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The disk cache code tries to allocate a 256 Kbyte buffer on the stack.
Since musl only gives 80 Kbyte of stack space per thread, this causes a trap.
--- mesa-17.3.1/src/util/disk_cache.c.old 2017-12-21 11:31:22.000000000 -0600
+++ mesa-17.3.1/src/util/disk_cache.c 2017-12-29 01:17:15.625633901 -0600
@@ -716,7 +716,7 @@
deflate_and_write_to_disk(const void *in_data, size_t in_data_size, int dest,
const char *filename)
{
- unsigned char out[BUFSIZE];
+ unsigned char *out;
/* allocate deflate state */
z_stream strm;
@@ -733,6 +733,11 @@
/* compress until end of in_data */
size_t compressed_size = 0;
int flush;
+
+ out = calloc(1, BUFSIZE);
+ if (out == NULL)
+ return 0;
+
do {
int remaining = in_data_size - BUFSIZE;
flush = remaining > 0 ? Z_NO_FLUSH : Z_FINISH;
@@ -754,6 +759,7 @@
ssize_t written = write_all(dest, out, have);
if (written == -1) {
(void)deflateEnd(&strm);
+ free(out);
return 0;
}
} while (strm.avail_out == 0);
@@ -768,6 +774,7 @@
/* clean up and return */
(void)deflateEnd(&strm);
+ free(out);
return compressed_size;
}
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