wifi: mt76: mt7921e: fix crash in chip reset fail
In case of drv own fail in reset, we may need to run mac_reset several
times. The sequence would trigger system crash as the log below.
Because we do not re-enable/schedule "tx_napi" before disable it again,
the process would keep waiting for state change in napi_diable(). To
avoid the problem and keep status synchronize for each run, goto final
resource handling if drv own failed.
[ 5857.353423] mt7921e 0000:3b:00.0: driver own failed
[ 5858.433427] mt7921e 0000:3b:00.0: Timeout for driver own
[ 5859.633430] mt7921e 0000:3b:00.0: driver own failed
[ 5859.633444] ------------[ cut here ]------------
[ 5859.633446] WARNING: CPU: 6 at kernel/kthread.c:659 kthread_park+0x11d
[ 5859.633717] Workqueue: mt76 mt7921_mac_reset_work [mt7921_common]
[ 5859.633728] RIP: 0010:kthread_park+0x11d/0x150
[ 5859.633736] RSP: 0018:ffff8881b676fc68 EFLAGS: 00010202
......
[ 5859.633766] Call Trace:
[ 5859.633768] <TASK>
[ 5859.633771] mt7921e_mac_reset+0x176/0x6f0 [mt7921e]
[ 5859.633778] mt7921_mac_reset_work+0x184/0x3a0 [mt7921_common]
[ 5859.633785] ? mt7921_mac_set_timing+0x520/0x520 [mt7921_common]
[ 5859.633794] ? __kasan_check_read+0x11/0x20
[ 5859.633802] process_one_work+0x7ee/0x1320
[ 5859.633810] worker_thread+0x53c/0x1240
[ 5859.633818] kthread+0x2b8/0x370
[ 5859.633824] ? process_one_work+0x1320/0x1320
[ 5859.633828] ? kthread_complete_and_exit+0x30/0x30
[ 5859.633834] ret_from_fork+0x1f/0x30
[ 5859.633842] </TASK>
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Thu, 18 Sep 2025 17:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | NVD-CWE-noinfo | |
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.0:rc4:*:*:*:*:*:* |
Thu, 19 Dec 2024 09:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2026-05-23T15:20:30.981Z
Reserved: 2024-05-03T14:55:07.146Z
Link: CVE-2022-48705
Updated: 2024-08-03T15:17:55.854Z
Status : Analyzed
Published: 2024-05-03T18:15:08.403
Modified: 2025-09-19T14:43:59.973
Link: CVE-2022-48705
OpenCVE Enrichment
Updated: 2025-07-12T15:42:35Z