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um: Use correct data source in fpregs_legacy_set()

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Read from the buffer pointed to by 'from' instead of '&buf', as
'buf' contains no valid data when 'ubuf' is NULL.

Fixes: b1e1bd2e69 ("um: Add helper functions to get/set state for SECCOMP")
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20250606124428.148164-5-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Tiwei Bie 2025-06-06 20:44:28 +08:00 committed by Johannes Berg
parent bc4e2ae081
commit 8948941276
1 changed files with 1 additions and 1 deletions
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2
arch/x86/um/ptrace.c
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@ -161,7 +161,7 @@ static int fpregs_legacy_set(struct task_struct *target,
from = kbuf;
}
return um_fxsr_from_i387(fxsave, &buf);
return um_fxsr_from_i387(fxsave, from);
}
#endif