⬢ DragonFlyBSD Kernel Audit
DF-3957 / run.log
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########## FINAL RUN DF-3957 (analysis)
DF-3957 radeon atombios_encoders enc_priv==NULL family (simulation)
enc_priv = radeon_atombios_get_lvds_info() -> NULL (missing LVDS_Info table / OOM)
:742  dig_enc->active_mst_links  READ  at NULL+8
:1085 dig->dig_encoder           READ  at NULL+0
:1744 dig->panel_mode = ...      WRITE at NULL+12
:2663 dig->dig_encoder = -1      WRITE at NULL+0
kernel effect: NULL-page read/write => page fault => panic
NON-CRASH MODE: analysis only. Re-run with 'crash' to execute them.
ANALYSIS_EXIT=0
########## FINAL RUN DF-3957 (crash)
DF-3957 radeon atombios_encoders enc_priv==NULL family (simulation)
enc_priv = radeon_atombios_get_lvds_info() -> NULL (missing LVDS_Info table / OOM)
:742  dig_enc->active_mst_links  READ  at NULL+8
:1085 dig->dig_encoder           READ  at NULL+0
:1744 dig->panel_mode = ...      WRITE at NULL+12
:2663 dig->dig_encoder = -1      WRITE at NULL+0
kernel effect: NULL-page read/write => page fault => panic
child1: :2661-2663 read dig->dig_encoder, then WRITE -1 ...
DF-3957 radeon atombios_encoders enc_priv==NULL family (simulation)
enc_priv = radeon_atombios_get_lvds_info() -> NULL (missing LVDS_Info table / OOM)
:742  dig_enc->active_mst_links  READ  at NULL+8
:1085 dig->dig_encoder           READ  at NULL+0
:1744 dig->panel_mode = ...      WRITE at NULL+12
:2663 dig->dig_encoder = -1      WRITE at NULL+0
kernel effect: NULL-page read/write => page fault => panic
child2: :1744 WRITE dig->panel_mode ...
DF-3957 radeon atombios_encoders enc_priv==NULL family (simulation)
enc_priv = radeon_atombios_get_lvds_info() -> NULL (missing LVDS_Info table / OOM)
:742  dig_enc->active_mst_links  READ  at NULL+8
:1085 dig->dig_encoder           READ  at NULL+0
:1744 dig->panel_mode = ...      WRITE at NULL+12
:2663 dig->dig_encoder = -1      WRITE at NULL+0
kernel effect: NULL-page read/write => page fault => panic
child1 (disable :2661-2663): SIGNALLED sig=11
child2 (dpms_dig :1744): SIGNALLED sig=11
RESULT: NULL-PAGE FAULTS AS PREDICTED (rc=0)
CRASH_EXIT=0