Created attachment 204 [details] Multilib kernel panic After successfully built out lib64-core-image-sato image and try to launch it in QEmu, we met kernel panic. See attached picture for detailed info.
CC Ke and Lianhao
This issue should be related with prelink. I tried to remove the line in image-prelink.bbclass: IMAGE_PREPROCESS_COMMAND += "prelink_image; " and then redo the rootfs, image could boot up successfully. Mark, do you have any idea on that? Thanks, Dongxiao
in your local.conf search for: USER_CLASSES ?= "image-mklibs image-prelink" Remove image prelink. Does the system boot? If it doesn, what is your machine configuration, I need to know what the target is to understand what might be going wrong. I am currently working on a prelink problem that affects PPC64 userspace, but it's possible it affects more then just PPC64.
Created attachment 208 [details] prelink log
Yes, target system could boot successfully if remove the "image-prelink" in USER_CLASSES. My target machine is qemux86-64. Some more findings on my side: I added some debug info and enabled the verbose output of prelink, there are some error information reporting "undefined symbol", see attached file. These undefined symbol (memset, strcpy, etc) belong to libc.so.6, and I checked it with objdump. There do exist such functions.
Hi Mark, I just built a normal core-image-sato (non-multilib) image of qemux86-64 with baselib set to "lib64", it also met kernel panic when boot. You said you were trying to solve a ppc64 prelink issue. I saw in bitbake.conf, only ppc64's baselib is set to "lib64". Therefore this bug may also related with that. Thanks, Dongxiao
In prelink package, there is one tool named prelink-rtld which is somewhat similar with ldd. Running prelink-rtld with format like: RTLD_TRACE_PRELINKING=/usr/lib64/libfreetype.so.6 PRELINK_SYSROOT=/distro/dongxiao/build-lib/tmp/work/qemux86_64-poky-linux/core-image-sato-1.0-r0/rootfs /distro/dongxiao/build-lib/tmp/work/x86_64-linux/prelink-native-1.0+git1+ac461e73b17253a4da25c5aafeac7193b553156c-r5/git/trunk/src//prelink-rtld --target-paths "/usr/lib64/libfreetype.so.6" The above command will report errors like: ... lookup 0x00000000dead0000 0x0000000000002a78 -> 0x00000000dead0000 0x0000000000014250 /1 FT_GlyphLoader_CheckSubGlyphs lookup 0x00000000dead0000 0x0000000000003108 -> 0x00000000dead0000 0x0000000000012df0 /1 FT_Stream_GetUShortLE lookup 0x00000000dead0000 0x00000000000026e8 -> 0x00000000dead0000 0x000000000001e4a0 /1 FT_Stroker_Export lookup 0x00000000dead0000 0x00000000000020b8 -> 0x00000000dead0000 0x0000000000010220 /1 ft_corner_orientation undefined symbol: strcmp (/usr/lib64/libfreetype.so.6) lookup 0x00000000dead0000 0x00000000000021d8 -> 0x00000000dead0000 0x0000000000011c10 /1 FT_Get_Module_Interface lookup 0x00000000dead0000 0x0000000000002a60 -> 0x00000000dead0000 0x000000000001b040 /1 FT_Glyph_Copy lookup 0x00000000dead0000 0x0000000000003540 -> 0x00000000dead0000 0x0000000000014f60 /1 FT_Outline_New_Internal lookup 0x00000000dead0000 0x0000000000002748 -> 0x00000000dead0000 0x000000000001ac90 /1 FT_Done_Glyph lookup 0x00000000dead0000 0x0000000000002fe8 -> 0x00000000dead0000 0x00000000000145e0 /1 FT_GlyphLoader_CreateExtra lookup 0x00000000dead0000 0x0000000000001db8 -> 0x00000000dead0000 0x00000000000150b0 /1 FT_New_Library lookup 0x00000000dead0000 0x0000000000003048 -> 0x00000000dead0000 0x0000000000015740 /1 ft_glyphslot_alloc_bitmap lookup 0x00000000dead0000 0x00000000000029a0 -> 0x00000000dead0000 0x000000000000fb80 /1 FT_MulDiv_No_Round lookup 0x00000000dead0000 0x00000000000014d0 -> 0x00000000dead1000 0x0000003e13234640 /1 longjmp lookup 0x00000000dead0000 0x0000000000002bc8 -> 0x00000000dead0000 0x0000000000014e80 /1 FT_Outline_Done_Internal lookup 0x00000000dead0000 0x00000000000031e0 -> 0x00000000dead0000 0x000000000001e010 /1 FT_Stroker_BeginSubPath lookup 0x00000000dead0000 0x0000000000001b90 -> 0x00000000dead0000 0x000000000001ab80 /1 FT_Glyph_Transform lookup 0x00000000dead0000 0x00000000000035b8 -> 0x00000000dead0000 0x00000000000127a0 /1 FT_Outline_Get_Orientation undefined symbol: memcmp (/usr/lib64/libfreetype.so.6) lookup 0x00000000dead0000 0x0000000000001500 -> 0x00000000dead1000 0x0000003e132d02a0 /1 munmap lookup 0x00000000dead0000 0x0000000000001c50 -> 0x00000000dead0000 0x000000000005e240 /1 FTC_ImageCache_New lookup 0x00000000dead0000 0x0000000000002c70 -> 0x00000000dead0000 0x0000000000062970 /1 ft_lzwstate_done lookup 0x00000000dead0000 0x0000000000002e80 -> 0x00000000dead0000 0x0000000000011210 /1 FT_Get_Char_Index lookup 0x00000000dead0000 0x0000000000001a88 -> 0x00000000dead0000 0x0000000000010530 /1 ft_validator_error lookup 0x00000000dead0000 0x00000000000032b8 -> 0x00000000dead0000 0x0000000000016150 /1 ft_mem_strcpyn undefined symbol: strncpy (/usr/lib64/libfreetype.so.6) lookup 0x00000000dead0000 0x0000000000003420 -> 0x00000000dead0000 0x0000000000013580 /1 FT_Stream_ReadULongLE lookup 0x00000000dead0000 0x00000000000034e0 -> 0x00000000dead0000 0x0000000000012520 /1 FT_Outline_Get_CBox lookup 0x00000000dead0000 0x00000000000017d0 -> 0x00000000dead0000 0x0000000000012da0 /1 FT_Stream_GetChar ... GDB into the code will find the error is happened in the FCT() function, which is a inner part of the lookup functions. This code is derived from old glibc. I wonder if updating it to latest glibc/eglibc will help. bug 1331 might be similar with this one. Thanks, Dongxiao
Fantastic thing is that, using Mark's prelink-cross WIP tree (http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=mhatle/cross_prelink) which synched prelink element with latest eglibc, this issue gone away. So the root cause should be related with the old "symbol search" code in prelink. Thanks Mark!
Hi Mark, Could you help to mark the bug as fixed then I can verify it. Thanks, Dongxiao
New version was checked in. This particular issue is resolved. Note, BUG 1473 has been discovered recently and may impact testing.
Verified against latest master.