From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mailgate.ics.forth.gr ([139.91.1.2]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mZCLk-005e1x-AP for kexec@lists.infradead.org; Sat, 09 Oct 2021 13:25:18 +0000 Received: from av3.ics.forth.gr (av3in.ics.forth.gr [139.91.1.77]) by mailgate.ics.forth.gr (8.15.2/ICS-FORTH/V10-1.8-GATE) with ESMTP id 199DPEa8034049 for ; Sat, 9 Oct 2021 16:25:14 +0300 (EEST) MIME-Version: 1.0 Date: Sat, 09 Oct 2021 16:25:05 +0300 From: Nick Kossifidis Subject: Re: RISC-V: patched kexec-tools on github for review/testing In-Reply-To: References: <00c521b5b872b06c9350145c7d39fe7c@mailhost.ics.forth.gr> Message-ID: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Alexandre Ghiti Cc: Nick Kossifidis , ebiederm@xmission.com, kexec@lists.infradead.org, linux-riscv , "linux-kernel@vger.kernel.org List" , Alexandre ghiti , rppt@kernel.org, geert+renesas@glider.be, Stephano Cetola , Philipp Tomsich , Palmer Dabbelt , Anup Patel , Atish Patra zqPPhM65z4IgMjAyMS0xMC0wNiAxNDoxMCwgQWxleGFuZHJlIEdoaXRpIM6tzrPPgc6xz4jOtToK PiAKPiBTbyBJIGZvbGxvd2VkIHRoZSBpbnN0cnVjdGlvbnMgaGVyZToKPiBodHRwczovL2RvY3Vt ZW50YXRpb24uc3VzZS5jb20vZnItZnIvc2xlcy8xMi1TUDMvaHRtbC9TTEVTLWFsbC9jaGEtdHVu aW5nLWtleGVjLmh0bWwjY2hhLXR1bmluZy1rZXhlYy1iYXNpYy11c2FnZSwKPiBiZWxvdyB0aGUg b3V0cHV0IG9uIGFuIFVubWF0Y2hlZCBib2FyZCB1c2luZyBhIHZtbGludXggc3RvcmVkIG9uIGEg c2QKPiBjYXJkOgo+IAo+IHVidW50dUB1YnVudHU6fiQgc3VkbyBzYmluL2tleGVjIC1sIHZtbGlu dXggLS1hcHBlbmQ9IiQoY2F0Cj4gL3Byb2MvY21kbGluZSkiIC0taW5pdHJkPS9ib290L2luaXRy ZC5pbWcKPiBXYXJuaW5nOiBObyBjbWRsaW5lIHByb3ZpZGVkLCB1c2luZyBhcHBlbmQgc3RyaW5n IGFzIGNtZGxpbmUKPiBXYXJuaW5nOiBObyBkdGIgcHJvdmlkZWQsIHVzaW5nIC9zeXMvZmlybXdh 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enigma.ics.forth.gr (enigma.ics.forth.gr [139.91.151.35]) by av3.ics.forth.gr (Symantec Messaging Gateway) with SMTP id 55.96.23878.53891616; Sat, 9 Oct 2021 16:25:09 +0300 (EEST) X-ICS-AUTH-INFO: Authenticated user: at ics.forth.gr MIME-Version: 1.0 Date: Sat, 09 Oct 2021 16:25:05 +0300 From: Nick Kossifidis To: Alexandre Ghiti Cc: Nick Kossifidis , ebiederm@xmission.com, kexec@lists.infradead.org, linux-riscv , "linux-kernel@vger.kernel.org List" , Alexandre ghiti , rppt@kernel.org, geert+renesas@glider.be, Stephano Cetola , Philipp Tomsich , Palmer Dabbelt , Anup Patel , Atish Patra Subject: Re: RISC-V: patched kexec-tools on github for review/testing Organization: FORTH In-Reply-To: References: <00c521b5b872b06c9350145c7d39fe7c@mailhost.ics.forth.gr> Message-ID: X-Sender: mick@mailhost.ics.forth.gr User-Agent: Roundcube Webmail/1.3.16 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBIsWRmVeSWpSXmKPExsXSHT1dWdd0RmKiwdoDchbP7nxltVi36AKr 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av3.ics.forth.gr (Symantec Messaging Gateway) with SMTP id 55.96.23878.53891616; Sat, 9 Oct 2021 16:25:09 +0300 (EEST) X-ICS-AUTH-INFO: Authenticated user: at ics.forth.gr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Date: Sat, 09 Oct 2021 16:25:05 +0300 From: Nick Kossifidis To: Alexandre Ghiti Cc: Nick Kossifidis , ebiederm@xmission.com, kexec@lists.infradead.org, linux-riscv , "linux-kernel@vger.kernel.org List" , Alexandre ghiti , rppt@kernel.org, geert+renesas@glider.be, Stephano Cetola , Philipp Tomsich , Palmer Dabbelt , Anup Patel , Atish Patra Subject: Re: RISC-V: patched kexec-tools on github for review/testing Organization: FORTH In-Reply-To: References: <00c521b5b872b06c9350145c7d39fe7c@mailhost.ics.forth.gr> Message-ID: X-Sender: mick@mailhost.ics.forth.gr User-Agent: Roundcube Webmail/1.3.16 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBIsWRmVeSWpSXmKPExsXSHT1dWdd0RmKiwdoDchbP7nxltVi36AKr 