Hi,
Am 06.04.20 um 04:04 schrieb kernel test robot:
> FYI, we noticed the following commit (built with gcc-7):
>
> commit: aad378845d9334d223d0d56db8332ce071d90202 ("[PATCH 9/9] staging: bcm2835-camera: reduce indentation in ctrl_set_image_effect")
> url: https://github.com/0day-ci/linux/commits/Stefan-Wahren/staging-bcm2835-camera-Clean-up-driver/20200329-225704
>
>
> in testcase: boot
>
> on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 8G
>
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>
>
> +--------------------------------------------------------------------------------------+------------+------------+
> | | 301f97157d | aad378845d |
> +--------------------------------------------------------------------------------------+------------+------------+
> | boot_successes | 8 | 0 |
> | boot_failures | 9 | 16 |
> | WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_fwd_prog | 4 | 3 |
> | EIP:rcu_torture_fwd_prog | 4 | 3 |
> | Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 6 | |
> | Assertion_failed | 2 | |
> | WARNING:held_lock_freed | 0 | 15 |
> | is_freeing_memory#-#,with_a_lock_still_held_there | 0 | 15 |
> | WARNING:at_drivers/base/devres.c:#devres_release_all | 0 | 15 |
> | EIP:devres_release_all | 0 | 15 |
> | BUG:kernel_NULL_pointer_dereference,address | 0 | 15 |
> | Oops:#[##] | 0 | 15 |
> | EIP:add_dr | 0 | 15 |
> | Kernel_panic-not_syncing:Fatal_exception | 0 | 15 |
> | BUG:kernel_hang_in_early-boot_stage,last_printk:Probing_EDD(edd=off_to_disable)...ok | 0 | 1 |
> +--------------------------------------------------------------------------------------+------------+------------+
>
>
> If you fix the issue, kindly add following tag
> Reported-by: kernel test robot <rong.a.chen@xxxxxxxxx>
>
>
> [ 296.433348] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status
> [ 296.434682] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status
> [ 296.438645] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest0/status
> [ 296.438647] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status
> [ 296.439964] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status
> [ 296.442125] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest1/status
> [ 296.442125] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status
> [ 296.443264] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status
> [ 296.464571] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest2/status
> [ 296.464572] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status
> [ 296.466503] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status
> [ 296.469963] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest3/status
> [ 296.470955] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status
> [ 296.472792] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status
> [ 296.478533] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest5/status
> [ 296.478562] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status
> [ 296.480358] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status
> [ 296.484480] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest6/status
> [ 296.484482] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status
> [ 296.487813] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status
> [ 296.491912] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest7/status
> [ 296.492304] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status
> [ 296.494318] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status
> [ 296.498335] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/status
> [ 296.498337] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo
> [ 296.500123] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo
> [ 296.506899] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/test-unittest8/property-foo
> [ 296.506901] ### dt-test ### EXPECT \ : OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8
> [ 296.508845] ### dt-test ### EXPECT \ : OF: overlay: overlay #6 is not topmost
> [ 296.510454] OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8
> [ 296.512496] OF: overlay: overlay #6 is not topmost
> [ 296.513055] ### dt-test ### EXPECT / : OF: overlay: overlay #6 is not topmost
> [ 296.513056] ### dt-test ### EXPECT / : OF: overlay: node_overlaps_later_cs: #6 overlaps with #7 @/testcase-data/overlay-node/test-bus/test-unittest8
> [ 296.536328] ### dt-test ### EXPECT \ : i2c i2c-1: Added multiplexed i2c bus 2
> [ 296.538415] i2c i2c-0: Added multiplexed i2c bus 1
> [ 296.541270] i2c i2c-0: Added multiplexed i2c bus 1
> [ 296.541696] ### dt-test ### EXPECT / : i2c i2c-1: Added multiplexed i2c bus 2
> [ 296.541697] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status
> [ 296.542247] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status
> [ 296.559399] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest12/status
> [ 296.559402] ### dt-test ### EXPECT \ : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status
> [ 296.561292] OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status
> [ 296.565238] ### dt-test ### EXPECT / : OF: overlay: WARNING: memory leak will occur if overlay removed, property: /testcase-data/overlay-node/test-bus/i2c-test-bus/test-unittest13/status
> [ 296.565240] ### dt-test ### EXPECT \ : i2c i2c-1: Added multiplexed i2c bus 3
> [ 296.575450] i2c i2c-0: Added multiplexed i2c bus 2
> [ 296.578895] i2c i2c-0: Added multiplexed i2c bus 2
> [ 296.579549] ### dt-test ### EXPECT / : i2c i2c-1: Added multiplexed i2c bus 3
> [ 296.585532] ### dt-test ### EXPECT \ : GPIO line <<int>> (line-B-input) hogged as input
> [ 296.588809] ### dt-test ### EXPECT \ : GPIO line <<int>> (line-A-input) hogged as input
> [ 296.590068] GPIO line 509 (line-B-input) hogged as input
> [ 296.594977]
> [ 296.595173] =========================
> [ 296.595614] WARNING: held lock freed!
> [ 296.596036] 5.6.0-rc7-next-20200327-00009-gaad378845d933 #11 Not tainted
> [ 296.596808] -------------------------
> [ 296.597242] swapper/1 is freeing memory e77ea400-e77ea7ff, with a lock still held there!
