fbcon: check return value of con2fb_acquire_newinfo()

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[ Upstream commit 011a050280 ]

If fbcon_open() fails when called from con2fb_acquire_newinfo() then
info->fbcon_par pointer remains NULL which is later dereferenced.

Add check for return value of the function con2fb_acquire_newinfo() to
avoid it.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: d1baa4ffa6 ("fbcon: set_con2fb_map fixes")
Cc: stable@vger.kernel.org
Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Andrey Vatoropin 2025-12-17 09:11:05 +00:00 • committed by Sasha Levin

parent e93d898ee9

commit 0b038c0be6

1 changed files with 2 additions and 1 deletions

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drivers/video/fbdev/core/fbcon.c

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