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bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Στις 2021-10-06 14:10, Alexandre Ghiti έγραψε: > > So I followed the instructions here: > https://documentation.suse.com/fr-fr/sles/12-SP3/html/SLES-all/cha-tuning-kexec.html#cha-tuning-kexec-basic-usage, > below the output on an Unmatched board using a vmlinux stored on a sd > card: > > ubuntu@ubuntu:~$ sudo sbin/kexec -l vmlinux --append="$(cat > /proc/cmdline)" --initrd=/boot/initrd.img > Warning: No cmdline provided, using append string as cmdline > Warning: No dtb provided, using /sys/firmware/fdt > [ 1813.472671] INFO: task kworker/1:0:988 blocked for more than 120 > seconds. > [ 1813.478751] Not tainted 5.15.0-rc1+ #15 > [ 1813.483110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" > disables this message. > Could not find a free area of memory of 0x3000 bytes... > locate_hole failed > > I used the Ubuntu kernel, so this is pretty large: > -rwxrwxr-x 1 ubuntu ubuntu 277M Oct 5 15:47 vmlinux > -rw-r--r-- 1 root root 98M Sep 21 03:25 /boot/initrd.img > ACK, I haven't tested initrd much TBH, I usually don't use an initrd, and when I do it's a small busybox-based rootfs. > Then if I don't load the initrd (I sometimes have the same warning as > above) I can at least kexec the new kernel but it fails to boot: > > ubuntu@ubuntu:~$ sudo ./sbin/kexec -e > Warning: No cmdline or append string provided > Warning: No dtb provided, using /sys/firmware/fdt > [...] > [ 0.000000] SBI v0.2 HSM extension detected > [ 0.000000] CPU with hartid=0 is not available > [ 0.000000] ------------[ cut here ]------------ > [ 0.000000] kernel BUG at arch/riscv/kernel/smpboot.c:107! > [ 0.000000] Kernel BUG [#1] > [ 0.000000] Modules linked in: > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 5.15.0-rc1+ #15 > [ 0.000000] Hardware name: SiFive HiFive Unmatched A00 (DT) > [ 0.000000] epc : setup_smp+0xcc/0x142 > [ 0.000000] ra : setup_smp+0xc4/0x142 > [ 0.000000] epc : ffffffff80a04080 ra : ffffffff80a04078 sp : > ffffffff81803ec0 > [ 0.000000] gp : ffffffff81a23220 tp : ffffffff81810500 t0 : > ffffffff81a3551f > [ 0.000000] t1 : ffffffffffffffff t2 : 0000000000000000 s0 : > ffffffff81803f00 > [ 0.000000] s1 : 0000000000000000 a0 : 0000000000000000 a1 : > 0000000000000000 > [ 0.000000] a2 : 0000000000000000 a3 : 0000000000000001 a4 : > 0000000000000000 > [ 0.000000] a5 : ffffffff80c64500 a6 : 0000000000000004 a7 : > 000000000000ff00 > [ 0.000000] s2 : 0000000000000005 s3 : 0000000000000000 s4 : > ffffffff8118f9a8 > [ 0.000000] s5 : 0000000000000007 s6 : ffffffff80c0b790 s7 : > 0000000080000200 > [ 0.000000] s8 : 0000000000000fff s9 : 0000000081000200 s10: > 0000000000000018 > [ 0.000000] s11: 000000000000000b t3 : 0000000000ff0000 t4 : > ffffffffffffffff > [ 0.000000] t5 : ffffffff80c0b7a0 t6 : ffffffff81803bd8 > [ 0.000000] status: 0000000200000100 badaddr: 0000000000000000 > cause: 0000000000000003 > [ 0.000000] [] setup_smp+0xcc/0x142 > [ 0.000000] [] setup_arch+0x56a/0x590 > [ 0.000000] [] start_kernel+0xaa/0xa5c > [ 0.000000] random: get_random_bytes called from > oops_exit+0x44/0x70 with crng_init=0 > [ 0.000000] ---[ end trace 0000000000000000 ]--- > [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle > task! > [ 0.000000] ---[ end Kernel panic - not syncing: Attempted to kill > the idle task! ]--- > > This reliably fails here. > This looks weird, I'll check it out (we have an unmatched here so I'll try to get my hands on it sometime next week). Did you try kdump ? Do you get the same error ? BTW this is what I use for testing most of the time: For kexec: kexec -l /mnt/shared/vmlinux --reuse-cmdline kexec -e For kdump: kexec -p /mnt/shared/vmlinux echo c > /proc/sysrq-trigger Thanks a lot for your time ! Regards, Nick