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    SubjectRe: 4.18: early boot crash in thermal_cooling_device_destroy_sysfs
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    Hi, Randy,

    On 五, 2018-10-26 at 20:35 -0700, Randy Dunlap wrote:
    > On 10/26/18 2:14 AM, Rafael J. Wysocki wrote:
    > >
    > > On Monday, October 22, 2018 8:37:25 PM CEST Randy Dunlap wrote:
    > > >
    > > >
    > > > On 8/16/18 2:33 PM, Randy Dunlap wrote:
    > > > >
    > > > > Hi,
    > > > >
    > > > > Sorry for the photo.  That's all I have available so far.
    > > > >
    > > > > https://www.infradead.org/~rdunlap/doc/IMG_20180816_133254743_H
    > > > > DR.jpg
    > > > >
    > > > >
    > > > > Does anyone recognize this?
    > > > >
    > > > > This is an (older) Toshiba laptop.  The kernel .config is
    > > > > mostly an
    > > > > allmodconfig with some DEBUG options disabled and other options
    > > > > enabled
    > > > > so that it can boot without using an initramfs.  (and with
    > > > > COMPILE_TEST
    > > > > disabled :)
    > > > >
    > > > >
    > > > > The full kernel .config file is attached.
    > > > >
    > > > > Thanks,
    > > > >
    > > > This is a result of CONFIG_DEBUG_TEST_DRIVER_REMOVE=y.
    > > > [switch from 64-bit to 32-bit machine]
    > > >
    > > >
    > > > When using CONFIG_DEBUG_VM=y, it BUGs at:
    > > > [    5.553603] ------------[ cut here ]------------
    > > > [    5.553733] kernel BUG at arch/x86/mm/physaddr.c:75!
    > > > [    5.557788] invalid opcode: 0000 [#1] PREEMPT SMP
    > > > DEBUG_PAGEALLOC
    > > > [    5.558738] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.19.0-
    > > > rc7 #4
    > > > [    5.558738] Hardware name: Dell Inc. Inspiron
    > > > 1318                   /0C236D, BIOS A04 01/15/2009
    > > > [    5.558738] EIP: __phys_addr+0x40/0x90
    > > > [    5.558738] Code: 00 40 75 2e 8b 15 00 57 23 d5 85 d2 74 12 89
    > > > d9 c1 e9 0c 39 ca 72 5b e8 2e ca ff ff 39 d8 75 4a 89 d8 5b 5d c3
    > > > 8d 74 26 00 90 <0f> 0b 8d b6 00 00 00 00 8b 0d 80 56 23 d5 8d 91
    > > > 00 00 80 00 39 d0
    > > > [    5.558738] EAX: 6b6b6b6b EBX: 6b6b6b6b ECX: 00140011 EDX:
    > > > 00000000
    > > > [    5.558738] ESI: f4890000 EDI: d4a58d60 EBP: f40c1e0c ESP:
    > > > f40c1e08
    > > > [    5.558738] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
    > > > EFLAGS: 00210a97
    > > > [    5.558738] CR0: 80050033 CR2: 00000000 CR3: 14cad000 CR4:
    > > > 000406d0
    > > > [    5.558738] Call Trace:
    > > > [    5.558738]  kfree+0x1f/0x160
