From: Cyril Hrubis <chrubis@suse.cz>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH v3] syscalls/mmap17.c: Add new regression test
Date: Wed, 4 Apr 2018 16:31:57 +0200 [thread overview]
Message-ID: <20180404143157.GA30264@rei> (raw)
In-Reply-To: <1519284767-1758-1-git-send-email-yangx.jy@cn.fujitsu.com>
Hi!
> We add a regression test to check if mmap() can't map invalid physical
> addresses. If mmap() maps /dev/mem offsets outside of the addressable
> limits of a system, setting reserved bits corrupts the page table and
> may trigger a kernel crash.
I wonder if we can address Jan's comment and make it more generic by
trying to mmap a certain sequence of offsets in /dev/mem and either
expect them to return a valid pointer or fail with MAP_FAILED. We would
have to make sure that we got the 1ULL<<phys_addr_bits there for the x86
case but we wouldn't have to skip the test on non-x86 hardware.
--
Cyril Hrubis
chrubis@suse.cz
next prev parent reply other threads:[~2018-04-04 14:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-02 10:03 [LTP] [PATCH] syscalls/mmap17.c: Add new regression test Xiao Yang
2018-02-02 10:20 ` Jan Stancek
2018-02-05 10:45 ` Xiao Yang
2018-02-05 11:42 ` Jan Stancek
2018-02-06 6:41 ` Xiao Yang
2018-02-06 19:53 ` Jan Stancek
2018-02-06 21:15 ` Jan Stancek
2018-02-07 12:05 ` Xiao Yang
2018-02-11 21:47 ` Jan Stancek
2018-02-14 7:34 ` Xiao Yang
2018-02-22 7:32 ` [LTP] [PATCH v3] " Xiao Yang
2018-04-04 14:31 ` Cyril Hrubis [this message]
2019-04-16 10:42 ` xuyang
2018-02-06 6:43 ` [LTP] [PATCH v2] " Xiao Yang
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