https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224922
Bug ID: 224922
Summary: ip_reass should reset M_PKTHDR bit of fragmented
packet for NIC which can produce !WRITEABLE mbuf
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
m_unshare() panic in IPSec transport mode when try to ping with size 6000.
panic: m_unshare: m0 0xfffff80020f82600, m 0xfffff8005d054100 has M_PKTHDR
cpuid = 15
time = 1495578455
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2c/frame 0xfffffe044e9bb890
kdb_backtrace() at kdb_backtrace+0x53/frame 0xfffffe044e9bb960
vpanic() at vpanic+0x269/frame 0xfffffe044e9bba30
kassert_panic() at kassert_panic+0xc7/frame 0xfffffe044e9bbac0
m_unshare() at m_unshare+0x578/frame 0xfffffe044e9bbbc0
esp_output() at esp_output+0x44c/frame 0xfffffe044e9bbe40
ipsec4_perform_request() at ipsec4_perform_request+0x5df/frame
0xfffffe044e9bbff0
Refer below mail Chain for more details and possible solution
https://lists.freebsd.org/pipermail/freebsd-net/2017-December/049490.html
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