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Shigeru Yoshida
a5a923038d
fbcon_do_set_font() calls vc_resize() when font size is changed. However, if if vc_resize() failed, current implementation doesn't revert changes for font size, and this causes inconsistent state. syzbot reported unable to handle page fault due to this issue [1]. syzbot's repro uses fault injection which cause failure for memory allocation, so vc_resize() failed. This patch fixes this issue by properly revert changes for font related date when vc_resize() failed. Link: https://syzkaller.appspot.com/bug?id=3443d3a1fa6d964dd7310a0cb1696d165a3e07c4 [1] Reported-by: [email protected] Signed-off-by: Shigeru Yoshida <[email protected]> Signed-off-by: Helge Deller <[email protected]> CC: [email protected] # 5.15+