> On 24-Feb-2024, at 12:33 AM, Aditya Gupta <adityag@xxxxxxxxxxxxx> wrote: > > Below error was noticed when running makedumpfile on linux-next kernel > crash (linux-next tag next-20240121): > > ... > Checking for memory holes : [100.0 %] | readpage_elf: Attempt to read non-existent page at 0xc000000000000. > [ 17.551718] kdump.sh[404]: readmem: type_addr: 0, addr:c00c000000000000, size:16384 > [ 17.551793] kdump.sh[404]: __exclude_unnecessary_pages: Can't read the buffer of struct page. > [ 17.551864] kdump.sh[404]: create_2nd_bitmap: Can't exclude unnecessary pages. > [ 17.562632] kdump.sh[404]: The kernel version is not supported. > [ 17.562708] kdump.sh[404]: The makedumpfile operation may be incomplete. > [ 17.562773] kdump.sh[404]: makedumpfile Failed. > [ 17.564335] kdump[406]: saving vmcore failed, _exitcode:1 > > Above error was due to 'vmap_area_list' and 'vmlist' symbols missing > from the vmcore. > > 'vmap_area_list' was removed in the linux kernel with below commit: > > commit 378eb24a0658dd922b29524e0ce35c6c43f56cba > mm/vmalloc: remove vmap_area_list > > Subsequently the commit also introduced 'VMALLOC_START' in vmcoreinfo to > get base address of vmalloc area, instead of depending on 'vmap_area_list' > > Hence if 'VMALLOC_START' symbol is there in vmcoreinfo: > 1. Set vmalloc_start based on 'VMALLOC_START' > 2. Don't error if vmap_area_list/vmlist are not defined > > Reported-by: Sachin Sant <sachinp@xxxxxxxxxxxxx> > Signed-off-by: Aditya Gupta <adityag@xxxxxxxxxxxxx> > --- Thanks Aditya for the fix. With this fix applied makedumpfile is able to save vmcore during kdump. Tested-by: Sachin Sant <sachinp@xxxxxxxxxxxxx> - Sachin _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
