edac KASAN warning in experimental arm64 allmodconfig boot

From: John Garry
Date: Mon Oct 14 2019 - 11:19:01 EST

Hi guys,

I'm experimenting by trying to boot an allmodconfig arm64 kernel, as mentioned here:
https://lore.kernel.org/linux-arm-kernel/507325a3-030e-2843-0f46-7e18c60257de@xxxxxxxxxx/

One thing that I noticed - it's hard to miss actually - is the amount of complaining from KASAN about the EDAC/ghes code. Maybe this is something I should not care about/red herring, or maybe something genuine. Let me know what you think.

The kernel is v5.4-rc3, and I raised the EDAC mc debug level to get extra debug prints.

Log below, Thanks,
John

Log snippet (I cut off after the first KASAN warning):

[ 70.471011][ T1] random: get_random_u32 called from new_slab+0x360/0x698 with crng_init=0
[ 70.478671][ T1] [Firmware Bug]: APEI: Invalid bit width + offset in GAR [0x94110034/64/0/3/0]
[ 70.526585][ T1] EDAC DEBUG: edac_mc_alloc: allocating 3524 bytes for mci data (32 dimms, 32 csrows/channels)
[ 70.542013][ T1] EDAC DEBUG: ghes_edac_dmidecode: DIMM2: Registered-DDR4 size = 16384 MB(ECC)
[ 70.551044][ T1] EDAC DEBUG: ghes_edac_dmidecode: type 26, detail 0x2080, width 72(total 64)
[ 70.559986][ T1] EDAC DEBUG: edac_mc_add_mc_with_groups:
[ 70.567082][ T1] EDAC DEBUG: edac_create_sysfs_mci_device: device mc0 created
[ 70.575608][ T1] EDAC DEBUG: edac_create_dimm_object: device dimm2 created at location memory 2
[ 70.585818][ T1] EDAC DEBUG: edac_create_csrow_object: device csrow2 created
[ 70.594110][ T1] EDAC MC0: Giving out device to module ghes_edac.c controller ghes_edac: DEV ghes (INTERRUPT)
[ 70.605936][ T1] EDAC DEBUG: edac_mc_del_mc:
[ 70.611188][ T1] EDAC DEBUG: edac_remove_sysfs_mci_device:
[ 70.619443][ T1] random: get_random_u32 called from kobject_put+0x8c/0x190 with crng_init=0
[ 70.628163][ T1] kobject: 'csrow2' ((____ptrval____)): kobject_release, parent (____ptrval____) (delayed 750)
[ 70.638477][ T1] EDAC DEBUG: edac_remove_sysfs_mci_device: unregistering device dimm2
[ 70.647903][ T1] kobject: 'dimm2' ((____ptrval____)): kobject_release, parent (____ptrval____) (delayed 250)
[ 70.658105][ T1] EDAC MC: Removed device 0 for ghes_edac.c ghes_edac: DEV ghes
[ 70.665673][ T1] EDAC DEBUG: edac_mc_free:
[ 70.670211][ T1] EDAC DEBUG: edac_unregister_sysfs: unregistering device mc0
[ 70.679027][ T1] kobject: 'mc0' ((____ptrval____)): kobject_release, parent (____ptrval____) (delayed 500)
[ 70.690987][ T1] EDAC DEBUG: edac_mc_del_mc:
[ 70.695769][ T1] EDAC DEBUG: edac_mc_free:
[ 70.700412][ T1] ------------[ cut here ]------------
[ 70.705832][ T1] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x48
[ 70.716663][ T1] WARNING: CPU: 50 PID: 1 at lib/debugobjects.c:484 debug_print_object+0xec/0x130
[ 70.725721][ T1] Modules linked in:
[ 70.729491][ T1] CPU: 50 PID: 1 Comm: swapper/0 Not tainted 5.4.0-rc3+ #1146
[ 70.736811][ T1] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019
[ 70.746039][ T1] pstate: 80800009 (Nzcv daif -PAN +UAO)
[ 70.746056][ T1] pc : debug_print_object+0xec/0x130
[ 70.756681][ T1] lr : debug_print_object+0xec/0x130
[ 70.756691][ T1] sp : ffff0020bf2c7740