> [ 296.598219] e77ea48c (&dev->mutex){....}-{3:3}, at: __device_driver_lock+0x27/0x30
> [ 296.599788] 1 lock held by swapper/1:
> [ 296.600200] #0: e77ea48c (&dev->mutex){....}-{3:3}, at: __device_driver_lock+0x27/0x30
> [ 296.601061]
> [ 296.601061] stack backtrace:
> [ 296.601578] CPU: 0 PID: 1 Comm: swapper Not tainted 5.6.0-rc7-next-20200327-00009-gaad378845d933 #11
> [ 296.602573] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
> [ 296.603472] Call Trace:
> [ 296.604146] dump_stack+0x16/0x26
> [ 296.605163] debug_check_no_locks_freed+0xde/0x110
> [ 296.606049] kfree+0x1e2/0x310
> [ 296.606444] unittest_gpio_remove+0x28/0x40
> [ 296.606928] platform_drv_remove+0x19/0x40
> [ 296.607382] really_probe+0x217/0x3a0
> [ 296.607787] driver_probe_device+0xe9/0x130
> [ 296.608568] ? mutex_lock_nested+0x15/0x20
> [ 296.609045] ? __device_driver_lock+0x27/0x30
> [ 296.609528] device_driver_attach+0x2f/0x60
> [ 296.609992] __driver_attach+0x99/0xa0
> [ 296.610418] ? device_driver_attach+0x60/0x60
> [ 296.610903] bus_for_each_dev+0x57/0x90
> [ 296.611330] driver_attach+0x14/0x20
> [ 296.611726] ? device_driver_attach+0x60/0x60
> [ 296.612230] bus_add_driver+0xc7/0x1c0
> [ 296.612657] driver_register+0x97/0xe0
> [ 296.613092] __platform_driver_register+0x2a/0x30
> [ 296.614274] of_unittest_overlay+0xcd8/0xffc
> [ 296.614774] of_unittest+0x1b48/0x2045
> [ 296.615208] ? of_unittest_dma_ranges_one+0x134/0x134
> [ 296.619132] do_one_initcall+0x9f/0x1f0
> [ 296.619646] ? parse_args+0x110/0x300
> [ 296.620107] ? kernel_init_freeable+0x11b/0x197
> [ 296.620621] kernel_init_freeable+0x133/0x197
> [ 296.621109] ? rest_init+0xf0/0xf0
> [ 296.621495] kernel_init+0x8/0x110
> [ 296.621883] ret_from_fork+0x2e/0x40
> [ 296.622626] ------------[ cut here ]------------
> [ 296.623194] WARNING: CPU: 0 PID: 1 at drivers/base/devres.c:526 devres_release_all+0xe/0x50
> [ 296.624300] Modules linked in:
> [ 296.624652] CPU: 0 PID: 1 Comm: swapper Not tainted 5.6.0-rc7-next-20200327-00009-gaad378845d933 #11
> [ 296.625711] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
> [ 296.626640] EIP: devres_release_all+0xe/0x50
> [ 296.627132] Code: c3 8d b4 26 00 00 00 00 8d 74 26 00 55 89 e5 5d c3 8d b4 26 00 00 00 00 8d 74 26 00 55 89 e5 53 8b 88 90 02 00 00 85 c9 75 12 <0f> 0b b8 ed ff ff ff eb 2b 8d b4 26 00 00 00 00 66 90 89 c3 8d 80
> [ 296.629196] EAX: e77ea40c EBX: e77ea40c ECX: 00000000 EDX: 00000001
> [ 296.629906] ESI: 00000000 EDI: c324e214 EBP: ed213db4 ESP: ed213db0
> [ 296.630608] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010246
> [ 296.631378] CR0: 80050033 CR2: 00043000 CR3: 033e4000 CR4: 000406f0
> [ 296.632078] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
> [ 296.632775] DR6: fffe0ff0 DR7: 00000400
> [ 296.633209] Call Trace:
> [ 296.633495] really_probe+0x21e/0x3a0
> [ 296.633909] driver_probe_device+0xe9/0x130
> [ 296.634380] ? mutex_lock_nested+0x15/0x20
> [ 296.634841] ? __device_driver_lock+0x27/0x30
> [ 296.635339] device_driver_attach+0x2f/0x60
> [ 296.635810] __driver_attach+0x99/0xa0
> [ 296.636232] ? device_driver_attach+0x60/0x60
> [ 296.636726] bus_for_each_dev+0x57/0x90
> [ 296.637157] driver_attach+0x14/0x20
> [ 296.637561] ? device_driver_attach+0x60/0x60
> [ 296.638047] bus_add_driver+0xc7/0x1c0
> [ 296.638468] driver_register+0x97/0xe0
> [ 296.638890] __platform_driver_register+0x2a/0x30
> [ 296.639432] of_unittest_overlay+0xcd8/0xffc
> [ 296.639909] of_unittest+0x1b48/0x2045
> [ 296.640332] ? of_unittest_dma_ranges_one+0x134/0x134
> [ 296.641008] do_one_initcall+0x9f/0x1f0
> [ 296.641440] ? parse_args+0x110/0x300
> [ 296.641853] ? kernel_init_freeable+0x11b/0x197
> [ 296.642358] kernel_init_freeable+0x133/0x197
> [ 296.642846] ? rest_init+0xf0/0xf0
> [ 296.643235] kernel_init+0x8/0x110
> [ 296.643756] ret_from_fork+0x2e/0x40
> [ 296.644162] ---[ end trace 616644d30a39399d ]---
>
sorry i didn't noticed this mail before. The mentioned commit and this
warning doesn't make sense to me.
> To reproduce:
>
> # build kernel
> cd linux
> cp config-5.6.0-rc7-next-20200327-00009-gaad378845d933 .config
> make HOSTCC=gcc-7 CC=gcc-7 ARCH=i386 olddefconfig prepare modules_prepare bzImage
>
> git clone https://github.com/intel/lkp-tests.git
> cd lkp-tests
> bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
>
>
>
> Thanks,
> Rong Chen
>
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