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commit 64dad6d0d60514498252e6071738fa1b4c12db8c
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Author: Dave Anderson <anderson@redhat.com>
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Date: Thu Nov 29 14:21:19 2018 -0500
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Fix for the "ps -s" option on ARM64 if the number of tasks exceeds
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2000. Without the patch, the command ultimately fails with a
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dump of the internal buffer allocation stats, followed by the
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message "ps: cannot allocate any more memory!".
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(anderson@redhat.com)
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diff -up crash-7.2.3/task.c.orig crash-7.2.3/task.c
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--- crash-7.2.3/task.c.orig 2018-11-29 13:54:39.108320730 -0500
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+++ crash-7.2.3/task.c 2018-11-29 13:54:48.598279086 -0500
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@@ -4133,6 +4133,10 @@ task_pointer_string(struct task_context
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readmem(tc->task + OFFSET(task_struct_thread_ksp),
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KVADDR, &bt->stkptr, sizeof(void *),
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"thread_struct ksp", FAULT_ON_ERROR);
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+ } else if (VALID_MEMBER(task_struct_thread_context_sp)) {
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+ readmem(tc->task + OFFSET(task_struct_thread_context_sp),
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+ KVADDR, &bt->stkptr, sizeof(void *),
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+ "cpu_context sp", FAULT_ON_ERROR);
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} else {
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if ((bt->stackbase = GET_STACKBASE(tc->task))) {
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bt->stacktop = GET_STACKTOP(tc->task);
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@@ -4140,6 +4144,8 @@ task_pointer_string(struct task_context
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bt->tc = tc;
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bt->flags |= BT_KSTACKP;
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back_trace(bt);
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+ if (bt->stackbuf)
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+ FREEBUF(bt->stackbuf);
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} else
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bt->stkptr = 0;
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}
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