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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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Brian Norris
5b65258229
irq_shutdown_and_deactivate() is normally called with the descriptor lock
held, and interrupts disabled. Nested a few levels down, it grabs the
global irq_resend_lock. Lockdep rightfully complains when interrupts are
not disabled:
CPU0 CPU1
---- ----
lock(irq_resend_lock);
local_irq_disable();
lock(&irq_desc_lock_class);
lock(irq_resend_lock);
<Interrupt>
lock(&irq_desc_lock_class);
...
_raw_spin_lock+0x2b/0x40
clear_irq_resend+0x14/0x70
irq_shutdown_and_deactivate+0x29/0x80
irq_shutdown_depth_test+0x1ce/0x600
kunit_try_run_case+0x90/0x120
Grab the descriptor lock and disable interrupts, to resolve the
problem.
Fixes: 66067c3c8a ("genirq: Add kunit tests for depth counts")
Reported-by: Guenter Roeck <[email protected]>
Signed-off-by: Brian Norris <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Tested-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/all/[email protected]
Closes: https://lore.kernel.org/lkml/[email protected]/