| Message ID | 20240626144552.9716-1-bethany.jamison@canonical.com |
|---|---|
| Headers | show |
| Series | CVE-2024-35990 | expand |
On 26.06.24 16:45, Bethany Jamison wrote: > [Impact] > > dma: xilinx_dpdma: Fix locking > > There are several places where either chan->lock or chan->vchan.lock was > not held. Add appropriate locking. This fixes lockdep warnings like > > [ 31.077578] ------------[ cut here ]------------ > [ 31.077831] WARNING: CPU: 2 PID: 40 at drivers/dma/xilinx/xilinx_dpdma.c:834 xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.077953] Modules linked in: > [ 31.078019] CPU: 2 PID: 40 Comm: kworker/u12:1 Not tainted 6.6.20+ #98 > [ 31.078102] Hardware name: xlnx,zynqmp (DT) > [ 31.078169] Workqueue: events_unbound deferred_probe_work_func > [ 31.078272] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 31.078377] pc : xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.078473] lr : xilinx_dpdma_chan_queue_transfer+0x270/0x5e0 > [ 31.078550] sp : ffffffc083bb2e10 > [ 31.078590] x29: ffffffc083bb2e10 x28: 0000000000000000 x27: ffffff880165a168 > [ 31.078754] x26: ffffff880164e920 x25: ffffff880164eab8 x24: ffffff880164d480 > [ 31.078920] x23: ffffff880165a148 x22: ffffff880164e988 x21: 0000000000000000 > [ 31.079132] x20: ffffffc082aa3000 x19: ffffff880164e880 x18: 0000000000000000 > [ 31.079295] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 > [ 31.079453] x14: 0000000000000000 x13: ffffff8802263dc0 x12: 0000000000000001 > [ 31.079613] x11: 0001ffc083bb2e34 x10: 0001ff880164e98f x9 : 0001ffc082aa3def > [ 31.079824] x8 : 0001ffc082aa3dec x7 : 0000000000000000 x6 : 0000000000000516 > [ 31.079982] x5 : ffffffc7f8d43000 x4 : ffffff88003c9c40 x3 : ffffffffffffffff > [ 31.080147] x2 : ffffffc7f8d43000 x1 : 00000000000000c0 x0 : 0000000000000000 > [ 31.080307] Call trace: > [ 31.080340] xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.080518] xilinx_dpdma_issue_pending+0x11c/0x120 > [ 31.080595] zynqmp_disp_layer_update+0x180/0x3ac > [ 31.080712] zynqmp_dpsub_plane_atomic_update+0x11c/0x21c > [ 31.080825] drm_atomic_helper_commit_planes+0x20c/0x684 > [ 31.080951] drm_atomic_helper_commit_tail+0x5c/0xb0 > [ 31.081139] commit_tail+0x234/0x294 > [ 31.081246] drm_atomic_helper_commit+0x1f8/0x210 > [ 31.081363] drm_atomic_commit+0x100/0x140 > [ 31.081477] drm_client_modeset_commit_atomic+0x318/0x384 > [ 31.081634] drm_client_modeset_commit_locked+0x8c/0x24c > [ 31.081725] drm_client_modeset_commit+0x34/0x5c > [ 31.081812] __drm_fb_helper_restore_fbdev_mode_unlocked+0x104/0x168 > [ 31.081899] drm_fb_helper_set_par+0x50/0x70 > [ 31.081971] fbcon_init+0x538/0xc48 > [ 31.082047] visual_init+0x16c/0x23c > [ 31.082207] do_bind_con_driver.isra.0+0x2d0/0x634 > [ 31.082320] do_take_over_console+0x24c/0x33c > [ 31.082429] do_fbcon_takeover+0xbc/0x1b0 > [ 31.082503] fbcon_fb_registered+0x2d0/0x34c > [ 31.082663] register_framebuffer+0x27c/0x38c > [ 31.082767] __drm_fb_helper_initial_config_and_unlock+0x5c0/0x91c > [ 31.082939] drm_fb_helper_initial_config+0x50/0x74 > [ 31.083012] drm_fbdev_dma_client_hotplug+0xb8/0x108 > [ 31.083115] drm_client_register+0xa0/0xf4 > [ 31.083195] drm_fbdev_dma_setup+0xb0/0x1cc > [ 31.083293] zynqmp_dpsub_drm_init+0x45c/0x4e0 > [ 31.083431] zynqmp_dpsub_probe+0x444/0x5e0 > [ 31.083616] platform_probe+0x8c/0x13c > [ 31.083713] really_probe+0x258/0x59c > [ 31.083793] __driver_probe_device+0xc4/0x224 > [ 31.083878] driver_probe_device+0x70/0x1c0 > [ 31.083961] __device_attach_driver+0x108/0x1e0 > [ 31.084052] bus_for_each_drv+0x9c/0x100 > [ 31.084125] __device_attach+0x100/0x298 > [ 31.084207] device_initial_probe+0x14/0x20 > [ 31.084292] bus_probe_device+0xd8/0xdc > [ 31.084368] deferred_probe_work_func+0x11c/0x180 > [ 31.084451] process_one_work+0x3ac/0x988 > [ 31.084643] worker_thread+0x398/0x694 > [ 31.084752] kthread+0x1bc/0x1c0 > [ 31.084848] ret_from_fork+0x10/0x20 > [ 31.084932] irq event stamp: 64549 > [ 31.084970] hardirqs last enabled at (64548): [<ffffffc081adf35c>] _raw_spin_unlock_irqrestore+0x80/0x90 > [ 31.085157] hardirqs last disabled at (64549): [<ffffffc081adf010>] _raw_spin_lock_irqsave+0xc0/0xdc > [ 31.085277] softirqs last enabled at (64503): [<ffffffc08001071c>] __do_softirq+0x47c/0x500 > [ 31.085390] softirqs last disabled at (64498): [<ffffffc080017134>] ____do_softirq+0x10/0x1c > [ 31.085501] ---[ end trace 0000000000000000 ]--- > > [Fix] > > Noble: Clean cherry-pick from linux-6.8.y > Jammy: pending Which kind of pending is this? Applied to jammy:linux/master-next already or pending to be processed? > Focal: not affected > Bionic: not affected > Xenial: not affected > Trusty: not affected > > [Test Case] > > Compile and boot tested > > [Where problems could occur] > > This fix affects those who use the Xilinx ZynqMP DPDMA Engine > driver, an issue with this fix would be visible to the user via > unexpected system behavior. > > Sean Anderson (1): > dma: xilinx_dpdma: Fix locking > > drivers/dma/xilinx/xilinx_dpdma.c | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > Acked-by: Stefan Bader <stefan.bader@canonical.com>
On Wed, Jun 26, 2024 at 09:45:51AM -0500, Bethany Jamison wrote: > [Impact] > > dma: xilinx_dpdma: Fix locking > > There are several places where either chan->lock or chan->vchan.lock was > not held. Add appropriate locking. This fixes lockdep warnings like > > [ 31.077578] ------------[ cut here ]------------ > [ 31.077831] WARNING: CPU: 2 PID: 40 at drivers/dma/xilinx/xilinx_dpdma.c:834 xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.077953] Modules linked in: > [ 31.078019] CPU: 2 PID: 40 Comm: kworker/u12:1 Not tainted 6.6.20+ #98 > [ 31.078102] Hardware name: xlnx,zynqmp (DT) > [ 31.078169] Workqueue: events_unbound deferred_probe_work_func > [ 31.078272] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 