On Mon, Nov 15, 2021 at 05:04:36PM +0100, megi xff wrote: > On Mon, Nov 15, 2021 at 04:05:02PM +0100, Daniel Vetter wrote: > > You need > > > > commit 13e9e30cafea10dff6bc8d63a38a61249e83fd65 > > Author: Christian König <christian.koenig@xxxxxxx> > > Date: Mon Oct 18 21:27:55 2021 +0200 > > > > drm/scheduler: fix drm_sched_job_add_implicit_dependencies > > Thank you, that fixed the panic. :) I spoke too soon. Panic is gone, but I still see (immediately after starting Xorg): [ 13.290795] ------------[ cut here ]------------ [ 13.291103] refcount_t: addition on 0; use-after-free. [ 13.291495] WARNING: CPU: 5 PID: 548 at lib/refcount.c:25 refcount_warn_saturate+0x98/0x140 [ 13.292124] Modules linked in: [ 13.292285] CPU: 5 PID: 548 Comm: Xorg Not tainted 5.16.0-rc1-00414-g21a254904a26 #29 [ 13.292857] Hardware name: Pine64 PinePhonePro (DT) [ 13.293172] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 13.293669] pc : refcount_warn_saturate+0x98/0x140 [ 13.293977] lr : refcount_warn_saturate+0x98/0x140 [ 13.294285] sp : ffff8000129a3b50 [ 13.294464] x29: ffff8000129a3b50 x28: ffff8000129a3d50 x27: ffff000017ec4b00 [ 13.294979] x26: 0000000000000001 x25: 0000000000000001 x24: ffff0000127cca48 [ 13.295494] x23: ffff000017d19b00 x22: 000000000000000a x21: 0000000000000001 [ 13.296006] x20: ffff000017e15500 x19: ffff000012980580 x18: 0000000000000003 [ 13.296520] x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000129a3b58 [ 13.297033] x14: ffffffffffffffff x13: 2e656572662d7265 x12: 7466612d65737520 [ 13.297546] x11: 3b30206e6f206e6f x10: ffff800011d6e8a0 x9 : ffff80001022f37c [ 13.298059] x8 : 00000000ffffefff x7 : ffff800011dc68a0 x6 : 0000000000000001 [ 13.298573] x5 : 0000000000000000 x4 : ffff0000f77a9788 x3 : ffff0000f77b56f0 [ 13.299085] x2 : ffff0000f77a9788 x1 : ffff8000e5eb1000 x0 : 000000000000002a [ 13.299600] Call trace: [ 13.299704] refcount_warn_saturate+0x98/0x140 [ 13.299981] drm_sched_job_add_implicit_dependencies+0x90/0xdc [ 13.300385] panfrost_job_push+0xd0/0x1d4 [ 13.300628] panfrost_ioctl_submit+0x34c/0x440 [ 13.300906] drm_ioctl_kernel+0x9c/0x154 [ 13.301142] drm_ioctl+0x1f0/0x410 [ 13.301330] __arm64_sys_ioctl+0xb4/0xdc [ 13.301566] invoke_syscall+0x4c/0x110 [ 13.301787] el0_svc_common.constprop.0+0x48/0xf0 [ 13.302090] do_el0_svc+0x2c/0x90 [ 13.302271] el0_svc+0x14/0x50 [ 13.302431] el0t_64_sync_handler+0x9c/0x120 [ 13.302693] el0t_64_sync+0x158/0x15c [ 13.302904] ---[ end trace 8c211e57f89714c8 ]--- [ 13.303211] ------------[ cut here ]------------ [ 13.303504] refcount_t: underflow; use-after-free. [ 13.303820] WARNING: CPU: 5 PID: 548 at lib/refcount.c:28 refcount_warn_saturate+0xec/0x140 [ 13.304439] Modules linked in: [ 13.304596] CPU: 5 PID: 548 Comm: Xorg Tainted: G W 5.16.0-rc1-00414-g21a254904a26 #29 [ 13.305286] Hardware name: Pine64 PinePhonePro (DT) [ 13.305600] pstate: 40000005 (nZcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 13.306095] pc : refcount_warn_saturate+0xec/0x140 [ 13.306402] lr : refcount_warn_saturate+0xec/0x140 [ 13.306710] sp : ffff8000129a3b70 [ 13.306887] x29: ffff8000129a3b70 x28: ffff8000129a3d50 x27: ffff000017ec4b00 [ 13.307401] x26: 0000000000000001 x25: 0000000000000001 x24: 0000000000000000 [ 13.307914] x23: 00000000ffffffff x22: ffff0000129807c0 x21: ffff000012980580 [ 13.308428] x20: ffff000017c54d00 x19: 0000000000000000 x18: 0000000000000003 [ 13.308942] x17: 0000000000000000 x16: 0000000000000000 x15: ffff8000129a3b58 [ 13.309454] x14: ffffffffffffffff x13: 2e656572662d7265 x12: 7466612d65737520 [ 13.309967] x11: 3b776f6c66726564 x10: ffff800011d6e8a0 x9 : ffff80001017893c [ 13.310480] x8 : 00000000ffffefff x7 : ffff800011dc68a0 x6 : 0000000000000001 [ 13.310993] x5 : ffff0000f77a9788 x4 : 0000000000000000 x3 : 0000000000000027 [ 13.311506] x2 : 0000000000000023 x1 : ffff0000f77a9790 x0 : 0000000000000026 [ 13.312020] Call trace: [ 13.312123] refcount_warn_saturate+0xec/0x140 [ 13.312401] dma_resv_add_excl_fence+0x1a8/0x1bc [ 13.312700] panfrost_job_push+0x174/0x1d4 [ 13.312949] panfrost_ioctl_submit+0x34c/0x440 [ 13.313229] drm_ioctl_kernel+0x9c/0x154 [ 13.313464] drm_ioctl+0x1f0/0x410 [ 13.313651] __arm64_sys_ioctl+0xb4/0xdc [ 13.313884] invoke_syscall+0x4c/0x110 [ 13.314103] el0_svc_common.constprop.0+0x48/0xf0 [ 13.314405] do_el0_svc+0x2c/0x90 [ 13.314586] el0_svc+0x14/0x50 [ 13.314745] el0t_64_sync_handler+0x9c/0x120 [ 13.315007] el0t_64_sync+0x158/0x15c [ 13.315217] ---[ end trace 8c211e57f89714c9 ]--- In dmesg. So this looks like some independent issue. kind regards, o. > kind regards, > Ondrej > > > which Christian pushed to drm-misc-next instead of drm-misc-fixes. I > > already asked Christian in some other thread to cherry-pick it over. > > -Daniel > > > > On Mon, Nov 15, 2021 at 3:56 PM Daniel Stone <daniel@xxxxxxxxxxxxx> wrote: > > > Hi Ondrej, > > > > > > On Mon, 15 Nov 2021 at 07:35, Ondřej Jirman <megi@xxxxxx> wrote: > > > > I'm getting some fence refcounting related panics with the current > > > > Linus's master branch: > > > > > > > > It happens immediately whenever I start Xorg or sway. > > > > > > > > Anyone has any ideas where to start looking? It works fine with v5.15. > > > > > > > > (sorry for the interleaved log, it's coming from multiple CPUs at once > > > > I guess) > > > > > > Thanks a lot for the report - are you able to bisect this please? > > > > > > Cheers, > > > Daniel > > > > > > > > -- > > Daniel Vetter > > Software Engineer, Intel Corporation > > http://blog.ffwll.ch
