Closed erikarn closed 9 years ago
erikarn
commented
9 years ago Ok, with -O0:
Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 802c09c00 (LWP 100519 nm_rx: netmap0)] 0x000000000050244a in uma_zfree_arg (zone=0x802e59d80, item=0x8008ca800, udata=0x0) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:2788 2788 bucket = cache->uc_freebucket; (gdb) print cache $1 = (uma_cache_t) 0x180 (gdb)
erikarn
commented
9 years ago (gdb) print cache
$1 = (uma_cache_t) 0x180
(gdb) print *zone
$2 = {uz_name = 0x52a6a3 "mbuf_cluster", uz_lock = 0x802e5a8d0, uz_link = {le_next = 0x0, le_prev = 0x802e5a908}, uz_full_bucket = {lh_first = 0x0}, uz_free_bucket = {lh_first = 0x0}, uz_kegs = {lh_first = 0x802e59db8}, uz_klink = {kl_link = {le_next = 0x0, le_prev = 0x802e59db0},
kl_keg = 0x802e5a8c0}, uz_slab = 0x504bb0
pkelsey
commented
9 years ago This is fixed by cdb8e066dd5dee81294c9042363803e31f47832c.
After running for a while, a clean shutdown ends with a segfault:
Core was generated by `blockd'. Program terminated with signal 11, Segmentation fault.
0 uma_zfree_arg (zone=0x802e58d80, item=0x802505000, udata=0x0) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:2788
2788 bucket = cache->uc_freebucket; (gdb) bt
0 uma_zfree_arg (zone=0x802e58d80, item=0x802505000, udata=0x0) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:2788
1 0x000000000049485c in zone_free_item (zone=0x802e57000, item=0x8024f5b00, udata=0x0, skip=, flags=0)
2 0x0000000000493342 in bucket_drain (zone=0x802e57000, bucket=0x80278f418) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:660
3 local_cache_drain (zone=0x802e57000, cache=) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:670
4 uma_tls_destructor (arg=0x81c00f000) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:1653
5 0x000000080229dd25 in ?? () from /lib/libthr.so.3
6 0x00000008022a533e in ?? () from /lib/libthr.so.3
7 0x00000008022a5289 in ?? () from /lib/libthr.so.3
8 0x00000008022a50fb in pthread_exit () from /lib/libthr.so.3
9 0x000000080229a4fd in ?? () from /lib/libthr.so.3
10 0x0000000000000000 in ?? ()
(gdb) frame 0
0 uma_zfree_arg (zone=0x802e58d80, item=0x802505000, udata=0x0) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:2788
2788 bucket = cache->uc_freebucket; (gdb) print cache $1 =
(gdb) print bucket
$2 =
(gdb) print zone
$3 = (uma_zone_t) 0x802e58d80
(gdb) print *zone
$4 = {uz_name = 0x4b0ff5 "mbuf_cluster", uz_lock = 0x802e598d0, uz_link = {le_next = 0x0, le_prev = 0x802e59908}, uz_full_bucket = {lh_first = 0x0}, uz_free_bucket = {lh_first = 0x0}, uz_kegs = {
lh_first = 0x802e58db8}, uz_klink = {kl_link = {le_next = 0x0, le_prev = 0x802e58db0}, kl_keg = 0x802e598c0}, uz_slab = 0x4963b0 , uz_ctor = 0x432540 ,
uz_dtor = 0x432620 , uz_init = 0x0, uz_fini = 0x0, uz_flags = 9224, uz_size = 2048, uz_allocs = 245, uz_frees = 0, uz_fails = 0, uz_sleeps = 0, uz_fills = 0, uz_count = 24,
uz_cacheidx = 2}
(gdb) print uma_tls_key
$5 = 3
(gdb) print uhi_tls_get(uma_tls_key)
You can't do that without a process to debug.
(gdb) frame 4
4 uma_tls_destructor (arg=0x81c00f000) at /home/adrian/git/github/erikarn/libuinet/lib/libuinet/../../sys/vm/uma_core.c:1653
1653 local_cache_drain(tls->ut_caches[i].uc_zone, &tls->ut_caches[i]); (gdb)
I'll recompile with -O0 and retry but I bet it's NULL.