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| author | Li Zhijian <lizhijian@cn.fujitsu.com> | 2021-07-08 22:45:21 +0800 |
|---|---|---|
| committer | Dr. David Alan Gilbert <dgilbert@redhat.com> | 2021-07-13 16:21:57 +0100 |
| commit | 224f364a49ec88f9710908574393818d964d0593 (patch) | |
| tree | e32c32ed54429e24349170beb84a130998c24865 /migration | |
| parent | 708f50199b59476ec4b45ebcdf171550086d6292 (diff) | |
| download | qemu-224f364a49ec88f9710908574393818d964d0593.zip qemu-224f364a49ec88f9710908574393818d964d0593.tar.gz qemu-224f364a49ec88f9710908574393818d964d0593.tar.bz2 | |
migration/rdma: prevent from double free the same mr
backtrace:
'0x00007ffff5f44ec2 in __ibv_dereg_mr_1_1 (mr=0x7fff1007d390) at /home/lizhijian/rdma-core/libibverbs/verbs.c:478
478 void *addr = mr->addr;
(gdb) bt
#0 0x00007ffff5f44ec2 in __ibv_dereg_mr_1_1 (mr=0x7fff1007d390) at /home/lizhijian/rdma-core/libibverbs/verbs.c:478
#1 0x0000555555891fcc in rdma_delete_block (block=<optimized out>, rdma=0x7fff38176010) at ../migration/rdma.c:691
#2 qemu_rdma_cleanup (rdma=0x7fff38176010) at ../migration/rdma.c:2365
#3 0x00005555558925b0 in qio_channel_rdma_close_rcu (rcu=0x555556b8b6c0) at ../migration/rdma.c:3073
#4 0x0000555555d652a3 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:281
#5 0x0000555555d5edf9 in qemu_thread_start (args=0x7fffe88bb4d0) at ../util/qemu-thread-posix.c:541
#6 0x00007ffff54c73f9 in start_thread () at /lib64/libpthread.so.0
#7 0x00007ffff53f3b03 in clone () at /lib64/libc.so.6 '
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Message-Id: <20210708144521.1959614-1-lizhijian@cn.fujitsu.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Diffstat (limited to 'migration')
| -rw-r--r-- | migration/rdma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/migration/rdma.c b/migration/rdma.c index 38a099f..5c2d113 100644 --- a/migration/rdma.c +++ b/migration/rdma.c @@ -1143,6 +1143,7 @@ static int qemu_rdma_reg_whole_ram_blocks(RDMAContext *rdma) for (i--; i >= 0; i--) { ibv_dereg_mr(local->block[i].mr); + local->block[i].mr = NULL; rdma->total_registrations--; } |