From: Andreas Schwab <schwab@suse.de>
To: Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-riscv@lists.infradead.org
Subject: Re: BUG: Bad page map
Date: Tue, 11 Dec 2018 11:33:16 +0100 [thread overview]
Message-ID: <mvm8t0w9wur.fsf@suse.de> (raw)
In-Reply-To: <alpine.DEB.2.21.999.1812110833360.19013@utopia.booyaka.com> (Paul Walmsley's message of "Tue, 11 Dec 2018 08:34:57 +0000 (UTC)")
This is the reproducer:
#include <sys/mman.h>
int
main (void)
{
char *a = mmap (0, 4096, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
++*a;
mprotect (a, 4096, PROT_NONE);
}
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
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prev parent reply other threads:[~2018-12-11 10:33 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-10 14:05 BUG: Bad page map Andreas Schwab
2018-12-11 8:34 ` Paul Walmsley
2018-12-11 10:04 ` Andreas Schwab
2018-12-11 10:33 ` Andreas Schwab [this message]
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