diff options
| author | Aaron Ma <[email protected]> | 2023-01-16 23:22:35 +0800 |
|---|---|---|
| committer | Felix Fietkau <[email protected]> | 2023-02-03 14:47:17 +0100 |
| commit | 888d89034f9eaeab9b5b75f13dbe35376c7dd471 (patch) | |
| tree | dc9ba729c366b76b3e35aefe582f731c5e476498 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | a97a467a4421babc218bd3546b093e4e84027487 (diff) | |
wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read
Kernel NULL pointer dereference when ACPI SAR table isn't implemented well.
Fix the error code of return to mark the ACPI SAR table as invalid.
[ 5.077128] mt7921e 0000:06:00.0: sar cnt = 0
[ 5.077381] BUG: kernel NULL pointer dereference, address:
0000000000000004
[ 5.077630] #PF: supervisor read access in kernel mode
[ 5.077883] #PF: error_code(0x0000) - not-present page
[ 5.078138] PGD 0 P4D 0
[ 5.078398] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 5.079202] RIP: 0010:mt7921_init_acpi_sar+0x106/0x220
[mt7921_common]
...
[ 5.080786] Call Trace:
[ 5.080786] <TASK>
[ 5.080786] mt7921_register_device+0x37d/0x490 [mt7921_common]
[ 5.080786] mt7921_pci_probe.part.0+0x2ee/0x310 [mt7921e]
[ 5.080786] mt7921_pci_probe+0x52/0x70 [mt7921e]
[ 5.080786] local_pci_probe+0x47/0x90
[ 5.080786] pci_call_probe+0x55/0x190
[ 5.080786] pci_device_probe+0x84/0x120
Fixes: f965333e491e ("mt76: mt7921: introduce ACPI SAR support")
Signed-off-by: Aaron Ma <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions