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- Prevent NULL dereference on theoretical missing IO bitmap

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(Li RongQing)
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2026-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Ingo Molnar:

 - Prevent NULL dereference on theoretical missing IO bitmap (Li
   RongQing)

* tag 'x86-urgent-2026-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ioperm: Prevent NULL dereference on theoretical missing IO bitmap
This commit is contained in:
Linus Torvalds 2026-06-23 17:16:31 -07:00
commit bade58eb06
1 changed files with 1 additions and 0 deletions
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1
arch/x86/kernel/process.c
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@ -486,6 +486,7 @@ void native_tss_update_io_bitmap(void)
if (WARN_ON_ONCE(!iobm)) {
clear_thread_flag(TIF_IO_BITMAP);
native_tss_invalidate_io_bitmap();
return;
}
/*