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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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941224e094
When a kernel ULP requests the rdmavt to create a completion queue, it
allocated the queue and set cq->kqueue to point to it. However, when the
completion queue is destroyed, cq->queue is freed instead, leading to a
memory leak:
https://lore.kernel.org/r/215235485.15264050.1583334487658.JavaMail.zimbra@redhat.com
unreferenced object 0xffffc90006639000 (size 12288):
comm "kworker/u128:0", pid 8, jiffies 4295777598 (age 589.085s)
hex dump (first 32 bytes):
4d 00 00 00 4d 00 00 00 00 c0 08 ac 8b 88 ff ff M...M...........
00 00 00 00 80 00 00 00 00 00 00 00 10 00 00 00 ................
backtrace:
[<0000000035a3d625>] __vmalloc_node_range+0x361/0x720
[<000000002942ce4f>] __vmalloc_node.constprop.30+0x63/0xb0
[<00000000f228f784>] rvt_create_cq+0x98a/0xd80 [rdmavt]
[<00000000b84aec66>] __ib_alloc_cq_user+0x281/0x1260 [ib_core]
[<00000000ef3764be>] nvme_rdma_cm_handler+0xdb7/0x1b80 [nvme_rdma]
[<00000000936b401c>] cma_cm_event_handler+0xb7/0x550 [rdma_cm]
[<00000000d9c40b7b>] addr_handler+0x195/0x310 [rdma_cm]
[<00000000c7398a03>] process_one_req+0xdd/0x600 [ib_core]
[<000000004d29675b>] process_one_work+0x920/0x1740
[<00000000efedcdb5>] worker_thread+0x87/0xb40
[<000000005688b340>] kthread+0x327/0x3f0
[<0000000043a168d6>] ret_from_fork+0x3a/0x50
This patch fixes the issue by freeing cq->kqueue instead.
Fixes:
|
||
|---|---|---|
| .. | ||
| ah.c | ||
| ah.h | ||
| cq.c | ||
| cq.h | ||
| Kconfig | ||
| mad.c | ||
| mad.h | ||
| Makefile | ||
| mcast.c | ||
| mcast.h | ||
| mmap.c | ||
| mmap.h | ||
| mr.c | ||
| mr.h | ||
| pd.c | ||
| pd.h | ||
| qp.c | ||
| qp.h | ||
| rc.c | ||
| srq.c | ||
| srq.h | ||
| trace_cq.h | ||
| trace_mr.h | ||
| trace_qp.h | ||
| trace_rc.h | ||
| trace_rvt.h | ||
| trace_tx.h | ||
| trace.c | ||
| trace.h | ||
| vt.c | ||
| vt.h | ||