fix: replace dead len > 2 guard with len != 2 in addSysctl#6883
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immanuwell wants to merge 1 commit into
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fix: replace dead len > 2 guard with len != 2 in addSysctl#6883immanuwell wants to merge 1 commit into
immanuwell wants to merge 1 commit into
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strings.SplitN(s, "=", 2) returns at most 2 elements, so the existing len > 2 check never fires. When a sysctl in containers.conf has no '=' the slice has length 1, and the unconditional access to splitn[1] panics. Change the guard to != 2 so a malformed sysctl returns the descriptive error instead of an index-out-of-bounds panic. Signed-off-by: Immanuel Tikhonov <pchpr.00@list.ru> Signed-off-by: immanuwell <pchpr.00@list.ru>
nalind
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May 29, 2026
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The original version was probably intended to be <, but this works, too.
LGTM, thanks!
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LGTM |
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/lgtm |
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What type of PR is this?
What this PR does / why we need it:
strings.SplitN(s, "=", 2)returns at most 2 elements, solen(splitn) > 2inaddSysctlis dead code that never fires. When a sysctl incontainers.confhas no=,splitnhas length 1 andsplitn[1]panics instead of hitting the error return right below.Changing
> 2to!= 2kills the dead code and catches the bad input.How to verify it
Before:
buildah runpanics withindex out of range [1] with length 1After: returns
sysctl "net.core.rmem_max" defined in containers.conf must be formatted name=valueWhich issue(s) this PR fixes:
None
Special notes for your reviewer:
Does this PR introduce a user-facing change?