A change in the mm/slub code identified that the arch/mips/ralink/mt7621.c soc_dev_init function attempted to kzalloc too early. https://lore.kernel.org/linux-mm/becf2ac3-2a90-4f3a-96d9-a70f67c66e4a@xxxxxxxxxxxxxxxx/ RFC fix: https://lore.kernel.org/lkml/20221103050538.1930758-1-git@xxxxxxxxxxxxxxxxxxxxxxxxxxx/ Fixing that mips mt7621 issue exposes an oops in testing the quirk table. I think we do want these changes committed before the mt7621 kzalloc too early fix, otherwise I introduce oops. Checkpatch warns on the pci Fixes tag, and suggests my change for the Fixes tag. I am not sure if we want these backported to stable trees? Then, if I need separate patches for the staging drivers in 5.10 pci-phy and 5.15 pci? Oops example after the mt7621 kzalloc too early fix atop v6.1-rc2 >From Sergio Paracuellos in https://lore.kernel.org/lkml/CAMhs-H-Eo0ELMpy0iPakTA-3nHdY_mYQG-rrqgSotBKKED=eOg@xxxxxxxxxxxxxx/ [ 20.569959] CPU 0 Unable to handle kernel paging request at virtual address 675f6b6c, epc == 80403dec, ra == 804ae11c [ 20.591060] Oops[#1]: [ 20.595462] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc1+ #148 [ 20.608265] $ 0 : 00000000 00000001 82262a00 00000000 [ 20.618615] $ 4 : 675f6b6c 808dea04 00000000 804ae138 [ 20.628983] $ 8 : 00000000 808787ba 00000000 821f4b00 [ 20.639351] $12 : 0000005b 0000005d 0000002d 0000005c [ 20.649735] $16 : 82253580 807b4034 807b4034 804ae138 [ 20.660087] $20 : fffffff4 82c382b8 809e1094 00000008 [ 20.670455] $24 : 0000002a 0000003f [ 20.680823] $28 : 82050000 82051c30 80a0d638 804ae11c [ 20.691190] Hi : 00000037 [ 20.696891] Lo : 5c28f6a0 [ 20.702610] epc : 80403dec glob_match+0x1c/0x240 [ 20.712100] ra : 804ae11c soc_device_match_attr+0xac/0xc8 [ 20.723330] Status: 11000403 KERNEL EXL IE [ 20.731626] Cause : 40800008 (ExcCode 02) [ 20.739576] BadVA : 675f6b6c [ 20.745277] PrId : 0001992f (MIPS 1004Kc) [ 20.753414] Modules linked in: [ 20.759448] Process swapper/0 (pid: 1, threadinfo=(ptrval), task=(ptrval), tls=00000000) [ 20.775520] Stack : fffffff4 80496ab8 820c6010 828c8518 80950000 ffffffea 80950000 80496b48 [ 20.792106] 00000000 828c8400 820c6010 821f4880 1e160000 821bc754 82253734 7f8268e6 [ 20.808707] 809c6a94 807b4034 804ae138 809c8e88 819a0000 804ae1d8 80a0d638 80438e10 [ 20.825282] 821f3e70 80950000 808c0000 828c8400 820c6000 828c8548 820c6010 80456608 [ 20.841879] 821f3dc0 821d32c0 819a0000 801d8768 821f3dc0 821d32c0 828c8540 80950000 [ 20.858473] ... [ 20.863298] Call Trace: [ 20.868137] [<80403dec>] glob_match+0x1c/0x240 [ 20.876955] [<804ae11c>] soc_device_match_attr+0xac/0xc8 [ 20.887500] [<80496b48>] bus_for_each_dev+0x7c/0xc0 [ 20.897176] [<804ae1d8>] soc_device_match+0x98/0xc8 [ 20.906869] [<80456608>] mt7621_pcie_probe+0x90/0x7b8 [ 20.916876] [<8049b46c>] platform_probe+0x54/0x94 [ 20.926206] [<80499058>] really_probe+0x200/0x434 [ 20.935538] [<80499520>] driver_probe_device+0x44/0xd4 [ 20.945732] [<80499ae0>] __driver_attach+0xb8/0x1b0 [ 20.955428] [<80496b48>] bus_for_each_dev+0x7c/0xc0 [ 20.965089] [<80497f18>] bus_add_driver+0x100/0x218 [ 20.974763] [<8049a338>] driver_register+0xd0/0x118 [ 20.984438] [<80001590>] do_one_initcall+0x8c/0x28c [ 20.994115] [<809e21c8>] kernel_init_freeable+0x254/0x28c [ 21.004845] [<80781070>] kernel_init+0x24/0x118 [ 21.013830] [<800034f8>] ret_from_kernel_thread+0x14/0x1c [ 21.024522] [ 21.027457] Code: 240f005c 2418002a 2419003f <80820000> 24a90001 90a70000 104c006f 24860001 2843005c [ 21.046810] [ 21.049830] ---[ end trace 0000000000000000 ]--- [ 21.058935] Kernel panic - not syncing: Fatal exception [ 21.069310] Rebooting in 1 seconds.. Cheers, John
