In trying to determine if core count had any effect on this bug, I set maxcpus to 4 and tried loading the driver on the kernel with the shadow stack enabled (aka the standard -generic config). It looks like the same root issue occurred, but this time, I got a panic with a trace that corroborates the claim that this is related to the shadow stack:
[ 391.736417] Internal error: Oops - FPAC: 0000000072000000 [#1] SMP [ 391.744257] Modules linked in: nvidia(OE+) ecdh_generic ecc qrtr cdc_ether cdc_subset usbnet cfg80211 binfmt_misc dax_hmem cxl_acpi cxl_core ast i2c_algo_bit nvidia_cspmu arm_spe_pmu arm_smmuv3_pmu arm_cspmu_module uio_pdrv_genirq uio spi_nor acpi_ipmi mtd nls_iso8859_1 ipmi_ssif ipmi_devintf cppc_cpufreq ipmi_msghandler acpi_power_meter dm_multipath efi_pstore nfnetlink dmi_sysfs ip_tables x_tables autofs4 btrfs blake2b_generic raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor xor_neon raid6_pq libcrc32c raid1 raid0 mlx5_ib ib_uverbs macsec ib_core mlx5_dpll i2c_smbus crct10dif_ce polyval_ce polyval_generic ghash_ce sm4_ce_gcm sm4_ce_ccm sm4_ce sm4_ce_cipher sm4 sm3_ce sm3 nvme sha3_ce sha2_ce sha256_arm64 sha1_ce mlx5_core nvme_core mlxfw nvme_auth psample xhci_pci tls xhci_pci_renesas pci_hyperv_intf spi_tegra210_quad i2c_tegra aes_neon_bs aes_neon_blk aes_ce_blk aes_ce_cipher [ 391.826552] CPU: 0 PID: 14412 Comm: insmod Tainted: G OE 6.8.1+ #2 [ 391.834202] Hardware name: /, BIOS 01.02.01 20240207 [ 391.840074] pstate: 63400009 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) [ 391.847190] pc : __kmalloc+0x1e4/0x498 [ 391.851025] lr : 0xffffc04000000000 [ 391.854605] sp : ffff8000a3ab3620 [ 391.857987] x29: ffff8000a3ab3620 x28: 0000000000000001 x27: 0000000000000001 [ 391.865282] x26: 00000000000001f8 x25: 0000000000aa1d70 x24: ffff00008feac028 [ 391.872577] x23: ffffc040aab743f0 x22: ffff80008d4c5020 x21: ffff8000a3ab37f8 [ 391.879871] x20: 0000000000000038 x19: ffff8000a3ab3658 x18: ffff8000a3ab3614 [ 391.887165] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000004 [ 391.894459] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 391.901753] x11: 0000000000000000 x10: ffff8000a3ab36a0 x9 : ffffc040c0af8d48 [ 391.909049] x8 : ffff00008edc3c40 x7 : 0000000000000000 x6 : 0000000000000000 [ 391.916343] x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 [ 391.923637] x2 : 0000000000000000 x1 : ffff00008e87c480 x0 : ffff00008edc3c00 [ 391.930931] Call trace: [ 391.933427] __kmalloc+0x1e4/0x498 [ 391.936899] 0xc0007304e5f6c040 [ 391.940107] Code: a9435bf5 a94463f7 910183ff f85f8e5e (d50323bf) [ 391.946336] ---[ end trace 0000000000000000 ]--- [ 391.977579] Kernel panic - not syncing: corrupted shadow stack detected inside scheduler [ 391.980605] kauditd_printk_skb: 98 callbacks suppressed [ 391.980607] audit: type=1400 audit(1713999301.128:108): apparmor="DENIED" operation="open" class="file" profile="rsyslogd" name="/run/systemd/sessions/" pid=801 comm=72733A6D61696E20513A526567 requested_mask="r" denied_mask="r" fsuid=103 ouid=0 [ 391.980674] audit: type=1400 audit(1713999301.128:109): apparmor="DENIED" operation="open" class="file" profile="rsyslogd" name="/run/systemd/sessions/" pid=801 comm=72733A6D61696E20513A526567 requested_mask="r" denied_mask="r" fsuid=103 ouid=0 [ 391.980679] audit: type=1400 audit(1713999301.128:110): apparmor="DENIED" operation="open" class="file" profile="rsyslogd" name="/run/systemd/sessions/" pid=801 comm=72733A6D61696E20513A526567 requested_mask="r" denied_mask="r" fsuid=103 ouid=0 [ 392.057603] SMP: stopping secondary CPUs [ 392.061632] Kernel Offset: 0x404040690000 from 0xffff800080000000 [ 392.067859] PHYS_OFFSET: 0x80000000 [ 392.071420] CPU features: 0x0,00000000,d002cd4a,2b67fea7 [ 392.076848] Memory Limit: none [ 392.106695] ---[ end Kernel panic - not syncing: corrupted shadow stack detected inside scheduler ]--- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2062380 Title: Using a 6.8 kernel 'modprobe nvidia' hangs on Quanta Grace Hopper To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-535-server/+bug/2062380/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
