The reading back of the timer seems relatively recent.
commit b34e243e85dde089dbb84dd6d63dc0fe95b4d504
Author: Viresh Kumar <[email protected]>
Date: Wed Jul 8 16:01:04 2020 +0530
syscalls/timer_settime01: Make sure the timer fires
This patch improves the testcase by doing multiple things:
- Make sure the timer fires and catch the signals.
- Verify the values set to the itimerspec by reading them again using
timer_gettime() syscalls.
- Reduce the timer interval, 5 seconds was way too much.
Signed-off-by: Viresh Kumar <[email protected]>
Signed-off-by: Cyril Hrubis <[email protected]>
That said, we are off by 34 nanoseconds. Not sure that is a strict
requirement to have the alarm be triggered by not more than the value
given. But this is so close, I would hardly designate it as a bug. Add
to it that this is using ABSTIME. There could be a hidden bug here, but
I would bet this is not a regression and it hardly matters much. And it
is not anyone of the two commits referred by the test.
Cascardo.
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https://bugs.launchpad.net/bugs/1898633
Title:
timer_settime01 from ubuntu_ltp_syscalls failed on bionic /aws-4.15
on c5.metal
Status in ubuntu-kernel-tests:
New
Status in linux-aws package in Ubuntu:
New
Status in linux-aws source package in Bionic:
New
Bug description:
21367. 09/25 08:38:06 DEBUG| utils:0153| [stdout] startup='Fri Sep 25
08:37:00 2020'
21368. 09/25 08:38:06 DEBUG| utils:0153| [stdout] tst_test.c:1250:
TINFO: Timeout per run is 0h 05m 00s
21369. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:85: TINFO: Testing variant: syscall with old kernel spec
21370. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:96: TINFO: Testing for general initialization:
21371. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME) passed
21372. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_MONOTONIC) passed
21373. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_PROCESS_CPUTIME_ID) passed
21374. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_THREAD_CPUTIME_ID) passed
21375. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME) passed
21376. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME_ALARM) passed
21377. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME_ALARM) passed
21378. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_TAI) passed
21379. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:96: TINFO: Testing for setting old_value:
21380. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME) passed
21381. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_MONOTONIC) passed
21382. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_PROCESS_CPUTIME_ID) passed
21383. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_THREAD_CPUTIME_ID) passed
21384. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME) passed
21385. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME_ALARM) passed
21386. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME_ALARM) passed
21387. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_TAI) passed
21388. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:96: TINFO: Testing for using periodic timer:
21389. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME) passed
21390. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_MONOTONIC) passed
21391. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_PROCESS_CPUTIME_ID) passed
21392. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_THREAD_CPUTIME_ID) passed
21393. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME) passed
21394. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME_ALARM) passed
21395. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME_ALARM) passed
21396. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_TAI) passed
21397. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:96: TINFO: Testing for using absolute time:
21398. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME) passed
21399. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:160: TFAIL: timer_gettime(CLOCK_MONOTONIC) reported bad
values (0: 50000034): SUCCESS (0)
21400. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_MONOTONIC) passed
21401. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_PROCESS_CPUTIME_ID) passed
21402. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_THREAD_CPUTIME_ID) passed
21403. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME) passed
21404. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_BOOTTIME_ALARM) passed
21405. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_REALTIME_ALARM) passed
21406. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
timer_settime01.c:170: TPASS: timer_settime(CLOCK_TAI) passed
21407. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
21408. 09/25 08:38:06 DEBUG| utils:0153| [stdout] HINT: You _MAY_ be
missing kernel fixes, see:
21409. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
21410. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f18ddc13af98
21411. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e86fea764991
21412. 09/25 08:38:06 DEBUG| utils:0153| [stdout]
21413. 09/25 08:38:06 DEBUG| utils:0153| [stdout] Summary:
21414. 09/25 08:38:06 DEBUG| utils:0153| [stdout] passed 32
21415. 09/25 08:38:06 DEBUG| utils:0153| [stdout] failed 1
21416. 09/25 08:38:06 DEBUG| utils:0153| [stdout] skipped 0
21417. 09/25 08:38:06 DEBUG| utils:0153| [stdout] warnings 0
21418. 09/25 08:38:06 DEBUG| utils:0153| [stdout] tag=timer_settime01
stime=1601023020 dur=2 exit=exited stat=1 core=no cu=202 cs=0
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