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[Bug runtime/18460] tracepoint_onthefly.exp kernel crash


https://sourceware.org/bugzilla/show_bug.cgi?id=18460

--- Comment #1 from Martin Cermak <mcermak at redhat dot com> ---
Similarly with the le variant. Console log:

=======
ibm-p8-02-lp5 login: [ 8974.587583] stap_987159ae59b6ed78cce563f4494bef79_6005:
module verification failed: signature and/or required key missing - tainting
kernel
[ 9110.631939] INFO: rcu_sched detected stalls on CPUs/tasks: { 0 1 3 4 5 6 7 8
9 10 11 13 14 15} (detected by 12, t=6002 jiffies, g=14427, c=14426, q=0)
[ 9110.632023] Task dump for CPU 0:
[ 9110.632031] swapper/0       R  running task        0     0      0 0x00000004
[ 9110.632046] Call Trace:
[ 9110.632059] [c0000000010ab9c0] [c0000000010abcc0]
init_thread_union+0x3cc0/0x4000 (unreliable)
[ 9110.632074] Task dump for CPU 1:
[ 9110.632081] swapper/1       R  running task        0     0      1 0x00000800
[ 9110.632095] Call Trace:
[ 9110.632105] [c0000004755afa00] [c0000004755afa40] 0xc0000004755afa40
(unreliable)
[ 9110.632118] Task dump for CPU 3:
[ 9110.632125] swapper/3       R  running task        0     0      1 0x00000804
[ 9110.632139] Call Trace:
[ 9110.632147] [c0000004755b7a00] [c0000004755b7a40] 0xc0000004755b7a40
(unreliable)
[ 9110.632161] Task dump for CPU 4:
[ 9110.632168] swapper/4       R  running task        0     0      1 0x00000800
[ 9110.632181] Call Trace:
[ 9110.632190] [c0000004755bba00] [c0000004755bba40] 0xc0000004755bba40
(unreliable)
[ 9110.632203] Task dump for CPU 5:
[ 9110.632210] swapper/5       R  running task        0     0      1 0x00000800
[ 9110.632223] Call Trace:
[ 9110.632231] [c0000004755bfa00] [c0000004755bfa40] 0xc0000004755bfa40
(unreliable)
[ 9110.632244] Task dump for CPU 6:
[ 9110.632251] swapper/6       R  running task        0     0      1 0x00000800
[ 9110.632265] Call Trace:
[ 9110.632273] [c0000004755c3a00] [c0000004755c3a40] 0xc0000004755c3a40
(unreliable)
[ 9110.632286] Task dump for CPU 7:
[ 9110.632294] swapper/7       R  running task        0     0      1 0x00000800
[ 9110.632307] Call Trace:
[ 9110.632315] [c0000004755c7a00] [c0000004755c7a40] 0xc0000004755c7a40
(unreliable)
[ 9110.632328] Task dump for CPU 8:
[ 9110.632335] swapper/8       R  running task        0     0      1 0x00000800
[ 9110.632348] Call Trace:
[ 9110.632356] [c0000004755cba00] [c0000004755cba40] 0xc0000004755cba40
(unreliable)
[ 9110.632370] Task dump for CPU 9:
[ 9110.632376] swapper/9       R  running task        0     0      1 0x00000804
[ 9110.632390] Call Trace:
[ 9110.632398] [c0000004755cfa00] [c0000004755cfa40] 0xc0000004755cfa40
(unreliable)
[ 9110.632411] Task dump for CPU 10:
[ 9110.632418] swapper/10      R  running task        0     0      1 0x00000808
[ 9110.632432] Call Trace:
[ 9110.632440] [c0000004755d3a00] [c0000004755d3a40] 0xc0000004755d3a40
(unreliable)
[ 9110.632453] Task dump for CPU 11:
[ 9110.632460] swapper/11      R  running task        0     0      1 0x00000800
[ 9110.632473] Call Trace:
[ 9110.632482] [c0000004755d7a00] [c0000004755d7a40] 0xc0000004755d7a40
(unreliable)
[ 9110.632495] Task dump for CPU 13:
[ 9110.632502] stapio          R  running task        0 148680 147101
0x00048080
[ 9110.632515] Call Trace:
[ 9110.632526] [c000000419577620] [c000000000c7ab00] runqueues+0x0/0xa80
(unreliable)
[ 9110.632543] [c0000004195777f0] [c000000000058bbc] hash_page+0x6ec/0x780
[ 9110.632558] [c0000004195778d0] [c00000000000954c] do_hash_page+0x4c/0x58
[ 9110.632663] --- Exception: 301 at _stp_runtime_entryfn_get_context+0x28/0x60
[stap_7237c4e9d18d6bbb2bba7683d3407101_148680]
[ 9110.632663]     LR = enter_real_tracepoint_probe_248+0x74/0x260
[stap_7237c4e9d18d6bbb2bba7683d3407101_148680]
[ 9110.632734] [c000000419577bc0] [d00000000f461360]
_stp_hrtimer_start+0xb0/0x130 [stap_7237c4e9d18d6bbb2bba7683d3407101_148680]
(unreliable)
[ 9110.632797] [c000000419577c50] [d00000000f44b788]
enter_tracepoint_probe_248+0x18/0x30
[stap_7237c4e9d18d6bbb2bba7683d3407101_148680]
[ 9110.632816] [c000000419577c70] [c0000000000fe764] hrtimer_init+0x114/0x130
[ 9110.632875] [c000000419577cb0] [d00000000f4656a4]
_stp_ctl_write_cmd+0xa74/0xb80 [stap_7237c4e9d18d6bbb2bba7683d3407101_148680]
[ 9110.632894] [c000000419577dd0] [c0000000002d5f98] SyS_write+0x148/0x390
[ 9110.632908] [c000000419577e30] [c00000000000a0fc] syscall_exit+0x0/0x7c
[ 9110.632919] Task dump for CPU 14:
[ 9110.632926] swapper/14      R  running task        0     0      1 0x00000804
[ 9110.632940] Call Trace:
[ 9110.632948] [c0000004755e3a00] [c0000004755e3a40] 0xc0000004755e3a40
(unreliable)
[ 9110.632961] Task dump for CPU 15:
[ 9110.632968] swapper/15      R  running task        0     0      1 0x00000800
[ 9110.632981] Call Trace:
[ 9110.632989] [c0000004755e7a00] [c0000004755e7a40] 0xc0000004755e7a40
(unreliable)

