acassis closed issue #16462: [BUG] nxsem_wait_irq assertion failure
URL: https://github.com/apache/nuttx/issues/16462
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atr294 commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2960924152
@pussuw @acassis My apologies for the delay.
It took me some time to get `CONFIG_MM_KMAP` working on my Litex target due
to initial memory layout issues. After resolving those,
acassis commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2930773395
Thank you for explanation @pussuw ! Do you think this new exception that
@atr294 found while running monkey in foreground also have the same root cause?
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pussuw commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2930874955
Yes, almost certainly. The wrong user mappings are active during the
watchdog interrupt and atomic_read reads the sem counter from the wrong
physical page, getting a garbage value.
pussuw commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2929187000
Duplicate of https://github.com/apache/nuttx/issues/8917
The underlying issue is that when nxsem_wait_irq is called, the wrong
mappings might be active. In order for it to work
atr294 commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2928460730
@acassis thanks for the suggestion. I've tried the monkey test in the
foreground, and it doesn't seem to trigger the same issue.
Running `monkey -t 0x12 ` or `monkey -t 0x11` i
acassis commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2925574719
@atr294 nice test idea! Did you try to run ostest in background and the
monkey on foreground to see if the issue also happens?
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acassis commented on issue #16462:
URL: https://github.com/apache/nuttx/issues/16462#issuecomment-2925573049
@pussuw could you please take a look, it is related to your PR about
sem_waitirq
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atr294 opened a new issue, #16462:
URL: https://github.com/apache/nuttx/issues/16462
### Description / Steps to reproduce the issue
* Description:
When running a time-consuming task in the background and repeatedly entering
any rando keys in the NSH shell, a crash sometimes hap
