[Bug 194577] mbuf packet header leakage when closing TUN devices

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Mon Oct 27 10:15:09 UTC 2014


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194577

--- Comment #7 from Hans Petter Selasky <hselasky at FreeBSD.org> ---
Hi,

Here are the candidates for lost mbufs:

Stuck MBUF[2] TID=100082 LEN=0
mbuf 0xc3265e00: len 20, flags 0x00000002
mbuf 0xc3265e00: ip_v 0
Stuck MBUF[3] TID=100087 LEN=0
mbuf 0xc2b04e00: len 20, flags 0x00000002
mbuf 0xc2b04e00: ip_v 0
Stuck MBUF[5] TID=100087 LEN=0
mbuf 0xc2b02900: len 20, flags 0x00000002
mbuf 0xc2b02900: ip_v 0
Stuck MBUF[22] TID=100082 LEN=0
mbuf 0xc2b05100: len 20, flags 0x00000002
mbuf 0xc2b05100: ip_v 0
Stuck MBUF[23] TID=100082 LEN=0
mbuf 0xc2b07600: len 20, flags 0x00000002
mbuf 0xc2b07600: ip_v 0
Stuck MBUF[89] TID=100087 LEN=0
mbuf 0xc325da00: len 20, flags 0x00000002
mbuf 0xc325da00: ip_v 0 

Note, this is 9-stable, so the M_PRINT_FLAGS was not there, and I used 0x%08x
instead.

--HPS

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