hi, zhu Here is the detail. Wish it is what your wanted. [root@test 127.0.0.1-2019-11-11-18:59:57]# crash /usr/lib/debug/lib/modules/$(uname -r)/vmlinux vmcore crash 7.2.3-10.el7 Copyright (C) 2002-2017 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. GNU gdb (GDB) 7.6 Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... WARNING: kernel relocated [224MB]: patching 92417 gdb minimal_symbol values KERNEL: /usr/lib/debug/lib/modules/4.14.97-.el7.centos.x86_64/vmlinux DUMPFILE: vmcore [PARTIAL DUMP] CPUS: 48 DATE: Mon Nov 11 18:59:49 2019 UPTIME: 11 days, 04:57:53 LOAD AVERAGE: 3.14, 3.11, 3.09 TASKS: 1103 NODENAME: test RELEASE: 4.14.97-.el7.centos.x86_64 VERSION: #1 SMP Mon Apr 29 14:32:59 CST 2019 MACHINE: x86_64 (2494 Mhz) MEMORY: 159.9 GB PANIC: "general protection fault: 0000 [#1] SMP PTI" PID: 108 COMMAND: "ksoftirqd/16" TASK: ffff978e28548000 [THREAD_INFO: ffff978e28548000] CPU: 16 STATE: TASK_RUNNING (PANIC) crash> bt PID: 108 TASK: ffff978e28548000 CPU: 16 COMMAND: "ksoftirqd/16" #0 [ffffa2f14c9a7b18] machine_kexec at ffffffff8f059992 #1 [ffffa2f14c9a7b70] __crash_kexec at ffffffff8f13cf7d #2 [ffffa2f14c9a7c38] crash_kexec at ffffffff8f13e089 #3 [ffffa2f14c9a7c50] oops_end at ffffffff8f027a77 #4 [ffffa2f14c9a7c70] general_protection at ffffffff8fa01635 [exception RIP: rxe_elem_release+15] RIP: ffffffffc08da38f RSP: ffffa2f14c9a7d28 RFLAGS: 00010246 RAX: 0000000000000000 RBX: 860e42124013b0aa RCX: 0000000000000000 RDX: ffff978e03ba8900 RSI: 0000000000000281 RDI: ffff978e02e746e8 RBP: ffff978e02e746e0 R8: 0000000000000201 R9: ffffa2f14dcb9000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 000000000000001d R14: 0000000000000006 R15: ffff978e02e746e0 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #5 [ffffa2f14c9a7d38] rxe_responder at ffffffffc08d7d10 [rdma_rxe] #6 [ffffa2f14c9a7e48] rxe_do_task at ffffffffc08e060b [rdma_rxe] #7 [ffffa2f14c9a7e70] tasklet_action at ffffffff8f0afa1e #8 [ffffa2f14c9a7e88] __softirqentry_text_start at ffffffff8fc000d9 #9 [ffffa2f14c9a7ee0] run_ksoftirqd at ffffffff8f0afa4e #10 [ffffa2f14c9a7ee8] smpboot_thread_fn at ffffffff8f0cca5e #11 [ffffa2f14c9a7f10] kthread at ffffffff8f0c8c9f #12 [ffffa2f14c9a7f50] ret_from_fork at ffffffff8fa00205 crash> mod -s rdma_rxe MODULE NAME SIZE OBJECT FILE ffffffffc08ef240 rdma_rxe 126976 /usr/lib/debug/usr/lib/modules/4.14.97-.el7.centos.x86_64/kernel/drivers/infiniband/sw/rxe/rdma_rxe.ko.debug crash> dis -lr rxe_elem_release+15 /usr/src/debug/kernel--4.14.97-1.el7/linux-4.14.97-.el7.centos.x86_64/drivers/infiniband/sw/rxe/rxe_pool.c: 452 0xffffffffc08da380 <rxe_elem_release>: nopl 0x0(%rax,%rax,1) [FTRACE NOP] 0xffffffffc08da385 <rxe_elem_release+5>: push %rbp /usr/src/debug/kernel--4.14.97-1.el7/linux-4.14.97-.el7.centos.x86_64/drivers/infiniband/sw/rxe/rxe_pool.c: 447 0xffffffffc08da386 <rxe_elem_release+6>: lea -0x8(%rdi),%rbp /usr/src/debug/kernel--4.14.97-1.el7/linux-4.14.97-.el7.centos.x86_64/arch/x86/include/asm/refcount.h: 52 0xffffffffc08da38a <rxe_elem_release+10>: push %rbx 0xffffffffc08da38b <rxe_elem_release+11>: mov -0x8(%rdi),%rbx 0xffffffffc08da38f <rxe_elem_release+15>: mov 0x20(%rbx),%rax crash> quit [root@test 127.0.0.1-2019-11-11-18:59:57]# 433 void *rxe_pool_get_index(struct rxe_pool *pool, u32 index) 434 { 435 struct rb_node *node = NULL; 436 struct rxe_pool_entry *elem = NULL; 437 unsigned long flags; 438 439 spin_lock_irqsave(&pool->pool_lock, flags); 440 441 if (pool->state != rxe_pool_valid) 442 goto out; 443 444 node = pool->tree.rb_node; 445 446 while (node) { 447 elem = rb_entry(node, struct rxe_pool_entry, node); 448 449 if (elem->index > index) 450 node = node->rb_left; 451 else if (elem->index < index) 452 node = node->rb_right; 453 else 454 break; 455 } 456 457 if (node) 458 kref_get(&elem->ref_cnt); 459 460 out: 461 spin_unlock_irqrestore(&pool->pool_lock, flags); 462 return node ? elem : NULL; 463 }
