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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][DRMTIP] igt@gem_userptr_blits@map-fixed-invalidate-(overlap-)busy(-gup) - incomplete - WARNING: possible circular locking dependency detected"
href="https://bugs.freedesktop.org/show_bug.cgi?id=109386">109386</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[CI][DRMTIP] igt@gem_userptr_blits@map-fixed-invalidate-(overlap-)busy(-gup) - incomplete - WARNING: possible circular locking dependency detected
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>martin.peres@free.fr
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_196/fi-ivb-3770/igt@gem_userptr_blits@map-fixed-invalidate-busy.html">https://intel-gfx-ci.01.org/tree/drm-tip/drmtip_196/fi-ivb-3770/igt@gem_userptr_blits@map-fixed-invalidate-busy.html</a>
<6> [123.903334] Console: switching to colour dummy device 80x25
<6> [123.903381] [IGT] gem_userptr_blits: executing
<6> [123.958532] [IGT] gem_userptr_blits: starting subtest
map-fixed-invalidate-busy
<6> [124.287429] userptr_mn_invalidate_range_start+0x0/0x270 [i915] callback
failed with -4 in blockable context.
<4> [124.287710]
<4> [124.287713] ======================================================
<4> [124.287715] WARNING: possible circular locking dependency detected
<4> [124.287718] 5.0.0-rc2-g19fd97ec0d64-drmtip_196+ #1 Tainted: G U
<4> [124.287721] ------------------------------------------------------
<4> [124.287723] gem_userptr_bli/2289 is trying to acquire lock:
<4> [124.287726] 000000001e4606f1 (fs_reclaim){+.+.}, at:
fs_reclaim_acquire.part.25+0x0/0x30
<4> [124.287732]
but task is already holding lock:
<4> [124.287734] 00000000092837a8 (&dev->struct_mutex/1){+.+.}, at:
userptr_mn_invalidate_range_start+0x173/0x270 [i915]
<4> [124.287767]
which lock already depends on the new lock.
<4> [124.287769]
the existing dependency chain (in reverse order) is:
<4> [124.287772]
-> #1 (&dev->struct_mutex/1){+.+.}:
<4> [124.287798] i915_address_space_init+0x53/0x130 [i915]
<4> [124.287824] i915_ggtt_init_hw+0x50/0x140 [i915]
<4> [124.287846] i915_driver_load+0xe2e/0x1590 [i915]
<4> [124.287868] i915_pci_probe+0x29/0xa0 [i915]
<4> [124.287873] pci_device_probe+0xa1/0x130
<4> [124.287877] really_probe+0xf3/0x3e0
<4> [124.287880] driver_probe_device+0x10a/0x120
<4> [124.287883] __driver_attach+0xdb/0x100
<4> [124.287885] bus_for_each_dev+0x74/0xc0
<4> [124.287888] bus_add_driver+0x15f/0x250
<4> [124.287891] driver_register+0x56/0xe0
<4> [124.287894] do_one_initcall+0x58/0x2e0
<4> [124.287897] do_init_module+0x56/0x1ea
<4> [124.287900] load_module+0x2718/0x29f0
<4> [124.287902] __se_sys_finit_module+0xd3/0xf0
<4> [124.287905] do_syscall_64+0x55/0x190
<4> [124.287908] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [124.287911]
-> #0 (fs_reclaim){+.+.}:
<4> [124.287915] fs_reclaim_acquire.part.25+0x24/0x30
<4> [124.287918] kmem_cache_alloc+0x27/0x280
<4> [124.287922] vm_area_alloc+0x15/0x50
<4> [124.287925] mmap_region+0x306/0x640
<4> [124.287928] do_mmap+0x3d1/0x570
<4> [124.287931] vm_mmap_pgoff+0x98/0xf0
