Re: [BUG] Bad page map in process ibv_devinfo

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David Miller <davem@xxxxxxxxxxxxx> wrote:

> Can someone with the effected hardware please test this?
> 
> --------------------
> [PATCH] sparc: Kill custom io_remap_pfn_range().
> 
> To handle the large physical addresses, just make a simple wrapper
> around remap_pfn_range() like MIPS does.
> 
> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
> ---
> arch/sparc/include/asm/pgtable_32.h |   20 ++++-
> arch/sparc/include/asm/pgtable_64.h |   20 ++++-
> arch/sparc/mm/Makefile              |    1 -
> arch/sparc/mm/generic_32.c          |   99 ---------------------
> arch/sparc/mm/generic_64.c          |  165 -----------------------------------
> 5 files changed, 32 insertions(+), 273 deletions(-)
> delete mode 100644 arch/sparc/mm/generic_32.c
> delete mode 100644 arch/sparc/mm/generic_64.c
> 

Hello David!

After applying your patch I still get the errors:
[ 1117.556582] swap_free: Bad swap file entry 100004e000061800
[ 1117.556710] BUG: Bad page map in process ibv_devinfo  pte:9c0000c300104608 pmd:00f882d0
[ 1117.556827] addr:fffff80100114000 vm_flags:400844fa anon_vma:          (null) mapping:fffff807f623a410 index:6180082
[ 1117.557007] vma->vm_file->f_op->mmap: ib_uverbs_mmap+0x8/0x38 [ib_uverbs]
[ 1117.557054] Call Trace:
[ 1117.557093]  [00000000004ccff8] unmap_vmas+0x514/0x7f4
[ 1117.557143]  [00000000004d0d14] unmap_region+0xb4/0x164
[ 1117.557192]  [00000000004d1d60] do_munmap+0x2a8/0x31c
[ 1117.557247]  [000000000042d340] SyS_64_munmap+0x88/0xa8
[ 1117.557302]  [0000000000406154] linux_sparc_syscall+0x34/0x44
[ 1117.557347] Disabling lock debugging due to kernel taint


Regards,
Lukas
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