=======

systemtap.log:

=======
Test Run By root on Thu May 28 06:07:19 2015
Native configuration is powerpc64le-unknown-linux-gnu

                === systemtap tests ===

Schedule of variations:
    unix

Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using ./config/unix.exp as tool-and-target-specific interface file.

Host: Linux ibm-p8-02-lp5.rhts.eng.bos.redhat.com 3.10.0-229.ael7b.ppc64le #1
SMP Fri Jan 30 12:03:50 EST 2015 ppc64le ppc64le ppc64le GNU/Linux
Snapshot: version 2.8/0.160, commit release-2.7-157-g35bd6e1548e9 + changes
GCC: 4.8.3 [gcc (GCC) 4.8.3 20140911 (Red Hat 4.8.3-9)]
Distro: Red Hat Enterprise Linux Server release 7.1 Beta (Maipo)
SElinux: Disabled


Running ./systemtap.onthefly/tracepoint_onthefly.exp ...
Executing: kill -INT 3693
Executing: kill -KILL 3693
expected more patterns
got to pattern index -1, but there are 1 patterns
KFAIL: tracepoint_onthefly - otf_finish_at_start_disabled (invalid output)
(PRMS: 17256)
Executing: kill -INT 11058
Executing: kill -KILL 11058
PASS: tracepoint_onthefly - otf_finish_at_start_enabled (valid output)
Executing: kill -INT 17432
Executing: kill -KILL 17432
kill: kill: sending signal to 17432 failed: No such process
expected: * not registering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_disabled_iter_1 (invalid output) (PRMS:
17256)
Executing: kill -INT 23004
Executing: kill -KILL 23004
expected more patterns
got to pattern index 1, but there are 3 patterns
KFAIL: tracepoint_onthefly - otf_start_enabled_iter_1 (invalid output) (PRMS:
17256)
Executing: kill -INT 30452
Executing: kill -KILL 30452
expected: * not registering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_disabled_iter_2 (invalid output) (PRMS:
17256)
Executing: kill -INT 38761
Executing: kill -KILL 38761
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_enabled_iter_2 (invalid output) (PRMS:
17256)
Executing: kill -INT 47078
Executing: kill -KILL 47078
kill: kill: sending signal to 47078 failed: No such process
expected: * not registering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_disabled_iter_3 (invalid output) (PRMS:
17256)
Executing: kill -INT 54751
Executing: kill -KILL 54751
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_enabled_iter_3 (invalid output) (PRMS:
17256)
Executing: kill -INT 64813
Executing: kill -KILL 64813
expected: * not registering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_disabled_iter_4 (invalid output) (PRMS:
17256)
Executing: kill -INT 75327
Executing: kill -KILL 75327
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_enabled_iter_4 (invalid output) (PRMS:
17256)
Executing: kill -INT 85709
Executing: kill -KILL 85709
kill: kill: sending signal to 85709 failed: No such process
expected: * not registering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_disabled_iter_5 (invalid output) (PRMS:
17256)
Executing: kill -INT 95434
Executing: kill -KILL 95434
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_start_enabled_iter_5 (invalid output) (PRMS:
17256)
Executing: kill -INT 106693
Executing: kill -KILL 106693
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_timer_100ms (invalid output) (PRMS: 17256)
Executing: kill -INT 113089
Executing: kill -KILL 113089
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_timer_50ms (invalid output) (PRMS: 17256)
Executing: kill -INT 119006
Executing: kill -KILL 119006
expected: * unregistering (tracepoint) pidx ?
received: toggling
KFAIL: tracepoint_onthefly - otf_timer_10ms (invalid output) (PRMS: 17256)
Executing: kill -INT 124865
Executing: kill -KILL 124865
PASS: tracepoint_onthefly - otf_stress_5ms_iter_50 (survived)
Executing: kill -INT 130709
Executing: kill -KILL 130709
kill: kill: sending signal to 130709 failed: No such process
PASS: tracepoint_onthefly - otf_stress_1ms_iter_50 (survived)
Executing: kill -INT 134369
Executing: kill -KILL 134369
kill: kill: sending signal to 134369 failed: No such process
PASS: tracepoint_onthefly - otf_stress_500us_iter_50 (survived)
Executing: kill -INT 137785
Executing: kill -KILL 137785
kill: kill: sending signal to 137785 failed: No such process
PASS: tracepoint_onthefly - otf_stress_100us_iter_50 (survived)
Executing: kill -INT 141474
Executing: kill -KILL 141474
PASS: tracepoint_onthefly - otf_stress_prof_iter_2000 (survived)
=======

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