I updated the bug description to make it clear. Besides, I marked grub as invalid because at this moment it looks like a kernel issue according to the log and the reproducer.
** Changed in: grub2 (Ubuntu) Status: New => Invalid ** Description changed: - When kernel test rebooted onto the 5.15.0-43-generic HWE kernel, no - output appeared on the console after the EFI stub: + Kernel trace happens when bringing up CPU with focal HWE kernel + 5.15.0-43-generic + + Steps to reproduce: enable earlycon and run reboot loop + Expected result: system boots and ready to use + Actual result: kerenl trace happens when bringing up CPU. See the call trace below[1]. + + + [1] (copy from comment #7) + + [ 3.321372] arch_timer: Enabling local workaround for ARM erratum 1418040 + [ 3.321394] CPU245: Booted secondary processor 0x0100310100 [0x413fd0c1] + [ 8.536939] CPU246: failed to come online + [ 8.550338] Detected PIPT I-cache on CPU246 + [ 8.555817] CPU246: failed in unknown state : 0x0 + [ 8.555987] GICv3: CPU246: found redistributor 100370000 region 1:0x0000500100f00000 + [ 8.562727] ------------[ cut here ]------------ + [ 8.562809] GICv3: CPU246: using allocated LPI pending table @0x0000080002680000 + [ 8.569364] Dying CPU not properly vacated! + [ 16.668834] WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:9215 sched_cpu_dying+0x1d0/0x2a0 + [ 16.681496] Modules linked in: + [ 16.684597] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.15.0-43-generic #46~20.04.1-Ubuntu + [ 16.693010] pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) + [ 16.700095] pc : sched_cpu_dying+0x1d0/0x2a0 + [ 16.704432] lr : sched_cpu_dying+0x1d0/0x2a0 + [ 16.708770] sp : ffff80000881bbe0 + [ 16.712132] x29: ffff80000881bbe0 x28: ffffcca930eada80 x27: 0000000000000000 + [ 16.719390] x26: ffff7395107ce000 x25: 00000000000000f6 x24: ffff403e40ed6728 + [ 16.726651] x23: ffffcca930eb2618 x22: 0000000000000000 x21: 00000000000000f6 + [ 16.733907] x20: ffffcca930719100 x19: ffff403e40ee7100 x18: 0000000000000014 + [ 16.741165] x17: 3836323030303830 x16: 3030303078304020 x15: 656c62617420676e + [ 16.748425] x14: 69646e6570204950 x13: 3030303038363230 x12: 3030383030303030 + [ 16.755683] x11: 78304020656c6261 x10: 7420676e69646e65 x9 : ffffcca92e7e39a0 + [ 16.762940] x8 : 6c6c6120676e6973 x7 : 205d393038323635 x6 : c0000000fffeffff + [ 16.770198] x5 : 000000000017ffe8 x4 : 0000000000000000 x3 : ffff80000881b8c8 + [ 16.777457] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 + [ 16.784717] Call trace: + [ 16.787197] sched_cpu_dying+0x1d0/0x2a0 + [ 16.791182] cpuhp_invoke_callback+0x14c/0x5a8 + [ 16.795699] cpuhp_invoke_callback_range+0x5c/0xb8 + [ 16.800568] _cpu_up+0x234/0x360 + [ 16.803844] cpu_up+0xb8/0x110 + [ 16.806945] bringup_nonboot_cpus+0x7c/0xb0 + [ 16.811195] smp_init+0x3c/0x98 + [ 16.814385] kernel_init_freeable+0x1a4/0x39c + [ 16.818813] kernel_init+0x2c/0x158 + [ 16.822359] ret_from_fork+0x10/0x20 + [ 16.825992] ---[ end trace bb9ca924bc23dd10 ]--- + [ 16.830685] CPU246 enqueued tasks (0 total): + [ 16.835356] ------------[ cut here ]------------ + [ 16.835431] GICv3: CPU246: found redistributor 100370000 region 1:0x0000500100f00000 + [ 16.840045] Dying CPU not properly vacated! + [ 16.847925] WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:9215 sched_cpu_dying+0x1d0/0x2a + + + == Original Description == + + + When kernel test rebooted onto the 5.15.0-43-generic HWE kernel, no output appeared on the console after the EFI stub: Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint A0 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint AD EFI stub: Booting Linux Kernel... EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k boundary EFI stub: Using DTB from configuration table EFI stub: Exiting boot services... