[SR-Users] SHM error after few days...

Hi, After few days of running kamailio (I am using TLS for client), suddenly I see that the connections are being dropped. When I restart kamailio, I see following errors: Stopping kamailio: [FAILED] Not starting : invalid configuration file! 0(20563) : <core> [mem/shm_mem.c:168]: shm_getmem(): ERROR: shm_mem_init: could not attach shared memory segment: Cannot allocate memory 0(20563) : <core> [mem/mem.c:125]: init_shm_mallocs(): could not initialize shared memory pool, exiting... Too much shared memory demanded: 4294967296 0(20563) ERROR: <core> [sr_module.c:627]: load_module(): ERROR: load_module: /usr/lib64/kamailio/modules/tls.so: mod_register failed 0(20563) : <core> [cfg.y:3408]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 328, column 12-19: failed to load module 0(20563) : <core> [mem/shm_mem.c:168]: shm_getmem(): ERROR: shm_mem_init: could not attach shared memory segment: Cannot allocate memory 0(20563) : <core> [mem/mem.c:125]: init_shm_mallocs(): could not initialize shared memory pool, exiting... Too much shared memory demanded: 4294967296 0(20563) : <core> [cfg.y:3411]: yyerror_at(): parse error in config file /etc/kamailio/kamailio.cfg, line 357, column 71: Can't initialize shared memory ERROR: bad config file (2 errors) 0(20563) ERROR: mi_fifo [mi_fifo.c:271]: mi_destroy(): FIFO stat failed: Bad address My shared memory size for the kamailio is 4096M. It started fine initially. However, after I noticed connection drops, I see the above issue. THen I reduced shared memory to 2048M and it started fine. I am under the impression that shared memory is just a filed I/O mapped which can be several hundred gigs. I looked at my filesystem. It looks fine df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda3 958788080 200734800 709349640 23% / tmpfs 3975996 0 3975996 0% /dev/shm /dev/sda1 495844 37498 432746 8% /boot What could be wrong here? Any help greatly appreciated. Krish Kurapati