[ 70.756699][ T1] x29: ffff0020bf2c7740 x28: ffff0023242c5000
[ 70.756715][ T1] x27: ffff0023242c5090 x26: ffffa00017543de0
[ 70.756730][ T1] x25: ffffa000101cd558 x24: ffffa00012051fc0
[ 70.756750][ T1] x23: ffffa000150d2200 x22: ffffa000120523a0
[ 70.765894][ T1] x21: ffffa00012051640 x20: 0000000000000000
[ 70.765910][ T1] x19: ffffa00015019000 x18: 00000000000025a8
[ 70.765924][ T1] x17: 00000000000025a0 x16: 00000000000026b0
[ 70.765939][ T1] x15: 0000000000001470 x14: 64203a746e696820
[ 70.765954][ T1] x13: 7473696c5f72656d x12: 1fffe00417e58e5a
[ 70.777974][ T1] x11: ffff800417e58e5a x10: dfffa00000000000
[ 70.789995][ T1] x9 : ffff800417e58e5b x8 : 0000000000000001
[ 70.790011][ T1] x7 : ffff0020bf2c72d7 x6 : ffff800417e58e5b
[ 70.790026][ T1] x5 : 1fffe00417e57936 x4 : ffff0020bf2bc058
[ 70.790041][ T1] x3 : ffffa00010000000 x2 : ffff800417e58eb0
[ 70.790055][ T1] x1 : f8aafc30f531b000 x0 : 0000000000000000
[ 70.802080][ T1] Call trace:
[ 70.802093][ T1] debug_print_object+0xec/0x130
[ 70.802106][ T1] __debug_check_no_obj_freed+0x114/0x290
[ 70.802119][ T1] debug_check_no_obj_freed+0x18/0x28
[ 70.802130][ T1] slab_free_freelist_hook+0x18c/0x228
[ 70.802140][ T1] kfree+0x264/0x420
[ 70.802157][ T1] _edac_mc_free+0x6c/0x210
[ 70.814163][ T1] edac_mc_free+0x68/0x88
[ 70.814177][ T1] ghes_edac_unregister+0x44/0x70
[ 70.814193][ T1] ghes_remove+0x274/0x2a0
[ 70.814207][ T1] platform_drv_remove+0x44/0x78
[ 70.814217][ T1] really_probe+0x404/0x840
[ 70.814228][ T1] driver_probe_device+0x190/0x1f0
[ 70.814239][ T1] device_driver_attach+0x7c/0xb0
[ 70.814249][ T1] __driver_attach+0x1b8/0x1d0
[ 70.814261][ T1] bus_for_each_dev+0xf8/0x190
[ 70.814277][ T1] driver_attach+0x34/0x40
[ 70.826289][ T1] bus_add_driver+0x1d8/0x340
[ 70.826301][ T1] driver_register+0x168/0x1e8
[ 70.826312][ T1] __platform_driver_register+0x80/0x90
[ 70.826326][ T1] ghes_init+0xc4/0x174
[ 70.826338][ T1] do_one_initcall+0x328/0x788
[ 70.826356][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 70.838361][ T1] kernel_init+0x18/0x178
[ 70.838373][ T1] ret_from_fork+0x10/0x18
[ 70.838381][ T1] irq event stamp: 4398006
[ 70.838394][ T1] hardirqs last enabled at (4398005): [<ffffa000100c0e78>] el1_irq+0x138/0x200
[ 70.838409][ T1] hardirqs last disabled at (4398006): [<ffffa000100fd884>] debug_exception_enter+0x8c/0x190
[ 70.838422][ T1] softirqs last enabled at (4398004): [<ffffa000100bf4a4>] __do_softirq+0x894/0x920
[ 70.838439][ T1] softirqs last disabled at (4397997): [<ffffa000101965e4>] irq_exit+0x114/0x1a0
[ 70.875171][ T1] ---[ end trace a9b7b2cbbb0f7263 ]---
[ 70.885805][ T1] ------------[ cut here ]------------
[ 70.892929][ T1] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x48
[ 70.907197][ T1] WARNING: CPU: 50 PID: 1 at lib/debugobjects.c:484 debug_print_object+0xec/0x130
[ 70.916349][ T1] Modules linked in:
[ 70.916368][ T1] CPU: 50 PID: 1 Comm: swapper/0 Tainted: G W 5.4.0-rc3+ #1146
[ 70.916378][ T1] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019
[ 70.916388][ T1] pstate: 80800009 (Nzcv daif -PAN +UAO)
[ 70.916400][ T1] pc : debug_print_object+0xec/0x130
[ 70.916412][ T1] lr : debug_print_object+0xec/0x130