    > > > [    5.558738]  thermal_cooling_device_destroy_sysfs+0x11/0x20
    > > > [    5.558738]  thermal_cooling_device_unregister+0x168/0x180
    > > > [    5.558738]  acpi_pss_perf_exit.isra.4+0x32/0x50
    > > > [    5.558738]  acpi_processor_stop+0x4d/0x60
    > > > [    5.558738]  really_probe+0xa3/0x3e0
    > > > [    5.558738]  driver_probe_device+0x5b/0x120
    > > > [    5.558738]  __driver_attach+0xd9/0x100
    > > > [    5.558738]  ? driver_probe_device+0x120/0x120
    > > > [    5.558738]  bus_for_each_dev+0x56/0x90
    > > > [    5.558738]  driver_attach+0x14/0x20
    > > > [    5.558738]  ? driver_probe_device+0x120/0x120
    > > > [    5.558738]  bus_add_driver+0x117/0x210
    > > > [    5.558738]  driver_register+0x61/0xb0
    > > > [    5.558738]  acpi_processor_driver_init+0x19/0x88
    > > > [    5.558738]  ? acpi_pci_slot_init+0xf/0xf
    > > > [    5.558738]  do_one_initcall+0x3e/0x15a
    > > > [    5.558738]  ? do_early_param+0x75/0x75
    > > > [    5.558738]  kernel_init_freeable+0x170/0x1f3
    > > > [    5.558738]  ? rest_init+0xcd/0xcd
    > > > [    5.558738]  kernel_init+0x8/0xdb
    > > > [    5.558738]  ret_from_fork+0x2e/0x38
    > > > [    5.558738] Modules linked in:
    > > > [    5.625269] _warn_unseeded_randomness: 1 callbacks suppressed
    > > > [    5.625272] random: get_random_bytes called from
    > > > init_oops_id+0x3a/0x40 with crng_init=0
    > > > [    5.629758] ---[ end trace 65b17bf4d18e7692 ]---
    > > > [    5.631573] EIP: __phys_addr+0x40/0x90
    > > > [    5.633242] Code: 00 40 75 2e 8b 15 00 57 23 d5 85 d2 74 12 89
    > > > d9 c1 e9 0c 39 ca 72 5b e8 2e ca ff ff 39 d8 75 4a 89 d8 5b 5d c3
    > > > 8d 74 26 00 90 <0f> 0b 8d b6 00 00 00 00 8b 0d 80 56 23 d5 8d 91
    > > > 00 00 80 00 39 d0
    > > > [    5.638618] EAX: 6b6b6b6b EBX: 6b6b6b6b ECX: 00140011 EDX:
    > > > 00000000
    > > > [    5.640703] ESI: f4890000 EDI: d4a58d60 EBP: f40c1e0c ESP:
    > > > d4cb13dc
    > > > [    5.642801] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
    > > > EFLAGS: 00210a97
    > > > [    5.645053] CR0: 80050033 CR2: 00000000 CR3: 14cad000 CR4:
    > > > 000406d0
    > > > [    5.647179] Kernel panic - not syncing: Fatal exception
    > > > [    5.648172] Kernel Offset: 0x13000000 from 0xc1000000
    > > > (relocation range: 0xc0000000-0xf77fdfff)
    > > > [    5.648172] ---[ end Kernel panic - not syncing: Fatal
    > > > exception ]---
    > > >
    > > >
    > > > When not using CONFIG_DEBUG_VM, it BUGs in kfree:
    > > > [    5.497864] ------------[ cut here ]------------
    > > > [    5.498215] kernel BUG at mm/slub.c:3901!
