https://bugzilla.suse.com/show_bug.cgi?id=1185232 https://bugzilla.suse.com/show_bug.cgi?id=1185232#c74 --- Comment #74 from Gary Ching-Pang Lin <glin@suse.com> --- I probably found the root cause for comment#0. When tracking a crash in aarch64, I found that a part of Fat driver memory was overwritten with a series of 0s. Fortunately, I added a few more debug messages to the AArch64 firmware and narrowed down the problem to these 2 sections of shim code: 1) https://github.com/rhboot/shim/blob/shim-15.4/mok.c#L988-L991 2) https://github.com/rhboot/shim/blob/shim-15.4/mok.c#L1017-L1041 The code 1) calculates the size of the config table for MOK variables and the code 2) copies the content of MOK variables into the config table. However, the code 1) skips the empty variables but the code 2) adds the table templates for the empty variables, so the code 2) copies more data than the allocated space. The end of the table list is a zeroed 264 bytes array, and I guess the extra part of the table overwrote the existing EFI Loaded Image handle, so HandleProtocol returned "Invalid Parameter". -- You are receiving this mail because: You are on the CC list for the bug.