[ 70.916424][ T1] sp : ffff0020bf2c7740
[ 70.925916][ T1] x29: ffff0020bf2c7740 x28: ffff00232427a000
[ 70.925933][ T1] x27: ffff00232427a090 x26: ffffa00017543de0
[ 70.925948][ T1] x25: ffffa000101cd558 x24: ffffa00012051fc0
[ 70.925963][ T1] x23: ffffa000150d2200 x22: ffffa000120523a0
[ 70.971505][ T1] x21: ffffa00012051640 x20: 0000000000000000
[ 70.984654][ T1] x19: ffffa00015019000 x18: 00000000000025a8
[ 70.984671][ T1] x17: 00000000000025a0 x16: 00000000000026b0
[ 70.984685][ T1] x15: 0000000000001470 x14: 726f775f64657961
[ 70.984701][ T1] x13: 6c6564203a746e69 x12: 1fffe00417e58e5a
[ 71.004012][ T1] x11: ffff800417e58e5a x10: dfffa00000000000
[ 71.004028][ T1] x9 : ffff800417e58e5b x8 : 0000000000000001
[ 71.004043][ T1] x7 : ffff0020bf2c72d7 x6 : ffff800417e58e5b
[ 71.004058][ T1] x5 : 1fffe00417e57936 x4 : ffff0020bf2bc058
[ 71.034246][ T1] x3 : ffffa00010000000 x2 : ffff800417e58eb0
[ 71.047049][ T1] x1 : f8aafc30f531b000 x0 : 0000000000000000
[ 71.047065][ T1] Call trace:
[ 71.047078][ T1] debug_print_object+0xec/0x130
[ 71.047090][ T1] __debug_check_no_obj_freed+0x114/0x290
[ 71.047103][ T1] debug_check_no_obj_freed+0x18/0x28
[ 71.047114][ T1] slab_free_freelist_h T1] edac_mc_free+0x68/0x88
[ 71.065065][ T1] ghes_edac_unregister+0x44/0x70
[ 71.065077][ T1] ghes_remove+0x274/0x2a0
[ 71.065088][ T1] platform_drv_remove+0x44/0x78
[ 71.065099][ T1] really_probe+0x404/0x840
[ 71.065112][ T1] driver_probe_device+0x190/0x1f0
[ 71.132887][ T1] device_driver_attach+0x7c/0xb0
[ 71.132898][ T1] __driver_attach+0x1b8/0x1d0
[ 71.132911][ T1] bus_for_each_dev+0xf8/0x190
[ 71.132921][ T1] driver_attach+0x34/0x40
[ 71.132931][ T1] bus_add_driver+0x1d8/0x340
[ 71.132942][ T1] driver_register+0x168/0x1e8
[ 71.132953][ T1] __platform_driver_register+0x80/0x90
[ 71.132964][ T1] ghes_init+0xc4/0x174
[ 71.132975][ T1] do_one_initcall+0x328/0x788
[ 71.132989][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.144995][ T1] kernel_init+0x18/0x178
[ 71.145006][ T1] ret_from_fork+0x10/0x18
[ 71.145015][ T1] irq event stamp: 4398362
[ 71.145027][ T1] hardirqs last enabled at (4398361): [<ffffa000100c0e78>] el1_irq+0x138/0x200
[ 71.145042][ T1] hardirqs last disabled at (4398362): [<ffffa000100fd884>] debug_exception_enter+0x8c/0x190
[ 71.145056][ T1] softirqs last enabled at (4398360): [<irq_exit+0x114/0x1a0
[ 71.157069][ T1] ---[ end trace a9b7b2cbbb0f7264 ]---
[ 71.158439][ T1] ------------[ cut here ]------------
[ 71.194319][ T1] ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x48
[ 71.203588][ T1] WARNING: CPU: 50 PID: 1 at lib/debugobjects.c:484 debug_print_object+0xec/0x130
[ 71.212094][ T1] Modules linked in:
[ 71.212112][ T1] CPU: 50 PID: 1 Comm: swapper/0 Tainted: G W 5.4.0-rc3+ #1146
[ 71.212121][ T1] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019
[ 71.212131][ T1] pstate: 80800009 (Nzcv daif -PAN +UAO)
[ 71.212144][ T1] pc : debug_print_object+0xec/0x130
[ 71.212158][ T1] lr : debug_print_object+0xec/0x130
[ 71.224447][ T830] kobject: 'brcm-gisb-arb' ((____ptrval____)): kobject_cleanup, parent (____ptrval____)
[ 71.226086][ T1] sp : ffff0020bf2c7740
[ 71.226099][ T1] x29: ffff0020bf2c7740 x28: ffff002324274000
