https://bugzilla.novell.com/show_bug.cgi?id=394216 Summary: kexec cannot unload the kdump kernel Product: openSUSE 10.3 Version: Beta 1 Platform: PowerPC-64 OS/Version: All Status: NEW Severity: Major Priority: P5 - None Component: Kernel AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: bugproxy@us.ibm.com QAContact: kernel-maintainers@forge.provo.novell.com Found By: Third Party Developer/Partner Partner ID: LTC 41619 =Comment: #0================================================= Mohammed Omar <mohd.omar@in.ibm.com> - 2008-01-17 05:29 EDT ---Problem description:-- Kdump service not able to stop properly. It gives the message " Unloading kdumpkexec_load (0 segments) failed: Invalid argument failed" while running service kdump stop. --rpm used--- kexec-tools-1.101-139 ---service kdump restart--- service kdump restart Unloading kdumpkexec_load (0 segments) failed: Invalid argument failed Loading kdump get memory ranges:1 Modified cmdline:CRASH=1 root=/dev/sda6 quiet sysrq=1 xmon=off elevator=deadline sysrq=1 reset_devices 2 elfcorehdr=39888K savemaxmem=3840M segment[0].mem:0x2000000 memsz:7225344 segment[1].mem:0x26e4000 memsz:65536 segment[2].mem:0x26f4000 memsz:4096 segment[3].mem:0x26f5000 memsz:16384 segment[4].mem:0x26f9000 memsz:2441216 segment[5].mem:0xf710000 memsz:32768 done ----uname -a ------- Linux p55lp3 2.6.22.5-31-ppc64 #1 SMP 2007/09/21 22:29:00 UTC ppc64 ppc64 ppc64 GNU/Linux ------Hardware Environment--- Machine type : p55 Cpu type :power5 ---Is this reproducible?-- Yes -----More Information------- When I replace KEXEC variable in /etc/init.d/kdump to point kexec of kexec-tools-testing-20071017-rc.tar.gz, It works. It properly loads and unloads the kernel. =Comment: #1================================================= Mohammed Omar <mohd.omar@in.ibm.com> - 2008-01-17 08:50 EDT Latest kexec-tools rpm kexec-tools-1.101-150 from the factory also has this issue. --Regards Omar M =Comment: #4================================================= Mohammed Omar <mohd.omar@in.ibm.com> - 2008-02-18 08:44 EDT Sharyathi, OpenSUSE-11.0-Alpha2 doesn't have the kdump kernel in repo.Probably need to wait for another release. I picked up the factory kernel(2.6.24-8-ppc64) from the opensuse mirror, this version had kdump kernel, but after installing , it's version doesn't match the FIRST kernel.So decided to wait till next release. --uname -a----- Linux p55lp3 2.6.24-6-ppc64 #1 SMP 2008/01/31 14:27:52 UTC ppc64 ppc64 ppc64 GNU/Linux --Regards Omar =Comment: #17================================================= Nagesh Sharyathi <sharyathi@in.ibm.com> - 2008-05-21 04:21 EDT Hi This is what is I have understood till now, kexec tool calls kexec_load() system call as ==================== int k_unload (unsigned long kexec_flags) { int result; result = kexec_load(NULL, 0, NULL, kexec_flags); ===================== Where kexec flag is set to 0x1, ===================== In the kernel compat_sys_kernel() if ((flags & KEXEC_ARCH_MASK) == KEXEC_ARCH_DEFAULT) return -EINVAL; <== exits from here flags & Kexec_ARCH_MASK equals 0x0 and hence matches with KEXEC_ARCH_DEFAULT (0x0) and hence it exits with EINVAL. ===================== I need to understand what is the best way to fix the problem. Thanks Sharyathi =Comment: #19================================================= Nagesh Sharyathi <sharyathi@in.ibm.com> - 2008-05-23 07:39 EDT Fix to the problem I am attaching the fix to the problem. It has been mirrored to lkml and waiting on response. =Comment: #21================================================= Michael Ranweiler <mranweil@us.ibm.com> - 2008-05-23 16:34 EDT Patch to fix problem with service kdump start Hi Before debugging the problem I came to know service kdump start was not working. This patch is just a hack to make it work. Hope it helps Thanks Sharyathi -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.