ACC Software Products and Documents Release Notes

Advanced Communications Controller Release Notes for B.03.40
Patches and Fixes for this Version
Chapter 1 15
4 Reference:JAGae23843
Panics when ACC is started using
“zmasterd”, while ACC is already up and
running. A sample stack trace is as
follows:
0) panic+0x6c
1) report_trap_or_int_and_panic+0x94
2) trap+0xed4
3) nokgdb+0x8
4) kfree+0xe4
5) N2z_shutdown_x25_subsys+0x6ac
6) N2Z_F0_close+0x708
7) close_wrapper+0x38
8) csq_protect+0x11c
9) osr_pop_subr+0x214
10) osr_close_subr+0xe00
11) hpstreams_close_int+0x2f4
12) hpstreams_close+0x2c
13) call_open_close+0x28c
14) closed+0xe4
15) spec_close+0x64
16) vn_close+0x48
17) vno_close+0x20
18) closef+0x64
19) exit+0xc3c
20) psig+0x3d8
21) syscall+0xb38
22) $syscallrtn+0x0
The panic was a result of race condition
between zmasterd shutdown and
x25subsystem shutdown. The fix is to
check for a NULL vctbl in x25susbsytem
shutdown.
Table 1-1 Defects fixed in this release (Continued)
Symptoms Defect/Fix