UDP LOR with the latest RELENG_7

Mike Tancsa mike at sentex.net
Fri Oct 10 07:58:11 PDT 2008

At 08:40 AM 10/10/2008, Vlad GALU wrote:
>    As my kernel had started to lock up periodically and I don't have
>hands-on access to that machine, I enabled WITNESS.
>So these started to pop up:

Is this with a stock kernel and sysctl settings ?  Or do you have any 
custom kernel options ?


>-- cut here --
>--- syscall (97, FreeBSD ELF64, socket), rip = 0x80070427c, rsp =
>0x7fffffffe8c8, rbp = 0x516348 ---
>uma_zalloc_arg: zone "16" with the following non-sleepable locks held:
>exclusive rw udp r = 0 (0xffffffff8064c928) locked @
>KDB: stack backtrace:
>db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
>witness_warn() at witness_warn+0x241
>uma_zalloc_arg() at uma_zalloc_arg+0x290
>malloc() at malloc+0x5c
>getenv() at getenv+0x93
>getenv_quad() at getenv_quad+0x13
>getenv_int() at getenv_int+0x15
>udp_inpcb_init() at udp_inpcb_init+0x1f
>slab_zalloc() at slab_zalloc+0x1ad
>uma_zone_slab() at uma_zone_slab+0xb4
>uma_zalloc_arg() at uma_zalloc_arg+0x31d
>in_pcballoc() at in_pcballoc+0x38
>udp_attach() at udp_attach+0x57
>socreate() at socreate+0x14f
>socket() at socket+0x8a
>syscall() at syscall+0x1a9
>Xfast_syscall() at Xfast_syscall+0xab
>--- syscall (97, FreeBSD ELF64, socket), rip = 0x80070427c, rsp =
>0x7fffffffe8c8, rbp = 0x516348 ---
>-- and here --
>    I tried to see whether bz@ had this one on his page, but his
>website is currently being migrated and the list of LORs was
>unavailable. Therefore, sorry if this mail is just noise...
>~/.signature: no such file or directory
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