From: Petr Vorel <pvorel@suse.cz>
To: Martin Doucha <mdoucha@suse.cz>
Cc: ltp@lists.linux.it
Subject: Re: [LTP] [PATCH] mmap_24-1: Change vm.max_map_count if needed
Date: Wed, 7 May 2025 19:53:28 +0200 [thread overview]
Message-ID: <20250507175328.GA182617@pevik> (raw)
In-Reply-To: <20250507154543.22309-1-mdoucha@suse.cz>
Hi Martin,
> If vm.max_map_count system parameter is too high, mmap24-1 may get
> killed by OOM. Set the parameter to a reasonable low value so that
> mmap() quickly fails as expected.
LGTM.
Reviewed-by: Petr Vorel <pvorel@suse.cz>
The only thing which bothers me is that writing /proc/sys/vm/max_map_count
requires root. But I'm not sure if it's worth to add more code to check UID 0.
@Li @Cyril: WDYT?
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
next prev parent reply other threads:[~2025-05-07 17:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-07 15:45 [LTP] [PATCH] mmap_24-1: Change vm.max_map_count if needed Martin Doucha
2025-05-07 17:53 ` Petr Vorel [this message]
2025-05-09 4:03 ` Li Wang via ltp
2025-05-09 11:34 ` Martin Doucha
2025-05-09 12:00 ` Li Wang via ltp
2025-05-09 10:15 ` Martin Doucha
2025-05-09 10:52 ` Petr Vorel
2025-05-09 9:58 ` Cyril Hrubis
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