Re: Page fault in syncache_drop

From: Andre Oppermann <andre@xxxxxxxxxxx>
Date: Tue, 17 Apr 2007 17:26:15 +0200

Kris Kennaway wrote:

8-core amd64, up-to-date CVS sources

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x0
fault code = supervisor read data, page not present
instruction pointer = 0x8:0xffffffff803134b4
stack pointer = 0x10:0xffffffffabe09890
frame pointer = 0x10:0xffffffffabe098a0
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 = 37 (irq31: bge0)
[thread pid 37 tid 100043 ]
Stopped at syncache_drop+0x4: cmpq $0,(%rdi)
db> wh
Tracing pid 37 tid 100043 td 0xffffff00b9409580
syncache_drop() at syncache_drop+0x4
syncache_add() at syncache_add+0x263
tcp_input() at tcp_input+0x7e0
ip_input() at ip_input+0x69d
netisr_dispatch() at netisr_dispatch+0x51
ether_demux() at ether_demux+0x19f
ether_input() at ether_input+0x3a8
bge_rxeof() at bge_rxeof+0x3ad
bge_intr() at bge_intr+0x11b
ithread_execute_handlers() at ithread_execute_handlers+0x15d
ithread_loop() at ithread_loop+0x69
fork_exit() at fork_exit+0x93
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffffffabe09d30, rbp = 0 ---

Fixed in rev. 1.110 of sys/netinet/tcp_syncache.c.

--
Andre

_______________________________________________
freebsd-net@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-net
To unsubscribe, send any mail to "freebsd-net-unsubscribe@xxxxxxxxxxx"

References:
- Page fault in syncache_drop
  - From: Kris Kennaway

Prev by Date: Re: fake MAC addresses and ARP
Next by Date: Fwd: ng_tag and pf?
Previous by thread: Page fault in syncache_drop
Next by thread: Carp caching routes to networks
Index(es):
- Date
- Thread

Relevant Pages

Re: Still crashes in swapgeom_strategy and also sometimes in propagate_priority
... page fault while in kernel mode ... Fatal trap 3: breakpoint instruction
fault while in kernel mode ... (freebsd-current)
5.1-RELEASE-p2 daily panic
... page fault while in kernel mode ... Fatal trap 3: breakpoint instruction
fault while in kernel mode ... (freebsd-stable)
panic in device_attach probing sata phy
... Fatal trap 12: page fault while in kernel mode ... instruction pointer
= 0x8:0xffffffff803d23a2 ... Stopped at device_attach+0x22: cmpq $0,0x50 ... (freebsd-current)
Panic in _mtx_lock_sleep
... page fault while in kernel mode ... Fatal trap 3: breakpoint instruction
fault while in kernel mode ... (freebsd-current)
Re: Page fault in syncache_drop
... Fatal trap 12: page fault while in kernel mode ... instruction pointer
= 0x8:0xffffffff803134b4 ... Stopped at syncache_drop+0x4: cmpq $0, ... (freebsd-current)