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tools/mm/page-types: fix ternary operator precedence in sigbus handler

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The ternary operator (?:) has lower precedence than addition (+), so the
expression `off + sigbus_addr ?  sigbus_addr - ptr : 0` was parsed as
`(off + sigbus_addr) ?  (sigbus_addr - ptr) : 0` rather than the intended
`off + (sigbus_addr ?  sigbus_addr - ptr : 0)`.  Add explicit parentheses
to ensure the correct evaluation order.

Link: https://lore.kernel.org/20260513022120.58033-3-ye.liu@linux.dev
Signed-off-by: Ye Liu <liuye@kylinos.cn>
Acked-by: SeongJae Park <sj@kernel.org>
Cc: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ye Liu 2026-05-13 10:21:17 +08:00 committed by Andrew Morton
parent 96f9fb9212
commit e696ff06db
1 changed files with 1 additions and 1 deletions
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2
tools/mm/page-types.c
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@ -1000,7 +1000,7 @@ static void walk_file_range(const char *name, int fd,
fatal("madvise failed: %s", name);
if (sigsetjmp(sigbus_jmp, 1)) {
end = off + sigbus_addr ? sigbus_addr - ptr : 0;
end = off + (sigbus_addr ? sigbus_addr - ptr : 0);
fprintf(stderr, "got sigbus at offset %lld: %s\n",
(long long)end, name);
goto got_sigbus;