<rcu_state+24>, subclass=subclass@entry=0, trylock=trylock@entry=0, read=read@entry=0, check=check@entry=1, nest_lock=nest_lock@entry=0x0 <fixed_percpu_data>, ip=18446744071580260235) at evl-v5.15.y/kernel/locking/lockdep.c:5677 \#100xffffffff81a9ecc5 in __raw_spin_lock_irqsave ...
[ Upstream commit 92c94df ] prep_irq_for_idle() is intended to be called before entering H_CEDE (and it is used by the pseries cpuidle driver). However the default pseries idle routine does not call it, leading to mismanaged lazy irq state when the cpuidle driver isn't in use. Ma...
lockdep state is restored correctly on exit from nmi. > - * > - * This opaque object is filled in by the irqentry_*_enter() functions and > - * must be passed back into the corresponding irqentry_*_exit() functions > - * when the exception is complete. > - * > - * Callers ...
- */ -typedef struct irqentry_state { - union { - bool exit_rcu; - bool lockdep; - }; -} irqentry_state_t; -#endif - /** * irqentry_enter - Handle state tracking on ordinary interrupt entries * @regs: Pointer to pt_regs of interrupted context diff --git a/include/linux/irqe...
@nbdd0121 has an example to demonstrate the current problem: // Assume irq is enabled here. let mut g1 = lock1.lock_irqsave(); let mut g2 = lock2.lock_irqsave(); drop(g1); // IRQ is enabled here!!! Deadlock on lock2 if lock2 is also used...
Applying: powerpc/entry: add irqentry_state and generic entry support error: patch failed: arch/powerpc/kernel/interrupt.c:3 error: arch/powerpc/kernel/interrupt.c: patch does not apply Patch failed at 0005 powerpc/entry: add irqentry_state and generic entrysupport ...
This will call the XIVE get_irqchip_state() handler which will always return true as the interrupt P bit has been set on the host side and lock the CPU in an infinite loop. Fix that by discarding disabled interrupts in get_irqchip_state(). Fixes: da15c03 ("powerpc/xive: Implement ...
>Applying: powerpc/entry: add irqentry_state and generic entry support >error: patch failed: arch/powerpc/kernel/interrupt.c:3 >error: arch/powerpc/kernel/interrupt.c: patch does not apply >Patch failed at 0005 powerpc/entry: add irqentry_state and generic entry ...
[ INFO: possible irq lock inversion dependency detected ] Although the symptom is different it is related to the same origin : fpac/4933 just changed the state of lock: (slock-AF_AX25){--..}, at: [<d8be3312>] ax25_disconnect+0x46/0xaf [ax25] ...
local_irq_disable(); - ret = interrupt_exit_user_prepare_main(ret, regs); + if (ti_flags & _TIF_RESTOREALL) + ret |= _TIF_RESTOREALL; + if (ti_flags & _TIF_SIGPENDING) + ret |= _TIF_RESTOREALL; #ifdef CONFIG_PPC64