https://bugzilla.kernel.org/show_bug.cgi?id=214847 Bug ID: 214847 Summary: [radeon] UBSAN shows several null-ptr-deref in drm/radeon/atom.c, radeon_atombios.c, atombios_encoders.c, atombios_crtc.c Product: Drivers Version: 2.5 Kernel Version: 5.15-rc7 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: erhard_f@xxxxxxxxxxx CC: christian.koenig@xxxxxxx Regression: No Created attachment 299331 --> https://bugzilla.kernel.org/attachment.cgi?id=299331&action=edit kernel dmesg (kernel 5.15-rc7, AMD Ryzen 9 5950X) [...] [drm] radeon kernel modesetting enabled. checking generic (e0000000 300000) vs hw (e0000000 10000000) fb0: switching to radeon from simple Console: switching to colour dummy device 80x25 radeon 0000:07:00.0: vgaarb: deactivate vga console [drm] initializing kernel modesetting (RV515 0x1002:0x7187 0x174B:0x3000 0x00). ATOM BIOS: X1550 ================================================================================ UBSAN: null-ptr-deref in drivers/gpu/drm/radeon/atom.c:1400:14 member access within null pointer of type 'ATOM_MASTER_LIST_OF_DATA_TABLES' (aka 'struct _ATOM_MASTER_LIST_OF_DATA_TABLES') CPU: 26 PID: 418 Comm: systemd-udevd Not tainted 5.15.0-rc7-Zen3+ #5 Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./B450M Steel Legend, BIOS P4.20 08/03/2021 Call Trace: dump_stack_lvl+0x7f/0xc0 ubsan_type_mismatch_common+0x248/0x290 __ubsan_handle_type_mismatch_v1+0x49/0x50 atom_allocate_fb_scratch+0x2b/0xf0 [radeon] radeon_atombios_init+0x113/0x130 [radeon] rv515_init+0x5b/0x250 [radeon] radeon_device_init+0x99a/0xe00 [radeon] radeon_driver_load_kms+0xb8/0x1a0 [radeon] drm_dev_register+0xec/0x1d0 [drm] radeon_pci_probe+0xaa/0x100 [radeon] pci_device_probe+0xaa/0x140 really_probe+0x111/0x360 __driver_probe_device+0x84/0xf0 __driver_attach+0xbb/0x120 ? driver_attach+0x20/0x20 bus_for_each_dev+0x93/0xd0 bus_add_driver+0xf5/0x200 driver_register+0x66/0xf0 do_one_initcall+0x11a/0x2e0 ? __kernel_text_address+0x56/0xa0 ? 0xffffffffc0760000 ? mmu_interval_notifier_insert+0xa/0xa0 do_init_module+0x55/0x200 load_module+0x1b50/0x1ee0 ? kernel_read_file_from_fd+0x58/0x80 __x64_sys_finit_module+0xa8/0xd0 do_syscall_64+0x79/0xb0 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5c569992c9 Code: 0c 00 b8 ca 00 00 00 0f 05 eb a4 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 6f 1b 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffe2a4aefe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000558584ea2070 RCX: 00007f5c569992c9 RDX: 0000000000000000 RSI: 00007f5c56adc97f RDI: 0000000000000016 RBP: 0000000000020000 R08: 0000000000000000 R09: fffffffffffffeb8 R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5c56adc97f R14: 0000558584e510c0 R15: 0000000000000000 ================================================================================ ================================================================================ UBSAN: null-ptr-deref in drivers/gpu/drm/radeon/radeon_atombios.c:1126:14 member access within null pointer of type 'ATOM_MASTER_LIST_OF_DATA_TABLES' (aka 'struct _ATOM_MASTER_LIST_OF_DATA_TABLES') CPU: 26 PID: 418 Comm: systemd-udevd Not tainted 5.15.0-rc7-Zen3+ #5 Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./B450M Steel Legend, BIOS P4.20 08/03/2021 Call Trace: dump_stack_lvl+0x7f/0xc0 ubsan_type_mismatch_common+0x248/0x290 __ubsan_handle_type_mismatch_v1+0x49/0x50 radeon_atom_get_clock_info+0x2e/0x410 [radeon] ? atom_allocate_fb_scratch+0xa7/0xf0 [radeon] radeon_get_clock_info+0x170/0x470 [radeon] rv515_init+0xa0/0x250 [radeon] radeon_device_init+0x99a/0xe00 [radeon] radeon_driver_load_kms+0xb8/0x1a0 [radeon] drm_dev_register+0xec/0x1d0 [drm] radeon_pci_probe+0xaa/0x100 [radeon] pci_device_probe+0xaa/0x140 really_probe+0x111/0x360 __driver_probe_device+0x84/0xf0 __driver_attach+0xbb/0x120 ? driver_attach+0x20/0x20 bus_for_each_dev+0x93/0xd0 bus_add_driver+0xf5/0x200 driver_register+0x66/0xf0 do_one_initcall+0x11a/0x2e0 ? __kernel_text_address+0x56/0xa0 ? 0xffffffffc0760000 ? mmu_interval_notifier_insert+0xa/0xa0 do_init_module+0x55/0x200 load_module+0x1b50/0x1ee0 ? kernel_read_file_from_fd+0x58/0x80 __x64_sys_finit_module+0xa8/0xd0 do_syscall_64+0x79/0xb0 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f5c569992c9 Code: 0c 00 b8 ca 00 00 00 0f 05 eb a4 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 6f 1b 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007ffe2a4aefe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 RAX: ffffffffffffffda RBX: 0000558584ea2070 RCX: 00007f5c569992c9 RDX: 0000000000000000 RSI: 00007f5c56adc97f RDI: 0000000000000016 RBP: 0000000000020000 R08: 0000000000000000 R09: fffffffffffffeb8 R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f5c56adc97f R14: 0000558584e510c0 R15: 0000000000000000 ================================================================================ [...] -- You may reply to this email to add a comment. 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