Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mm/swapfile: add cond_resched() in get_swap_pages() The softlockup still occurs in get_swap_pages() under memory pressure. 64 CPU cores, 64GB memory, and 28 zram devices, the disksize of each zram device is 50MB with same priority as si. Use the stress-ng tool to increase memory pressure, causing the system to oom frequently. The plist_for_each_entry_safe() loops in get_swap_pages() could reach tens of thousands of times to find available space (extreme case: cond_resched() is not called in scan_swap_map_slots()). Let's add cond_resched() into get_swap_pages() when failed to find available space to avoid softlockup.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected adfab836f4908deb049a5128082719e689eed964 before 29f0349c5c76b627fe06b87d4b13fa03a6ce8e64; affected adfab836f4908deb049a5128082719e689eed964 before 387217b97e99699c34e6d95ce2b91b327fcd853e; affected adfab836f4908deb049a5128082719e689eed964 before d49c85a1913385eed46dd16a25ad0928253767f0; affected adfab836f4908deb049a5128082719e689eed964 before 30187be29052bba9203b0ae2bdd815e0bc2faaab; affected adfab836f4908deb049a5128082719e689eed964 before 5dbe1ebd56470d03b78fc31491a9e4d433106ef2; affected adfab836f4908deb049a5128082719e689eed964 before 49178d4d61e78aed8c837dfeea8a450700f196e2; affected adfab836f4908deb049a5128082719e689eed964 before 7717fc1a12f88701573f9ed897cc4f6699c661e3; affected 75b1f2d3ed3169675b69b2f68217ebb839414657; affected bcbfe6fdf8576a545fafdfe4611f59cc6b166589; affected 3.12.30 before 3.13; affected 3.14.21 before 3.15 |
| Linux / Linux | affected 3.16; unaffected 0 before 3.16; unaffected 4.14.306 through 4.14.*; unaffected 4.19.273 through 4.19.*; unaffected 5.4.232 through 5.4.*; unaffected 5.10.168 through 5.10.*; unaffected 5.15.93 through 5.15.*; unaffected 6.1.11 through 6.1.*; unaffected 6.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/29f0349c5c76b627fe06b87d4b13fa03a6ce8e64
- https://git.kernel.org/stable/c/387217b97e99699c34e6d95ce2b91b327fcd853e
- https://git.kernel.org/stable/c/d49c85a1913385eed46dd16a25ad0928253767f0
- https://git.kernel.org/stable/c/30187be29052bba9203b0ae2bdd815e0bc2faaab
- https://git.kernel.org/stable/c/5dbe1ebd56470d03b78fc31491a9e4d433106ef2
- https://git.kernel.org/stable/c/49178d4d61e78aed8c837dfeea8a450700f196e2
- https://git.kernel.org/stable/c/7717fc1a12f88701573f9ed897cc4f6699c661e3
ADP enrichment
No English description supplied.
No references supplied.