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| author | Rick Edgecombe <[email protected]> | 2023-09-08 20:36:54 +0000 |
|---|---|---|
| committer | Dave Hansen <[email protected]> | 2023-09-19 16:18:34 +0000 |
| commit | 748c90c693363d05c6b2f3915edc7999a2f71837 (patch) | |
| tree | 759d5dcfb0efdf41fdc30052a48ec555270ceca5 /tools/net/ynl/generated/netdev-user.c | |
| parent | x86/shstk: Handle vfork clone failure correctly (diff) | |
| download | kernel-748c90c693363d05c6b2f3915edc7999a2f71837.tar.gz kernel-748c90c693363d05c6b2f3915edc7999a2f71837.zip | |
x86/shstk: Remove useless clone error handling
When clone fails after the shadow stack is allocated, any allocated shadow
stack is cleaned up in exit_thread() in copy_process(). So the logic in
copy_thread() is unneeded, and also will not handle failures that happen
outside of copy_thread().
In addition, since there is a second attempt to unmap the same shadow
stack, there is a race where an newly mapped region could get unmapped.
So remove the logic in copy_thread() and rely on exit_thread() to handle
clone failure.
Fixes: b2926a36b97a ("x86/shstk: Handle thread shadow stack")
Signed-off-by: Rick Edgecombe <[email protected]>
Signed-off-by: Dave Hansen <[email protected]>
Tested-by: H.J. Lu <[email protected]>
Link: https://lore.kernel.org/all/20230908203655.543765-3-rick.p.edgecombe%40intel.com
Diffstat (limited to 'tools/net/ynl/generated/netdev-user.c')
0 files changed, 0 insertions, 0 deletions