Re: kern/51522

[Tom Ivar Helbekkmo <tih%hamartun.priv.no@localhost>]

The following reply was made to PR kern/51522; it has been noted by GNATS.

From: Tom Ivar Helbekkmo <tih%hamartun.priv.no@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/51522
Date: Sun, 16 Oct 2016 10:09:14 +0200

 Tiring of frequent crashes, I changed "set block-policy return" to "set
 block-policy drop" in pf.conf, hoping that the reduced ICMP load would
 make things better.  After a few hours, I get the crash shown below.  As
 you can see, I have (at least) two CPUs complaining at me, and after
 deciphering the text "WARNING: SPL NOT LOWERED", I find:
 
 /sys/arch/amd64/amd64/locore.S:4:       .asciz  "WARNING: SPL NOT LOWERED ON SYSCALL %d %d EXIT %x %x\n"
 /sys/arch/amd64/amd64/amd64_trap.S:4:   .asciz  "WARNING: SPL NOT LOWERED ON TRAP EXIT %x %x\n"
 
 Anyway, the panic:
 
 panic: pool_get(rndsample): free list modified: magic=f01735f; page 0xfffffe8105746000; item addr 0xfffffe8105746480
 
 cpu2: Begin traceback...
 vpanic() at netbsd:vpanic+0x140
 snprintf() at netbsd:snprintf
 pool_get() at netbsd:pool_get+0x41b
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