    > > > [    5.501739] invalid opcode: 0000 [#1] PREEMPT SMP
    > > > [    5.502720] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0-
    > > > rc7 #3
    > > > [    5.502720] Hardware name: Dell Inc. Inspiron
    > > > 1318                   /0C236D, BIOS A04 01/15/2009
    > > > [    5.502720] EIP: kfree+0x117/0x150
    > > > [    5.502720] Code: 74 21 8b 06 31 d2 f6 c4 80 74 04 0f b6 56 31
    > > > 89 f0 e8 7d e0 fa ff e9 7b ff ff ff 8d b4 26 00 00 00 00 90 8b 46
    > > > 04 a8 01 75 d8 <0f> 0b 8d b4 26 00 00 00 00 8b 75 f0 ff 75 ec 89
    > > > d9 89 f8 6a 01 53
    > > > [    5.502720] EAX: 00000100 EBX: 6b6b6b6b ECX: 00140011 EDX:
    > > > 00000000
    > > > [    5.502720] ESI: f67dac70 EDI: ccc4aca0 EBP: f4083e28 ESP:
    > > > f4083e10
    > > > [    5.502720] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
    > > > EFLAGS: 00210246
    > > > [    5.502720] CR0: 80050033 CR2: ffd14000 CR3: 0ce94000 CR4:
    > > > 000406d0
    > > > [    5.502720] Call Trace:
    > > > [    5.502720]  thermal_cooling_device_destroy_sysfs+0x11/0x20
    > > > [    5.502720]  thermal_cooling_device_unregister+0x168/0x180
    > > > [    5.502720]  acpi_pss_perf_exit.isra.4+0x32/0x50
    > > > [    5.502720]  acpi_processor_stop+0x4d/0x60
    > > > [    5.502720]  really_probe+0xa3/0x3e0
    > > > [    5.502720]  driver_probe_device+0x5b/0x120
    > > > [    5.502720]  __driver_attach+0xd9/0x100
    > > > [    5.502720]  ? driver_probe_device+0x120/0x120
    > > > [    5.502720]  bus_for_each_dev+0x56/0x90
    > > > [    5.502720]  driver_attach+0x14/0x20
    > > > [    5.502720]  ? driver_probe_device+0x120/0x120
    > > > [    5.502720]  bus_add_driver+0x117/0x210
    > > > [    5.502720]  driver_register+0x61/0xb0
    > > > [    5.502720]  acpi_processor_driver_init+0x19/0x88
    > > > [    5.502720]  ? acpi_pci_slot_init+0xf/0xf
    > > > [    5.502720]  do_one_initcall+0x3e/0x15a
    > > > [    5.502720]  ? do_early_param+0x75/0x75
    > > > [    5.502720]  kernel_init_freeable+0x170/0x1f3
    > > > [    5.502720]  ? rest_init+0xcd/0xcd
    > > > [    5.502720]  kernel_init+0x8/0xdb
    > > > [    5.502720]  ret_from_fork+0x2e/0x38
    > > > [    5.502720] Modules linked in:
    > > > [    5.567678] _warn_unseeded_randomness: 1 callbacks suppressed
    > > > [    5.567682] random: get_random_bytes called from
    > > > init_oops_id+0x3a/0x40 with crng_init=0
    > > > [    5.572237] ---[ end trace 1b6e88c03e412db2 ]---
    > > > [    5.574099] EIP: kfree+0x117/0x150
    > > > [    5.575673] Code: 74 21 8b 06 31 d2 f6 c4 80 74 04 0f b6 56 31
    > > > 89 f0 e8 7d e0 fa ff e9 7b ff ff ff 8d b4 26 00 00 00 00 90 8b 46
    > > > 04 a8 01 75 d8 <0f> 0b 8d b4 26 00 00 00 00 8b 75 f0 ff 75 ec 89
    > > > d9 89 f8 6a 01 53
    > > > [    5.581124] EAX: 00000100 EBX: 6b6b6b6b ECX: 00140011 EDX:
    > > > 00000000
    > > > [    5.583243] ESI: f67dac70 EDI: ccc4aca0 EBP: f4083e28 ESP:
    > > > cce983dc
    > > > [    5.585347] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
    > > > EFLAGS: 00210246
    > > > [    5.587600] CR0: 80050033 CR2: ffd14000 CR3: 0ce94000 CR4:
    > > > 000406d0
    > > > [    5.589747] Kernel panic - not syncing: Fatal exception
    > > > [    5.590740] Kernel Offset: 0xb200000 from 0xc1000000
    > > > (relocation range: 0xc0000000-0xf77fdfff)
    > > > [    5.590740] ---[ end Kernel panic - not syncing: Fatal
    > > > exception ]---
    > > >
    > > >
    > > >
    > > >
    > > This admittedly is a long shot, but does the appended patch help?
    > Thanks for the patch, but:
    > Nope, same crash.
    >

    thanks for the report, please confirm if the following patch fixes the
    problem or not
    https://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux.git/commit
    /?h=next&id=3c587768271e9c20276522025729e4ebca51583b

    thanks,
    rui



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