[...]
ata3: SATA link down (SStatus 0 SControl 0)
       _______________________________
      < Your System ate a SPARC! Gah! >
       -------------------------------
              \   ^__^
                  (__)\       )\/\
                   U  ||----w |
                      ||     ||
swapper/0 (pid 0): Illegal instruction (code 8)
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.18.3+ #1
Hardware name: 9000/785/C8000

      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00001000000001000001101100001110 Not tainted
r00-03  0000000008041b0e 000000004e8045b0 0000000010bbda78 000000004e804470
r04-07  0000000010bb5000 0000000000001440 0000000054355000 0000000000001400
r08-11  0000000055000000 000000000000000e 000000000000000f 0000000055002800
r12-15  0000000000000000 0000000055002800 0000000040b668c0 0000000040b668c0
r16-19  0000000000000001 0000000000000001 0000000051b799f0 0000000000000000
r20-23  0000000000000001 fffffffffffff5b9 0000000000000000 0000000000200000
r24-27  000000000000000c 000000000800000e 0000000054355144 0000000040b3e0c0
r28-31  0000000000010001 000000004e804620 000000004e8045b0 0000000040edd040
sr00-03  00000000000a5c00 0000000000000000 0000000000000000 00000000000a5c00
sr04-07  0000000000000000 0000000000000000 0000000000000000 0000000000000000

IASQ: 0000000000000000 0000000000000000 IAOQ: 0000000010bbd9e0 0000000010bbd9e4
  IIR: 006110c2    ISR: 0000000010240000  IOR: 00000003b76dd048
  CPU:        0   CR30: 0000000040edd040 CR31: ffffffffffffffff
  ORIG_R28: 0000000000000000
  IAOQ[0]: mpt_reply+0x130/0x4f0 [mptbase]
  IAOQ[1]: mpt_reply+0x134/0x4f0 [mptbase]
  RP(r2): mpt_reply+0x1c8/0x4f0 [mptbase]
Backtrace:
  [<0000000010bbde24>] mpt_interrupt+0x84/0xe8 [mptbase]
  [<000000004026dd64>] __handle_irq_event_percpu+0xc4/0x250
  [<000000004026df28>] handle_irq_event_percpu+0x38/0xd8
  [<00000000402776c4>] handle_percpu_irq+0xb4/0xf0
  [<000000004026c90c>] generic_handle_irq+0x5c/0x90
  [<00000000401a20e4>] call_on_stack+0x18/0x24

CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.18.3+ #1
Hardware name: 9000/785/C8000
Backtrace:
  [<00000000401a8cd8>] show_stack+0x70/0x90
  [<0000000040a8e238>] dump_stack_lvl+0xd8/0x128
  [<0000000040a8e2bc>] dump_stack+0x34/0x48
  [<00000000401a8efc>] die_if_kernel+0x1e4/0x3f8
  [<00000000401a9af4>] handle_interruption+0x59c/0xb58
  [<00000000401a107c>] intr_check_sig+0x0/0x3c

Kernel panic - not syncing: Fatal exception in interrupt

v5.18.2 with similar config is okay.  The fault seems consistent. IIR contains illegal instruction.

Attached config.

Dave

-- 
John David Anglin  dave.anglin@bell.net