From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 207173] kvm compiling problem 5.6.x kvm_main.c:2236:42: error: ‘nr_pages_avail’ may be used uninitialized in this function
Date: Sun, 10 May 2020 02:04:46 +0000 [thread overview]
Message-ID: <bug-207173-28872-qLvxKTIWL7@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-207173-28872@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=207173
Tony Cook (tony-cook@bigpond.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tony-cook@bigpond.com
--- Comment #10 from Tony Cook (tony-cook@bigpond.com) ---
arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function
‘__kvm_gfn_to_hva_cache_init’:
arch/x86/kvm/../../../virt/kvm/kvm_main.c:2236:42: error: ‘nr_pages_avail’ may
be used uninitialized in this function [-Werror=maybe-uninitialized]
2236 | for ( ; start_gfn <= end_gfn; start_gfn += nr_pages_avail) {
cc1: all warnings being treated as errors
make[2]: *** [scripts/Makefile.build:267:
arch/x86/kvm/../../../virt/kvm/kvm_main.o] Error 1
make[1]: *** [scripts/Makefile.build:505: arch/x86/kvm] Error 2
make[1]: *** Waiting for unfinished jobs....
Nothing non-standard here, just trying to build the latest kernel 5.6.11 with #
Compiler: gcc (GCC) 10.0.1 20200430 (Red Hat 10.0.1-0.14)
I agree that there is in fact no error here as the nr_pages_avail is set before
it is used to increment start_gfn, or at any rate one can infer that it might
be set by the procedure call that passes it by reference. Nonetheless it is
more than just annoying when this breaks my build. Either change the default
setting and disable werror for this module or make the uneccessary assignment
just for my pleasure.
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next prev parent reply other threads:[~2020-05-10 2:04 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-09 14:25 [Bug 207173] New: kvm compiling problem 5.6.x kvm_main.c:2236:42: error: ‘nr_pages_avail’ may be used uninitialized in this function bugzilla-daemon
2020-04-12 7:28 ` [Bug 207173] " bugzilla-daemon
2020-04-13 23:41 ` bugzilla-daemon
2020-04-14 9:19 ` bugzilla-daemon
2020-04-14 15:37 ` bugzilla-daemon
2020-04-14 18:53 ` bugzilla-daemon
2020-04-15 1:19 ` bugzilla-daemon
2020-04-15 5:43 ` bugzilla-daemon
2020-04-26 2:10 ` bugzilla-daemon
2020-04-27 16:45 ` bugzilla-daemon
2020-05-10 2:04 ` bugzilla-daemon [this message]
2020-05-12 10:30 ` bugzilla-daemon
2020-05-12 14:37 ` bugzilla-daemon
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