Connectrix Brocade B-series: Processor rebooted because to OCP or a silent reboot
Summary: Connectrix Brocade B-series: Processor rebooted because to OCP or a silent reboot.
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Symptoms
/fabos/cliexec/hadump:
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TIME_STAMP: Sep 2 09:30:42.390914
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Local CP (Slot 2, CP1): Active, Cold Recovered
Remote CP (Slot 1, CP0): Standby, Healthy
HA enabled, Heartbeat Up, HA State synchronized
Errdump:
2024/09/02-02:02:00 (CEST), SLOT 2- processor rebooted because to OCP or a silent reboot
2024/09/02-02:02:42 (CEST), SLOT 1 -Processor rebooted - Software Fault:Kernel Panic.
RAS logs:
2024/09/02-02:02:42:643406 (CEST), [HAM-1004], 10191663/3911876, SLOT 1 | CHASSIS, INFO, FC4CH0300, Processor rebooted - Software Fault:Kernel Panic., reboot.c, line: 122, comp:hamd, ltime:2024/09/02-02:02:29:879803
Cause
The data shows that the reboot is caused due to the syslock module. Per the engineering team, there were several fixes development for Silent Reboot put into 9.2.1 that stop this issue from occurring. There is no public defect for it, hence it is not shown in the v9.2.1x release note:
PowerPC Book-E Watchdog Exception
CPU: 5 PID: 0 Comm: swapper/5 Tainted: P O L 4.1.35rt41 #1
task: 9d06ea40 ti: ac29c000 task.ti: 9d0c4000
NIP: 407785e0 LR: c1bcfd6c CTR: 40778610
REGS: ac29ff10 TRAP: 3202 Tainted: P O L (4.1.35rt41)
MSR: 00021202 <CE,ME,DE> CR: 42000044 XER: 00000000
GPR00: c1bcfd6c 9d0c7b80 9d06ea40 00021202 00000000 9d0c7d10 45d8950e 409b51c0
GPR08: acc98010 00000001 00000000 9d0c7cf0 40778610 00000000 00000101 00000004
GPR16: 00000000 40a0f080 9d0c4000 40a0f084 c1c61c10 9d483b10 a31dd2e0 a31dd0e0
GPR24: 00000005 c1be0000 40a0f144 000004d8 c1bded7c 00000001 9d0c4000 c1bded7c
NIP [407785e0] __raw_spin_lock_irqsave+0xc0/0xf0
LR [c1bcfd6c] sys_lock_info_post_lock+0x8c/0xd70 [syslock_module]
Call Trace:
[9d0c7b80] [00021202] 0x21202 (unreliable)
[9d0c7ba0] [c1bcfd6c] sys_lock_info_post_lock+0x8c/0xd70 [syslock_module]
[9d0c7cf0] [c1bcd2b0] _sys_spin_lock_bh+0x240/0x310 [syslock_module]
[9d0c7d20] [c1c61c70] isc_sap_timer+0x60/0x1f0 [isc_module]
[9d0c7da0] [4008f1c8] call_timer_fn.isra.28+0x28/0x90
[9d0c7dc0] [4008f404] run_timer_softirq+0x1d4/0x260BUG: soft lockup
Resolution
Upgrade to v9.2.1a or later as there are several fixes and developments for Silent Reboot put into 9.2.1 that stop this issue from occurring.
Article Properties
Article Number: 000228275
Article Type: Solution
Last Modified: 21 Nov 2025
Version: 3
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