From: Szabolcs Nagy <szabolcs.nagy@arm.com>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: Rongwei Wang via Libc-alpha <libc-alpha@sourceware.org>,
fweimer@redhat.com, xuyu@linux.alibaba.com,
gavin.dg@linux.alibaba.com
Subject: Re: [PATCH v6 1/2] elf: Properly align PT_LOAD segments [BZ #28676]
Date: Mon, 13 Dec 2021 11:52:11 +0000 [thread overview]
Message-ID: <20211213115211.GV3294453@arm.com> (raw)
In-Reply-To: <87h7bczq0q.fsf@igel.home>
The 12/13/2021 12:46, Andreas Schwab wrote:
> On Dez 13 2021, Rongwei Wang via Libc-alpha wrote:
>
> > + else
> > + {
> > + /* Unmap the unused regions. */
> > + ElfW(Addr) delta = map_start_aligned - map_start;
> > + if (delta)
> > + __munmap ((void *) map_start, delta);
> > + ElfW(Addr) map_end = map_start_aligned + maplength;
> > + delta = map_start + maplen - map_end;
> > + if (delta)
> > + __munmap ((void *) map_end, delta);
>
> I don't think map_end is guaranteed to be page-aligned.
indeed i see failing munmap syscalls in strace
..
3161105 munmap(0xf7973040, 57344) = -1 EINVAL (Invalid argument)
3161105 munmap(0xf79591d4, 24576) = -1 EINVAL (Invalid argument)
3161107 munmap(0xf6031038, 45056) = -1 EINVAL (Invalid argument)
3161108 munmap(0xf56f1038, 53248) = -1 EINVAL (Invalid argument)
...
next prev parent reply other threads:[~2021-12-13 11:52 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-04 4:58 [PATCH RFC 0/1] make ld.so map .text LOAD ssegments and aligned by p_align Rongwei Wang
2021-12-04 4:58 ` [PATCH RFC 1/1] elf: align the mapping address of LOAD segments with p_align Rongwei Wang
2021-12-04 18:10 ` Florian Weimer
2021-12-06 2:47 ` Rongwei Wang
2021-12-06 14:48 ` H.J. Lu
2021-12-08 2:14 ` Rongwei Wang
2021-12-08 2:33 ` H.J. Lu
2021-12-08 3:04 ` Rongwei Wang
2021-12-08 23:52 ` H.J. Lu
2021-12-09 1:43 ` Rongwei Wang
2021-12-10 12:39 ` [PATCH v5 0/2] fix p_align on PT_LOAD segment in DSO isn't honored Rongwei Wang
2021-12-10 12:39 ` [PATCH v5 1/2] elf: Properly align PT_LOAD segments Rongwei Wang
2021-12-10 15:43 ` H.J. Lu
2021-12-10 15:45 ` Florian Weimer
2021-12-10 18:54 ` H.J. Lu
2021-12-10 18:57 ` H.J. Lu
2021-12-10 12:39 ` [PATCH v5 2/2] Add a testcase to check alignment of PT_LOAD segment Rongwei Wang
2021-12-10 13:48 ` Adhemerval Zanella
2021-12-10 15:41 ` H.J. Lu
2021-12-10 18:56 ` H.J. Lu
2021-12-10 20:05 ` Adhemerval Zanella
2021-12-10 20:24 ` H.J. Lu
2021-12-10 21:34 ` Adhemerval Zanella
2021-12-10 13:13 ` [PATCH v5 0/2] fix p_align on PT_LOAD segment in DSO isn't honored H.J. Lu
2021-12-10 13:58 ` Rongwei Wang
2021-12-13 2:51 ` [PATCH v6 " Rongwei Wang
2021-12-13 2:51 ` [PATCH v6 1/2] elf: Properly align PT_LOAD segments [BZ #28676] Rongwei Wang
2021-12-13 11:05 ` Szabolcs Nagy
2021-12-13 11:17 ` Florian Weimer
2021-12-13 11:35 ` Szabolcs Nagy
2021-12-13 11:59 ` Florian Weimer
2021-12-13 13:20 ` H.J. Lu
2021-12-13 13:26 ` Florian Weimer
2021-12-13 13:34 ` H.J. Lu
2021-12-13 11:46 ` Andreas Schwab
2021-12-13 11:52 ` Szabolcs Nagy [this message]
2021-12-13 14:51 ` Rongwei Wang
2021-12-13 17:37 ` Szabolcs Nagy
2021-12-13 17:50 ` Florian Weimer
2021-12-13 2:51 ` [PATCH v6 2/2] Add a testcase to check alignment of PT_LOAD segment Rongwei Wang
2021-12-14 2:03 ` [PATCH v6 0/2] fix p_align on PT_LOAD segment in DSO isn't honored Fangrui Song
2021-12-14 3:56 ` H.J. Lu
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