accel/amdxdna: Fix potential NULL pointer dereference of abo->client

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Closing a BO handle clears abo->client, while the underlying GEM object
may remain alive due to internal kernel references. As a result, code
executed after the BO handle is closed may dereference a NULL abo->client
pointer.

Remove accesses to abo->client from code paths that may execute after the
BO handle has been closed.

Fixes: d76856beb4 ("accel/amdxdna: Refactor GEM BO handling and add helper APIs for address retrieval")
Reviewed-by: Max Zhen <max.zhen@amd.com>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260707201556.562191-1-lizhi.hou@amd.com

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This commit is contained in:

Lizhi Hou 2026-07-07 13:15:56 -07:00

parent 44d8fddf1c

commit c69dbbf021

3 changed files with 20 additions and 6 deletions

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4

drivers/accel/amdxdna/aie2_message.c

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11

drivers/accel/amdxdna/amdxdna_gem.c

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11

drivers/accel/amdxdna/amdxdna_gem.h

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