I wonder if the bug is with trying to install self-built dkms modules, instead of pre-built ones, and how come ubuntu-drivers is not offering pre-built ones...
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-aws in Ubuntu. https://bugs.launchpad.net/bugs/2029934 Title: arm64 AWS host hangs during modprobe nvidia on lunar and mantic Status in linux-aws package in Ubuntu: New Status in nvidia-graphics-drivers-525 package in Ubuntu: New Status in nvidia-graphics-drivers-525-server package in Ubuntu: New Status in nvidia-graphics-drivers-535 package in Ubuntu: New Status in nvidia-graphics-drivers-535-server package in Ubuntu: New Bug description: Loading the nvidia driver dkms modules with "modprove nvidia" will result in the host hanging and being completely unusable. This was reproduced using both the linux generic and linux-aws kernels on lunar and mantic using an AWS g5g.xlarge instance. To reproduce using the generic kernel: # Deploy a arm64 host with an nvidia gpu, such as an AWS g5g.xlarge. # Install the linux generic kernel from lunar-updates: $ sudo DEBIAN_FRONTEND=noninteractive apt-get install -y -o DPkg::Options::=--force-confold linux-generic # Boot to the linux-generic kernel (this can be accomplished by removing the existing kernel, in this case it was the linux-aws 6.2.0-1008-aws kernel) $ sudo DEBIAN_FRONTEND=noninteractive apt-get purge -y -o DPkg::Options::=--force-confold linux-aws linux-aws-headers-6.2.0-1008 linux-headers-6.2.0-1008-aws linux-headers-aws linux-image-6.2.0-1008-aws linux-image-aws linux-modules-6.2.0-1008-aws linux-headers-6.2.0-1008-aws linux-image-6.2.0-1008-aws linux-modules-6.2.0-1008-aws $ reboot # Install the Nvidia 535-server driver DKMS package: $ sudo DEBIAN_FRONTEND=noninteractive apt-get install -y nvidia-driver-535-server # Enable the driver $ sudo modprobe nvidia # At this point the system will hang and never return. # A reboot instead of a modprobe will result in a system that never boots up all the way. I was able to recover the console logs from such a system and found (the full captured log is attached): [ 1.964942] nvidia: loading out-of-tree module taints kernel. [ 1.965475] nvidia: module license 'NVIDIA' taints kernel. [ 1.965905] Disabling lock debugging due to kernel taint [ 1.980905] nvidia: module verification failed: signature and/or required key missing - tainting kernel [ 2.012067] nvidia-nvlink: Nvlink Core is being initialized, major device number 510 [ 2.012715] [ 62.025143] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 62.025807] rcu: 3-...0: (14 ticks this GP) idle=c04c/1/0x4000000000000000 softirq=653/654 fqs=3301 [ 62.026516] (detected by 0, t=15003 jiffies, g=-699, q=216 ncpus=4) [ 62.027018] Task dump for CPU 3: [ 62.027290] task:systemd-udevd state:R running task stack:0 pid:164 ppid:144 flags:0x0000000e [ 62.028066] Call trace: [ 62.028273] __switch_to+0xbc/0x100 [ 62.028567] 0x228 Timed out for waiting the udev queue being empty. Timed out for waiting the udev queue being empty. [ 242.045143] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 242.045655] rcu: 3-...0: (14 ticks this GP) idle=c04c/1/0x4000000000000000 softirq=653/654 fqs=12303 [ 242.046373] (detected by 1, t=60008 jiffies, g=-699, q=937 ncpus=4) [ 242.046874] Task dump for CPU 3: [ 242.047146] task:systemd-udevd state:R running task stack:0 pid:164 ppid:144 flags:0x0000000f [ 242.047922] Call trace: [ 242.048128] __switch_to+0xbc/0x100 [ 242.048417] 0x228 Timed out for waiting the udev queue being empty. Begin: Loading essential drivers ... [ 384.001142] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [modprobe:215] [ 384.001738] Modules linked in: nvidia(POE+) crct10dif_ce video polyval_ce polyval_generic drm_kms_helper ghash_ce syscopyarea sm4 sysfillrect sha2_ce sysimgblt sha256_arm64 sha1_ce drm nvme nvme_core ena nvme_common aes_neon_bs aes_neon_blk aes_ce_blk aes_ce_cipher [ 384.003513] CPU: 2 PID: 215 Comm: modprobe Tainted: P OE 6.2.0-26-generic #26-Ubuntu [ 384.004210] Hardware name: Amazon EC2 g5g.xlarge/, BIOS 1.0 11/1/2018 [ 384.004715] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 384.005259] pc : smp_call_function_many_cond+0x1b4/0x4b4 [ 384.005683] lr : smp_call_function_many_cond+0x1d0/0x4b4 [ 384.006108] sp : ffff8000089a3a70 [ 384.006381] x29: ffff8000089a3a70 x28: 0000000000000003 x27: ffff00056d1fafa0 [ 384.006954] x26: ffff00056d1d76c8 x25: ffffc87cf18bdd10 x24: 0000000000000003 [ 384.007527] x23: 0000000000000001 x22: ffff00056d1d76c8 x21: ffffc87cf18c2690 [ 384.008086] x20: ffff00056d1fafa0 x19: ffff00056d1d76c0 x18: ffff80000896d058 [ 384.008645] x17: 0000000000000000 x16: 0000000000000000 x15: 617362755f5f0073 [ 384.009209] x14: 0000000000000001 x13: 0000000000000006 x12: 4630354535323145 [ 384.009779] x11: 0101010101010101 x10: ffffb78318e9c0e0 x9 : ffffc87ceeac7da4 [ 384.010339] x8 : ffff00056d1d76f0 x7 : 0000000000000000 x6 : 0000000000000000 [ 384.010894] x5 : 0000000000000004 x4 : 0000000000000000 x3 : ffff00056d1fafa8 [ 384.011464] x2 : 0000000000000003 x1 : 0000000000000011 x0 : 0000000000000000 [ 384.012030] Call trace: [ 384.012241] smp_call_function_many_cond+0x1b4/0x4b4 [ 384.012635] kick_all_cpus_sync+0x50/0xa0 [ 384.012961] flush_module_icache+0x64/0xd0 [ 384.013294] load_module+0x4ec/0xb54 [ 384.013588] __do_sys_finit_module+0xb0/0x150 [ 384.013944] __arm64_sys_finit_module+0x2c/0x50 [ 384.014306] invoke_syscall+0x7c/0x124 [ 384.014613] el0_svc_common.constprop.0+0x5c/0x1cc [ 384.015000] do_el0_svc+0x38/0x60 [ 384.015280] el0_svc+0x30/0xe0 [ 384.015540] el0t_64_sync_handler+0x11c/0x150 [ 384.015896] el0t_64_sync+0x1a8/0x1ac This same procedure impacts the 525, 525-server, 535 and 535-server drivers. It does *not* hang a similarly configured host running focal or jammy. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-aws/+bug/2029934/+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
