From: "J. R. Okajima" <hooanon05g@gmail.com>
To: Ira Weiny <ira.weiny@intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH][CFT] [coredump] don't use __kernel_write() on kmap_local_page()
Date: Mon, 03 Oct 2022 19:48:28 +0900 [thread overview]
Message-ID: <7714.1664794108@jrobl> (raw)
In-Reply-To: <YzpcXU2WO8e22Cmi@iweiny-desk3>
Ira Weiny:
> On Wed, Sep 28, 2022 at 07:29:43PM +0100, Al Viro wrote:
> > On Tue, Sep 27, 2022 at 11:51:17PM +0100, Al Viro wrote:
> > > [I'm going to send a pull request tomorrow if nobody yells;
> > > please review and test - it seems to work fine here, but extra
> > > eyes and extra testing would be very welcome]
I tried gdb backtrace 'bt' command with the new core by v6.0, and it
doesn't show the call trace correctly. Is it related to this commit?
test program
----------------------------------------
void f(int n)
{
printf("%d\n", n);
if (!n)
kill(getpid(), SIGQUIT);
f(--n);
}
int main(int argc, char *argv[])
{
f(atoi(argv[1]));
return 0;
}
----------------------------------------
ulimit -c unlimited
coredump 2
gdb coredump core
bt
----------------------------------------
expected result
kill
f
f
f
main
----------------------------------------
actual result
??
??
----------------------------------------
J. R. Okajima
next prev parent reply other threads:[~2022-10-03 10:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-27 22:51 [PATCH][CFT] [coredump] don't use __kernel_write() on kmap_local_page() Al Viro
2022-09-28 17:57 ` Eric W. Biederman
2022-09-28 18:29 ` Al Viro
2022-10-03 3:51 ` Ira Weiny
2022-10-03 10:48 ` J. R. Okajima [this message]
2022-10-03 19:31 ` Ira Weiny
2022-10-03 22:18 ` Al Viro
2022-10-03 22:58 ` J. R. Okajima
2022-10-03 23:37 ` Al Viro
2022-10-04 0:20 ` Linus Torvalds
2022-10-04 0:31 ` Al Viro
2022-10-04 0:37 ` Linus Torvalds
2022-10-04 0:52 ` Al Viro
2022-10-04 6:18 ` Sedat Dilek
2022-10-09 10:37 ` Sedat Dilek
2022-11-09 13:57 ` Geert Uytterhoeven
2022-10-04 2:17 ` Ira Weiny
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