[ 71.230557][ T830] kobject: 'brcm-gisb-arb' ((____ptrval____)): auto cleanup 'remove' event
[ 71.235419][ T1] x27: ffff002324274090 x26: ffffa00017543de0
[ 71.235435][ T1] x25: ffffa000101cd558 x24: ffffa00012051fc0
[ 71.235450][ T1] x23: ffffa000150d2200 x22: ffffa000120523a0
[ 71.235465][ T1] x21: ffffa00012051640 x20: 0000000000000000
[ 71.240402][ T830] kobject: 'brcm-gisb-arb' ((____ptrval____)): kobject_uevent_env
[ 71.244968][ T1] x19: ffffa00015019000 x18: 00000000000025a8
[ 71.244984][ T1] x17: 00000000000025a0 x16: 00000000000026b0
[ 71.244999][ T1] x15: 0000000000001470 x14: 726f775f64657961
[ 71.245014][ T1] x13: 6c6564203a746e69 x12: 1fffe00417e58e5a
[ 71.249837][ T830] kobject: 'brcm-gisb-arb' ((____ptrval____)): fill_kobj_path: path = '/bus/platform/drivers/brcm-gisb-arb'
[ 71.253908][ T1] x11: ffff800417e58e5a x10: dfffa00000000000
[ 71.253925][ T1] x9 : ffff800417e58e5b x8 : 0000000000000001
[ 71.253939][ T1] x7 : ffff0020bf2c72d7 x6 : ffff800417e58e5b
[ 71.253954][ T1] x5 : 1fffe00417e57936 x4 : ffff0020bf2bc058
[ 71.256447][ T832] kobject: 'wakeup40' ((____ptrval____)): kobject_cleanup, parent (____ptrval____)
[ 71.256466][ T832] kobject: 'wakeup40' ((____ptrval____)): calling ktype release
[ 71.256516][ T832] kobject: 'wakeup40': free name
[ 71.258600][ T830] kobject: 'brcm-gisb-arb' ((____ptrval____)): auto cleanup kobject_del
[ 71.263109][ T1] x3 : ffffa00010000000 x2 : ffff800417e58eb0
[ 71.263125][ T1] x1 : f8aafc30f531b000 x0 : 0000000000000000
[ 71.263139][ T1] Call trace:
[ 71.263152][ T1] debug_print_object+0xec/0x130
[ 71.263169][ T1] __debug_check_no_obj_freed+0x114/0x290
[ 71.268667][ T830] kobject: 'brcm-gisb-arb' ((____ptrval____)): calling ktype release
[ 71.272574][ T1] debug_check_no_obj_freed+0x18/0x28
[ 71.272586][ T1] slab_free_freelist_hook+0x18c/0x228
[ 71.272596][ T1] kfree+0x264/0x420
[ 71.272608][ T1] _edac_mc_free+0x1f8/0x210
[ 71.272619][ T1] edac_mc_free+0x68/0x88
[ 71.272632][ T1] ghes_edac_unregister+0x44/0x70
[ 71.277292][ T830] driver: 'brcm-gisb-arb': driver_release
[ 71.282298][ T1] ghes_remove+0x274/0x2a0
[ 71.282310][ T1] platform_drv_remove+0x44/0x78
[ 71.282321][ T1] really_probe+0x404/0x840
[ 71.282331][ T1] driver_probe_device+0x190/0x1f0
[ 71.282342][ T1] device_driver_attach+0x7c/0xb0
[ 71.282352][ T1] __driver_attach+0x1b8/0x1d0
[ 71.282368][ T1] bus_for_each_dev+0xf8/0x190
[ 71.286608][ T830] kobject: 'brcm-gisb-arb': free name
[ 71.290816][ T1] driver_attach+0x34/0x40
[ 71.290826][ T1] bus_add_driver+0x1d8/0x340
[ 71.290838][ T1] driver_register+0x168/0x1e8
[ 71.290849][ T1] __platform_driver_register+0x80/0x90
[ 71.290859][ T1] ghes_init+0xc4/0x174
[ 71.290872][ T1] do_one_initcall+0x328/0x788
[ 71.320457][ T833] kobject: 'wakeup' ((____ptrval____)): kobject_cleanup, parent (____ptrval____)
[ 71.323307][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.323324][ T1] kernel_init+0x18/0x178
[ 71.332431][ T833] kobject: 'wakeup' ((____ptrval____)): calling ktype release
[ 71.337592][ T1] ret_from_fork+0x10/0x18
[ 71.337601][ T1] irq event stamp: 4399038
[ 71.337613][ T1] hardirqs last enabled at (4399037): [<ffffa000100c0e78>] el1_irq+0x138/0x200
