[Crash-utility] [PATCH 11/11] bt: Display register set in ELF note on kdump-compressed format generated from sadump format

Now we're developping the feature of makedumpfile producing vmcore in kdump-compressed format from sadump-related formats. The vmcores generated from the sadump-related formats have register set collected by sadump as ELF note, meaning that the registers could be the values collected during execution in kernel text or user space; of course, they could also be broken just as register set collected by kdump for non-panic tasks. Currently, on sadump-related formats, bt command displays register set at top level, but doesn't on kdump-compressed format. This patch changes the logic on kdump-compressed format so that bt displays the register set in the same way as on sadump-related formats. If they are not useful--that is, they don't belong to neither kernel text nor user space--, the current logic remains. Example: [Before] crash> bt PID: 0 TASK: ffffffff80314b60 CPU: 0 COMMAND: "swapper" #0 [ffffffff8045bf88] mwait_idle at ffffffff80056ca4 #1 [ffffffff8045bf90] cpu_idle at ffffffff80048fc5 [After] crash> bt PID: 0 TASK: ffffffff80314b60 CPU: 0 COMMAND: "swapper" [exception RIP: mwait_idle_with_hints+102] RIP: ffffffff8006b9bf RSP: ffffffff8045bf88 RFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff80056c98 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 000000000008fc00 R8: ffffffff8045a000 R9: ffff81047e4f6340 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000018 R13: 0000000000000018 R14: 0000000000000018 R15: 0000000076c18a58 CS: 0010 SS: 0018 #0 [ffffffff8045bf88] mwait_idle at ffffffff80056ca4 #1 [ffffffff8045bf90] cpu_idle at ffffffff80048fc5 Signed-off-by: HATAYAMA Daisuke <d.hatayama(a)jp.fujitsu.com&gt; --- netdump.c | 17 +++++++++++++++++ x86.c | 2 ++ x86_64.c | 6 +++++- 3 files changed, 24 insertions(+), 1 deletions(-)