Aarch64 spinlock null dereference#68
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FlareCoding merged 1 commit intopr/rtc-time-supportfrom Mar 4, 2026
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Co-authored-by: Albert Slepak <FlareCoding@users.noreply.github.com>
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) * feat(kernel): added improved time management as well as RTC support * Fix AArch64 trap stack handoff across task switches (#68) Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Albert Slepak <FlareCoding@users.noreply.github.com> * bugbot fixes --------- Co-authored-by: Cursor Agent <cursoragent@cursor.com> Co-authored-by: Albert Slepak <FlareCoding@users.noreply.github.com>
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Fix AArch64 kernel panic during
sys_proc_waitby correcting EL1 stack handling during context switches.The AArch64 trap/scheduler stack handoff was incomplete, leading to kernel stack corruption when a task yielded while in-kernel (e.g., during
sync::wait). This resulted in a null pointer dereference when the task resumed and attempted to reacquire a spinlock, as the lock's address was corrupted. The fix ensures the EL1 stack pointer (sp_el1) is properly saved and restored across context switches for all exception levels, preventing stack frame corruption.