[ 71.337627][ T1] hardirqs last disabled at (4399038): [<ffffa000100fd884>] debug_exception_enter+0x8c/0x190
[ 71.337640][ T1] softirqs last enabled at (4399036): [<ffffa000100bf4a4>] __do_softirq+0x894/0x920
[ 71.337655][ T1] softirqs last disabled at (4399029): [<ffffa000101965e4>] irq_exit+0x114/0x1a0
[ 71.343025][ T833] kobject: 'wakeup': free name
[ 71.352445][ T834] kobject: 'stmpe-pwm' ((____ptrval____)): kobject_cleanup, parent (____ptrval____)
[ 71.352463][ T834] kobject: 'stmpe-pwm' ((____ptrval____)): auto cleanup 'remove' event
[ 71.352481][ T834] kobject: 'stmpe-pwm' ((____ptrval____)): kobject_uevent_env
[ 71.352587][ T834] kobject: 'stmpe-pwm' ((____ptrval____)): fill_kobj_path: path = '/bus/platform/drivers/stmpe-pwm'
[ 71.352645][ T834] kobject: 'stmpe-pwm' ((____ptrval____)): auto cleanup kobject_del
[ 71.352713][ T834] kobject: 'stmpe-pwm' ((____ptrval____)): calling ktype release
[ 71.352730][ T834] driver: 'stmpe-pwm': driver_release
[ 71.352763][ T834] kobject: 'stmpe-pwm': free name
[ 71.353566][ T1] ---[ end trace a9b7b2cbbb0f7265 ]---
[ 71.353899][ T1] GHES GHES.1: no default pinctrl state
[ 71.384529][ T851] kobject: 'wakeup15' ((____ptrval____)): kobject_cleanup, parent (____ptrval____)
[ 71.384654][ T848] kobject: 'wakeup' ((____ptrval____)): kobject_cleanup, parent (____ptrval____)
[ 71.386131][ T1] driver: 'GHES': driver_bound: bound to device 'GHES.1'
[ 71.386163][ T1] kobject: 'GHES.1' ((____ptrval____)): kobject_uevent_env
[ 71.386272][ T1] kobject: 'GHES.1' ((____ptrval____)): fill_kobj_path: path = '/devices/platform/GHES.1'
[ 71.386334][ T1] bus: 'platform': really_probe: bound device GHES.1 to driver GHES
[ 71.386378][ T1] bus: 'platform': driver_probe_device: matched device GHES.2 with driver GHES
[ 71.386410][ T1] bus: 'platform': really_probe: probing driver GHES with device GHES.2
[ 71.386512][ T1] GHES GHES.2: no default pinctrl state
[ 71.390169][ T851] kobject: 'wakeup15' ((____ptrval____)): calling ktype release
[ 71.395406][ T848] kobject: 'wakeup' ((____ptrval____)): calling ktype release
[ 71.395681][ T1] ==================================================================
[ 71.395716][ T1] BUG: KASAN: use-after-free in ghes_edac_unregister+0x28/0x70
[ 71.395728][ T1] Read of size 8 at addr ffff002324274bdc by task swapper/0/1
[ 71.395735][ T1]
[ 71.395749][ T1] CPU: 48 PID: 1 Comm: swapper/0 Tainted: G W 5.4.0-rc3+ #1146
[ 71.395759][ T1] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019
[ 71.395768][ T1] Call trace:
[ 71.395780][ T1] dump_backtrace+0x0/0x298
[ 71.395790][ T1] show_stack+0x20/0x30
[ 71.395802][ T1] dump_stack+0x190/0x21c
[ 71.395815][ T1] print_address_description.isra.6+0x80/0x3d0
[ 71.395827][ T1] __kasan_report+0x174/0x23c
[ 71.395838][ T1] kasan_report+0xc/0x18
[ 71.395849][ T1] __asan_load8+0xa4/0xb0
[ 71.395861][ T1] ghes_edac_unregister+0x28/0x70
[ 71.395873][ T1] ghes_remove+0x274/0x2a0
[ 71.395884][ T1] platform_drv_remove+0x44/0x78
[ 71.395895][ T1] really_probe+0x404/0x840
[ 71.395905][ T1] driver_probe_device+0x190/0x1f0
[ 71.395916][ T1] device_driver_attach+0x7c/0xb0
[ 71.395927][ T1] __driver_attach+0x1b8/0x1d0
