| Message ID | 20240901145025.2311-1-ice_yangxiao@163.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | mm/vma: Return the exact errno for vms_gather_munmap_vmas() | expand |
Thanks, but this is already fixed in v8 of my patches. * Xiao Yang <ice_yangxiao@163.com> [240901 10:51]: > can_modify_vma() in vms_gather_munmap_vmas() returns -EPERM if vma is > sealed so don't always return the fixed -ENOMEM on failure. > > Fixes: c2eb22189bbc ("mm/vma: inline munmap operation in mmap_region()") > Fixes: 5887a7ac2383 ("mm/vma: expand mmap_region() munmap call") > Signed-off-by: Xiao Yang <ice_yangxiao@163.com> > Reported-by: kernel test robot <oliver.sang@intel.com> > Closes: https://lore.kernel.org/oe-lkp/202408312155.fd26a58c-oliver.sang@intel.com > --- > mm/mmap.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/mm/mmap.c b/mm/mmap.c > index c1781f643046..c9a0dc035819 100644 > --- a/mm/mmap.c > +++ b/mm/mmap.c > @@ -1386,8 +1386,9 @@ unsigned long mmap_region(struct file *file, unsigned long addr, > mt_on_stack(mt_detach); > mas_init(&mas_detach, &mt_detach, /* addr = */ 0); > /* Prepare to unmap any existing mapping in the area */ > - if (vms_gather_munmap_vmas(&vms, &mas_detach)) > - return -ENOMEM; > + error = vms_gather_munmap_vmas(&vms, &mas_detach); > + if (error) > + return error; > > vmg.next = vms.next; > vmg.prev = vms.prev; > -- > 2.44.0 > >
Hi Liam R Thanks for your reply. Could you share the URL of your v8 patches. Best Regards, Xiao Yang At 2024-09-03 23:58:26, "Liam R. Howlett" <Liam.Howlett@oracle.com> wrote: > >Thanks, but this is already fixed in v8 of my patches. > >* Xiao Yang <ice_yangxiao@163.com> [240901 10:51]: >> can_modify_vma() in vms_gather_munmap_vmas() returns -EPERM if vma is >> sealed so don't always return the fixed -ENOMEM on failure. >> >> Fixes: c2eb22189bbc ("mm/vma: inline munmap operation in mmap_region()") >> Fixes: 5887a7ac2383 ("mm/vma: expand mmap_region() munmap call") >> Signed-off-by: Xiao Yang <ice_yangxiao@163.com> >> Reported-by: kernel test robot <oliver.sang@intel.com> >> Closes: https://lore.kernel.org/oe-lkp/202408312155.fd26a58c-oliver.sang@intel.com >> --- >> mm/mmap.c | 5 +++-- >> 1 file changed, 3 insertions(+), 2 deletions(-) >> >> diff --git a/mm/mmap.c b/mm/mmap.c >> index c1781f643046..c9a0dc035819 100644 >> --- a/mm/mmap.c >> +++ b/mm/mmap.c >> @@ -1386,8 +1386,9 @@ unsigned long mmap_region(struct file *file, unsigned long addr, >> mt_on_stack(mt_detach); >> mas_init(&mas_detach, &mt_detach, /* addr = */ 0); >> /* Prepare to unmap any existing mapping in the area */ >> - if (vms_gather_munmap_vmas(&vms, &mas_detach)) >> - return -ENOMEM; >> + error = vms_gather_munmap_vmas(&vms, &mas_detach); >> + if (error) >> + return error; >> >> vmg.next = vms.next; >> vmg.prev = vms.prev; >> -- >> 2.44.0 >> >>
diff --git a/mm/mmap.c b/mm/mmap.c index c1781f643046..c9a0dc035819 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1386,8 +1386,9 @@ unsigned long mmap_region(struct file *file, unsigned long addr, mt_on_stack(mt_detach); mas_init(&mas_detach, &mt_detach, /* addr = */ 0); /* Prepare to unmap any existing mapping in the area */ - if (vms_gather_munmap_vmas(&vms, &mas_detach)) - return -ENOMEM; + error = vms_gather_munmap_vmas(&vms, &mas_detach); + if (error) + return error; vmg.next = vms.next; vmg.prev = vms.prev;
can_modify_vma() in vms_gather_munmap_vmas() returns -EPERM if vma is sealed so don't always return the fixed -ENOMEM on failure. Fixes: c2eb22189bbc ("mm/vma: inline munmap operation in mmap_region()") Fixes: 5887a7ac2383 ("mm/vma: expand mmap_region() munmap call") Signed-off-by: Xiao Yang <ice_yangxiao@163.com> Reported-by: kernel test robot <oliver.sang@intel.com> Closes: https://lore.kernel.org/oe-lkp/202408312155.fd26a58c-oliver.sang@intel.com --- mm/mmap.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)