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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-27 09:33:21 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-27 09:33:21 +0200 |
commit | e947861d0ccbc765af4512a395251e6af6857600 (patch) | |
tree | e2b8d646f40016e887162bcaf53859edaae15bc9 /kernel/sched/isolation.c | |
parent | 6f1c0268a4871a80c0ec78142eeb1fe0556e898a (diff) | |
parent | 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c (diff) | |
download | lwn-e947861d0ccbc765af4512a395251e6af6857600.tar.gz lwn-e947861d0ccbc765af4512a395251e6af6857600.zip |
Merge 5.7-rc3 into tty-next
We need the tty/serial fixes in here too.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sched/isolation.c')
-rw-r--r-- | kernel/sched/isolation.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 008d6ac2342b..808244f3ddd9 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -149,6 +149,9 @@ __setup("nohz_full=", housekeeping_nohz_full_setup); static int __init housekeeping_isolcpus_setup(char *str) { unsigned int flags = 0; + bool illegal = false; + char *par; + int len; while (isalpha(*str)) { if (!strncmp(str, "nohz,", 5)) { @@ -169,8 +172,22 @@ static int __init housekeeping_isolcpus_setup(char *str) continue; } - pr_warn("isolcpus: Error, unknown flag\n"); - return 0; + /* + * Skip unknown sub-parameter and validate that it is not + * containing an invalid character. + */ + for (par = str, len = 0; *str && *str != ','; str++, len++) { + if (!isalpha(*str) && *str != '_') + illegal = true; + } + + if (illegal) { + pr_warn("isolcpus: Invalid flag %.*s\n", len, par); + return 0; + } + + pr_info("isolcpus: Skipped unknown flag %.*s\n", len, par); + str++; } /* Default behaviour for isolcpus without flags */ |