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linux-user/elfload: test return value of getrlimit

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Should getrlimit() fail the value of dumpsize.rlimit_cur may not be
initialized. Avoid reading garbage data by checking the return value of
getrlimit.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>
Message-Id: <20240120-qemu-user-dumpable-v3-1-6aa410c933f1@t-8ch.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Thomas Weißschuh 2024-01-20 22:45:24 +01:00 committed by Richard Henderson
parent 1b21fe27e7
commit 3805d4287f
1 changed files with 2 additions and 2 deletions
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linux-user/elfload.c
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@ -4667,9 +4667,9 @@ static int elf_core_dump(int signr, const CPUArchState *env)
init_note_info(&info); init_note_info(&info);
errno = 0; errno = 0;
getrlimit(RLIMIT_CORE, &dumpsize); if (getrlimit(RLIMIT_CORE, &dumpsize) == 0 && dumpsize.rlim_cur == 0) {
if (dumpsize.rlim_cur == 0)
return 0; return 0;
}
corefile = core_dump_filename(ts); corefile = core_dump_filename(ts);