# xTaskResumeAll lockup

**URL:** <https://forums.freertos.org/t/xtaskresumeall-lockup/15576>\
**Category:** Kernel\
**Tags:** debug\
**Created:** [August 3, 2022, 1:44am UTC](https://forums.freertos.org/t/xtaskresumeall-lockup/15576 "2022-08-03T01:44:49Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![RAc](https://d3iykfbgfh8zhg.cloudfront.net/user_avatar/forums.freertos.org/rac/32/1389_2.png) [@RAc](https://forums.freertos.org/u/RAc)\
**Post date:** [August 3, 2022, 6:00am UTC](https://forums.freertos.org/t/xtaskresumeall-lockup/15576/5 "2022-08-03T06:00:12Z")

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Check the usual suspects, ie make sure all your ISRs run below MAX\_SYSCALL priority, all isr sys call invocations (and only those) are via xxxFromISR() calls, and your startup stack is large enough to serve nested interrupts from all possible sources.

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