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Bug #2092

Updated by masterblaster over 12 years ago

Hi all, 

 i'm running v2.11.0.397.g4b06a0-DEVELOPMENT x86_64 

 I got this kind of panic on a daily basis, always at night (probably 
 while hammer does reblocking?): 

 Jun 20 03:09:14 randy kernel: ahci0.1: disk_rw: unknown state 6 
 Jun 20 03:09:14 randy last message repeated 18 times 
 Jun 20 03:09:14 randy kernel: panic: Bad link elm 0xffffffe01e019e78 
 next->prev != elm 
 Jun 20 03:09:14 randy kernel: cpuid = 0 
 Jun 20 03:09:14 randy kernel: Trace beginning at frame 0xffffffe01de1fa00 
 Jun 20 03:09:14 randy kernel: panic() at panic+0x1ed 
 Jun 20 03:09:14 randy kernel: panic() at panic+0x1ed 
 Jun 20 03:09:14 randy kernel: camisr_runqueue() at camisr_runqueue+0x87 
 Jun 20 03:09:14 randy kernel: swi_cambio() at swi_cambio+0x169 
 Jun 20 03:09:14 randy kernel: ithread_handler() at ithread_handler+0x1ba 
 Jun 20 03:09:14 randy kernel: boot() called on cpu#0 

 After applying these two patches it's running stable since 4 days. 

 The difference is now that TAILQ_EMPTY (patch 0002) is in 
 camisr_runqueue() *and* is protected by a spinlock too. The last maybe 
 fixes the panic? Does it makes sense? 

 ByE!

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