Problem :
Unable to install the kernel rpm when we are trying to install the
rpm via our customized backend library .
This case is observed when we have two kernels already installed and
we are trying to install the third kernel
Description :
We have a backend library through which we are calling the rpm api's
to install/upgrade the rpm's .
When we are trying to install the kernel rpm's using our backend
library we are getting the exceptions in the rpm library and our
library is crashing .
Up on running the gdb the following trace is obtained .
#0 0x0000003a4f417052 in indexCmp (avp=0x7fffffffe020,
bvp=0x3df16ee538) at header.c:186
#1 0x0000003a4a834260 in bsearch () from /lib64/libc.so.6
#2 0x0000003a4f417816 in findEntry (h=0x10315d0, tag=RPMTAG_EPOCH,
type=RPM_NULL_TYPE) at header.c:708
#3 0x0000003a4f419be3 in intGetTdEntry (h=0x10315d0,
td=0x7fffffffe130, flags=HEADERGET_DEFAULT) at header.c:1304
#4 0x0000003a4f4175bb in headerGet (h=0x10315d0, tag=RPMTAG_EPOCH,
td=0x7fffffffe130, flags=HEADERGET_DEFAULT) at header.c:1341
#5 0x00007ffff7ddbc04 in headerGetEntryWrapper () from
/opt/novell/zenworks/lib/zmd/libredcarpet.so.0
#6 0x00007ffff7ddcb42 in rc_rpmman_read_header () from
/opt/novell/zenworks/lib/zmd/libredcarpet.so.0
#7 0x00007ffff7ddf469 in ?? () from
/opt/novell/zenworks/lib/zmd/libredcarpet.so.0
#8 0x00007ffff7de1202 in ?? () from
/opt/novell/zenworks/lib/zmd/libredcarpet.so.0
as we can observe in the trace the exception is coming while reading
the rpm headers . As part of installation we will be reading headers
of a rpm using the headerGet call from rpm library and when we are
trying to read the header information(epoch tag) the application is
getting crashed.
We are setting the following flags during the rpm transaction
1)RPMPROB_FILTER_REPLACEPKG
2)RPMPROB_FILTER_REPLACEOLDFILES
3)RPMPROB_FILTER_REPLACENEWFILES
4)RPMPROB_FILTER_OLDPACKAGE
As we have limited knowledge on the rpm internals any help would be
appreciated . The backend library source is located at
http://download.opensuse.org/repositories/systemsmanagement:/zlm:/backend3/RedHat_RHEL-6/src/
if some one wants to take a look at it .
Let me know if you need any more details.
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