8.0.5 on v6.11-6.12: crash: seek error: kernel virtual address: ffffffff825e15a8 type: "page_offset_base"

[vt-alt]

Current release of crash 8.0.5 does not even run with Linux v6.11 and v6.12-rc4. (Didn't test 6.10).

6.12.0-6.12-alt0.rc4.1:~# crash -d 9
...
readmem: read_dev_mem() -> /dev/mem
crash: pv_ops exists: ARCH_PVOPS
VMCOREINFO: NUMBER(phys_base): 1476395008 -> 58000000
gdb /usr/lib/debug/lib/modules/6.12.0-6.12-alt0.rc4.1/vmlinux
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GETBUF(344 -> 0)
  GETBUF(1500 -> 1)

  FREEBUF(1)
FREEBUF(0)
<readmem: ffffffff825e15a8, KVADDR, "page_offset_base", 8, (FOE|Q), 560639ff3468>
<read_dev_mem: addr: ffffffff825e15a8 paddr: 5a5e15a8 cnt: 8>
/dev/mem: Operation not permitted
crash: read(/dev/mem, 5a5e15a8, 8): 4294967295 (ffffffff)
crash: read error: kernel virtual address: ffffffff825e15a8  type: "page_offset_base"
<readmem: ff000, PHYSADDR, "devmem_is_allowed - pfn 255", 8, (ROE|Q|NDS), 7fffc20edee8>
<read_dev_mem: addr: ff000 paddr: ff000 cnt: 8>
<readmem: 101000, PHYSADDR, "devmem_is_allowed - pfn 257", 8, (ROE|Q|NDS), 7fffc20edee8>
<read_dev_mem: addr: 101000 paddr: 101000 cnt: 8>
/dev/mem: Operation not permitted
crash: read(/dev/mem, 101000, 8): 4294967295 (ffffffff)
crash: read error: physical address: 101000  type: "devmem_is_allowed - pfn 257"
<readmem: ffffffff82c079c0, KVADDR, "devmem_is_allowed - jiffies", 8, (ROE|Q|NDS), 7fffc20edee8>
<read_dev_mem: addr: ffffffff82c079c0 paddr: 5ac079c0 cnt: 8>
/dev/mem: Operation not permitted
crash: read(/dev/mem, 5ac079c0, 8): 4294967295 (ffffffff)
crash: read error: kernel virtual address: ffffffff82c079c0  type: "devmem_is_allowed - jiffies"
crash: this kernel may be configured with CONFIG_STRICT_DEVMEM, which
       renders /dev/mem unusable as a live memory source.
crash: trying /proc/kcore as an alternative to /dev/mem

<readmem: ffffffff825e15a8, KVADDR, "page_offset_base", 8, (FOE), 560639ff3468>
<read_proc_kcore: addr: ffffffff825e15a8 paddr: 5a5e15a8 cnt: 8>
crash: seek error: kernel virtual address: ffffffff825e15a8  type: "page_offset_base"
6.12.0-6.12-alt0.rc4.1:~# 

While master branch works well. My (wild) guess is that commit 3879e91 (from 2024-05-20) fixed this.

Can you please release more frequently when such major breakage with new Linux releases occur?