Hello all,
We found this error when using Freedreno driver on an i.MX53 device
with Wayland. Any idea how to fix this?
[ 32.414110] [drm:msm_ioctl_gem_submit] *ERROR* invalid cmdstream size: 0
[ 39.177075]
[ 39.178617] ======================================================
[ 39.184804] WARNING: possible circular locking dependency detected
[ 39.190997] 5.10.31+g7ae1de1d2bd3 #1 Not tainted
[ 39.195619] ------------------------------------------------------
[ 39.201805] kworker/u2:1/68 is trying to acquire lock:
[ 39.206953] c2b952fc (reservation_ww_class_mutex){+.+.}-{3:3}, at:
dma_buf_detach+0xd0/0x1e0
[ 39.215448]
[ 39.215448] but task is already holding lock:
[ 39.221286] c2b957b0 (&msm_obj->lock){+.+.}-{3:3}, at:
msm_gem_free_work+0x118/0x1b0
[ 39.229062]
[ 39.229062] which lock already depends on the new lock.
[ 39.229062]
[ 39.237243]
[ 39.237243] the existing dependency chain (in reverse order) is:
[ 39.244729]
[ 39.244729] -> #1 (&msm_obj->lock){+.+.}-{3:3}:
[ 39.250769] mutex_lock_nested+0x1c/0x24
[ 39.255220] msm_gem_get_and_pin_iova_range+0x38/0x170
[ 39.260885] msm_gem_get_and_pin_iova+0x24/0x2c
[ 39.265946] msm_ioctl_gem_submit+0x12c0/0x1964
[ 39.271008] drm_ioctl+0x1f0/0x3e0
[ 39.274940] sys_ioctl+0x3bc/0xbe0
[ 39.278873] ret_fast_syscall+0x0/0x28
[ 39.283150] 0xbed4deac
[ 39.286122]
[ 39.286122] -> #0 (reservation_ww_class_mutex){+.+.}-{3:3}:
[ 39.293208] lock_acquire+0x134/0x560
[ 39.297398] __ww_mutex_lock.constprop.0+0xbc/0x1124
[ 39.302889] ww_mutex_lock+0x68/0xb4
[ 39.306993] dma_buf_detach+0xd0/0x1e0
[ 39.311271] drm_prime_gem_destroy+0x2c/0x38
[ 39.316068] msm_gem_free_work+0xa0/0x1b0
[ 39.320611] process_one_work+0x2a8/0x7ec
[ 39.325149] worker_thread+0x4c/0x554
[ 39.329339] kthread+0x140/0x154
[ 39.333095] ret_from_fork+0x14/0x20
[ 39.337196] 0x0
[ 39.339560]
[ 39.339560] other info that might help us debug this:
[ 39.339560]
[ 39.347568] Possible unsafe locking scenario:
[ 39.347568]
[ 39.353491] CPU0 CPU1
[ 39.358025] ---- ----
[ 39.362557] lock(&msm_obj->lock);
[ 39.366061] lock(reservation_ww_class_mutex);
[ 39.373123] lock(&msm_obj->lock);
[ 39.379143] lock(reservation_ww_class_mutex);
[ 39.383689]
[ 39.383689] *** DEADLOCK ***
[ 39.383689]
[ 39.389614] 4 locks held by kworker/u2:1/68:
[ 39.393888] #0: c24138a8 ((wq_completion)msm){+.+.}-{0:0}, at:
process_one_work+0x1f4/0x7ec
[ 39.402362] #1: c26a1f20
((work_completion)(&priv->free_work)){+.+.}-{0:0}, at:
process_one_work+0x1f4/0x7ec
[ 39.412312] #2: c24188a4 (&dev->struct_mutex){+.+.}-{3:3}, at:
msm_gem_free_work+0x68/0x1b0
[ 39.420784] #3: c2b957b0 (&msm_obj->lock){+.+.}-{3:3}, at:
msm_gem_free_work+0x118/0x1b0
[ 39.428996]
[ 39.428996] stack backtrace:
[ 39.433363] CPU: 0 PID: 68 Comm: kworker/u2:1 Not tainted
5.10.31+g7ae1de1d2bd3 #1
[ 39.440937] Hardware name: Freescale i.MX53 (Device Tree Support)
[ 39.447044] Workqueue: msm msm_gem_free_work
[ 39.451346] [<c0111258>] (unwind_backtrace) from [<c010ba00>]
(show_stack+0x10/0x14)
[ 39.459107] [<c010ba00>] (show_stack) from [<c0e2b560>]
(dump_stack+0xdc/0x104)
[ 39.466430] [<c0e2b560>] (dump_stack) from [<c01838d8>]
(check_noncircular+0xf0/0x160)
[ 39.474358] [<c01838d8>] (check_noncircular) from [<c0187060>]
(__lock_acquire+0x1628/0x2e04)
[ 39.482893] [<c0187060>] (__lock_acquire) from [<c01892e8>]
(lock_acquire+0x134/0x560)
[ 39.490821] [<c01892e8>] (lock_acquire) from [<c0e3da60>]
(__ww_mutex_lock.constprop.0+0xbc/0x1124)
[ 39.499877] [<c0e3da60>] (__ww_mutex_lock.constprop.0) from
[<c0e3ebe4>] (ww_mutex_lock+0x68/0xb4)
[ 39.508844] [<c0e3ebe4>] (ww_mutex_lock) from [<c080e6a8>]
(dma_buf_detach+0xd0/0x1e0)
[ 39.516771] [<c080e6a8>] (dma_buf_detach) from [<c0701d04>]
(drm_prime_gem_destroy+0x2c/0x38)
[ 39.525305] [<c0701d04>] (drm_prime_gem_destroy) from [<c077d334>]
(msm_gem_free_work+0xa0/0x1b0)
[ 39.534188] [<c077d334>] (msm_gem_free_work) from [<c0147588>]
(process_one_work+0x2a8/0x7ec)
[ 39.542725] [<c0147588>] (process_one_work) from [<c0147b18>]
(worker_thread+0x4c/0x554)
[ 39.550825] [<c0147b18>] (worker_thread) from [<c014ebb0>]
(kthread+0x140/0x154)
[ 39.558229] [<c014ebb0>] (kthread) from [<c0100134>]
(ret_from_fork+0x14/0x20)
[ 39.565457] Exception stack(0xc26a1fb0 to 0xc26a1ff8)
[ 39.570517] 1fa0: 00000000
00000000 00000000 00000000
[ 39.578703] 1fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 39.586890] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
This looks like a regression as it used to run fine on 5.4 Linux kernel.
Any idea of patch reference to test is welcome.
--
Otavio Salvador O.S. Systems
http://www.ossystems.com.br http://code.ossystems.com.br
Mobile: +55 (53) 9 9981-7854 Mobile: +1 (347) 903-9750