<4> [124.287934] ksys_mmap_pgoff+0x191/0x1f0
<4> [124.287936] do_syscall_64+0x55/0x190
<4> [124.287939] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [124.287941]
other info that might help us debug this:
<4> [124.287944] Possible unsafe locking scenario:
<4> [124.287947] CPU0 CPU1
<4> [124.287948] ---- ----
<4> [124.287950] lock(&dev->struct_mutex/1);
<4> [124.287953] lock(fs_reclaim);
<4> [124.287955] lock(&dev->struct_mutex/1);
<4> [124.287958] lock(fs_reclaim);
<4> [124.287960]
*** DEADLOCK ***
<4> [124.287963] 2 locks held by gem_userptr_bli/2289:
<4> [124.287965] #0: 00000000182dc149 (&mm->mmap_sem){++++}, at:
vm_mmap_pgoff+0x6a/0xf0
<4> [124.287969] #1: 00000000092837a8 (&dev->struct_mutex/1){+.+.}, at:
userptr_mn_invalidate_range_start+0x173/0x270 [i915]
<4> [124.287998]
stack backtrace:
<4> [124.288001] CPU: 1 PID: 2289 Comm: gem_userptr_bli Tainted: G U
5.0.0-rc2-g19fd97ec0d64-drmtip_196+ #1
<4> [124.288005] Hardware name: Hewlett-Packard HP Pro 3500 Series/2ABF, BIOS
8.11 10/24/2012
<4> [124.288008] Call Trace:
<4> [124.288012] dump_stack+0x67/0x9b
<4> [124.288016] print_circular_bug.isra.16+0x1c8/0x2b0
<4> [124.288020] __lock_acquire+0x183a/0x1b00
<4> [124.288023] ? mark_held_locks+0x50/0x80
<4> [124.288027] ? _raw_spin_unlock_irqrestore+0x39/0x60
<4> [124.288030] ? lock_acquire+0xa6/0x1c0
<4> [124.288033] lock_acquire+0xa6/0x1c0
<4> [124.288035] ? free_unref_page_commit.isra.20+0xd0/0xd0
<4> [124.288039] ? vm_area_alloc+0x15/0x50
<4> [124.288041] fs_reclaim_acquire.part.25+0x24/0x30
<4> [124.288044] ? free_unref_page_commit.isra.20+0xd0/0xd0
<4> [124.288047] kmem_cache_alloc+0x27/0x280
<4> [124.288050] vm_area_alloc+0x15/0x50
<4> [124.288053] mmap_region+0x306/0x640
<4> [124.288056] do_mmap+0x3d1/0x570
<4> [124.288059] vm_mmap_pgoff+0x98/0xf0
<4> [124.288062] ksys_mmap_pgoff+0x191/0x1f0
<4> [124.288066] ? lockdep_hardirqs_off+0x79/0xd0
<4> [124.288069] do_syscall_64+0x55/0x190
<4> [124.288072] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [124.288074] RIP: 0033:0x7f808fdc1a13
<4> [124.288077] Code: 89 f5 41 54 41 89 d4 55 48 89 fd 53 4c 89 cb 74 56 49 89
d9 45 89 f8 45 89 f2 44 89 e2 4c 89 ee 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00
f0 ff ff 77 7d 5b 5d 41 5c 41 5d 41 5e 41 5f c3 66 2e 0f
<4> [124.288083] RSP: 002b:00007fff5203c808 EFLAGS: 00000206 ORIG_RAX:
0000000000000009
<4> [124.288086] RAX: ffffffffffffffda RBX: 0000000100000000 RCX:
00007f808fdc1a13
<4> [124.288089] RDX: 0000000000000003 RSI: 0000000000002000 RDI:
00007f8090f1b000
<4> [124.288092] RBP: 00007f8090f1b000 R08: 0000000000000005 R09:
0000000100000000
<4> [124.288095] R10: 0000000000000011 R11: 0000000000000206 R12:
0000000000000003
<4> [124.288097] R13: 0000000000002000 R14: 0000000000000011 R15:
0000000000000005
This might be related to <a class="bz_bug_link
bz_status_NEW "
title="NEW - [CI][DRMTIP] igt@perf_pmu@* - dmesg-warn / incomplete - WARNING: possible circular locking dependency detected"
href="show_bug.cgi?id=109385">https://bugs.freedesktop.org/show_bug.cgi?id=109385</a></pre>
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