31.078377] pc : xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.078473] lr : xilinx_dpdma_chan_queue_transfer+0x270/0x5e0 > [ 31.078550] sp : ffffffc083bb2e10 > [ 31.078590] x29: ffffffc083bb2e10 x28: 0000000000000000 x27: ffffff880165a168 > [ 31.078754] x26: ffffff880164e920 x25: ffffff880164eab8 x24: ffffff880164d480 > [ 31.078920] x23: ffffff880165a148 x22: ffffff880164e988 x21: 0000000000000000 > [ 31.079132] x20: ffffffc082aa3000 x19: ffffff880164e880 x18: 0000000000000000 > [ 31.079295] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 > [ 31.079453] x14: 0000000000000000 x13: ffffff8802263dc0 x12: 0000000000000001 > [ 31.079613] x11: 0001ffc083bb2e34 x10: 0001ff880164e98f x9 : 0001ffc082aa3def > [ 31.079824] x8 : 0001ffc082aa3dec x7 : 0000000000000000 x6 : 0000000000000516 > [ 31.079982] x5 : ffffffc7f8d43000 x4 : ffffff88003c9c40 x3 : ffffffffffffffff > [ 31.080147] x2 : ffffffc7f8d43000 x1 : 00000000000000c0 x0 : 0000000000000000 > [ 31.080307] Call trace: > [ 31.080340] xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.080518] xilinx_dpdma_issue_pending+0x11c/0x120 > [ 31.080595] zynqmp_disp_layer_update+0x180/0x3ac > [ 31.080712] zynqmp_dpsub_plane_atomic_update+0x11c/0x21c > [ 31.080825] drm_atomic_helper_commit_planes+0x20c/0x684 > [ 31.080951] drm_atomic_helper_commit_tail+0x5c/0xb0 > [ 31.081139] commit_tail+0x234/0x294 > [ 31.081246] drm_atomic_helper_commit+0x1f8/0x210 > [ 31.081363] drm_atomic_commit+0x100/0x140 > [ 31.081477] drm_client_modeset_commit_atomic+0x318/0x384 > [ 31.081634] drm_client_modeset_commit_locked+0x8c/0x24c > [ 31.081725] drm_client_modeset_commit+0x34/0x5c > [ 31.081812] __drm_fb_helper_restore_fbdev_mode_unlocked+0x104/0x168 > [ 31.081899] drm_fb_helper_set_par+0x50/0x70 > [ 31.081971] fbcon_init+0x538/0xc48 > [ 31.082047] visual_init+0x16c/0x23c > [ 31.082207] do_bind_con_driver.isra.0+0x2d0/0x634 > [ 31.082320] do_take_over_console+0x24c/0x33c > [ 31.082429] do_fbcon_takeover+0xbc/0x1b0 > [ 31.082503] fbcon_fb_registered+0x2d0/0x34c > [ 31.082663] register_framebuffer+0x27c/0x38c > [ 31.082767] __drm_fb_helper_initial_config_and_unlock+0x5c0/0x91c > [ 31.082939] drm_fb_helper_initial_config+0x50/0x74 > [ 31.083012] drm_fbdev_dma_client_hotplug+0xb8/0x108 > [ 31.083115] drm_client_register+0xa0/0xf4 > [ 31.083195] drm_fbdev_dma_setup+0xb0/0x1cc > [ 31.083293] zynqmp_dpsub_drm_init+0x45c/0x4e0 > [ 31.083431] zynqmp_dpsub_probe+0x444/0x5e0 > [ 31.083616] platform_probe+0x8c/0x13c > [ 31.083713] really_probe+0x258/0x59c > [ 31.083793] __driver_probe_device+0xc4/0x224 > [ 31.083878] driver_probe_device+0x70/0x1c0 > [ 31.083961] __device_attach_driver+0x108/0x1e0 > [ 31.084052] bus_for_each_drv+0x9c/0x100 > [ 31.084125] __device_attach+0x100/0x298 > [ 31.084207] device_initial_probe+0x14/0x20 > [ 31.084292] bus_probe_device+0xd8/0xdc > [ 31.084368] deferred_probe_work_func+0x11c/0x180 > [ 31.084451] process_one_work+0x3ac/0x988 > [ 31.084643] worker_thread+0x398/0x694 > [ 31.084752] kthread+0x1bc/0x1c0 > [ 31.084848] ret_from_fork+0x10/0x20 > [ 31.084932] irq event stamp: 64549 > [ 31.084970] hardirqs last enabled at (64548): [<ffffffc081adf35c>] _raw_spin_unlock_irqrestore+0x80/0x90 > [ 31.085157] hardirqs last disabled at (64549): [<ffffffc081adf010>] _raw_spin_lock_irqsave+0xc0/0xdc > [ 31.085277] softirqs last enabled at (64503): [<ffffffc08001071c>] __do_softirq+0x47c/0x500 > [ 31.085390] softirqs last disabled at (64498): [<ffffffc080017134>] ____do_softirq+0x10/0x1c > [ 31.085501] ---[ end trace 0000000000000000 ]--- > > [Fix] > > Noble: Clean cherry-pick from linux-6.8.y > Jammy: pending > Focal: not affected > Bionic: not affected > Xenial: not affected > Trusty: not affected > > [Test Case] > > Compile and boot tested > > [Where problems could occur] > > This fix affects those who use the Xilinx ZynqMP DPDMA Engine > driver, an issue with this fix would be visible to the user via > unexpected system behavior. > > Sean Anderson (1): > dma: xilinx_dpdma: Fix locking > > drivers/dma/xilinx/xilinx_dpdma.c | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > > -- > 2.34.1 > > > -- > kernel-team mailing list > kernel-team@lists.ubuntu.com > https://lists.ubuntu.com/mailman/listinfo/kernel-team Acked-by: Manuel Diewald <manuel.diewald@canonical.com>
Sorry I should be more clear about this -- it's been applied to master-next (5.15.0-115.125). On 6/28/24 8:22 AM, Stefan Bader wrote: > On 26.06.24 16:45, Bethany Jamison wrote: >> [Impact] >> >> dma: xilinx_dpdma: Fix locking >> >> There are several places where either chan->lock or chan->vchan.lock was >> not held. Add appropriate locking. This fixes lockdep warnings like >> >> [ 31.077578] ------------[ cut here ]------------ >> [ 31.077831] WARNING: CPU: 2 PID: 40 at >> drivers/dma/xilinx/xilinx_dpdma.c:834 >> xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 >> [ 31.077953] Modules linked in: >> [ 31.078019] CPU: 2 PID: 40 Comm: kworker/u12:1 Not tainted 6.6.20+ >> #98 >> [ 31.078102] Hardware name: xlnx,zynqmp (DT) >> [ 31.078169] Workqueue: events_unbound deferred_probe_work_func >> [ 31.078272] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS >> BTYPE=--) >> [ 31.078377] pc : xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 >> [ 31.078473] lr : xilinx_dpdma_chan_queue_transfer+0x270/0x5e0 >> [ 31.078550] sp : ffffffc083bb2e10 >> [ 31.078590] x29: ffffffc083bb2e10 x28: 0000000000000000 x27: >> ffffff880165a168 >> [ 31.078754] x26: ffffff880164e920 x25: ffffff880164eab8 x24: >> ffffff880164d480 >> [ 31.078920] x23: ffffff880165a148 x22: ffffff880164e988 x21: >> 0000000000000000 >> [ 31.079132] x20: ffffffc082aa3000 x19: ffffff880164e880 x18: >> 0000000000000000 >> [ 31.079295] x17: 0000000000000000 x16: 0000000000000000 x15: >> 0000000000000000 >> [ 31.079453] x14: 0000000000000000 x13: ffffff8802263dc0 x12: >> 0000000000000001 >> [ 31.079613] x11: 0001ffc083bb2e34 x10: 0001ff880164e98f x9 : >> 0001ffc082aa3def >> [ 31.079824] x8 : 0001ffc082aa3dec x7 : 0000000000000000 x6 : >> 0000000000000516 >> [ 31.079982] x5 : ffffffc7f8d43000 x4 : ffffff88003c9c40 x3 : >> ffffffffffffffff >> [ 31.080147] x2 : ffffffc7f8d43000 x1 : 00000000000000c0 x0 : >> 0000000000000000 >> [ 31.080307] Call trace: >> [ 31.080340] xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 >> [ 31.080518] xilinx_dpdma_issue_pending+0x11c/0x120 >> [ 31.080595] zynqmp_disp_layer_update+0x180/0x3ac >> [ 31.080712] zynqmp_dpsub_plane_atomic_update+0x11c/0x21c >> [ 31.080825] drm_atomic_helper_commit_planes+0x20c/0x684 >> [ 31.080951] drm_atomic_helper_commit_tail+0x5c/0xb0 >> [ 31.081139] commit_tail+0x234/0x294 >> [ 31.081246] drm_atomic_helper_commit+0x1f8/0x210 >> [ 31.081363] drm_atomic_commit+0x100/0x140 >> [ 31.081477] drm_client_modeset_commit_atomic+0x318/0x384 >> [ 31.081634] drm_client_modeset_commit_locked+0x8c/0x24c >> [ 31.081725] drm_client_modeset_commit+0x34/0x5c >> [ 31.081812] __drm_fb_helper_restore_fbdev_mode_unlocked+0x104/0x168 >> [ 31.081899] drm_fb_helper_set_par+0x50/0x70 >> [ 31.081971] fbcon_init+0x538/0xc48 >> [ 31.082047] visual_init+0x16c/0x23c >> [ 31.082207] do_bind_con_driver.isra.0+0x2d0/0x634 >> [ 31.082320] do_take_over_console+0x24c/0x33c >> [ 31.082429] do_fbcon_takeover+0xbc/0x1b0 >> [ 31.082503] fbcon_fb_registered+0x2d0/0x34c >> [ 31.082663] register_framebuffer+0x27c/0x38c >> [ 31.082767] __drm_fb_helper_initial_config_and_unlock+0x5c0/0x91c >> [ 31.082939] drm_fb_helper_initial_config+0x50/0x74 >> [ 31.083012] drm_fbdev_dma_client_hotplug+0xb8/0x108 >> [ 31.083115] drm_client_register+0xa0/0xf4 >> [ 31.083195] drm_fbdev_dma_setup+0xb0/0x1cc >> [ 31.083293] zynqmp_dpsub_drm_init+0x45c/0x4e0 >> [ 31.083431] zynqmp_dpsub_probe+0x444/0x5e0 >> [ 31.083616] platform_probe+0x8c/0x13c >> [ 31.083713] really_probe+0x258/0x59c >> [ 31.083793] __driver_probe_device+0xc4/0x224 >> [ 31.083878] driver_probe_device+0x70/0x1c0 >> [ 31.083961] __device_attach_driver+0x108/0x1e0 >> [ 31.084052] bus_for_each_drv+0x9c/0x100 >> [ 31.084125] __device_attach+0x100/0x298 >> [ 31.084207] device_initial_probe+0x14/0x20 >> [ 31.084292] bus_probe_device+0xd8/0xdc >> [ 31.084368] deferred_probe_work_func+0x11c/0x180 >> [ 31.084451] process_one_work+0x3ac/0x988 >> [ 31.084643] worker_thread+0x398/0x694 >> [ 31.084752] kthread+0x1bc/0x1c0 >> [ 31.084848] ret_from_fork+0x10/0x20 >> [ 31.084932] irq event stamp: 64549 >> [ 31.084970] hardirqs last enabled at (64548): >> [<ffffffc081adf35c>] _raw_spin_unlock_irqrestore+0x80/0x90 >> [ 31.085157] hardirqs last disabled at (64549): >> [<ffffffc081adf010>] _raw_spin_lock_irqsave+0xc0/0xdc >> [ 31.085277] softirqs last enabled at (64503): >> [<ffffffc08001071c>] __do_softirq+0x47c/0x500 >> [ 31.085390] softirqs last disabled