CVE-2024-57977

memcg: fix soft lockup in the OOM process

State: Published
Severity: Not scored
Published: Feb 27, 2025
Updated: Oct 15, 2026
Reserved: Feb 27, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

memcg: fix soft lockup in the OOM process

A soft lockup issue was found in the product with about 56,000 tasks were in the OOM cgroup, it was traversing them when the soft lockup was triggered.

watchdog: BUG: soft lockup - CPU#2 stuck for 23s! [VM Thread:1503066] CPU: 2 PID: 1503066 Comm: VM Thread Kdump: loaded Tainted: G Hardware name: Huawei Cloud OpenStack Nova, BIOS RIP: 0010:console_unlock+0x343/0x540 RSP: 0000:ffffb751447db9a0 EFLAGS: 00000247 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 00000000ffffffff RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000247 RBP: ffffffffafc71f90 R08: 0000000000000000 R09: 0000000000000040 R10: 0000000000000080 R11: 0000000000000000 R12: ffffffffafc74bd0 R13: ffffffffaf60a220 R14: 0000000000000247 R15: 0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2fe6ad91f0 CR3: 00000004b2076003 CR4: 0000000000360ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vprintk_emit+0x193/0x280 printk+0x52/0x6e dump_task+0x114/0x130 mem_cgroup_scan_tasks+0x76/0x100 dump_header+0x1fe/0x210 oom_kill_process+0xd1/0x100 out_of_memory+0x125/0x570 mem_cgroup_out_of_memory+0xb5/0xd0 try_charge+0x720/0x770 mem_cgroup_try_charge+0x86/0x180 mem_cgroup_try_charge_delay+0x1c/0x40 do_anonymous_page+0xb5/0x390 handle_mm_fault+0xc4/0x1f0

This is because thousands of processes are in the OOM cgroup, it takes a long time to traverse all of them. As a result, this lead to soft lockup in the OOM process.

To fix this issue, call 'cond_resched' in the 'mem_cgroup_scan_tasks' function per 1000 iterations. For global OOM, call 'touch_softlockup_watchdog' per 1000 iterations to avoid this issue.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9cbb78bb314360a860a8b23723971cb6fcb54176 to before 72f2c0b7c152c2983ed51d48c3272cab4f34d965Affected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before 110399858194c71f11afefad6e7be9e3876b284fAffected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before a9042dbc1ed4bf25a5f5c699d10c3d676abf8ca2Affected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before 0a09d56e1682c951046bf15542b3e9553046c9f6Affected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before 972486d37169fe85035e81b8c5dff21f70df1173Affected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before c3a3741db8c1202aa959c77df3a4c361612d1eb1Affected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before 46576834291869457d4772bb7df72d7c2bb3d57fAffected 9cbb78bb314360a860a8b23723971cb6fcb54176 to before ade81479c7dda1ce3eedb215c78bc615bbd04f06Affected
LinuxLinux	3.6Affected before 3.6Not affected 5.4.291 through 5.4.Not affected 5.10.235 through 5.10.Not affected 5.15.179 through 5.15.Not affected 6.1.130 through 6.1.Not affected 6.6.80 through 6.6.Not affected 6.12.13 through 6.12.Not affected 6.13.2 through 6.13.*Not affected 6.14 and laterNot affected

Product

Versions

LinuxLinux

9cbb78bb314360a860a8b23723971cb6fcb54176 to before 72f2c0b7c152c2983ed51d48c3272cab4f34d965Affected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before 110399858194c71f11afefad6e7be9e3876b284fAffected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before a9042dbc1ed4bf25a5f5c699d10c3d676abf8ca2Affected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before 0a09d56e1682c951046bf15542b3e9553046c9f6Affected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before 972486d37169fe85035e81b8c5dff21f70df1173Affected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before c3a3741db8c1202aa959c77df3a4c361612d1eb1Affected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before 46576834291869457d4772bb7df72d7c2bb3d57fAffected
9cbb78bb314360a860a8b23723971cb6fcb54176 to before ade81479c7dda1ce3eedb215c78bc615bbd04f06Affected

LinuxLinux

3.6Affected
before 3.6Not affected
5.4.291 through 5.4.*Not affected
5.10.235 through 5.10.*Not affected
5.15.179 through 5.15.*Not affected
6.1.130 through 6.1.*Not affected
6.6.80 through 6.6.*Not affected
6.12.13 through 6.12.*Not affected
6.13.2 through 6.13.*Not affected
6.14 and laterNot affected

References

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