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linux/arch/s390
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Sven Schnelle c9b12b59e2 s390/entry: fix duplicate tracking of irq nesting level 
In the current code, when exiting from idle, rcu_irq_enter() is
called twice during irq entry:

irq_entry_enter()-> rcu_irq_enter()
irq_enter() -> rcu_irq_enter()

This may lead to wrong results from rcu_is_cpu_rrupt_from_idle()
because of a wrong dynticks nmi nesting count. Fix this by only
calling irq_enter_rcu().

Cc: <stable@vger.kernel.org> # 5.12+
Reported-by: Mark Rutland <mark.rutland@arm.com>
Fixes: 56e62a7370 ("s390: convert to generic entry")
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-12-12 18:52:26 +01:00
..
appldata
boot s390/boot: simplify and fix kernel memory layout setup 2021-11-16 12:29:19 +01:00
configs s390: enable switchdev support in defconfig 2021-12-10 16:12:34 +01:00
crypto s390/archrandom: add parameter check for s390_arch_random_generate 2021-04-21 12:32:12 +02:00
hypfs s390: rename dma section to amode31 2021-08-05 14:10:53 +02:00
include s390/pci: move pseudo-MMIO to prevent MIO overlap 2021-11-29 09:48:34 +01:00
kernel s390/entry: fix duplicate tracking of irq nesting level 2021-12-12 18:52:26 +01:00
kvm KVM: s390: Cap KVM_CAP_NR_VCPUS by num_online_cpus() 2021-11-18 02:12:15 -05:00
lib s390/test_unwind: use raw opcode instead of invalid instruction 2021-11-25 13:38:31 +01:00
mm Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2021-11-10 16:15:54 -08:00
net s390: introduce nospec_uses_trampoline() 2021-10-26 15:21:29 +02:00
pci s390/pci: implement minimal PCI error recovery 2021-11-08 14:17:49 +01:00
purgatory s390: enable KCSAN 2021-07-30 17:09:23 +02:00
tools s390/disassembler: add instructions 2021-07-27 09:39:19 +02:00
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig ftrace/samples: add s390 support for ftrace direct multi sample 2021-11-18 17:50:54 +01:00
Kconfig.debug tracing: Refactor TRACE_IRQFLAGS_SUPPORT in Kconfig 2021-08-16 11:37:21 -04:00
Makefile s390/vdso: filter out -mstack-guard and -mstack-size 2021-11-16 12:29:19 +01:00