at (64498): >> [<ffffffc080017134>] ____do_softirq+0x10/0x1c >> [ 31.085501] ---[ end trace 0000000000000000 ]--- >> >> [Fix] >> >> Noble: Clean cherry-pick from linux-6.8.y >> Jammy: pending > > Which kind of pending is this? Applied to jammy:linux/master-next > already or pending to be processed? > >> Focal: not affected >> Bionic: not affected >> Xenial: not affected >> Trusty: not affected >> >> [Test Case] >> >> Compile and boot tested >> >> [Where problems could occur] >> >> This fix affects those who use the Xilinx ZynqMP DPDMA Engine >> driver, an issue with this fix would be visible to the user via >> unexpected system behavior. >> >> Sean Anderson (1): >> dma: xilinx_dpdma: Fix locking >> >> drivers/dma/xilinx/xilinx_dpdma.c | 13 ++++++++++--- >> 1 file changed, 10 insertions(+), 3 deletions(-) >> > > Acked-by: Stefan Bader <stefan.bader@canonical.com>
On 26.06.24 16:45, Bethany Jamison wrote: > [Impact] > > dma: xilinx_dpdma: Fix locking > > There are several places where either chan->lock or chan->vchan.lock was > not held. Add appropriate locking. This fixes lockdep warnings like > > [ 31.077578] ------------[ cut here ]------------ > [ 31.077831] WARNING: CPU: 2 PID: 40 at drivers/dma/xilinx/xilinx_dpdma.c:834 xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.077953] Modules linked in: > [ 31.078019] CPU: 2 PID: 40 Comm: kworker/u12:1 Not tainted 6.6.20+ #98 > [ 31.078102] Hardware name: xlnx,zynqmp (DT) > [ 31.078169] Workqueue: events_unbound deferred_probe_work_func > [ 31.078272] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) > [ 31.078377] pc : xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.078473] lr : xilinx_dpdma_chan_queue_transfer+0x270/0x5e0 > [ 31.078550] sp : ffffffc083bb2e10 > [ 31.078590] x29: ffffffc083bb2e10 x28: 0000000000000000 x27: ffffff880165a168 > [ 31.078754] x26: ffffff880164e920 x25: ffffff880164eab8 x24: ffffff880164d480 > [ 31.078920] x23: ffffff880165a148 x22: ffffff880164e988 x21: 0000000000000000 > [ 31.079132] x20: ffffffc082aa3000 x19: ffffff880164e880 x18: 0000000000000000 > [ 31.079295] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 > [ 31.079453] x14: 0000000000000000 x13: ffffff8802263dc0 x12: 0000000000000001 > [ 31.079613] x11: 0001ffc083bb2e34 x10: 0001ff880164e98f x9 : 0001ffc082aa3def > [ 31.079824] x8 : 0001ffc082aa3dec x7 : 0000000000000000 x6 : 0000000000000516 > [ 31.079982] x5 : ffffffc7f8d43000 x4 : ffffff88003c9c40 x3 : ffffffffffffffff > [ 31.080147] x2 : ffffffc7f8d43000 x1 : 00000000000000c0 x0 : 0000000000000000 > [ 31.080307] Call trace: > [ 31.080340] xilinx_dpdma_chan_queue_transfer+0x274/0x5e0 > [ 31.080518] xilinx_dpdma_issue_pending+0x11c/0x120 > [ 31.080595] zynqmp_disp_layer_update+0x180/0x3ac > [ 31.080712] zynqmp_dpsub_plane_atomic_update+0x11c/0x21c > [ 31.080825] drm_atomic_helper_commit_planes+0x20c/0x684 > [ 31.080951] drm_atomic_helper_commit_tail+0x5c/0xb0 > [ 31.081139] commit_tail+0x234/0x294 > [ 31.081246] drm_atomic_helper_commit+0x1f8/0x210 > [ 31.081363] drm_atomic_commit+0x100/0x140 > [ 31.081477] drm_client_modeset_commit_atomic+0x318/0x384 > [ 31.081634] drm_client_modeset_commit_locked+0x8c/0x24c > [ 31.081725] drm_client_modeset_commit+0x34/0x5c > [ 31.081812] __drm_fb_helper_restore_fbdev_mode_unlocked+0x104/0x168 > [ 31.081899] drm_fb_helper_set_par+0x50/0x70 > [ 31.081971] fbcon_init+0x538/0xc48 > [ 31.082047] visual_init+0x16c/0x23c > [ 31.082207] do_bind_con_driver.isra.0+0x2d0/0x634 > [ 31.082320] do_take_over_console+0x24c/0x33c > [ 31.082429] do_fbcon_takeover+0xbc/0x1b0 > [ 31.082503] fbcon_fb_registered+0x2d0/0x34c > [ 31.082663] register_framebuffer+0x27c/0x38c > [ 31.082767] __drm_fb_helper_initial_config_and_unlock+0x5c0/0x91c > [ 31.082939] drm_fb_helper_initial_config+0x50/0x74 > [ 31.083012] drm_fbdev_dma_client_hotplug+0xb8/0x108 > [ 31.083115] drm_client_register+0xa0/0xf4 > [ 31.083195] drm_fbdev_dma_setup+0xb0/0x1cc > [ 31.083293] zynqmp_dpsub_drm_init+0x45c/0x4e0 > [ 31.083431] zynqmp_dpsub_probe+0x444/0x5e0 > [ 31.083616] platform_probe+0x8c/0x13c > [ 31.083713] really_probe+0x258/0x59c > [ 31.083793] __driver_probe_device+0xc4/0x224 > [ 31.083878] driver_probe_device+0x70/0x1c0 > [ 31.083961] __device_attach_driver+0x108/0x1e0 > [ 31.084052] bus_for_each_drv+0x9c/0x100 > [ 31.084125] __device_attach+0x100/0x298 > [ 31.084207] device_initial_probe+0x14/0x20 > [ 31.084292] bus_probe_device+0xd8/0xdc > [ 31.084368] deferred_probe_work_func+0x11c/0x180 > [ 31.084451] process_one_work+0x3ac/0x988 > [ 31.084643] worker_thread+0x398/0x694 > [ 31.084752] kthread+0x1bc/0x1c0 > [ 31.084848] ret_from_fork+0x10/0x20 > [ 31.084932] irq event stamp: 64549 > [ 31.084970] hardirqs last enabled at (64548): [<ffffffc081adf35c>] _raw_spin_unlock_irqrestore+0x80/0x90 > [ 31.085157] hardirqs last disabled at (64549): [<ffffffc081adf010>] _raw_spin_lock_irqsave+0xc0/0xdc > [ 31.085277] softirqs last enabled at (64503): [<ffffffc08001071c>] __do_softirq+0x47c/0x500 > [ 31.085390] softirqs last disabled at (64498): [<ffffffc080017134>] ____do_softirq+0x10/0x1c > [ 31.085501] ---[ end trace 0000000000000000 ]--- > > [Fix] > > Noble: Clean cherry-pick from linux-6.8.y > Jammy: pending > Focal: not affected > Bionic: not affected > Xenial: not affected > Trusty: not affected > > [Test Case] > > Compile and boot tested > > [Where problems could occur] > > This fix affects those who use the Xilinx ZynqMP DPDMA Engine > driver, an issue with this fix would be visible to the user via > unexpected system behavior. > > Sean Anderson (1): > dma: xilinx_dpdma: Fix locking > > drivers/dma/xilinx/xilinx_dpdma.c | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > Rejected for the following reasons: Already applied for Noble update: v6.8.9 upstream stable release . CVE number added to commit message. -Stefan