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https://github.com/CVEProject/cvelist.git
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102 lines
6.2 KiB
JSON
102 lines
6.2 KiB
JSON
{
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"data_version": "4.0",
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"data_type": "CVE",
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"data_format": "MITRE",
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"CVE_data_meta": {
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"ID": "CVE-2022-48800",
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"ASSIGNER": "cve@kernel.org",
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"STATE": "PUBLIC"
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},
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm: vmscan: remove deadlock due to throttling failing to make progress\n\nA soft lockup bug in kcompactd was reported in a private bugzilla with\nthe following visible in dmesg;\n\n watchdog: BUG: soft lockup - CPU#33 stuck for 26s! [kcompactd0:479]\n watchdog: BUG: soft lockup - CPU#33 stuck for 52s! [kcompactd0:479]\n watchdog: BUG: soft lockup - CPU#33 stuck for 78s! [kcompactd0:479]\n watchdog: BUG: soft lockup - CPU#33 stuck for 104s! [kcompactd0:479]\n\nThe machine had 256G of RAM with no swap and an earlier failed\nallocation indicated that node 0 where kcompactd was run was potentially\nunreclaimable;\n\n Node 0 active_anon:29355112kB inactive_anon:2913528kB active_file:0kB\n inactive_file:0kB unevictable:64kB isolated(anon):0kB isolated(file):0kB\n mapped:8kB dirty:0kB writeback:0kB shmem:26780kB shmem_thp:\n 0kB shmem_pmdmapped: 0kB anon_thp: 23480320kB writeback_tmp:0kB\n kernel_stack:2272kB pagetables:24500kB all_unreclaimable? yes\n\nVlastimil Babka investigated a crash dump and found that a task\nmigrating pages was trying to drain PCP lists;\n\n PID: 52922 TASK: ffff969f820e5000 CPU: 19 COMMAND: \"kworker/u128:3\"\n Call Trace:\n __schedule\n schedule\n schedule_timeout\n wait_for_completion\n __flush_work\n __drain_all_pages\n __alloc_pages_slowpath.constprop.114\n __alloc_pages\n alloc_migration_target\n migrate_pages\n migrate_to_node\n do_migrate_pages\n cpuset_migrate_mm_workfn\n process_one_work\n worker_thread\n kthread\n ret_from_fork\n\nThis failure is specific to CONFIG_PREEMPT=n builds. The root of the\nproblem is that kcompact0 is not rescheduling on a CPU while a task that\nhas isolated a large number of the pages from the LRU is waiting on\nkcompact0 to reschedule so the pages can be released. While\nshrink_inactive_list() only loops once around too_many_isolated, reclaim\ncan continue without rescheduling if sc->skipped_deactivate == 1 which\ncould happen if there was no file LRU and the inactive anon list was not\nlow."
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}
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]
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "n/a"
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}
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]
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}
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]
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"vendor_name": "Linux",
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"product": {
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"product_data": [
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{
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"product_name": "Linux",
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"version": {
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"version_data": [
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{
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"version_affected": "<",
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"version_name": "d818fca1cac3",
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"version_value": "3980cff63496"
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},
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{
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"version_value": "not down converted",
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"x_cve_json_5_version_data": {
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"versions": [
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{
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"version": "5.16",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.16",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.16.10",
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"lessThanOrEqual": "5.16.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.17",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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],
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"defaultStatus": "affected"
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}
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}
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]
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}
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}
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]
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}
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}
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]
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}
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},
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"references": {
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"reference_data": [
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{
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"url": "https://git.kernel.org/stable/c/3980cff6349687f73d5109f156f23cb261c24164",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/3980cff6349687f73d5109f156f23cb261c24164"
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},
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{
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"url": "https://git.kernel.org/stable/c/b485c6f1f9f54b81443efda5f3d8a5036ba2cd91",
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"refsource": "MISC",
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"name": "https://git.kernel.org/stable/c/b485c6f1f9f54b81443efda5f3d8a5036ba2cd91"
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}
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]
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},
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"generator": {
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"engine": "bippy-9e1c9544281a"
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}
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} |