This bug was fixed in the package linux-nvidia-6.5 - 6.5.0-1013.13

---------------
linux-nvidia-6.5 (6.5.0-1013.13) jammy; urgency=medium

  * jammy/linux-nvidia-6.5: 6.5.0-1013.13 -proposed tracker (LP:
#2053169)

  * Fix soft lockup triggered by arm_smmu_mm_invalidate_range (LP: #2048966)
    - Revert "iommu/arm-smmu-v3: Fix soft lockup triggered by
      arm_smmu_mm_invalidate_range"
    - iommu/arm-smmu-v3: Fix soft lockup triggered by 
arm_smmu_mm_invalidate_range

  * Pull request: address GPIO initialization regression  on Grace systems
    (LP: #2053148)
    - NVIDIA: SAUCE: Revert "gpio: tegra186: Check GPIO pin permission before
      access."

 -- Ian May <ian....@canonical.com>  Thu, 15 Feb 2024 15:54:25 -0600

** Changed in: linux-nvidia-6.5 (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2048966

Title:
  Fix soft lockup triggered by arm_smmu_mm_invalidate_range

Status in linux-nvidia-6.5 package in Ubuntu:
  Fix Released

Bug description:
  [Problem]

  When running an SVA case, the following soft lockup is triggered:
      --------------------------------------------------------------------
      watchdog: BUG: soft lockup - CPU#244 stuck for 26s!
      pstate: 83400009 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
      pc : arm_smmu_cmdq_issue_cmdlist+0x178/0xa50
      lr : arm_smmu_cmdq_issue_cmdlist+0x150/0xa50
      sp : ffff8000d83ef290
      x29: ffff8000d83ef290 x28: 000000003b9aca00 x27: 0000000000000000
      x26: ffff8000d83ef3c0 x25: da86c0812194a0e8 x24: 0000000000000000
      x23: 0000000000000040 x22: ffff8000d83ef340 x21: ffff0000c63980c0
      x20: 0000000000000001 x19: ffff0000c6398080 x18: 0000000000000000
      x17: 0000000000000000 x16: 0000000000000000 x15: ffff3000b4a3bbb0
      x14: ffff3000b4a30888 x13: ffff3000b4a3cf60 x12: 0000000000000000
      x11: 0000000000000000 x10: 0000000000000000 x9 : ffffc08120e4d6bc
      x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000048cfa
      x5 : 0000000000000000 x4 : 0000000000000001 x3 : 000000000000000a
      x2 : 0000000080000000 x1 : 0000000000000000 x0 : 0000000000000001
      Call trace:
       arm_smmu_cmdq_issue_cmdlist+0x178/0xa50
       __arm_smmu_tlb_inv_range+0x118/0x254
       arm_smmu_tlb_inv_range_asid+0x6c/0x130
       arm_smmu_mm_invalidate_range+0xa0/0xa4
       __mmu_notifier_invalidate_range_end+0x88/0x120
       unmap_vmas+0x194/0x1e0
       unmap_region+0xb4/0x144
       do_mas_align_munmap+0x290/0x490
       do_mas_munmap+0xbc/0x124
       __vm_munmap+0xa8/0x19c
       __arm64_sys_munmap+0x28/0x50
       invoke_syscall+0x78/0x11c
       el0_svc_common.constprop.0+0x58/0x1c0
       do_el0_svc+0x34/0x60
       el0_svc+0x2c/0xd4
       el0t_64_sync_handler+0x114/0x140
       el0t_64_sync+0x1a4/0x1a8
      --------------------------------------------------------------------

  
  [Fix]

  backport the following upstream stable patch
  d5afb4b47e13161b3f33904d45110f9e6463bad6

  Link:
  https://lore.kernel.org/r/20230920052257.8615-1-nicol...@nvidia.com

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