[Bug 109372] New: [CI][SHARDS] igt at gem_userptr_blits@map-fixed-invalidate-* - incomplete - possible circular locking dependency detected
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Wed Jan 16 08:57:18 UTC 2019
https://bugs.freedesktop.org/show_bug.cgi?id=109372
Bug ID: 109372
Summary: [CI][SHARDS]
igt at gem_userptr_blits@map-fixed-invalidate-* -
incomplete - possible circular locking dependency
detected
Product: DRI
Version: XOrg git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: martin.peres at free.fr
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_5430/shard-iclb7/igt@gem_userptr_blits@map-fixed-invalidate-overlap-gup.html
<6> [1143.902698] [IGT] gem_userptr_blits: executing
<6> [1143.916727] [IGT] gem_userptr_blits: starting subtest
map-fixed-invalidate-overlap-gup
<6> [1144.126951] userptr_mn_invalidate_range_start+0x0/0x270 [i915] callback
failed with -4 in blockable context.
<4> [1144.127444]
<4> [1144.127448] ======================================================
<4> [1144.127451] WARNING: possible circular locking dependency detected
<4> [1144.127454] 5.0.0-rc2-CI-CI_DRM_5430+ #1 Tainted: G U
<4> [1144.127457] ------------------------------------------------------
<4> [1144.127459] gem_userptr_bli/2573 is trying to acquire lock:
<4> [1144.127463] 00000000eafecd85 (fs_reclaim){+.+.}, at:
fs_reclaim_acquire.part.25+0x0/0x30
<4> [1144.127471]
but task is already holding lock:
<4> [1144.127473] 000000007d5940b7 (&dev->struct_mutex/1){+.+.}, at:
userptr_mn_invalidate_range_start+0x173/0x270 [i915]
<4> [1144.127513]
which lock already depends on the new lock.
<4> [1144.127516]
the existing dependency chain (in reverse order) is:
<4> [1144.127519]
-> #1 (&dev->struct_mutex/1){+.+.}:
<4> [1144.127551] i915_address_space_init+0x53/0x130 [i915]
<4> [1144.127580] i915_ggtt_init_hw+0x50/0x140 [i915]
<4> [1144.127605] i915_driver_load+0xe2e/0x1590 [i915]
<4> [1144.127632] i915_pci_probe+0x29/0xa0 [i915]
<4> [1144.127637] pci_device_probe+0xa1/0x130
<4> [1144.127642] really_probe+0xf3/0x3e0
<4> [1144.127645] driver_probe_device+0x10a/0x120
<4> [1144.127649] __driver_attach+0xdb/0x100
<4> [1144.127653] bus_for_each_dev+0x74/0xc0
<4> [1144.127656] bus_add_driver+0x15f/0x250
<4> [1144.127660] driver_register+0x56/0xe0
<4> [1144.127664] do_one_initcall+0x58/0x2e0
<4> [1144.127667] do_init_module+0x56/0x1ea
<4> [1144.127672] load_module+0x2718/0x29f0
<4> [1144.127675] __se_sys_finit_module+0xd3/0xf0
<4> [1144.127678] do_syscall_64+0x55/0x190
<4> [1144.127682] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [1144.127685]
-> #0 (fs_reclaim){+.+.}:
<4> [1144.127690] fs_reclaim_acquire.part.25+0x24/0x30
<4> [1144.127695] kmem_cache_alloc+0x27/0x280
<4> [1144.127699] vm_area_alloc+0x15/0x50
<4> [1144.127702] mmap_region+0x2f4/0x620
<4> [1144.127706] do_mmap+0x3d1/0x570
<4> [1144.127710] vm_mmap_pgoff+0x98/0xf0
<4> [1144.127713] ksys_mmap_pgoff+0x191/0x1f0
<4> [1144.127716] do_syscall_64+0x55/0x190
