Date: Wed, 1 Sep 2010 19:53:09 +0400 From: pluknet <pluknet@gmail.com> To: freebsd-stable <freebsd-stable@freebsd.org> Subject: page fault in e1000_clear_hw_cntrs_base_generic() during SIOCAIFADDR Message-ID: <AANLkTi=cQF0Ta5scpMBZ6Ba_uj_Zqxu9=2qUv2g=14fp@mail.gmail.com>
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Hi.
This is reproducible from time to time on boot when
handling SIOCAIFADDR called from ifconfig on igb
on fresh (and not so fresh) 8-STABLE.
How can I help with debugging?
Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex igb0 (IGB Core Lock) r = 0 (0xc2655534) locked @
/usr/src/sys/modules/igb/../../dev/e1000/if_igb.c:965
KDB: stack backtrace:
db_trace_self_wrapper(c08b5055,cce577b8,c060db15,3c5,0,...) at
db_trace_self_wrapper+0x26
kdb_backtrace(3c5,0,ffffffff,c0a94864,cce577f0,...) at kdb_backtrace+0x29
_witness_debugger(c08b74fe,cce57804,4,1,0,...) at _witness_debugger+0x25
witness_warn(5,0,c08e3140,cce5782c,c2956000,...) at witness_warn+0x1fe
trap(cce57890) at trap+0x195
calltrap() at calltrap+0x6
--- trap 0xc, eip = 0xc3192477, esp = 0xcce578d0, ebp = 0xcce578e0 ---
e1000_clear_hw_cntrs_base_generic(c2651004,64,c3185850,c2651000,0,...)
at e1000_clear_hw_cntrs_base_generic+0x3e7
igb_init_locked(c2655534,0,c31ac72f,3c5,c31c3d00,...) at igb_init_locked+0x16e2
igb_ioctl(c2642c00,8020690c,c31c3d00,cce57a8c,c457ea9b,...) at igb_ioctl+0x495
in_ifinit(0,c08c391b,1aa,1a6,c2642c00,...) at in_ifinit+0x29e
in_control(c2a58b44,8040691a,c31bd100,c2642c00,c2948000,...) at in_control+0xccb
ifioctl(c2a58b44,8040691a,c31bd100,c2948000,c31c3b00,...) at ifioctl+0x1820
soo_ioctl(c29b7bd0,8040691a,c31bd100,c254b100,c2948000,...) at soo_ioctl+0x415
kern_ioctl(c2948000,3,8040691a,c31bd100,6073c0,...) at kern_ioctl+0x1fd
ioctl(c2948000,cce57cf8,c08e3073,c08c398f,c2956000,...) at ioctl+0x134
syscall(cce57d38) at syscall+0x220
Xint0x80_syscall() at Xint0x80_syscall+0x21
--- syscall (54, FreeBSD ELF32, ioctl), eip = 0x281c1543, esp =
0xbfbfe60c, ebp = 0xbfbfe648 ---
Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0xcc5af000
fault code = supervisor read, page not present
instruction pointer = 0x20:0xc3192477
stack pointer = 0x28:0xcce578d0
frame pointer = 0x28:0xcce578e0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 700 (ifconfig)
db> show ifnet 0xc2642c00
igb0:
if_dname = igb
if_dunit = 0
if_description = (null)
if_index = 2
if_refcount = 2
if_softc = 0xc2651000
if_l2com = 0xc2676b80
if_vnet = 0
if_home_vnet = 0
if_addr = 0xc31c4500
if_llsoftc = 0
if_label = 0
if_pcount = 0
if_flags = 0x00008803
if_drv_flags = 0x00000040
if_capabilities = 0x000101bb
if_capenable = 0x000001bb
if_snd.ifq_head = 0
if_snd.ifq_tail = 0
if_snd.ifq_len = 0
if_snd.ifq_maxlen = 1023
if_snd.ifq_drops = 0
if_snd.ifq_drv_head = 0
if_snd.ifq_drv_tail = 0
if_snd.ifq_drv_len = 0
if_snd.ifq_drv_maxlen = 1023
if_snd.altq_type = 0
if_snd.altq_flags = 1
--
wbr,
pluknet
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