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| author |   Li Ming <ming.li@zohomail.com> | 2026-03-14 15:06:32 +0800 |
|---|---|---|
| committer |   Dave Jiang <dave.jiang@intel.com> | 2026-03-17 07:54:15 -0700 |
| commit | dc372e5f429ced834d81ff12a945397dc43585a8 (patch) | |
| tree | 9e2392813a3f54e418eac7859b7b1043d6a9cef3 /tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com | |
| parent | Merge tag 'device_lock_cond_guard-7.1-rc1' into for-7.1/cxl-consolidate-endpoint (diff) | |
cxl/pci: Hold memdev lock in cxl_event_trace_record()
cxl_event_config() invokes cxl_mem_get_event_record() to get remain
event logs from CXL device during cxl_pci_probe(). If CXL memdev probing
failed before that, it is possible to access an invalid endpoint. So
adding a cxlmd->driver binding status checking inside
cxl_dpa_to_region() to ensure the corresponding endpoint is valid.
Besides, cxl_event_trace_record() needs to hold memdev lock to invoke
cxl_dpa_to_region() to ensure the memdev probing completed. It is
possible that cxl_event_trace_record() is invoked during the CXL memdev
probing, especially user or cxl_acpi triggers CXL memdev re-probing.
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Li Ming <ming.li@zohomail.com>
Link: https://patch.msgid.link/20260314-fix_access_endpoint_without_drv_check-v2-3-4c09edf2e1db@zohomail.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Diffstat (limited to 'tools/testing/selftests/dm-verity/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions