[Crash-utility] [RFC] display function param and local value for backtrace

[Rabin Vincent]

2012/10/17 Dave Anderson <anderson at redhat.com>:
> BTW, what happens when you run it against a task that has taken a
> kernel-mode exception or kernel-mode interrupt?

The backtrace stops at the exception point:

crash> bt
PID: 0      TASK: c0998778  CPU: 0   COMMAND: "swapper"
 #0 [<c0320fb8>] (touch_softlockup_watchdog) from [<c0290030>]
 #1 [<c0290030>] (asm_do_IRQ) from [<c029124c>]
    pc : [<c02a1e60>]    lr : [<c02a1e5c>]    psr: 60000013
    sp : c0983f18  ip : 00000002  fp : 000021ce
    r10: a83a0af5  r9 : 0000289c  r8 : c09ead48
    r7 : 00000008  r6 : a7979c2b  r5 : 00000001  r4 : 00000003
    r3 : 00000000  r2 : 00000001  r1 : 80000093  r0 : c09ead8c
    Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM
 #2 [<c029124c>] (__irq_svc) from [<c02a1e5c>]
 #3 [<c02a1e60>] (cpuidle_enter) from [<c05dfa3c>]
 #4 [<c05dfa3c>] (cpuidle_idle_call) from [<c0292c98>]
 #5 [<c0292c98>] (cpu_idle) from [<c0008cb0>]
 #6 [<c0008cb0>] (start_kernel) from [<00008080>]
crash> gdb bt
#0  0xc0320fb8 in touch_softlockup_watchdog () at
/tmp/kernel/kernel/softlockup.c:77
#1  0xc0290030 in asm_do_IRQ (irq=80, regs=0x0) at
/tmp/kernel/arch/arm/kernel/irq.c:109
#2  0xc029124c in __irq_svc () at /tmp/kernel/arch/arm/kernel/entry-armv.S:229
Register 25 is not available
gdb: gdb request failed: bt