[ 71.395939][ T1] bus_for_each_dev+0xf8/0x190
[ 71.395949][ T1] driver_attach+0x34/0x40
[ 71.395960][ T1] bus_add_driver+0x1d8/0x340
[ 71.395970][ T1] driver_register+0x168/0x1e8
[ 71.395982][ T1] __platform_driver_register+0x80/0x90
[ 71.395993][ T1] ghes_init+0xc4/0x174
[ 71.396004][ T1] do_one_initcall+0x328/0x788
[ 71.396017][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.396028][ T1] kernel_init+0x18/0x178
[ 71.396039][ T1] ret_from_fork+0x10/0x18
[ 71.396047][ T1]
[ 71.396056][ T1] Allocated by task 1:
[ 71.396068][ T1] save_stack+0x28/0xb0
[ 71.396080][ T1] __kasan_kmalloc.isra.9+0xa0/0xc8
[ 71.396091][ T1] kasan_kmalloc+0xc/0x18
[ 71.396102][ T1] __kmalloc+0x2d0/0x338
[ 71.396114][ T1] edac_mc_alloc+0xaa8/0xb18
[ 71.396125][ T1] ghes_edac_register+0x164/0x398
[ 71.396137][ T1] ghes_probe+0x648/0x6d8
[ 71.396148][ T1] platform_drv_probe+0x8c/0x110
[ 71.396159][ T1] really_probe+0x32c/0x840
[ 71.396170][ T1] driver_probe_device+0x190/0x1f0
[ 71.396181][ T1] device_driver_attach+0x7c/0xb0
[ 71.396192][ T1] __driver_attach+0x1b8/0x1d0
[ 71.396203][ T1] bus_for_each_dev+0xf8/0x190
[ 71.396214][ T1] driver_attach+0x34/0x40
[ 71.396224][ T1] bus_add_driver+0x1d8/0x340
[ 71.396235][ T1] driver_register+0x168/0x1e8
[ 71.396247][ T1] __platform_driver_register+0x80/0x90
[ 71.396257][ T1] ghes_init+0xc4/0x174
[ 71.396268][ T1] do_one_initcall+0x328/0x788
[ 71.396281][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.396292][ T1] kernel_init+0x18/0x178
[ 71.396303][ T1] ret_from_fork+0x10/0x18
[ 71.396310][ T1]
[ 71.396318][ T1] Freed by task 1:
[ 71.396330][ T1] save_stack+0x28/0xb0
[ 71.396341][ T1] __kasan_slab_free+0x140/0x170
[ 71.396353][ T1] kasan_slab_free+0x10/0x18
[ 71.396364][ T1] slab_free_freelist_hook+0x19c/0x228
[ 71.396375][ T1] kfree+0x264/0x420
[ 71.396386][ T1] _edac_mc_free+0x1f8/0x210
[ 71.396398][ T1] edac_mc_free+0x68/0x88
[ 71.396409][ T1] ghes_edac_unregister+0x44/0x70
[ 71.396420][ T1] ghes_remove+0x274/0x2a0
[ 71.396432][ T1] platform_drv_remove+0x44/0x78
[ 71.396442][ T1] really_probe+0x404/0x840
[ 71.396453][ T1] driver_probe_device+0x190/0x1f0
[ 71.396464][ T1] device_driver_attach+0x7c/0xb0
[ 71.396475][ T1] __driver_attach+0x1b8/0x1d0
[ 71.396487][ T1] bus_for_each_dev+0xf8/0x190
[ 71.396497][ T1] driver_attach+0x34/0x40
[ 71.396508][ T1] bus_add_driver+0x1d8/0x340
[ 71.396519][ T1] driver_register+0x168/0x1e8
[ 71.396530][ T1] __platform_driver_register+0x80/0x90
[ 71.396541][ T1] ghes_init+0xc4/0x174
[ 71.396552][ T1] do_one_initcall+0x328/0x788
[ 71.396564][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.396575][ T1] kernel_init+0x18/0x178
[ 71.396586][ T1] ret_from_fork+0x10/0x18
[ 71.396593][ T1]
[ 71.396604][ T1] The buggy address belongs to the object at ffff002324274000
[ 71.396604][ T1] which belongs to the cache kmalloc-4k of size 4096
[ 71.396615][ T1] The buggy address is located 3036 bytes inside of
[ 71.396615][ T1] 4096-byte region [ffff002324274000, ffff002324275000)
[ 71.396624][ T1] The buggy address belongs to the page:
[ 71.396637][ T1] page:fffffe008c709c00 refcount:1 mapcount:0 mapping:ffff0020bfc16980 index:0x0 compound_mapcount: 0
