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igt@gem_mmap_offset@clear - dmesg-warn - WARNING: possible circular locking dependency detected, is trying to acquire lock at: acpi_device_wakeup_disable, but task is already holding lock:at: balance_pgdat

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  • Closed Issue created by Ravi V

    https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11876/re-dg2-11/igt@gem_mmap_offset@clear.html

    <4> [437.542163] 
    <4> [437.542172] ======================================================
    <4> [437.542174] WARNING: possible circular locking dependency detected
    <4> [437.542176] 5.19.0-rc6-CI_DRM_11876-g2305e0d00665+ #1 Tainted: G     U           
    <4> [437.542179] ------------------------------------------------------
    <4> [437.542181] kswapd0/93 is trying to acquire lock:
    <4> [437.542183] ffffffff827a7608 (acpi_wakeup_lock){+.+.}-{3:3}, at: acpi_device_wakeup_disable+0x12/0x50
    <4> [437.542191] 
    but task is already holding lock:
    <4> [437.542194] ffffffff8275d360 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x91/0x5c0
    <4> [437.542199] 
    which lock already depends on the new lock.
    <4> [437.542202] 
    the existing dependency chain (in reverse order) is:
    <4> [437.542204] 
    -> #2 (fs_reclaim){+.+.}-{0:0}:
    <4> [437.542207]        fs_reclaim_acquire+0x9d/0xd0
    <4> [437.542211]        kmem_cache_alloc_trace+0x2a/0x250
    <4> [437.542214]        __acpi_device_add+0x263/0x3a0
    <4> [437.542217]        acpi_add_single_object+0x3ea/0x710
    <4> [437.542220]        acpi_bus_check_add+0xf7/0x240
    <4> [437.542222]        acpi_bus_scan+0x34/0xf0
    <4> [437.542224]        acpi_scan_init+0xf5/0x241
    <4> [437.542228]        acpi_init+0x449/0x4aa
    <4> [437.542230]        do_one_initcall+0x53/0x2e0
    <4> [437.542233]        kernel_init_freeable+0x18f/0x1dd
    <4> [437.542236]        kernel_init+0x11/0x110
    <4> [437.542239]        ret_from_fork+0x1f/0x30
    <4> [437.542241] 
    -> #1 (acpi_device_lock){+.+.}-{3:3}:
    <4> [437.542245]        __mutex_lock+0x97/0xf20
    <4> [437.542246]        acpi_enable_wakeup_device_power+0x30/0xf0
    <4> [437.542249]        __acpi_device_wakeup_enable+0x31/0x110
    <4> [437.542252]        acpi_pm_set_device_wakeup+0x55/0x100
    <4> [437.542254]        __pci_enable_wake+0x5e/0xa0
    <4> [437.542257]        pci_finish_runtime_suspend+0x32/0x70
    <4> [437.542259]        pci_pm_runtime_suspend+0xa3/0x160
    <4> [437.542262]        __rpm_callback+0x3d/0x110
    <4> [437.542265]        rpm_callback+0x54/0x60
    <4> [437.542268]        rpm_suspend.part.10+0x105/0x5a0
    <4> [437.542270]        pm_runtime_work+0x7d/0x1e0
    <4> [437.542273]        process_one_work+0x272/0x5c0
    <4> [437.542276]        worker_thread+0x37/0x370
    <4> [437.542278]        kthread+0xed/0x120
    <4> [437.542280]        ret_from_fork+0x1f/0x30
    <4> [437.542282] 
    -> #0 (acpi_wakeup_lock){+.+.}-{3:3}:
    <4> [437.542285]        __lock_acquire+0x15ad/0x2940
    <4> [437.542288]        lock_acquire+0xd3/0x310
    <4> [437.542291]        __mutex_lock+0x97/0xf20
    <4> [437.542293]        acpi_device_wakeup_disable+0x12/0x50
    <4> [437.542295]        acpi_pm_set_device_wakeup+0x6e/0x100
    <4> [437.542297]        __pci_enable_wake+0x73/0xa0
    <4> [437.542300]        pci_pm_runtime_resume+0x45/0x90
    <4> [437.542302]        __rpm_callback+0x3d/0x110
    <4> [437.542304]        rpm_callback+0x54/0x60
    <4> [437.542307]        rpm_resume+0x54f/0x750
    <4> [437.542309]        __pm_runtime_resume+0x42/0x80
    <4> [437.542311]        __intel_runtime_pm_get+0x19/0x80 [i915]
    <4> [437.542386]        i915_gem_object_unbind+0x8f/0x3b0 [i915]
    <4> [437.542487]        i915_gem_shrink+0x634/0x850 [i915]
    <4> [437.542584]        i915_gem_shrinker_scan+0x3a/0xc0 [i915]
    <4> [437.542679]        shrink_slab.constprop.97+0x1a4/0x4f0
    <4> [437.542684]        shrink_node+0x21e/0x420
    <4> [437.542687]        balance_pgdat+0x241/0x5c0
    <4> [437.542690]        kswapd+0x229/0x4f0
    <4> [437.542694]        kthread+0xed/0x120
    <4> [437.542697]        ret_from_fork+0x1f/0x30
    <4> [437.542701] 
    other info that might help us debug this:
    <4> [437.542705] Chain exists of:
      acpi_wakeup_lock --> acpi_device_lock --> fs_reclaim
    <4> [437.542713]  Possible unsafe locking scenario:
    <4> [437.542716]        CPU0                    CPU1
    <4> [437.542719]        ----                    ----
    <4> [437.542721]   lock(fs_reclaim);
    <4> [437.542725]                                lock(acpi_device_lock);
    <4> [437.542728]                                lock(fs_reclaim);
    <4> [437.542732]   lock(acpi_wakeup_lock);
    <4> [437.542736] 
     *** DEADLOCK ***
    <4> [437.542739] 3 locks held by kswapd0/93:
    <4> [437.542742]  #0: ffffffff8275d360 (fs_reclaim){+.+.}-{0:0}, at: balance_pgdat+0x91/0x5c0
    <4> [437.542749]  #1: ffffffff8274e9d0 (shrinker_rwsem){++++}-{3:3}, at: shrink_slab.constprop.97+0x3c/0x4f0
    <4> [437.542757]  #2: ffff888134e745e8 (reservation_ww_class_mutex){+.+.}-{3:3}, at: i915_gem_shrink+0x61d/0x850 [i915]
    <4> [437.542857] 
    stack backtrace:

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