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fc3100d64f
linux/arch/s390/kernel
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Pu Hou fc3100d64f s390/perf: fix bug when creating per-thread event 
A per-thread event could not be created correctly like below:

    perf record --per-thread -e rB0000 -- sleep 1
    Error:
    The sys_perf_event_open() syscall returned with 19 (No such device) for event (rB0000).
    /bin/dmesg may provide additional information.
    No CONFIG_PERF_EVENTS=y kernel support configured?

This bug was introduced by:

    commit c311c79799
    Author: Alexey Dobriyan <adobriyan@gmail.com>
    Date:   Mon May 8 15:56:15 2017 -0700

    cpumask: make "nr_cpumask_bits" unsigned

If a per-thread event is not attached to any CPU, the cpu field
in struct perf_event is -1. The above commit converts the CPU number
to unsigned int, which result in an illegal CPU number.

Fixes: c311c79799 ("cpumask: make "nr_cpumask_bits" unsigned")
Cc: <stable@vger.kernel.org> # v4.12+
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Pu Hou <bjhoupu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2017-09-13 16:34:23 +02:00
..
vdso32 s390/mm: use new mm defines instead of magic values 2017-07-26 08:25:09 +02:00
vdso64 s390/mm: use new mm defines instead of magic values 2017-07-26 08:25:09 +02:00
.gitignore s390: add various .gitignore files. 2012-05-16 14:42:41 +02:00
als.c s390/sclp: don't add new lines to each printed string 2017-02-08 14:13:20 +01:00
asm-offsets.c s390/time: add support for the TOD clock epoch extension 2017-07-26 08:25:14 +02:00
audit.c
audit.h
base.S s390/kdump: fix nosmt kernel parameter 2015-06-25 09:39:26 +02:00
cache.c s390/cpuinfo: show dynamic and static cpu mhz 2016-06-13 15:58:17 +02:00
compat_audit.c
compat_linux.c s390: kernel: Audit and remove any unnecessary uses of module.h 2017-02-17 07:40:31 +01:00
compat_linux.h s390: add support for vector extension 2014-10-09 09:14:13 +02:00
compat_ptrace.h
compat_signal.c signal: Remove kernel interal si_code magic 2017-07-24 14:30:28 -05:00
compat_wrapper.c s390: add a system call for guarded storage 2017-03-22 08:14:25 +01:00
cpcmd.c s390/cpcmd,vmcp: avoid GFP_DMA allocations 2017-08-09 09:09:35 -04:00
crash_dump.c s390/kdump: Add final note 2017-03-28 16:54:31 +02:00
debug.c s390/time: add support for the TOD clock epoch extension 2017-07-26 08:25:14 +02:00
diag.c s390/diag: add diag26c support 2017-06-20 15:44:15 -04:00
dis.c s390: kernel: Audit and remove any unnecessary uses of module.h 2017-02-17 07:40:31 +01:00
dumpstack.c s390/mm: use new mm defines instead of magic values 2017-07-26 08:25:09 +02:00
early_printk.c s390/sclp: make early sclp code readable 2017-02-08 14:13:19 +01:00
early.c s390: fix 'novx' early parameter handling 2017-08-23 13:31:47 +02:00
ebcdic.c s390: kernel: Audit and remove any unnecessary uses of module.h 2017-02-17 07:40:31 +01:00
entry.h s390: add a system call for guarded storage 2017-03-22 08:14:25 +01:00
entry.S s390,kvm: provide plumbing for machines checks when running guests 2017-06-28 12:57:47 +02:00
fpu.c s390/fpu: improve kernel_fpu_[begin|end] 2016-08-29 11:05:01 +02:00
ftrace.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-05-16 09:24:44 -07:00
guarded_storage.c s390: add a system call for guarded storage 2017-03-22 08:14:25 +01:00
head64.S s390/time: add support for the TOD clock epoch extension 2017-07-26 08:25:14 +02:00
head_kdump.S s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
head.S s390/time: add support for the TOD clock epoch extension 2017-07-26 08:25:14 +02:00