[ 71.396655][ T1] flags: 0x1ffff00000010200(slab|head)
[ 71.396671][ T1] raw: 1ffff00000010200 fffffe008c709a08 fffffe008c70c408 ffff0020bfc16980
[ 71.396685][ T1] raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
[ 71.396693][ T1] page dumped because: kasan: bad access detected
[ 71.396701][ T1]
[ 71.396709][ T1] Memory state around the buggy address:
[ 71.396721][ T1] ffff002324274a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 71.396732][ T1] ffff002324274b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 71.396743][ T1] >ffff002324274b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 71.396751][ T1] ^
[ 71.396762][ T1] ffff002324274c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 71.396773][ T1] ffff002324274c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 71.396781][ T1] ==================================================================
[ 71.396789][ T1] Disabling lock debugging due to kernel taint
[ 71.396834][ T1] EDAC DEBUG: edac_mc_del_mc:
[ 71.396846][ T1] EDAC DEBUG: edac_mc_free:
[ 71.396866][ T1] ==================================================================
[ 71.396874][ T1] BUG: KASAN: double-free or invalid-free in kfree+0x264/0x420
[ 71.396877][ T1]
[ 71.396886][ T1] CPU: 48 PID: 1 Comm: swapper/0 Tainted: G B W 5.4.0-rc3+ #1146
[ 71.396891][ T1] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019
[ 71.396895][ T1] Call trace:
[ 71.396902][ T1] dump_backtrace+0x0/0x298
[ 71.396909][ T1] show_stack+0x20/0x30
[ 71.396915][ T1] dump_stack+0x190/0x21c
[ 71.396923][ T1] print_address_description.isra.6+0x80/0x3d0
[ 71.396931][ T1] kasan_report_invalid_free+0x78/0xa0
[ 71.396939][ T1] __kasan_slab_free+0xbc/0x170
[ 71.396946][ T1] kasan_slab_free+0x10/0x18
[ 71.396953][ T1] slab_free_freelist_hook+0x19c/0x228
[ 71.396959][ T1] kfree+0x264/0x420
[ 71.396967][ T1] _edac_mc_free+0x6c/0x210
[ 71.396974][ T1] edac_mc_free+0x68/0x88
[ 71.396981][ T1] ghes_edac_unregister+0x44/0x70
[ 71.396989][ T1] ghes_remove+0x274/0x2a0
[ 71.396996][ T1] platform_drv_remove+0x44/0x78
[ 71.397002][ T1] really_probe+0x404/0x840
[ 71.397009][ T1] driver_probe_device+0x190/0x1f0
[ 71.397016][ T1] device_driver_attach+0x7c/0xb0
[ 71.397022][ T1] __driver_attach+0x1b8/0x1d0
[ 71.397030][ T1] bus_for_each_dev+0xf8/0x190
[ 71.397037][ T1] driver_attach+0x34/0x40
[ 71.397043][ T1] bus_add_driver+0x1d8/0x340
[ 71.397049][ T1] driver_register+0x168/0x1e8
[ 71.397057][ T1] __platform_driver_register+0x80/0x90
[ 71.397063][ T1] ghes_init+0xc4/0x174
[ 71.397070][ T1] do_one_initcall+0x328/0x788
[ 71.397078][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.397085][ T1] kernel_init+0x18/0x178
[ 71.397092][ T1] ret_from_fork+0x10/0x18
[ 71.397096][ T1]
[ 71.397100][ T1] Allocated by task 1:
[ 71.397108][ T1] save_stack+0x28/0xb0
[ 71.397116][ T1] __kasan_kmalloc.isra.9+0xa0/0xc8
[ 71.397123][ T1] kasan_kmalloc+0xc/0x18
[ 71.397130][ T1] kmem_cache_alloc_trace+0x2a0/0x2e8
[ 71.397138][ T1] edac_mc_alloc+0x5d4/0xb18
[ 71.397145][ T1] ghes_edac_register+0x164/0x398
[ 71.397152][ T1] ghes_probe+0x648/0x6d8
[ 71.397160][ T1] platform_drv_probe+0x8c/0x110
[ 71.397166][ T1] really_probe+0x32c/0x840
