x86/hyperv: Fix error pointer dereference

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[ Upstream commit 705d01c8d7 ]

The function idle_thread_get() can return an error pointer and is not
checked for it. Add check for error pointer.

Detected by Smatch:
arch/x86/hyperv/hv_vtl.c:126 hv_vtl_bringup_vcpu() error:
'idle' dereferencing possible ERR_PTR()

Fixes: 2b4b90e053 ("x86/hyperv: Use per cpu initial stack for vtl context")
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Ethan Tidmore 2026-02-18 13:09:03 -06:00 • committed by Greg Kroah-Hartman

parent d7cf2314dd

commit 7e92f716a5

1 changed files with 5 additions and 3 deletions

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arch/x86/hyperv/hv_vtl.c

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