linux-kernel - Re: sparc64 WARNING: at mm/mmap.c:2757 exit

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Date:	Tue, 22 Oct 2013 20:46:12 +0300
From:	Aaro Koskinen <aaro.koskinen@....fi>
To:	David Miller <davem@...emloft.net>
Cc:	mroos@...ux.ee, sparclinux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: sparc64 WARNING: at mm/mmap.c:2757 exit_mmap+0x13c/0x160()

Hi,

On Sat, Aug 03, 2013 at 01:40:42PM -0700, David Miller wrote:
> > On Mon, Jun 17, 2013 at 08:32:25AM +0300, Aaro Koskinen wrote:
> >> On Mon, Jun 17, 2013 at 12:06:00AM +0300, Meelis Roos wrote:
> >> > Got this in 3.10-rc6 whil testing debian unstable upgrade with aptitude. 
> >> > 3.10-rc5 did not exhibit this (nor any other kernel recently tried, 
> >> > including most -rc's). Does not seem to be reproducible.
> >> 
> >> I get this regularly on Ultrasparc during long compilations. It's been
> >> there with all recent kernels (probably at least since 3.8). Latest I
> >> saw with 3.10-rc5.
> > 
> > Two examples:
> 
> Thanks for the reports, I'm actively looking into this.

Got this again with 3.12-rc5 while doing GCC 4.8.2 bootstrap (during
make check phase):

[83998.025998] ------------[ cut here ]------------
[83998.080312] WARNING: CPU: 0 PID: 3983 at /home/aaro/los/work/shared/linux-v3.12-rc5/mm/mmap.c:2729 exit_mmap+0x138/0x160()
[83998.212541] Modules linked in:
[83998.248987] CPU: 0 PID: 3983 Comm: expect Not tainted 3.12.0-rc5-ultra-los.git-d7b26d7-dirty #1
[83998.353171] Call Trace:
[83998.382310]  [00000000004b79d8] exit_mmap+0x138/0x160
[83998.442723]  [00000000004503cc] mmput+0x2c/0xc0
[83998.496885]  [00000000004cf338] flush_old_exec+0x418/0x520
[83998.562508]  [000000000051294c] load_elf_binary+0x20c/0x1660
[83998.630194]  [00000000004ce9f8] search_binary_handler+0x78/0x200
[83998.702061]  [00000000004cfc1c] do_execve_common.isra.48+0x3dc/0x500
[83998.778105]  [00000000004cffcc] compat_sys_execve+0x2c/0x60
[83998.844758]  [0000000000406074] linux_sparc_syscall32+0x34/0x40
[83998.915565] ---[ end trace 1f66da8de6eddeb8 ]---
[83998.970773] BUG: Bad rss-counter state mm:fffff80019c4c000 idx:1 val:512
[85190.371621] ld[17707]: segfault at 58 ip 00000000f7d0d164 (rpc 00000000f7d0cf90) sp 00000000ffc36a20 error 30001 in libbfd-2.23.2.so[f7cc8000+ba000]

The box didn't die yet... Let's hope it will let GCC testsuite to finish.

A.
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