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Re: kern/42455: tstile hang with nfs



I have attached my current debug code.
When the bug hit I got this below.

Has anyone an idea what is going wrong?
Can anyone tell me how to proceed?


m_get1: m 0xffffa00000fa1000, mb 0xffffa00000fa1000, mb->m_next 
0xffffa000013d5e00, mreq 0xffffa000012ce800
nfsm_disct1: mb 0xffffa00000fa1000, mreq 0xffffa00000fa1000
nfs_writerpc: mbufcnt 2 mb 0xffffa00000fa1000, mreq 0xffffa00000fa1000, mrep 
0xffffa000012ce800, md 0xffffa00000fa1000
nfsmblk timeout, mbufcount 1, mb 0xffffa00000fa1000, mreq 0xffffa00000fa1000, 
mrep 0xffffa000012ce800, md 0xffffa00000fa1000
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff802021a5 cs e030 rflags 286 cr2  7f7ffdfdc000 
cpl 0 rsp ffffa0002610d9d0
Stopped in pid 0.46 (system) at netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
nfs_writerpc() at netbsd:nfs_writerpc+0x1033
nfs_doio() at netbsd:nfs_doio+0x4d0
nfssvc_iod() at netbsd:nfssvc_iod+0x17b
ds          0
es          0
fs          0xe033
gs          0x1000
rdi         0
rsi         0xffffffff80ee9000
rbp         0xffffa0002610d9d0
rbx         0x20c49ba5e353f7cf
rdx         0xffffffff80b73008  cpu_info_primary+0x1c8
rcx         0
rax         0
r8          0x400
r9          0
r10         0xffffa0002610d9c0
r11         0xe033
r12         0x1
r13         0x1
r14         0x23
r15         0xffffa0002610dbc0
rip         0xffffffff802021a5  breakpoint+0x5
cs          0xe030
rflags      0x286
rsp         0xffffa0002610d9d0
ss          0xe02b
netbsd:breakpoint+0x5:  leave
db> show mbuf /c 0xffffa00000fa1000
MBUF 0xffffa00000fa1000
  data=0xffffa000011b5800, len=90, type=1, flags=0x900010b<EXT,PKTHDR,PROTO1,BCA
ST,EXT_CLUSTER,EXT_RW>
  owner=0xffffa000248f63b0, next=0x0, nextpkt=0xffffa000011a9200
  leadingspace=0, trailingspace=1958, readonly=0
  pktlen=90, rcvif=0xffffa000248f6010, csum_flags=0x0x0, csum_data=0xffff, segsz
=32136531
  ext_refcnt=1, ext_buf=0xffffa000011b5800, ext_size=2048, ext_free=0x0, ext_arg
=0xffffa0002320d3d0
db> show mbuf /c 0xffffa00000fa1000
MBUF 0xffffa00000fa1000
  data=0xffffa000011b5800, len=90, type=1, flags=0x900010b<EXT,PKTHDR,PROTO1,BCA
ST,EXT_CLUSTER,EXT_RW>
  owner=0xffffa000248f63b0, next=0x0, nextpkt=0xffffa000011a9200
  leadingspace=0, trailingspace=1958, readonly=0
  pktlen=90, rcvif=0xffffa000248f6010, csum_flags=0x0x0, csum_data=0xffff, segsz
=32136531
  ext_refcnt=1, ext_buf=0xffffa000011b5800, ext_size=2048, ext_free=0x0, ext_arg
=0xffffa0002320d3d0
db> show mbuf /c 0xffffa000013d5e00
MBUF 0xffffa000013d5e00
  data=0xffffa000221e6000, len=8192, type=1, flags=0x4000001<EXT,EXT_ROMAP>
  owner=0xffffffff80bdafe0, next=0x0, nextpkt=0x0
  leadingspace=0, trailingspace=0, readonly=1
  ext_refcnt=4, ext_buf=0xffffa000221e6000, ext_size=8192, ext_free=0xffffffff80
4e5b6f, ext_arg=0xffffa0002610da70
db> show mbuf /c 0xffffa000012ce800
MBUF 0xffffa000012ce800
  data=0xffffa00001201802, len=2046, type=1, flags=0x9000003<EXT,PKTHDR,EXT_CLUS
TER,EXT_RW>
  owner=0xffffffff80bdae58, next=0x0, nextpkt=0x0
  leadingspace=2, trailingspace=0, readonly=0
  pktlen=2046, rcvif=0x0, csum_flags=0x0x0, csum_data=0x0, segsz=32136531
  ext_refcnt=1, ext_buf=0xffffa00001201800, ext_size=2048, ext_free=0x0, ext_arg
=0xffffa0002320d3d0
db> 

Attachment: nfs_debug.diff
Description: Binary data



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