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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2023-07-25 02:03:29 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-07-26 01:29:01 +0300 |
| commit | 9f9116406120638b4d8db3831ffbc430dd2e1e95 (patch) | |
| tree | 4cdd0de09f66d3a7f24334c606eb2791288152ee /fs/overlayfs/super.c | |
| parent | 0b4a9fdc9317440a71d4d4c264a5650bf4a90f3c (diff) | |
| download | linux-9f9116406120638b4d8db3831ffbc430dd2e1e95.tar.xz | |
x86/traps: Fix load_unaligned_zeropad() handling for shared TDX memory
Commit c4e34dd99f2e ("x86: simplify load_unaligned_zeropad()
implementation") changes how exceptions around load_unaligned_zeropad()
handled. The kernel now uses the fault_address in fixup_exception() to
verify the address calculations for the load_unaligned_zeropad().
It works fine for #PF, but breaks on #VE since no fault address is
passed down to fixup_exception().
Propagating ve_info.gla down to fixup_exception() resolves the issue.
See commit 1e7769653b06 ("x86/tdx: Handle load_unaligned_zeropad()
page-cross to a shared page") for more context.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Michael Kelley <mikelley@microsoft.com>
Fixes: c4e34dd99f2e ("x86: simplify load_unaligned_zeropad() implementation")
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/overlayfs/super.c')
0 files changed, 0 insertions, 0 deletions