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Sat, 07 Oct 2023 02:36:33 -0700 (PDT) MIME-Version: 1.0 References: <202310071301.a5113890-oliver.sang@intel.com> In-Reply-To: <202310071301.a5113890-oliver.sang@intel.com> From: Uros Bizjak Date: Sat, 7 Oct 2023 11:36:26 +0200 Message-ID: Subject: Re: [tip:x86/percpu] [x86/percpu] ca42563486: BUG:kernel_failed_in_early-boot_stage,last_printk:Booting_the_kernel(entry_offset:#) To: kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, x86@kernel.org, Ingo Molnar , Nadav Amit , Andy Lutomirski , Brian Gerst , Denys Vlasenko , "H. Peter Anvin" , Linus Torvalds , Peter Zijlstra , Thomas Gleixner , Josh Poimboeuf , linux-mm@kvack.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Stat-Signature: uypoinr4eew8fb9ibwwgc8im48g36n81 X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 0AB7B180034 X-Rspam-User: X-HE-Tag: 1696671394-345854 X-HE-Meta: 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 Rw0abC4b A4MgA4atNTix4vsNo3xGgD6DqWvWstHn3YjH00wKrltRxDLPVRY1jbBWmyHscCQOJIYHI5MPRW/TNpGZURxnolwj8M2mvlaMzU5dXDgsrZ0HKOQPkwIs9IvOHYMjYDtXnZ2zHx+2YwCn411K8rze5Dc3SKZSGzsHaTUwotiKBqAeTe3u4kIgfwxE9y/oCLcgNfTr27QH15XQ4dOnUYGJrSHR58ja38VNUiMM9+og4FSq0kouzr6GmcWl3BH63haldTN2rH6viF7eIiN8kRCMjnJTkjULJxXdb44rTx9TJZXgFXwFrzKYtpWlrSXKSKKsPNjZSw1RkicBpeZ/AEJrG3NmCgUlRxxjHOT6G77plYWtM7nNbT3/WpSOI7fr/XXNs/hxqc37NGu0n7Gz47XObvhgyfLI5R1pzyxIl/mWbMEs0wfaS68ND+fCnbVM/8YoDXGye X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Oct 7, 2023 at 8:16=E2=80=AFAM kernel test robot wrote: > > > > Hello, > > kernel test robot noticed "BUG:kernel_failed_in_early-boot_stage,last_pri= ntk:Booting_the_kernel(entry_offset:#)" on: > > commit: ca4256348660cb2162668ec3d13d1f921d05374a ("x86/percpu: Use C for = percpu read/write accessors") > https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git x86/percpu > > [test failed on linux-next/master 0f0fe5040de5e5fd9b040672e37725b046e312f= 0] > > in testcase: boot > > compiler: gcc-12 > test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 1= 6G > > (please refer to attached dmesg/kmsg for entire log/backtrace) > > > +------------------------------------------------------------------------= --------------+------------+------------+ > | = | 9a462b9eaf | ca42563486 | > +------------------------------------------------------------------------= --------------+------------+------------+ > | boot_successes = | 13 | 0 | > | boot_failures = | 0 | 13 | > | BUG:kernel_failed_in_early-boot_stage,last_printk:Booting_the_kernel(en= try_offset:#) | 0 | 13 | > +------------------------------------------------------------------------= --------------+------------+------------+ Since this is a randconfig (x86_64-randconfig-006-20231006), does it mean that all other configs worked OK: i386 allmodconfig gcc i386 allnoconfig gcc i386 allyesconfig gcc i386 buildonly-randconfig-001-20231005 gcc i386 buildonly-randconfig-002-20231005 gcc i386 buildonly-randconfig-003-20231005 gcc i386 buildonly-randconfig-004-20231005 gcc i386 buildonly-randconfig-005-20231005 gcc i386 buildonly-randconfig-006-20231005 gcc i386 debian-10.3 gcc i386 defconfig gcc i386 randconfig-001-20231005 gcc i386 randconfig-002-20231005 gcc i386 randconfig-003-20231005 gcc i386 randconfig-004-20231005 gcc i386 randconfig-005-20231005 gcc i386 randconfig-006-20231005 gcc and x86_64 allnoconfig gcc x86_64 allyesconfig gcc x86_64 defconfig gcc x86_64 randconfig-001-20231005 gcc x86_64 randconfig-002-20231005 gcc x86_64 randconfig-003-20231005 gcc x86_64 randconfig-004-20231005 gcc x86_64 randconfig-005-20231005 gcc x86_64 randconfig-006-20231005 gcc x86_64 rhel-8.3-rust clang x86_64 rhel-8.3 gcc are of interest to me. Assuming they are built with gcc-12, I wouldn't immediately blame the compiler for the failure. Due to the nature of the change, perhaps a weakness in the kernel has been found with some obscure config setting. As said, my default Fedora 39 kernel (6.5.5), built with gcc-13 works without any problems. Also, does a successful report from yesterday [1] mean everything was OK? [1] https://lore.kernel.org/lkml/202310060322.yeZgaj6Q-lkp@intel.com/ Uros.