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a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=Wb1JkmetP80A:10 a=GoEa3M9JfhUA:10 a=yPCof4ZbAAAA:8 a=qWbYbpd6aP1NntcuhEkA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzMwMDE3OCBTYWx0ZWRfX2RYDLEWcKemb chS7DawlIyHj5oXihdjrfBaJjlFc+JSIynKvKshfe/ZQW3l9LnOH9gb6HHDxlmJFd1cL4FOQu2c nYbWpXKUsdFeTnTTmY4jWr2ST4qd2udBy4waHNOCyZpyhPjyWGmhM3k0HLAGpSwYL+Rn33lBvZ/ CoXCa9FyEAiOLY8jarWc+/d2UAn3QWOCxpE54kr8aWG24bbT2rfdR/UCNiz+DvwGoYqU7NIqBiZ v+n9vEXvcSmDIYyz+MlK/6O+0uk0mHzsiZUG655VqYW4gHzZ6NGqoiuKXa9UGy4X6WpbXUSvudY MSWvKu6/rxTIWdzDk+wEutuh6drNceda8GqaCpjjXZFoY4VaN5CQppWzmiFcEs5loCBunBPUfBG rt4JP4MWaqJeeX1JGDenjuZqlakRB4xTpw5wCKPvfbLQ7ghEGfFBQOhkqxMDPlO8dBrI5VxW X-Proofpoint-GUID: mx7IphNo48IxID-6H0A1wkmd7h_dVqCf On 7/30/25 6:32 AM, Steven Rostedt wrote: > On Tue, 29 Jul 2025 21:55:39 -0700 > Indu Bhagat wrote: > >>> diff --git a/include/linux/unwind_deferred.h b/include/linux/unwind_deferred.h >>> index a5f6e8f8a1a2..baacf4a1eb4c 100644 >>> --- a/include/linux/unwind_deferred.h >>> +++ b/include/linux/unwind_deferred.h >>> @@ -12,6 +12,12 @@ void unwind_task_free(struct task_struct *task); >>> >>> int unwind_user_faultable(struct unwind_stacktrace *trace); >>> >>> +static __always_inline void unwind_reset_info(void) >>> +{ >>> + if (unlikely(current->unwind_info.cache)) >>> + current->unwind_info.cache->nr_entries = 0; >>> +} >> >> Should the entries[] items upto nr_entries (stack trace info from the >> previous request) also be reset to 0 here ? > > This is in a critical path, there's no reason to reset to zero. The data will > just be stale. Nothing should care about anything over nr_entries. > OK. Reviewed-By: Indu Bhagat