From: Jan Stancek <jstancek@redhat.com>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH] syscalls/acct02: Check read size.
Date: Wed, 30 Oct 2019 09:03:20 -0400 (EDT) [thread overview]
Message-ID: <1665612504.9724602.1572440600772.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <575273995.9684474.1572426415443.JavaMail.zimbra@redhat.com>
----- Original Message -----
>
>
> ----- Original Message -----
> >
> > OK, on s390 where it's failing it actually catches "incomplete read":
> >
> > tst_kconfig.c:62: INFO: Parsing kernel config '/proc/config.gz'
> > tst_test.c:1118: INFO: Timeout per run is 0h 05m 00s
> > tst_kconfig.c:62: INFO: Parsing kernel config '/proc/config.gz'
> > acct02.c:234: INFO: Verifying using 'struct acct_v3'
> > acct02.c:187: INFO: == entry 1 ==
> > acct02.c:147: INFO: ac_version != 3 (131)
> > acct02.c:187: INFO: == entry 2 ==
> > acct02.c:82: INFO: ac_comm != 'acct02_helper' ('acct02')
> > acct02.c:133: INFO: ac_exitcode != 32768 (0)
> > acct02.c:141: INFO: ac_ppid != 54783 (54781)
> > acct02.c:147: INFO: ac_version != 3 (131)
> > acct02.c:183: FAIL: incomplete read 0 bytes, expected 64
>
> I'm seeing similar failure:
>
> tst_kconfig.c:62: INFO: Parsing kernel config
> '/boot/config-3.10.0-1106.el7.cki.s390x'
> tst_test.c:1118: INFO: Timeout per run is 0h 05m 00s
> tst_kconfig.c:62: INFO: Parsing kernel config
> '/boot/config-3.10.0-1106.el7.cki.s390x'
> acct02.c:239: INFO: Verifying using 'struct acct_v3'
> acct02.c:192: INFO: == entry 1 ==
> acct02.c:88: INFO: ac_btime < 1572367954 (1572367953)
^^ This is 'acct02_helper', which seemingly started before 'start_time'.
ac_btime is calculated back from current time and elapsed time@fill_ac():
ac->ac_btime = get_seconds() - elapsed;
s390s are slower, so my guess is another second ticks before btime gets calculated,
and it appears to have started later.
> acct02.c:192: INFO: == entry 2 ==
> acct02.c:82: INFO: ac_comm != 'acct02_helper' ('acct02')
> acct02.c:88: INFO: ac_btime < 1572367954 (1572367953)
> acct02.c:133: INFO: ac_exitcode != 32768 (0)
> acct02.c:141: INFO: ac_ppid != 25608 (25607)
The 2nd record is filled at acct(NULL), even though process still runs:
[ 1156.025654] CPU: 0 PID: 11772 Comm: acct02_helper Tainted: G OE ------------ 3.10.0-1106.el7.s390x #1
<>
[ 1156.027105] [<00000000001dd630>] fill_ac+0x0/0x440
[ 1156.027108] ([<00000000001ddae8>] do_acct_process+0x78/0x1a0)
[ 1156.027110] [<00000000001de3ae>] acct_process+0xf6/0x140
[ 1156.027112] [<000000000014de32>] do_exit+0x752/0xa38
[ 1156.027116] [<000000000014e216>] do_group_exit+0x66/0xf8
[ 1156.027118] [<000000000014e2ea>] SyS_exit_group+0x42/0x48
[ 1157.033294] CPU: 1 PID: 11771 Comm: acct02 Tainted: G OE ------------ 3.10.0-1106.el7.s390x #1
<>
[ 1157.033384] [<00000000001dd630>] fill_ac+0x0/0x440
[ 1157.033386] ([<00000000001ddae8>] do_acct_process+0x78/0x1a0)
[ 1157.033389] [<00000000001ddcda>] acct_pin_kill+0x52/0xa8
[ 1157.033391] [<000000000034a83e>] pin_kill+0xb6/0x178
[ 1157.033395] [<00000000001ddfe8>] SyS_acct+0x2b8/0x350
next prev parent reply other threads:[~2019-10-30 13:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 9:47 [LTP] [PATCH] syscalls/acct02: Check read size Cyril Hrubis
2019-09-25 13:56 ` Petr Vorel
2019-09-25 16:14 ` Cyril Hrubis
2019-09-27 11:38 ` Cyril Hrubis
2019-09-27 12:48 ` Petr Vorel
2019-10-30 9:06 ` Jan Stancek
2019-10-30 13:03 ` Jan Stancek [this message]
2019-10-30 14:46 ` Petr Vorel
2019-10-30 17:41 ` Jan Stancek
2019-10-31 8:43 ` Li Wang
2019-10-31 8:53 ` Jan Stancek
2019-10-31 9:09 ` Petr Vorel
2019-11-01 6:03 ` Li Wang
2019-11-01 8:54 ` Jan Stancek
2019-10-31 9:06 ` Petr Vorel
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