[Bug runtime/21726] on rawhide, the backtrace.exp test case causes a kernel panic

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=21726

--- Comment #2 from Mark Wielaard <mark at klomp dot org> ---
Disassembly was of the wrong part. It should be around:

[  318.821928] RIP: 0010:_stp_stack_kernel_get+0x550/0x680 [stap_1014] 

364                     return 0; /* unwind does not reach this far */
   0x0000000000004a8c <+508>:   xor    %r15d,%r15d
   0x0000000000004a8f <+511>:   jmp    0x4a33 <_stp_stack_kernel_get+419>

353                     printk(KERN_ERR "%s:%d depth >= MAXBACKTRACE, returning
0\n", __FUNCTION__, __LINE__);
   0x0000000000004a91 <+513>:   mov    $0x161,%edx
   0x0000000000004a96 <+518>:   mov    $0x0,%rsi
   0x0000000000004a9d <+525>:   mov    $0x0,%rdi
   0x0000000000004aa4 <+532>:   callq  0x4aa9 <_stp_stack_kernel_get+537>

354                     return 0;
   0x0000000000004aa9 <+537>:   xor    %r15d,%r15d
   0x0000000000004aac <+540>:   jmp    0x4a33 <_stp_stack_kernel_get+419>

307             regs = c->kregs;
   0x0000000000004aae <+542>:   mov    0x238(%rbx),%rax

310     
311             dbug_unwind(1, "CONTINUING kernel unwind to depth %d\n",
depth);
   0x0000000000004ab5 <+549>:   mov    $0x137,%edx
   0x0000000000004aba <+554>:   mov    $0x0,%rsi
   0x0000000000004ac1 <+561>:   mov    $0x0,%rdi
   0x0000000000004ac8 <+568>:   mov    %r11,-0x50(%rbp)

307             regs = c->kregs;
   0x0000000000004acc <+572>:   mov    %rax,-0x48(%rbp)

308     
309             info = &c->uwcontext_kernel.info;
   0x0000000000004ad0 <+576>:   lea    0xa40(%rbx),%rax
   0x0000000000004ad7 <+583>:   mov    %rax,-0x58(%rbp)

310

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