<4> [1144.127720] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [1144.127722]
other info that might help us debug this:
<4> [1144.127726] Possible unsafe locking scenario:
<4> [1144.127729] CPU0 CPU1
<4> [1144.127732] ---- ----
<4> [1144.127734] lock(&dev->struct_mutex/1);
<4> [1144.127737] lock(fs_reclaim);
<4> [1144.127740] lock(&dev->struct_mutex/1);
<4> [1144.127744] lock(fs_reclaim);
<4> [1144.127746]
*** DEADLOCK ***
<4> [1144.127750] 2 locks held by gem_userptr_bli/2573:
<4> [1144.127753] #0: 000000001619b874 (&mm->mmap_sem){++++}, at:
vm_mmap_pgoff+0x6a/0xf0
<4> [1144.127759] #1: 000000007d5940b7 (&dev->struct_mutex/1){+.+.}, at:
userptr_mn_invalidate_range_start+0x173/0x270 [i915]
<4> [1144.127796]
stack backtrace:
<4> [1144.127800] CPU: 3 PID: 2573 Comm: gem_userptr_bli Tainted: G U
5.0.0-rc2-CI-CI_DRM_5430+ #1
<4> [1144.127805] Hardware name: Intel Corporation Ice Lake Client
Platform/IceLake U DDR4 SODIMM PD RVP, BIOS ICLSFWR1.R00.2402.AD3.1810170014
10/17/2018
<4> [1144.127810] Call Trace:
<4> [1144.127838] dump_stack+0x67/0x9b
<4> [1144.127843] print_circular_bug.isra.16+0x1c8/0x2b0
<4> [1144.127848] __lock_acquire+0x183a/0x1b00
<4> [1144.127852] ? mark_held_locks+0x50/0x80
<4> [1144.127856] ? _raw_spin_unlock_irqrestore+0x39/0x60
<4> [1144.127861] ? lock_acquire+0xa6/0x1c0
<4> [1144.127864] lock_acquire+0xa6/0x1c0
<4> [1144.127868] ? free_unref_page_commit.isra.20+0xd0/0xd0
<4> [1144.127872] ? vm_area_alloc+0x15/0x50
<4> [1144.127875] fs_reclaim_acquire.part.25+0x24/0x30
<4> [1144.127879] ? free_unref_page_commit.isra.20+0xd0/0xd0
<4> [1144.127883] kmem_cache_alloc+0x27/0x280
<4> [1144.127887] vm_area_alloc+0x15/0x50
<4> [1144.127891] mmap_region+0x2f4/0x620
<4> [1144.127895] do_mmap+0x3d1/0x570
<4> [1144.127899] vm_mmap_pgoff+0x98/0xf0
<4> [1144.127904] ksys_mmap_pgoff+0x191/0x1f0
<4> [1144.127908] ? lockdep_hardirqs_off+0x79/0xd0
<4> [1144.127912] do_syscall_64+0x55/0x190
<4> [1144.127915] entry_SYSCALL_64_after_hwframe+0x49/0xbe
<4> [1144.127920] RIP: 0033:0x7fd9cf55ca13
<4> [1144.127924] 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> [1144.127931] RSP: 002b:00007ffdf977ec98 EFLAGS: 00000206 ORIG_RAX:
0000000000000009
<4> [1144.127945] RAX: ffffffffffffffda RBX: 0000000100008000 RCX:
00007fd9cf55ca13
<4> [1144.127949] RDX: 0000000000000003 RSI: 0000000000002000 RDI:
00007fd9d067a000
<4> [1144.127952] RBP: 00007fd9d067a000 R08: 0000000000000005 R09:
0000000100008000
<4> [1144.127956] R10: 0000000000000011 R11: 0000000000000206 R12:
0000000000000003
<4> [1144.127960] R13: 0000000000002000 R14: 0000000000000011 R15:
0000000000000005
<7> [1146.739078] [drm:edp_panel_vdd_off_sync [i915]] Turning eDP port A VDD
off
<7> [1146.739395] [drm:edp_panel_vdd_off_sync [i915]] PP_STATUS: 0x80000008
PP_CONTROL: 0x00000067
<7> [1146.739539] [drm:intel_power_well_disable [i915]] disabling DC off
<7> [1146.739684] [drm:skl_enable_dc6 [i915]] Enabling DC6
<7> [1146.739870] [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 02
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