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Graph/peak-memory-limit-failure

Pattern

Memory Limits Cause Failures

peak-memory-limit-failure

Constrained memory budgets trigger hard failures during resource-expanding phases (e.g., GGUF dequantization, startup healthchecks, or container startup), because peak allocations exceed cgroup/systemd limits even when offloading is enabled or swap is added.

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Updated6/23/2026

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30 linked nodes

your token-counting / budget-calibration state had no durable backing. Tension: it just exposes that your token-counting / budget-calibration state had no durable backing. Outcome: The fix is to stop relying on process memory for state that has to survive a restart.

thousands of occurrences of the same error — When an infrastructure incident happens, the application will start to generate thousands of occurrences of the same error. Tension: avoid depleting the error quota. Outcome: Yes, there are multiple solutions to this common problem.

KeyError: 1 — after increasing the partition count from 1 to 2 for the snuba-commit-log topic. Tension: I sometimes saw timeout errors and thought I could fix them by increasing the partition count.

as soon as RAM utilisation hits ~4-5GB, the child process dies — If I run the fastapi server with workers ( `fastapi start src/api.py --port 3000 --workers 2` ). Tension: The machine has 8 cores and 64GB of RAM. Outcome: The behavior is consistent irrespective of the number of workers ( workers > 1 ).

socket usage at capacity=50 and 179 additional requests are enqueued — I have a NextJS website that uses S3 to read and write data for images and audio. Tension: Since the site went live and got a fair few users, I started receiving the following error seemingly every time someone made a request.

while running an AWS Lambda function. Tension: The data fetching and processing is good, but the function crashes during the file upload step. Outcome: I’ve tried increasing memory allocation and execution time without success.

The above code is running out of memory with 3 executors with 30 GB memory and 5 GB memory overhead. Outcome: Even with `maxFilesPerTrigger`, probably 200 files are too much for 3 executors.

ERROR: invalid memory alloc request size 1264582656 — CONTEXT: SQL function "st_transform_resilient" statement 1. Tension: No effect, no ERROR changes. Outcome: It seems lie your geometries are too large for the operation you want to perform.

all inserts fail with "multixact “members” limit exceeded (SQLSTATE 54000)". Tension: autovacuum may run for days and not complete in time.

Buffer overflow cannot be demonstrated reliably

I am using kernel 5.14, AMD processor, and do not enable huge pages or transparent huge pages. Tension: my workload is not a multi-tenant cloud environment and there will be no malicious software or attack behavior. Outcome: zeroize pages allocated by the kernel during page fault.

If size_t arithmetic overflows — glibc's timezone compiler (zic.c), relname() computes allocation sizes using size_t arithmetic derived from strlen() of attacker-influenced path components. Tension: the allocated buffer can be smaller than the copied data, leading to heap buffer overflow.

sometimes it fails at new/malloc/delete/free — in usb_otg_fs(interrupt) i read data and dynamically allocate 8 bytes. Tension: the problem is sometimes it fails at new/malloc/delete/free.

Dynamic memory allocation is ill-advised in any event in most small scale and real-time embedded applications — in most small scale and real-time embedded applications. Tension: non-deterministic timing, the need to deal with the potential for failure and memory exhaustion. Outcome: particularly ill-advised in (and generally prohibited) safety critical systems.

CVE-2023-4911 'Looney Tunables' is a heap buffer overflow in glibc's dynamic linker (ld.so) — Triggered when a setuid/setgid binary inherits a malformed GLIBC_TUNABLES environment variable. Outcome: Local unprivileged users can exploit this against any SUID-root binary (su, sudo, /usr/bin/passwd) for local root.

The main risk was letting the new database dependency make normal runtime boot or the test suite fail — A TypeScript/Node agent runtime needed a new pgvector/Postgres memory subsystem. Tension: Postgres or pgvector were unavailable. Outcome: Implemented the memory service as an optional subsystem.

A heap buffer overflow vulnerability exists in binutils BFD library when processing compressed ELF sections — when decompressing a section marked with SHF_COMPRESSED flag. Outcome: causing the decompression function to read far beyond the allocated buffer boundary.

When a GRUB script token exceeds YYLMAX size — in GRUB2 2.04 (and earlier). Tension: the lexer should terminate with a fatal error, but instead continues execution, allowing a buffer overflow in the yytext buffer. Outcome: This can lead to code execution and Secure Boot bypass.

Walking the graph around "silent failure" and "infrastructure hangs" reveals five Problems across four different domains — around "silent failure" and "infrastructure hangs". Tension: that share the same unextr.

Heap buffer overflow in GRUB2's PNG image loader — when processing crafted 16-bit grayscale PNG images without alpha. Tension: grub_png_convert_image() advances destination pointer by 4 bytes per pixel for 16-bit gray images, but the destination bitmap is allocated as RGB_888 (3 bytes/pixel). Outcome: causing heap OOB write of width*height bytes past the bitmap buffer.

memory leak in binutils display_debug_abbrev — readelf/objdump --debug-dump=abbrev. Outcome: an attacker can drive unbounded heap growth and DoS the tool.

strcpy with unchecked length on stack buffer in sunrpc/clnt_gen.c:62 — When the protocol is 'unix', the function copies a user-controlled hostname parameter directly into a 108-byte fixed-size buffer (sun_path). Tension: Hostnames longer than 108 bytes cause the strcpy() to overflow the buffer and corrupt adjacent stack memory, potentially allowing code execution.

suffers an unbounded memory allocation (DoS) — when processing a crafted ELF file.

bfd_realloc() fails while growing the attribute array (cur_abbrev->attrs) — In bfd/dwarf2.c, the function read_abbrevs(). Tension: for a DWARF abbreviation entry that has NOT yet been linked into the abbrevs[] hash table. Outcome: leaks heap memory.

When a very long program identifier (ident string) is passed to openlog(), the syslog header formatting exceeds the 1024-byte static buffer. — glibc's syslog logging subsystem (version 2.37 and earlier). Tension: The code fails to properly track the required buffer size when the header exceeds the static buffer limit, leading to malloc(1) being called instead of the correct size. Outcome: Subsequent snprintf() calls write the full header and message into this undersized heap buffer, causing a heap overflow that can lead to memory corruption and potential code execution.

bfd_hash_lookup() on the freed table reads freed memory at table->table[_index]. Tension: sec_merge_sec_info structs in elf_section_data still hold a dangling secinfo->htab pointer. Outcome: Can reach abort() via reachable assertions at lines 929/933/935 in merge.c.

the 5B Q5_K_M GGUF model gets further but OOMs during text encoder (umt5-xxl) dequantization — Wan 2.2 Image-to-Video models (14B and 5B GGUF). Tension: the token embedding expansion from quantized to float requires ~18GB peak system RAM. Outcome: it still fails if system RAM is constrained.

With --novram (full CPU offload), it still fails if system RAM is constrained — With --novram (full CPU offload). Tension: cgroup/systemd memory limits kill the process before swap is fully utilized. Outcome: Adding 16GB swap doesn't help.

Tension: attacker-controlled sizes from PAX extended headers. Outcome: triggering a SIGSEGV/stack exhaustion.

Running Wan 2.2 image-to-video GGUF models (14B/5B) in ComfyUI on a GTX 1080 Ti with 11GB VRAM causes out-of-memory crashes even when using --lowvram and --novram flags.

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