On Wed, 31 Aug 2022 23:10:52 +1000, Michael Ellerman wrote:
> This reverts commit ef5b570d3700fbb8628a58da0487486ceeb713cd.
>
> Zhouyi reported that commit is causing crashes when running rcutorture
> with KASAN enabled:
>
> BUG: using smp_processor_id() in preemptible [00000000] code:
> rcu_torture_rea/100
> caller is rcu_preempt_deferred_qs_irqrestore+0x74/0xed0
> CPU: 4 PID: 100 Comm: rcu_torture_rea Tainted: G W
> 5.19.0-rc5-next-20220708-dirty #253
> Call Trace:
> dump_stack_lvl+0xbc/0x108 (unreliable)
> check_preemption_disabled+0x154/0x160
> rcu_preempt_deferred_qs_irqrestore+0x74/0xed0
> __rcu_read_unlock+0x290/0x3b0
> rcu_torture_read_unlock+0x30/0xb0
> rcutorture_one_extend+0x198/0x810
> rcu_torture_one_read+0x58c/0xc90
> rcu_torture_reader+0x12c/0x360
> kthread+0x1e8/0x220
> ret_from_kernel_thread+0x5c/0x64
>
> [...]
Applied to powerpc/fixes.
[1/1] Revert "powerpc/irq: Don't open code irq_soft_mask helpers"
https://git.kernel.org/powerpc/c/684c68d92e2e1b97fa2f31c35c1b0f7671a8618a
cheers
