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| author | Maor Gottlieb <[email protected]> | 2020-12-13 15:29:36 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <[email protected]> | 2020-12-14 15:14:27 -0400 |
| commit | e89938902927a54abebccc9537991aca5237dfaf (patch) | |
| tree | 2b2e406a93bf427d3436694b490decb7418bae1c /Documentation/filesystems/caching/backend-api.rst | |
| parent | d21a1240f5169a07a230d72e0e6d3773b2a088b4 (diff) | |
RDMA/mlx5: Fix MR cache memory leak
If the MR cache entry invalidation failed, then we detach this entry from
the cache, therefore we must to free the memory as well.
Allcation backtrace for the leaker:
[<00000000d8e423b0>] alloc_cache_mr+0x23/0xc0 [mlx5_ib]
[<000000001f21304c>] create_cache_mr+0x3f/0xf0 [mlx5_ib]
[<000000009d6b45dc>] mlx5_ib_alloc_implicit_mr+0x41/0×210 [mlx5_ib]
[<00000000879d0d68>] mlx5_ib_reg_user_mr+0x9e/0×6e0 [mlx5_ib]
[<00000000be74bf89>] create_qp+0x2fc/0xf00 [ib_uverbs]
[<000000001a532d22>] ib_uverbs_handler_UVERBS_METHOD_COUNTERS_READ+0x1d9/0×230 [ib_uverbs]
[<0000000070f46001>] rdma_alloc_commit_uobject+0xb5/0×120 [ib_uverbs]
[<000000006d8a0b38>] uverbs_alloc+0x2b/0xf0 [ib_uverbs]
[<00000000075217c9>] ksysioctl+0x234/0×7d0
[<00000000eb5c120b>] __x64_sys_ioctl+0x16/0×20
[<00000000db135b48>] do_syscall_64+0x59/0×2e0
Fixes: 1769c4c57548 ("RDMA/mlx5: Always remove MRs from the cache before destroying them")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Maor Gottlieb <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>
Diffstat (limited to 'Documentation/filesystems/caching/backend-api.rst')
0 files changed, 0 insertions, 0 deletions