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Bug #12548

Updated by Jim Pingle almost 3 years ago

I've hit this on my edge twice now on 22.01 snapshots but I don't have a lead on a cause yet. The panics happened a while apart (Nov 12th and Nov 29th), there were a few interface events this morning as I had an issue on one of my WANs. 

 Panic message: 

 <pre> 
 Fatal trap 12: page fault while in kernel mode 
 cpuid = 1; apic id = 02 
 fault virtual address 	 = 0x10 
 fault code 		 = supervisor read data, page not present 
 instruction pointer 	 = 0x20:0xffffffff8105bbfb 
 stack pointer 	         = 0x0:0xfffffe00401f3b30 
 frame pointer 	         = 0x0:0xfffffe00401f3bc0 
 code segment 		 = base 0x0, limit 0xfffff, type 0x1b 
			 = DPL 0, pres 1, long 1, def32 0, gran 1 
 processor eflags 	 = interrupt enabled, resume, IOPL = 0 
 current process 		 = 12 (swi4: clock (0)) 
 trap number 		 = 12 
 panic: page fault 
 cpuid = 3 
 time = 1638192056 
 KDB: enter: panic 
 </pre> 

 Backtrace: 

 <pre> 
 db:0:kdb.enter.default>    bt 
 Tracing pid 12 tid 100056 td 0xfffff8000546c000 
 kdb_enter() at kdb_enter+0x37/frame 0xfffffe00401f37f0 
 vpanic() at vpanic+0x197/frame 0xfffffe00401f3840 
 panic() at panic+0x43/frame 0xfffffe00401f38a0 
 trap_fatal() at trap_fatal+0x391/frame 0xfffffe00401f3900 
 trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00401f3950 
 trap() at trap+0x286/frame 0xfffffe00401f3a60 
 calltrap() at calltrap+0x8/frame 0xfffffe00401f3a60 
 --- trap 0xc, rip = 0xffffffff8105bbfb, rsp = 0xfffffe00401f3b30, rbp = 0xfffffe00401f3bc0 --- 
 nd6_dad_timer() at nd6_dad_timer+0x4b/frame 0xfffffe00401f3bc0 
 softclock_call_cc() at softclock_call_cc+0x141/frame 0xfffffe00401f3c70 
 softclock() at softclock+0x79/frame 0xfffffe00401f3c90 
 ithread_loop() at ithread_loop+0x23c/frame 0xfffffe00401f3cf0 
 fork_exit() at fork_exit+0x7e/frame 0xfffffe00401f3d30 
 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00401f3d30 
 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- 
 </pre> 

 Mateusz said he suspects it's fixed by https://reviews.freebsd.org/D32811 https://reviews.freebsd.org/D32810

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