Re: Anyone else seen this. [Draytek rebooting]
jkn <[email protected]>
| Newsgroups | comp.os.linux.misc,uk.d-i-y |
|---|---|
| Message-ID | <[email protected]> |
On 03/07/2026 22:16, The Natural Philosopher wrote: > On 03/07/2026 16:45, jkn wrote: >> On 03/07/2026 16:21, The Natural Philosopher wrote: >>> Recently my router (Draytek 2726) has been spontaneously rebooting. >>> >>> Examination of the logs show a kernel panic caused by 'attempt to >>> execute an illegal instruction'. >>> >>> My assumption, possibly erroneous, is that the actual firmware code >>> is corrupted >>> The router is rated only to +45°C but that is the recommended limit >>> for flash memory, and the room temperature has been up towards 40°C. >>> which doesn't leave a great deal of margin for router internal heat >>> production. >>> My query is whether anyone else has seen issues with flash memory in >>> the recent hear wave. >>> >>> Surely phones get hotter than this? >>> >>> Genuinely interested in other's experiences. >>> >> >> I have a Draytek 2927 series - it is not new to me, but was previously >> used in a commercial environment with no issues AFAIK. >> >> I have noticed a situation with mine where the connection both wired >> and wireless) appears to drop momentarily, on occasion (couple of >> times a week?) >> >> I recently looked at the log, and saw something similar to what you >> describe - the router was in fact rebooting, and the log shows >> something like: >> >> > sys ver dbg >> >> Router Model: Vigor2927ax Version: 4.5.2 English >> Profile version: 4.0.0 Status: 1 (0x9de71d0f) >> Router IP: 192.168.0.1 Netmask: 255.255.255.0 >> Firmware Build Date/Time: Feb 12 2026 17:45:01 >> Router Name: DrayTek >> Revision: 6562_fd593bfca2 drayos2015 >> Router serial no: None >> >> ---------firmware exception debug info on >> cpu0----------------------------- >> >> # etc. >> > Yes. that is significant. Its the next bit of the log before the > registers dump that is significant > > Mine said (in shorthand) 'The CPU tried to execute an instruction that > does not exist' > Yes, my log has: ---------firmware exception debug info on cpu0----------------------------- EPC=60034b60, Cause=00800014, Status=1100fc03, BadAddr=00000000, RetAddr=60034a58 exception id=5(ADES: Address Error Store) exception occured in TASK Level task_id=161, SP=0x629390b8(3188 bytes free, 5664 used bytes) system tick =26381273 CURRENT_VERSION : 4.5.2_RC5 get from address : 60017000 Dump CPU0 registers: ... but if you look eg. here: https://www.draytek.co.uk/support/guides/kb-troubleshoot-reboot they list a log like this - this seems a 'normal' feature of reboot issues, without considering flash failure.