** Changed in: linux-oem-6.11 (Ubuntu Noble)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2089199
Title:
Boot hangs with cs42l43 soundwire codec
Status in HWE Next:
New
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux-oem-6.11 source package in Noble:
Fix Committed
Bug description:
[Impact]
May encounter the kernel oops and hangs during booting up
[ 4.402320] kernel: Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 4.402323] kernel: CPU: 2 UID: 0 PID: 251 Comm: kworker/2:4 Tainted: G
O 6.11.0-1007-oem #7-Ubuntu
[ 4.402325] kernel: Tainted: [O]=OOT_MODULE
[ 4.402326] kernel: Hardware name: Dell Inc. Dell Pro 14 Plus PB14250/,
BIOS 0.7.53 11/15/2024
[ 4.402327] kernel: Workqueue: events request_firmware_work_func
[ 4.402331] kernel: RIP: 0010:__dev_printk+0x23/0xa0
[ 4.402334] kernel: Code: 90 90 90 90 90 90 90 0f 1f 44 00 00 55 49 89 d1
48 89 e5 48 85 f6 74 68 4c 8b 46 50 4d 85 c0 74 35 48 8b 46 68 48 85 c0 74 38
<48> 8b 08 0f b6 7f 01 48 c7 c2 59 8b 3d b7 83 ef 30 e8 f7 ee ff ff
[ 4.402335] kernel: RSP: 0018:ffffc0a0c091fa98 EFLAGS: 00010202
[ 4.402336] kernel: RAX: 0000000000000001 RBX: 0000000036c41700 RCX:
ffffc0a0c091fb18
[ 4.402337] kernel: RDX: ffffc0a0c091faa8 RSI: ffff9fd9cb145400 RDI:
ffffffffb73acdfa
[ 4.402338] kernel: RBP: ffffc0a0c091fa98 R08: 0000000000000318 R09:
ffffc0a0c091faa8
[ 4.402339] kernel: R10: 0000000000000003 R11: 0000000000000000 R12:
0000000000000008
[ 4.402339] kernel: R13: ffffc0a0c091fc00 R14: ffff9fd9e2c8d028 R15:
000000000000001c
[ 4.402340] kernel: FS: 0000000000000000(0000) GS:ffff9fdd3f700000(0000)
knlGS:0000000000000000
[ 4.402341] kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4.402342] kernel: CR2: 0000000000000001 CR3: 0000000104014001 CR4:
0000000000f70ef0
[ 4.402343] kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 4.402343] kernel: DR3: 0000000000000000 DR6: 00000000ffff07f0 DR7:
0000000000000400
[ 4.402344] kernel: PKRU: 55555554
[ 4.402344] kernel: Call Trace:
[ 4.402346] kernel: <TASK>
[ 4.402348] kernel: ? show_regs+0x6c/0x80
[ 4.402351] kernel: ? __die+0x24/0x80
[ 4.402352] kernel: ? page_fault_oops+0x96/0x1b0
[ 4.402355] kernel: ? do_user_addr_fault+0x4b2/0x870
[ 4.402356] kernel: ? exc_page_fault+0x85/0x1c0
[ 4.402359] kernel: ? asm_exc_page_fault+0x27/0x30
[ 4.402362] kernel: ? __dev_printk+0x23/0xa0
[ 4.402363] kernel: _dev_err+0x75/0xa0
[ 4.402368] kernel: _cdns_xfer_msg+0x17a/0x1c0 [soundwire_cadence]
[ 4.402371] kernel: cdns_xfer_msg+0x90/0xf0 [soundwire_cadence]
[ 4.402373] kernel: sdw_transfer_unlocked+0x62/0xf0 [soundwire_bus]
[ 4.402378] kernel: sdw_ntransfer_no_pm+0xce/0x140 [soundwire_bus]
[ 4.402381] kernel: sdw_nwrite_no_pm+0x19/0x30 [soundwire_bus]
[ 4.402384] kernel: regmap_sdw_gather_write+0x17/0x30 [regmap_sdw]
[ 4.402386] kernel: _regmap_raw_write_impl+0x623/0x980
[ 4.402388] kernel: _regmap_raw_write+0xc4/0x1a0
[ 4.402389] kernel: regmap_raw_write+0x71/0xa0
[ 4.402390] kernel: regmap_bulk_write+0xa9/0x260
[ 4.402392] kernel: cs42l43_mcu_load_firmware+0x7c/0x1b0 [cs42l43]
[ 4.402393] kernel: request_firmware_work_func+0x53/0xb0
[ 4.402394] kernel: process_one_work+0x178/0x3d0
[ 4.402397] kernel: worker_thread+0x2de/0x410
[ 4.402398] kernel: ? _raw_spin_lock_irqsave+0xe/0x20
[ 4.402399] kernel: ? __pfx_worker_thread+0x10/0x10
[ 4.402400] kernel: kthread+0xe1/0x110
[ 4.402402] kernel: ? __pfx_kthread+0x10/0x10
[ 4.402403] kernel: ret_from_fork+0x44/0x70
[ 4.402404] kernel: ? __pfx_kthread+0x10/0x10
[ 4.402405] kernel: ret_from_fork_asm+0x1a/0x30
[ 4.402408] kernel: </TASK>
[Fix]
The cs42l43_dev_remove(cs42l43) could be called during booting up, and then
leads to the loading firmware process fails.
e59148b784fb mfd: cs42l43: Fix issues in probe error paths
[Test]
Reboot the machine with cs42l43 soundwire codec multiple times(20+), and it
should not hang.
[Where problems could occur]
No, the cs42l43_dev_remove(cs42l43) will be called when cs42l43_sdw_remove()
is called. So, it should not lead to any regression.
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