Alexei Starovoitov <alexei.starovoitov@xxxxxxxxx>
Cc: Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx>
Cc: Michal Miroslaw <mirq-linux@xxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Petr Mladek <pmladek@xxxxxxxx>
Cc: Andrii Nakryiko <andrii@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/infiniband/hw/qib/qib.h | 2 +-
drivers/infiniband/hw/qib/qib_file_ops.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/infiniband/hw/qib/qib_file_ops.c~drivers-infiniband-replace-open-coded-string-copy-with-get_task_comm
+++ a/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -1321,7 +1321,7 @@ static int setup_ctxt(struct qib_pportda
rcd->tid_pg_list = ptmp;
rcd->pid = current->pid;
init_waitqueue_head(&dd->rcd[ctxt]->wait);
- strlcpy(rcd->comm, current->comm, sizeof(rcd->comm));
+ get_task_comm(rcd->comm, current);
ctxt_fp(fp) = rcd;
qib_stats.sps_ctxts++;
dd->freectxts--;
--- a/drivers/infiniband/hw/qib/qib.h~drivers-infiniband-replace-open-coded-string-copy-with-get_task_comm
+++ a/drivers/infiniband/hw/qib/qib.h
@@ -196,7 +196,7 @@ struct qib_ctxtdata {
pid_t pid;
pid_t subpid[QLOGIC_IB_MAX_SUBCTXT];
/* same size as task_struct .comm[], command that opened context */
- char comm[16];
+ char comm[TASK_COMM_LEN];
/* pkeys set by this use of this ctxt */
u16 pkeys[4];
/* so file ops can get at unit */
_
Patches currently in -mm which might be from laoar.shao@xxxxxxxxx are
fs-exec-replace-strlcpy-with-strscpy_pad-in-__set_task_comm.patch
fs-exec-replace-strncpy-with-strscpy_pad-in-__get_task_comm.patch
drivers-infiniband-replace-open-coded-string-copy-with-get_task_comm.patch
fs-binfmt_elf-replace-open-coded-string-copy-with-get_task_comm.patch
samples-bpf-test_overhead_kprobe_kern-replace-bpf_probe_read_kernel-with-bpf_probe_read_kernel_str-to-get-task-comm.patch
tools-bpf-bpftool-skeleton-replace-bpf_probe_read_kernel-with-bpf_probe_read_kernel_str-to-get-task-comm.patch
tools-testing-selftests-bpf-replace-open-coded-16-with-task_comm_len.patch
