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| 1 | +From b85436757996b58b805dc4d471ec1cb3c6f56781 Mon Sep 17 00:00:00 2001 |
| 2 | +From: jykanase < [email protected]> |
| 3 | +Date: Tue, 28 Jan 2025 12:11:44 +0000 |
| 4 | +Subject: [PATCH] CVE-2022-47022 |
| 5 | + |
| 6 | +Source Link: https://github.com/open-mpi/hwloc/commit/ac1f8db9a0790d2bf153711ff4cbf6101f89aace |
| 7 | +--- |
| 8 | + hwloc/topology-linux.c | 15 ++++++++++++++- |
| 9 | + 1 file changed, 14 insertions(+), 1 deletion(-) |
| 10 | + |
| 11 | +diff --git a/hwloc/topology-linux.c b/hwloc/topology-linux.c |
| 12 | +index c7b63d2..fd6745e 100644 |
| 13 | +--- a/hwloc/topology-linux.c |
| 14 | ++++ b/hwloc/topology-linux.c |
| 15 | +@@ -870,6 +870,8 @@ hwloc_linux_set_tid_cpubind(hwloc_topology_t topology __hwloc_attribute_unused, |
| 16 | + |
| 17 | + setsize = CPU_ALLOC_SIZE(last+1); |
| 18 | + plinux_set = CPU_ALLOC(last+1); |
| 19 | ++ if (!plinux_set) |
| 20 | ++ return -1; |
| 21 | + |
| 22 | + CPU_ZERO_S(setsize, plinux_set); |
| 23 | + hwloc_bitmap_foreach_begin(cpu, hwloc_set) |
| 24 | +@@ -950,7 +952,10 @@ hwloc_linux_find_kernel_nr_cpus(hwloc_topology_t topology) |
| 25 | + while (1) { |
| 26 | + cpu_set_t *set = CPU_ALLOC(nr_cpus); |
| 27 | + size_t setsize = CPU_ALLOC_SIZE(nr_cpus); |
| 28 | +- int err = sched_getaffinity(0, setsize, set); /* always works, unless setsize is too small */ |
| 29 | ++ int err; |
| 30 | ++ if (!set) |
| 31 | ++ return -1; /* caller will return an error, and we'll try again later */ |
| 32 | ++ err = sched_getaffinity(0, setsize, set); /* always works, unless setsize is too small */ |
| 33 | + CPU_FREE(set); |
| 34 | + nr_cpus = setsize * 8; /* that's the value that was actually tested */ |
| 35 | + if (!err) |
| 36 | +@@ -978,8 +983,12 @@ hwloc_linux_get_tid_cpubind(hwloc_topology_t topology __hwloc_attribute_unused, |
| 37 | + |
| 38 | + /* find the kernel nr_cpus so as to use a large enough cpu_set size */ |
| 39 | + kernel_nr_cpus = hwloc_linux_find_kernel_nr_cpus(topology); |
| 40 | ++ if (kernel_nr_cpus < 0) |
| 41 | ++ return -1; |
| 42 | + setsize = CPU_ALLOC_SIZE(kernel_nr_cpus); |
| 43 | + plinux_set = CPU_ALLOC(kernel_nr_cpus); |
| 44 | ++ if (!plinux_set) |
| 45 | ++ return -1; |
| 46 | + |
| 47 | + err = sched_getaffinity(tid, setsize, plinux_set); |
| 48 | + |
| 49 | +@@ -1333,6 +1342,8 @@ hwloc_linux_set_thread_cpubind(hwloc_topology_t topology, pthread_t tid, hwloc_c |
| 50 | + |
| 51 | + setsize = CPU_ALLOC_SIZE(last+1); |
| 52 | + plinux_set = CPU_ALLOC(last+1); |
| 53 | ++ if (!plinux_set) |
| 54 | ++ return -1; |
| 55 | + |
| 56 | + CPU_ZERO_S(setsize, plinux_set); |
| 57 | + hwloc_bitmap_foreach_begin(cpu, hwloc_set) |
| 58 | +@@ -1424,6 +1435,8 @@ hwloc_linux_get_thread_cpubind(hwloc_topology_t topology, pthread_t tid, hwloc_b |
| 59 | + |
| 60 | + setsize = CPU_ALLOC_SIZE(last+1); |
| 61 | + plinux_set = CPU_ALLOC(last+1); |
| 62 | ++ if (!plinux_set) |
| 63 | ++ return -1; |
| 64 | + |
| 65 | + err = pthread_getaffinity_np(tid, setsize, plinux_set); |
| 66 | + if (err) { |
| 67 | +-- |
| 68 | +2.45.2 |
| 69 | + |
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