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1990294 Title: Ampere AltraMax sometimes hangs after "EFI stub: Exiting boot services..." Status in grub2 package in Ubuntu: Invalid Status in linux package in Ubuntu: In Progress Bug description: Kernel trace happens when bringing up CPU with focal HWE kernel 5.15.0-43-generic Steps to reproduce: enable earlycon and run reboot loop Expected result: system boots and ready to use Actual result: kerenl trace happens when bringing up CPU. See the call trace below[1]. [1] (copy from comment #7) [ 3.321372] arch_timer: Enabling local workaround for ARM erratum 1418040 [ 3.321394] CPU245: Booted secondary processor 0x0100310100 [0x413fd0c1] [ 8.536939] CPU246: failed to come online [ 8.550338] Detected PIPT I-cache on CPU246 [ 8.555817] CPU246: failed in unknown state : 0x0 [ 8.555987] GICv3: CPU246: found redistributor 100370000 region 1:0x0000500100f00000 [ 8.562727] ------------[ cut here ]------------ [ 8.562809] GICv3: CPU246: using allocated LPI pending table @0x0000080002680000 [ 8.569364] Dying CPU not properly vacated! [ 16.668834] WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:9215 sched_cpu_dying+0x1d0/0x2a0 [ 16.681496] Modules linked in: [ 16.684597] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.15.0-43-generic #46~20.04.1-Ubuntu [ 16.693010] pstate: 604000c9 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 16.700095] pc : sched_cpu_dying+0x1d0/0x2a0 [ 16.704432] lr : sched_cpu_dying+0x1d0/0x2a0 [ 16.708770] sp : ffff80000881bbe0 [ 16.712132] x29: ffff80000881bbe0 x28: ffffcca930eada80 x27: 0000000000000000 [ 16.719390] x26: ffff7395107ce000 x25: 00000000000000f6 x24: ffff403e40ed6728 [ 16.726651] x23: ffffcca930eb2618 x22: 0000000000000000 x21: 00000000000000f6 [ 16.733907] x20: ffffcca930719100 x19: ffff403e40ee7100 x18: 0000000000000014 [ 16.741165] x17: 3836323030303830 x16: 3030303078304020 x15: 656c62617420676e [ 16.748425] x14: 69646e6570204950 x13: 3030303038363230 x12: 3030383030303030 [ 16.755683] x11: 78304020656c6261 x10: 7420676e69646e65 x9 : ffffcca92e7e39a0 [ 16.762940] x8 : 6c6c6120676e6973 x7 : 205d393038323635 x6 : c0000000fffeffff [ 16.770198] x5 : 000000000017ffe8 x4 : 0000000000000000 x3 : ffff80000881b8c8 [ 16.777457] x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 [ 16.784717] Call trace: [ 16.787197] sched_cpu_dying+0x1d0/0x2a0 [ 16.791182] cpuhp_invoke_callback+0x14c/0x5a8 [ 16.795699] cpuhp_invoke_callback_range+0x5c/0xb8 [ 16.800568] _cpu_up+0x234/0x360 [ 16.803844] cpu_up+0xb8/0x110 [ 16.806945] bringup_nonboot_cpus+0x7c/0xb0 [ 16.811195] smp_init+0x3c/0x98 [ 16.814385] kernel_init_freeable+0x1a4/0x39c [ 16.818813] kernel_init+0x2c/0x158 [ 16.822359] ret_from_fork+0x10/0x20 [ 16.825992] ---[ end trace bb9ca924bc23dd10 ]--- [ 16.830685] CPU246 enqueued tasks (0 total): [ 16.835356] ------------[ cut here ]------------ [ 16.835431] GICv3: CPU246: found redistributor 100370000 region 1:0x0000500100f00000 [ 16.840045] Dying CPU not properly vacated! [ 16.847925] WARNING: CPU: 0 PID: 1 at kernel/sched/core.c:9215 sched_cpu_dying+0x1d0/0x2a == Original Description == When kernel test rebooted onto the 5.15.0-43-generic HWE kernel, no output appeared on the console after the EFI stub: Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint A0 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint 92 Checkpoint AD EFI stub: Booting Linux Kernel... EFI stub: ERROR: FIRMWARE BUG: kernel image not aligned on 64k boundary EFI stub: Using DTB from configuration table EFI stub: Exiting boot services... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1990294/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp