Hongfu Li e32e6f0216 selftests/cgroup: Fix cg_read_strcmp() empty string comparison ...

cg_read_strcmp() allocated a buffer sized to strlen(expected) + 1,
then passed it to read_text() which calls read(fd, buf, size-1).

When comparing against an empty string (""), strlen("") = 0 gives a
1-byte buffer, and read() is asked to read 0 bytes.  The file content
is never actually read, so strcmp("", buf) always returns 0 regardless
of the real content.  This caused cg_test_proc_killed() to always
report the cgroup as empty immediately, making OOM tests pass without
verifying that processes were killed.

Signed-off-by: Hongfu Li <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>

2026-05-10 15:53:44 -10:00

..

include

selftests/cgroup: Don't require synchronous populated update on task exit

2026-03-24 10:21:57 -10:00

cgroup_util.c

selftests/cgroup: Fix cg_read_strcmp() empty string comparison

2026-05-10 15:53:44 -10:00

libcgroup.mk

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