[REGRESSION] next boot regression caused by RIP:0010:acpi_find_gpio+0x4b/0x103 kernel panic

[Laura Nao <laura.nao@collabora.com>]

Hello,

KernelCI has identified a next boot regression on the following
Chromebooks, between next-20240416 and next-20240418:
- Lenovo ThinkPad C13 Yoga Chromebook (codename morphius) - kernel
  configuration used [1]
- ASUS Chromebook Flip C436FA (codename helios) - kernel configuration
  used [2]

The following kernel panic is reported in the logs:

[    5.136433] BUG: kernel NULL pointer dereference, address: 0000000000000218
[    5.143393] #PF: supervisor read access in kernel mode
[    5.148529] #PF: error_code(0x0000) - not-present page
[    5.153664] PGD 0 P4D 0 
[    5.156203] Oops: Oops: 0000 [#1] PREEMPT SMP NOPTI
[    5.161080] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.9.0-rc5-next-20240424 #1 a1639945aaee7370a5f0daa79d321d2bc0769584
[    5.172023] Hardware name: LENOVO Morphius/Morphius, BIOS Google_Morphius.13434.60.0 10/08/2020
[    5.180714] RIP: 0010:acpi_find_gpio+0x4b/0x103
[    5.185246] Code: 65 48 8b 04 25 28 00 00 00 48 89 44 24 38 31 c0 48 89 3c 24 e8 24 9a 04 00 48 8b 3c 24 48 8b 74 24 08 84 c0 74 04 48 8d 5f f0 <48> 8b 93 18 02 00 00 48 8d 83 18 02 00 00 31 c9 48 39 c2 75 10 48
[    5.203988] RSP: 0018:ffffa5a0c0033b98 EFLAGS: 00010246
[    5.209212] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffa5a0c0033c24
[    5.216341] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8a90c02a5420
[    5.223470] RBP: ffffa5a0c0033c24 R08: ffffa5a0c0033c28 R09: fffffffffffcc098
[    5.230599] R10: ffffffff96054f10 R11: fefefefefefefeff R12: ffff8a90c0ba6410
[    5.237728] R13: ffffa5a0c0033c28 R14: ffffffff95da5d86 R15: 0000000000000000
[    5.244857] FS:  0000000000000000(0000) GS:ffff8a90eae00000(0000) knlGS:0000000000000000
[    5.252940] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.258684] CR2: 0000000000000218 CR3: 00000000b2a2e000 CR4: 00000000003506f0
[    5.265813] Call Trace:
[    5.268262]  <TASK>
[    5.270367]  ? __die_body+0x1b/0x5d
[    5.273861]  ? page_fault_oops+0x340/0x3dc
[    5.277957]  ? prb_read_valid+0x14/0x1a
[    5.281794]  ? srso_return_thunk+0x5/0x5f
[    5.285806]  ? console_unlock+0x91/0xc0
[    5.289644]  ? exc_page_fault+0x1e2/0x502
[    5.293658]  ? asm_exc_page_fault+0x22/0x30
[    5.297846]  ? acpi_find_gpio+0x4b/0x103
[    5.301769]  ? acpi_find_gpio+0x3a/0x103
[    5.305694]  ? kvasprintf+0x77/0xba
[    5.309186]  gpiod_find_and_request+0xd5/0x395
[    5.313634]  devm_fwnode_gpiod_get_index+0x76/0xb1
[    5.318427]  gpio_keys_probe+0x43f/0x933
[    5.322353]  ? srso_return_thunk+0x5/0x5f
[    5.326365]  ? acpi_dev_pm_attach+0x96/0xb8
[    5.330551]  ? __device_attach_driver+0x93/0x93
[    5.335083]  platform_probe+0x3e/0x83
[    5.338748]  really_probe+0x111/0x261
[    5.342411]  __driver_probe_device+0xc5/0xf9
[    5.346683]  driver_probe_device+0x1e/0x77
[    5.350778]  __driver_attach+0xce/0xe7
[    5.354530]  bus_for_each_dev+0x7c/0xc2
[    5.358366]  ? kmalloc_trace_noprof+0x150/0x163
[    5.362897]  bus_add_driver+0xf4/0x1e6
[    5.366650]  driver_register+0xa6/0xe8
[    5.370401]  ? atkbd_init+0x26/0x26
[    5.373892]  do_one_initcall+0x80/0x1d9
[    5.377730]  kernel_init_freeable+0x1be/0x206
[    5.382088]  ? rest_init+0xbc/0xbc
[    5.385491]  kernel_init+0x16/0x119
[    5.388981]  ret_from_fork+0x24/0x38
[    5.392558]  ? rest_init+0xbc/0xbc
[    5.395961]  ret_from_fork_asm+0x11/0x20
[    5.399887]  </TASK>
[    5.402075] Modules linked in:
[    5.405133] CR2: 0000000000000218
[    5.408450] ---[ end trace 0000000000000000 ]---
[    5.413064] RIP: 0010:acpi_find_gpio+0x4b/0x103
[    5.417592] Code: 65 48 8b 04 25 28 00 00 00 48 89 44 24 38 31 c0 48 89 3c 24 e8 24 9a 04 00 48 8b 3c 24 48 8b 74 24 08 84 c0 74 04 48 8d 5f f0 <48> 8b 93 18 02 00 00 48 8d 83 18 02 00 00 31 c9 48 39 c2 75 10 48
[    5.436334] RSP: 0018:ffffa5a0c0033b98 EFLAGS: 00010246
[    5.441558] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffa5a0c0033c24
[    5.448687] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8a90c02a5420
[    5.455816] RBP: ffffa5a0c0033c24 R08: ffffa5a0c0033c28 R09: fffffffffffcc098
[    5.462945] R10: ffffffff96054f10 R11: fefefefefefefeff R12: ffff8a90c0ba6410
[    5.470074] R13: ffffa5a0c0033c28 R14: ffffffff95da5d86 R15: 0000000000000000
[    5.477203] FS:  0000000000000000(0000) GS:ffff8a90eae00000(0000) knlGS:0000000000000000
[    5.485286] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.491026] CR2: 0000000000000218 CR3: 00000000b2a2e000 CR4: 00000000003506f0
[    5.498155] Kernel panic - not syncing: Fatal exception


The issue is still present on next-20240426.

Sending this report in order to track the regression while a fix is
identified.

Best,

Laura

[1] https://pastebin.com/raw/C8ZVg4s2 
[2] https://pastebin.com/raw/iej1hNWw

#regzbot introduced: next-20240416..next-20240418