I just found out my C8000 rebootet, this is the log: [33718.498892] Unaligned handler failed, ret = -2 [33718.558778] _______________________________ 33718.558778] < Your System ate a SPARC! Gah! > 33718.558778] ------------------------------- 33718.558778] \ ^__^ 33718.558778] (__)\ )\/\ 33718.558778] U ||----w | 33718.558778] || || [33718.950785] f951 (pid 921): Unaligned data reference (code 28) [33719.026783] CPU: 2 PID: 921 Comm: f951 Not tainted 5.7.1-gentoo-parisc64 #1 [33719.118767] Hardware name: 9000/785/C8000 [33719.174768] [33719.194765] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI [33719.254776] PSW: 00001000000000010000000000001000 Not tainted [33719.330834] r00-03 0000000008010008 fffffff0f0e37000 fffffff0f0d75858 0000000000000000 [33719.438772] r04-07 fffffff0f0407580 fffffff0f0407180 fffffffffffffff9 0000000000000000 [33719.542780] r08-11 0000000000000001 8400000000800000 fffffff0f040c3c0 8400000000800000 [33719.646768] r12-15 0000000000000000 00000000f952860c 00000000f9528608 00000000f95283e0 [33719.754769] r16-19 00000000f95285a0 00000000f95283e4 00000000f95283b8 0000000000000000 [33719.858777] r20-23 0000000000003d60 00000000000001ea 0000000000000000 0000000000000000 [33719.966768] r24-27 fffffff0f0407a2c 0000000000000000 fffffff0f0e93508 fffffff0f0400000 [33720.070769] r28-31 fffffff0f0438e70 fffffff0f0407580 fffffff0f0407680 636e746c696e6974 [33720.174777] sr00-03 0000000006b76800 0000000000000000 0000000000000000 0000000006b76800 [33720.282768] sr04-07 0000000006b76800 0000000006b76800 0000000006b76800 0000000006b76800 [33720.390766] [33720.410766] IASQ: 000000003ffffff0 000000003ffffff0 IAOQ: fffffff0f0d597d4 fffffff0f0d597d8 [33720.518776] IIR: 52730240 ISR: 000000003ffff800 IOR: c00007f0f0407b4c [33720.610769] CPU: 2 CR30: 0000000168d1c000 CR31: ffffffffffffffff [33720.702765] ORIG_R28: 0000000000000000 [33720.750773] IAOQ[0]: 0xfffffff0f0d597d4 [33720.802795] IAOQ[1]: 0xfffffff0f0d597d8 [33720.854768] RP(r2): 0xfffffff0f0d75858 [33720.906765] Backtrace: [33720.938779] [33720.958771] CPU: 2 PID: 921 Comm: f951 Not tainted 5.7.1-gentoo-parisc64 #1 [33720.962755] Hardware name: 9000/785/C8000 [33720.962755] Backtrace: [33720.962755] [<0000000040188c3c>] show_stack+0x5c/0x70 [33720.962755] [<00000000405778e4>] dump_stack+0xe4/0x158 [33720.962755] [<0000000040188e48>] die_if_kernel+0x1f0/0x3f0 [33720.962755] [<000000004019ba04>] handle_unaligned+0x574/0xb30 [33720.962755] [<0000000040189590>] handle_interruption+0x2f0/0xcb8 [33720.962755] [<000000004018f080>] intr_check_sig+0x0/0x3c [33720.962755] [33721.594770] ---[ end trace 955e25bb36439323 ]--- [33777.274755] rcu: INFO: rcu_sched detected stalls on CPUs/tasks: [33777.274755] (detected by 0, t=15002 jiffies, g=7042769, q=27) [33777.274755] rcu: All QSes seen, last rcu_sched kthread activity 14999 (4303336614-4303321615), jiffies_till_next_fqs=1, root ->qsmask 0x0 [33777.274755] as R running task 0 918 908 0x00000014 [33777.274755] Backtrace: [33777.274755] [<0000000040188c3c>] show_stack+0x5c/0x70 [33777.274755] [<00000000401ff5dc>] sched_show_task.part.0+0x1a4/0x1c8 [33777.274755] [<00000000401f7918>] sched_show_task+0x48/0x50 [33777.274755] [<00000000402415d8>] rcu_sched_clock_irq+0xd38/0xd68 [33777.274755] [<0000000040248360>] update_process_times+0x80/0x110 [33777.274755] [<000000004099da24>] timer_interrupt+0xb4/0x130 [33777.274755] [<00000000402284dc>] __handle_irq_event_percpu+0xc4/0x270 [33777.274755] [<00000000402286c0>] handle_irq_event_percpu+0x38/0xd8 [33777.274755] [<0000000040230bf0>] handle_percpu_irq+0xb0/0xe8 [33777.274755] [<0000000040227558>] generic_handle_irq+0x50/0x60 [33777.274755] [<0000000040190340>] call_on_stack+0x18/0x24 [33777.274755] [<000000004018a948>] execute_on_irq_stack+0x80/0x98 [33777.274755] [<000000004018bb48>] do_cpu_irq_mask+0x2a0/0x340 [33777.274755] [<000000004018f074>] intr_return+0x0/0xc [33777.274755] [33777.274755] rcu: rcu_sched kthread starved for 14999 jiffies! g7042769 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=3 [33777.274755] rcu: RCU grace-period kthread stack dump: [33777.274755] rcu_sched R running task 0 10 2 0x00000000 [33777.274755] Backtrace: [33777.274755] There are some other oddities: I upgraded from 5.4 using SLAB to 5.6/5.7 using SLUB a few weeks ago. This changed the permanent instability of the system (random crashes of processes) to a different level: the machine now locks up every other day without any relevant output. Config attached. The missing [ at the beginning of the continuation lines also happen on other errors: [28930.634792] do_page_fault() command='kwsysTestProces' type=15 address=0x00000004 in kwsysTestProcess[10000+c000] 28930.634792] trap #15: Data TLB miss fault [28930.822838] CPU: 3 PID: 1442 Comm: kwsysTestProces Not tainted 5.7.1-gentoo-parisc64 #1 Is there a KERN_CONT missing somewhere? Any ideas? Eike
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