[ 71.397173][ T1] driver_probe_device+0x190/0x1f0
[ 71.397180][ T1] device_driver_attach+0x7c/0xb0
[ 71.397186][ T1] __driver_attach+0x1b8/0x1d0
[ 71.397194][ T1] bus_for_each_dev+0xf8/0x190
[ 71.397201][ T1] driver_attach+0x34/0x40
[ 71.397207][ T1] bus_add_driver+0x1d8/0x340
[ 71.397213][ T1] driver_register+0x168/0x1e8
[ 71.397221][ T1] __platform_driver_register+0x80/0x90
[ 71.397227][ T1] ghes_init+0xc4/0x174
[ 71.397235][ T1] do_one_initcall+0x328/0x788
[ 71.397243][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.397250][ T1] kernel_init+0x18/0x178
[ 71.397257][ T1] ret_from_fork+0x10/0x18
[ 71.397260][ T1]
[ 71.397264][ T1] Freed by task 1:
[ 71.397272][ T1] save_stack+0x28/0xb0
[ 71.397279][ T1] __kasan_slab_free+0x140/0x170
[ 71.397286][ T1] kasan_slab_free+0x10/0x18
[ 71.397294][ T1] slab_free_freelist_hook+0x19c/0x228
[ 71.397300][ T1] kfree+0x264/0x420
[ 71.397307][ T1] _edac_mc_free+0x15c/0x210
[ 71.397315][ T1] edac_mc_free+0x68/0x88
[ 71.397322][ T1] ghes_edac_unregister+0x44/0x70
[ 71.397329][ T1] ghes_remove+0x274/0x2a0
[ 71.397337][ T1] platform_drv_remove+0x44/0x78
[ 71.397343][ T1] really_probe+0x404/0x840
[ 71.397350][ T1] driver_probe_device+0x190/0x1f0
[ 71.397357][ T1] device_driver_attach+0x7c/0xb0
[ 71.397363][ T1] __driver_attach+0x1b8/0x1d0
[ 71.397371][ T1] bus_for_each_dev+0xf8/0x190
[ 71.397377][ T1] driver_attach+0x34/0x40
[ 71.397384][ T1] bus_add_driver+0x1d8/0x340
[ 71.397391][ T1] driver_register+0x168/0x1e8
[ 71.397398][ T1] __platform_driver_register+0x80/0x90
[ 71.397404][ T1] ghes_init+0xc4/0x174
[ 71.397411][ T1] do_one_initcall+0x328/0x788
[ 71.397419][ T1] kernel_init_freeable+0x2fc/0x3d4
[ 71.397427][ T1] kernel_init+0x18/0x178
[ 71.397433][ T1] ret_from_fork+0x10/0x18
[ 71.397437][ T1]
[ 71.397443][ T1] The buggy address belongs to the object at ffff0023245a9200
[ 71.397443][ T1] which belongs to the cache kmalloc-128 of size 128
[ 71.397451][ T1] The buggy address is located 0 bytes inside of
[ 71.397451][ T1] 128-byte region [ffff0023245a9200, ffff0023245a9280)
[ 71.397455][ T1] The buggy address belongs to the page:
[ 71.397462][ T1] page:fffffe008c716a00 refcount:1 mapcount:0 mapping:ffff0020bfc10580 index:0xffff0023245ada80 compound_mapcount: 0
[ 71.397471][ T1] flags: 0x1ffff00000010200(slab|head)
[ 71.397482][ T1] raw: 1ffff00000010200 fffffe008c716808 fffffe008c70a008 ffff0020bfc10580
[ 71.397492][ T1] raw: ffff0023245ada80 0000000000330016 00000001ffffffff 0000000000000000
[ 71.397496][ T1] page dumped because: kasan: bad access detected
[ 71.397499][ T1]
[ 71.397503][ T1] Memory state around the buggy address:
[ 71.397510][ T1] ffff0023245a9100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 71.397517][ T1] ffff0023245a9180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 71.397523][ T1] >ffff0023245a9200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 71.397527][ T1] ^
[ 71.397534][ T1] ffff0023245a9280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 71.397541][ T1] ffff0023245a9300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 71.397545][ T1] ==================================================================