https://github.com/torvalds/linux
Revision d7f06bdd6ee87fbefa05af5f57361d85e7715b11 authored by Phil Auld on 06 September 2022, 20:35:42 UTC, committed by Greg Kroah-Hartman on 22 September 2022, 11:13:12 UTC
As PAGE_SIZE is unsigned long, -1 > PAGE_SIZE when NR_CPUS <= 3. This leads to very large file sizes: topology$ ls -l total 0 -r--r--r-- 1 root root 18446744073709551615 Sep 5 11:59 core_cpus -r--r--r-- 1 root root 4096 Sep 5 11:59 core_cpus_list -r--r--r-- 1 root root 4096 Sep 5 10:58 core_id -r--r--r-- 1 root root 18446744073709551615 Sep 5 10:10 core_siblings -r--r--r-- 1 root root 4096 Sep 5 11:59 core_siblings_list -r--r--r-- 1 root root 18446744073709551615 Sep 5 11:59 die_cpus -r--r--r-- 1 root root 4096 Sep 5 11:59 die_cpus_list -r--r--r-- 1 root root 4096 Sep 5 11:59 die_id -r--r--r-- 1 root root 18446744073709551615 Sep 5 11:59 package_cpus -r--r--r-- 1 root root 4096 Sep 5 11:59 package_cpus_list -r--r--r-- 1 root root 4096 Sep 5 10:58 physical_package_id -r--r--r-- 1 root root 18446744073709551615 Sep 5 10:10 thread_siblings -r--r--r-- 1 root root 4096 Sep 5 11:59 thread_siblings_list Adjust the inequality to catch the case when NR_CPUS is configured to a small value. Fixes: 7ee951acd31a ("drivers/base: fix userspace break from using bin_attributes for cpumap and cpulist") Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Yury Norov <yury.norov@gmail.com> Cc: stable@vger.kernel.org Cc: feng xiangjun <fengxj325@gmail.com> Reported-by: feng xiangjun <fengxj325@gmail.com> Signed-off-by: Phil Auld <pauld@redhat.com> Signed-off-by: Yury Norov <yury.norov@gmail.com> Link: https://lore.kernel.org/r/20220906203542.1796629-1-pauld@redhat.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 parent d8ab468
Tip revision: d7f06bdd6ee87fbefa05af5f57361d85e7715b11 authored by Phil Auld on 06 September 2022, 20:35:42 UTC
drivers/base: Fix unsigned comparison to -1 in CPUMAP_FILE_MAX_BYTES
drivers/base: Fix unsigned comparison to -1 in CPUMAP_FILE_MAX_BYTES
Tip revision: d7f06bd
File | Mode | Size |
---|---|---|
Kconfig | -rw-r--r-- | 5.8 KB |
Makefile | -rw-r--r-- | 986 bytes |
alarmtimer.c | -rw-r--r-- | 23.7 KB |
clockevents.c | -rw-r--r-- | 19.5 KB |
clocksource-wdtest.c | -rw-r--r-- | 5.8 KB |
clocksource.c | -rw-r--r-- | 41.3 KB |
hrtimer.c | -rw-r--r-- | 66.1 KB |
itimer.c | -rw-r--r-- | 10.2 KB |
jiffies.c | -rw-r--r-- | 2.6 KB |
namespace.c | -rw-r--r-- | 10.4 KB |
ntp.c | -rw-r--r-- | 28.3 KB |
ntp_internal.h | -rw-r--r-- | 783 bytes |
posix-clock.c | -rw-r--r-- | 5.6 KB |
posix-cpu-timers.c | -rw-r--r-- | 44.6 KB |
posix-stubs.c | -rw-r--r-- | 5.5 KB |
posix-timers.c | -rw-r--r-- | 37.4 KB |
posix-timers.h | -rw-r--r-- | 1.9 KB |
sched_clock.c | -rw-r--r-- | 7.7 KB |
test_udelay.c | -rw-r--r-- | 3.6 KB |
tick-broadcast-hrtimer.c | -rw-r--r-- | 3.2 KB |
tick-broadcast.c | -rw-r--r-- | 30.3 KB |
tick-common.c | -rw-r--r-- | 14.7 KB |
tick-internal.h | -rw-r--r-- | 7.9 KB |
tick-legacy.c | -rw-r--r-- | 999 bytes |
tick-oneshot.c | -rw-r--r-- | 3.2 KB |
tick-sched.c | -rw-r--r-- | 39.6 KB |
tick-sched.h | -rw-r--r-- | 3.5 KB |
time.c | -rw-r--r-- | 22.8 KB |
time_test.c | -rw-r--r-- | 2.0 KB |
timeconst.bc | -rw-r--r-- | 3.0 KB |
timeconv.c | -rw-r--r-- | 4.5 KB |
timecounter.c | -rw-r--r-- | 2.5 KB |
timekeeping.c | -rw-r--r-- | 71.1 KB |
timekeeping.h | -rw-r--r-- | 983 bytes |
timekeeping_debug.c | -rw-r--r-- | 1.3 KB |
timekeeping_internal.h | -rw-r--r-- | 921 bytes |
timer.c | -rw-r--r-- | 61.5 KB |
timer_list.c | -rw-r--r-- | 8.6 KB |
vsyscall.c | -rw-r--r-- | 4.9 KB |
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