Bug #1426

m_copydata panic in vkernel

Added by dillon about 7 years ago. Updated over 2 years ago.

Status:ClosedStart date:
Priority:NormalDue date:
Assignee:-% Done:


Target version:3.8.0


While running stress2 using trevorjk's vkernel setup with the
latest head as of last night (after my second round of pthread
fixes for the vkernel) I got a mbuf panic:

panic: m_copydata, negative off -1
mp_lock = 00000001; cpuid = 1
Trace beginning at frame 0x57a9ea04
panic(57a9ea28,c,0,579218c0,57a9ea38) at 0x80bb436
panic(823d90d,ffffffff,c,0,579218c0) at 0x80bb436
m_copydata(0,ffffffff,1,59305dbc,0) at 0x80eacdc
tcp_output(579218c0,59305d18,57a9eb44,59305d9c,59305d88) at 0x815e3bc
tcp_input(59305d00,14,6,59305d00,584aae20) at 0x815d29a
ip_reass(283a0150,14,0,0,0) at 0x8153362
ip_input(59305d00,57a9ed60,8136b31,59305d18,1) at 0x8154a73
ip_input(59305d18,1,8342c68,57a9ed84,8160775) at 0x8154aa7
netmsg_service(59305d18,1,0,1,414003b8) at 0x8136b31
tcpmsg_service_loop(0,0,0,0,0) at 0x8160775

The vkernel is bring run on my 2xCPU test box, configured -n 2 -m 128m.

Matthew Dillon


#1 Updated by tuxillo over 2 years ago

  • Description updated (diff)
  • Category set to Other
  • Status changed from New to Closed
  • Assignee deleted (0)
  • Target version set to 3.8.0
  • % Done changed from 0 to 100

Duplicate of #1388

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