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| author | Frederic Barrat <fbarrat@linux.ibm.com> | 2019-12-09 11:55:13 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-12-13 21:59:39 +0100 |
| commit | 913e73c77d48aeeb50c16450a653dca9c71ae2e2 (patch) | |
| tree | c13b7bcc198a1bb8b0b2fa7bde8702faece5206b /drivers/misc/ocxl | |
| parent | powerpc/irq: fix stack overflow verification (diff) | |
| download | linux-913e73c77d48aeeb50c16450a653dca9c71ae2e2.tar.xz linux-913e73c77d48aeeb50c16450a653dca9c71ae2e2.zip | |
ocxl: Fix potential memory leak on context creation
If we couldn't fully init a context, we were leaking memory.
Fixes: b9721d275cc2 ("ocxl: Allow external drivers to use OpenCAPI contexts")
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Acked-by: Andrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191209105513.8566-1-fbarrat@linux.ibm.com
Diffstat (limited to 'drivers/misc/ocxl')
| -rw-r--r-- | drivers/misc/ocxl/context.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/misc/ocxl/context.c b/drivers/misc/ocxl/context.c index 994563a078eb..de8a66b9d76b 100644 --- a/drivers/misc/ocxl/context.c +++ b/drivers/misc/ocxl/context.c @@ -10,18 +10,17 @@ int ocxl_context_alloc(struct ocxl_context **context, struct ocxl_afu *afu, int pasid; struct ocxl_context *ctx; - *context = kzalloc(sizeof(struct ocxl_context), GFP_KERNEL); - if (!*context) + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) return -ENOMEM; - ctx = *context; - ctx->afu = afu; mutex_lock(&afu->contexts_lock); pasid = idr_alloc(&afu->contexts_idr, ctx, afu->pasid_base, afu->pasid_base + afu->pasid_max, GFP_KERNEL); if (pasid < 0) { mutex_unlock(&afu->contexts_lock); + kfree(ctx); return pasid; } afu->pasid_count++; @@ -43,6 +42,7 @@ int ocxl_context_alloc(struct ocxl_context **context, struct ocxl_afu *afu, * duration of the life of the context */ ocxl_afu_get(afu); + *context = ctx; return 0; } EXPORT_SYMBOL_GPL(ocxl_context_alloc); |