idle.c sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h> 2017-03-02 08:42:39 +01:00
ipl.c s390/ipl: revert Load Normal semantics for LPAR CCW-type re-IPL 2017-06-14 15:35:31 +02:00
irq.c s390/time: add support for the TOD clock epoch extension 2017-07-26 08:25:14 +02:00
jump_label.c s390: Prevent hotplug rwsem recursion 2017-05-26 10:10:46 +02:00
kdebugfs.c s390/debugfs: introduce top-level 's390' directory 2017-03-22 08:29:15 +01:00
kprobes.c s390: Prevent hotplug rwsem recursion 2017-05-26 10:10:46 +02:00
lgr.c s390: kernel: make lgr explicitly non-modular 2016-10-31 17:55:42 +01:00
machine_kexec.c kexec: move vmcoreinfo out of the kernel's .bss section 2017-07-12 16:25:59 -07:00
Makefile s390/debugfs: introduce top-level 's390' directory 2017-03-22 08:29:15 +01:00
mcount.S s390: move exports to definitions 2016-08-07 23:47:20 -04:00
module.c s390: add no-execute support 2017-02-08 14:13:25 +01:00
nmi.c KVM: s390: Backup the guest's machine check info 2017-06-27 16:05:38 +02:00
os_info.c s390: proper type casts for csum_partial invocations 2017-01-16 07:27:53 +01:00
perf_cpum_cf_events.c s390/cpum_cf: correct variable naming (cleanup) 2017-03-31 07:53:33 +02:00
perf_cpum_cf.c s390/cpum_cf: make hw_perf_event_update() a void function 2017-03-31 07:53:35 +02:00
perf_cpum_sf.c s390/perf: fix bug when creating per-thread event 2017-09-13 16:34:23 +02:00
perf_event.c s390/perf: fix null string in perf list pmu command 2017-06-12 16:26:00 +02:00
pgm_check.S s390: remove 31 bit support 2015-03-25 11:49:33 +01:00
process.c arch: remove unused macro/function thread_saved_pc() 2017-06-28 16:13:57 -07:00
processor.c s390/cpuinfo: show facilities as reported by stfle 2017-03-22 08:29:02 +01:00
ptrace.c s390/ptrace: guarded storage regset for the current task 2017-06-12 16:25:59 +02:00
reipl.S s390/dump: rework CPU register dump code 2015-11-27 09:24:14 +01:00
relocate_kernel.S s390/mm: use new mm defines instead of magic values 2017-07-26 08:25:09 +02:00
runtime_instr.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
setup.c s390/vmcp: make use of contiguous memory allocator 2017-08-09 09:09:35 -04:00
signal.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
smp.c s390/smp: convert cpuhp_setup_state() return code to zero on success 2017-08-23 13:31:49 +02:00
stacktrace.c sched/headers: Prepare for new header dependencies before moving code to <linux/sched/debug.h> 2017-03-02 08:42:34 +01:00
suspend.c s390/mm: tag normal pages vs pages used in page tables 2017-07-25 06:55:28 +02:00
swsusp.S s390/sclp: don't add new lines to each printed string 2017-02-08 14:13:20 +01:00
sys_s390.c Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
syscalls.S s390: add a system call for guarded storage 2017-03-22 08:14:25 +01:00
sysinfo.c S390/sysinfo: use uuid_is_null instead of opencoding it 2017-06-05 16:59:06 +02:00
time.c s390/dasd: Change unsigned long long to unsigned long 2017-08-23 13:31:51 +02:00
topology.c s390/sysinfo,topology: provide raw stsi 15,1,x data via debugfs 2017-03-22 08:29:15 +01:00
trace.c s390/diag: avoid lockdep recursion 2016-02-11 13:05:56 +01:00
traps.c s390: add missing header includes for type checking 2017-06-12 16:25:55 +02:00
uprobes.c s390: rename struct psw_bits members 2017-06-12 16:26:02 +02:00
vdso.c s390/mm: tag normal pages vs pages used in page tables 2017-07-25 06:55:28 +02:00
vmlinux.lds.S s390: move _text symbol to address higher than zero 2017-05-09 10:44:38 +02:00
vtime.c s390/cputime: simplify account_system_index_scaled 2017-06-12 16:25:57 +02:00