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    <p>Greetings,</p>
    <p>[linux-next] [6.6.0-rc3-next-20230929] [git bisect ->
      2ad56efa80dba89162106c06ebc00b611325e584]WARNING: CPU: 0 PID: 8 at
      arch/powerpc/kernel/<a class="moz-txt-link-freetext" href="iommu.c:407">iommu.c:407</a> __iommu_free+0x1e4/0x1f0</p>
    <p>--- Traces ---</p>
    <p>[   62.578338] WARNING: CPU: 0 PID: 8 at
      arch/powerpc/kernel/<a class="moz-txt-link-freetext" href="iommu.c:407">iommu.c:407</a> __iommu_free+0x1e4/0x1f0<br>
      [   62.578345] Modules linked in: sd_mod t10_pi crc64_rocksoft
      crc64 sg ibmvfc mlx5_core(+) scsi_transport_fc ibmveth mlxfw
      psample dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse<br>
      [   62.578362] CPU: 0 PID: 8 Comm: kworker/0:0 Not tainted
      6.6.0-rc3-next-20230929-auto #1<br>
      [   62.578366] Hardware name: IBM,9080-HEX POWER10 (raw) 0x800200
      0xf000006 <a class="moz-txt-link-freetext" href="of:IBM,FW1030.30">of:IBM,FW1030.30</a> (NH1030_062) <a class="moz-txt-link-freetext" href="hv:phyp">hv:phyp</a> pSeries<br>
      [   62.578369] Workqueue: events work_for_cpu_fn<br>
      [   62.578374] NIP:  c00000000005f6d4 LR: c00000000005f6d0 CTR:
      00000000005ca81c<br>
      [   62.578377] REGS: c000000003a27890 TRAP: 0700   Not tainted 
      (6.6.0-rc3-next-20230929-auto)<br>
      [   62.578381] MSR:  800000000282b033
      <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE>  CR: 48000824  XER:
      00000008<br>
      [   62.578391] CFAR: c00000000020f738 IRQMASK: 0 <br>
      [   62.578391] GPR00: c00000000005f6d0 c000000003a27b30
      c000000001481800 0000000000000017 <br>
      [   62.578391] GPR04: 00000000ffff7fff c000000003a27950
      c000000003a27948 0000000000000027 <br>
      [   62.578391] GPR08: c000000c18c07c10 0000000000000001
      0000000000000027 c000000002ac8a08 <br>
      [   62.578391] GPR12: 0000000000000000 c000000002ff0000
      c00000000019cc88 c000000003042300 <br>
      [   62.578391] GPR16: 0000000000000000 0000000000000000
      0000000000000000 c000000003071ab0 <br>
      [   62.578391] GPR20: c00000000349f80d c000000003215440
      c000000003215480 61c8864680b583eb <br>
      [   62.578391] GPR24: 0000000000000000 000000007fffffff
      0800000020000000 0000000000000010 <br>
      [   62.578391] GPR28: 0000000000020000 0000800000020000
      c00000000c5dc800 c00000000c5dc880 <br>
      [   62.578428] NIP [c00000000005f6d4] __iommu_free+0x1e4/0x1f0<br>
      [   62.578432] LR [c00000000005f6d0] __iommu_free+0x1e0/0x1f0<br>
      [   62.578435] Call Trace:<br>
      [   62.578437] [c000000003a27b30] [c00000000005f6d0]
      __iommu_free+0x1e0/0x1f0 (unreliable)<br>
      [   62.578442] [c000000003a27bc0] [c00000000005f848]
      iommu_free+0x28/0x70<br>
      [   62.578446] [c000000003a27bf0] [c000000000061518]
      iommu_free_coherent+0x68/0xa0<br>
      [   62.578450] [c000000003a27c20] [c00000000005e8d4]
      dma_iommu_free_coherent+0x24/0x40<br>
      [   62.578455] [c000000003a27c40] [c00000000024698c]
      dma_free_attrs+0x10c/0x140<br>
      [   62.578459] [c000000003a27c90] [c008000000dcb8d4]
      mlx5_cmd_cleanup+0x5c/0x90 [mlx5_core]<br>
      [   62.578512] [c000000003a27cc0] [c008000000dc45a0]
      mlx5_mdev_uninit+0xc8/0x100 [mlx5_core]<br>
      [   62.578558] [c000000003a27d00] [c008000000dc4ac4]
      probe_one+0x3ec/0x530 [mlx5_core]<br>
      [   62.578602] [c000000003a27d90] [c0000000008c5edc]
      local_pci_probe+0x6c/0x110<br>
      [   62.578607] [c000000003a27e10] [c000000000189c98]
      work_for_cpu_fn+0x38/0x60<br>
      [   62.578612] [c000000003a27e40] [c00000000018d1d0]
      process_scheduled_works+0x230/0x4f0<br>
      [   62.578616] [c000000003a27f10] [c00000000018ff14]
      worker_thread+0x1e4/0x500<br>
      [   62.578619] [c000000003a27f90] [c00000000019cdb8]
      kthread+0x138/0x140<br>
      [   62.578624] [c000000003a27fe0] [c00000000000df98]
      start_kernel_thread+0x14/0x18<br>
      [   62.578628] Code: 481b004d 60000000 e89e0028 3c62ffe0 3863dd20
      481b0039 60000000 e89e0038 3c62ffe0 3863dd38 481b0025 60000000
      <0fe00000> 4bffff20 60000000 3c4c0142 <br>
      [   62.578640] ---[ end trace 0000000000000000 ]---<br>
      [   62.578646] iommu_free: invalid entry<br>
      [   62.578649]     entry     = 0x8000000203d0<br>
      [   62.578650]     dma_addr  = 0x8000000203d0000<br>
      [   62.578652]     Table     = 0xc00000000c5dc800<br>
      [   62.578654]     bus#      = 0x1<br>
      [   62.578655]     size      = 0x20000<br>
      [   62.578657]     startOff  = 0x800000000000<br>
      [   62.578658]     index     = 0x70200016<br>
      [   62.578660] ------------[ cut here ]------------<br>
      <br class="Apple-interchange-newline">
    </p>
    <p>gitbisect is pointing to the below commit</p>
    <p>commit 2ad56efa80dba89162106c06ebc00b611325e584<br>
      Author: Jason Gunthorpe <a class="moz-txt-link-rfc2396E" href="mailto:jgg@nvidia.com"><jgg@nvidia.com></a><br>
      Date:   Wed Sep 13 10:43:36 2023 -0300<br>
      <br>
          powerpc/iommu: Setup a default domain and remove
      set_platform_dma_ops<br>
      <br>
    </p>
    <p></p>
    <pre class="moz-signature" cols="72">-- 
Regards,
Tasmiya Nalatwad
IBM Linux Technology Center</pre>
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