Public bug reported:
[ Impact ]
* EFAULT is handled as a non-fatal error that can trigger more issues
due to bad handling such as
[ 191.738349] WARNING: CPU: 1 PID: 157 at
drivers/gpu/drm/xe/xe_res_cursor.h:158 xe_pt_stage_bind.constprop.0+0x60a/0x6b0
[xe]
[ 191.738551] Workqueue: xe-ordered-wq preempt_rebind_work_func [xe]
[ 191.738616] RIP: 0010:xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
[ 191.738690] Call Trace:
[ 191.738692] <TASK>
[ 191.738694] ? show_regs+0x69/0x80
[ 191.738698] ? __warn+0x93/0x1a0
[ 191.738703] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
[ 191.738759] ? report_bug+0x18f/0x1a0
[ 191.738764] ? handle_bug+0x63/0xa0
[ 191.738767] ? exc_invalid_op+0x19/0x70
[ 191.738770] ? asm_exc_invalid_op+0x1b/0x20
[ 191.738777] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
[ 191.738834] ? ret_from_fork_asm+0x1a/0x30
[ 191.738849] bind_op_prepare+0x105/0x7b0 [xe]
[ 191.738906] ? dma_resv_reserve_fences+0x301/0x380
[ 191.738912] xe_pt_update_ops_prepare+0x28c/0x4b0 [xe]
[ 191.738966] ? kmemleak_alloc+0x4b/0x80
[ 191.738973] ops_execute+0x188/0x9d0 [xe]
[ 191.739036] xe_vm_rebind+0x4ce/0x5a0 [xe]
[ 191.739098] ? trace_hardirqs_on+0x4d/0x60
[ 191.739112] preempt_rebind_work_func+0x76f/0xd00 [xe]
[ Fix ]
* upstream fix :
6b93cb98910c drm/xe/userptr: fix EFAULT handling
[ Test Plan ]
* Compiled.
[ Where problems could occur ]
* Regression in error handling mechanism in BMG driver.
[ Other Info ]
* Pointed by intel as missing.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Thibault Ferrante (thibf)
Status: New
** Affects: linux (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Thibault Ferrante (thibf)
** Also affects: linux (Ubuntu Oracular)
Importance: Undecided
Status: New
** Also affects: linux-intel (Ubuntu Oracular)
Importance: Undecided
Status: New
** No longer affects: linux-intel (Ubuntu)
** No longer affects: linux-intel (Ubuntu Oracular)
** Description changed:
[ Impact ]
- * EFAULT is handled as a non-fatal error that can trigger more issues
+ * EFAULT is handled as a non-fatal error that can trigger more issues
due to bad handling such as
- [ 191.738349] WARNING: CPU: 1 PID: 157 at
drivers/gpu/drm/xe/xe_res_cursor.h:158 xe_pt_stage_bind.constprop.0+0x60a/0x6b0
+ [ 191.738349] WARNING: CPU: 1 PID: 157 at
drivers/gpu/drm/xe/xe_res_cursor.h:158 xe_pt_stage_bind.constprop.0+0x60a/0x6b0
[xe]
- [ 191.738551] Workqueue: xe-ordered-wq preempt_rebind_work_func [xe]
- [ 191.738616] RIP: 0010:xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
- [ 191.738690] Call Trace:
- [ 191.738692] <TASK>
- [ 191.738694] ? show_regs+0x69/0x80
- [ 191.738698] ? __warn+0x93/0x1a0
- [ 191.738703] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
- [ 191.738759] ? report_bug+0x18f/0x1a0
- [ 191.738764] ? handle_bug+0x63/0xa0
- [ 191.738767] ? exc_invalid_op+0x19/0x70
- [ 191.738770] ? asm_exc_invalid_op+0x1b/0x20
- [ 191.738777] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
- [ 191.738834] ? ret_from_fork_asm+0x1a/0x30
- [ 191.738849] bind_op_prepare+0x105/0x7b0 [xe]
- [ 191.738906] ? dma_resv_reserve_fences+0x301/0x380
- [ 191.738912] xe_pt_update_ops_prepare+0x28c/0x4b0 [xe]
- [ 191.738966] ? kmemleak_alloc+0x4b/0x80
- [ 191.738973] ops_execute+0x188/0x9d0 [xe]
- [ 191.739036] xe_vm_rebind+0x4ce/0x5a0 [xe]
- [ 191.739098] ? trace_hardirqs_on+0x4d/0x60
- [ 191.739112] preempt_rebind_work_func+0x76f/0xd00 [xe]
-
+ [ 191.738551] Workqueue: xe-ordered-wq preempt_rebind_work_func [xe]
+ [ 191.738616] RIP: 0010:xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
+ [ 191.738690] Call Trace:
+ [ 191.738692] <TASK>
+ [ 191.738694] ? show_regs+0x69/0x80
+ [ 191.738698] ? __warn+0x93/0x1a0
+ [ 191.738703] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
+ [ 191.738759] ? report_bug+0x18f/0x1a0
+ [ 191.738764] ? handle_bug+0x63/0xa0
+ [ 191.738767] ? exc_invalid_op+0x19/0x70
+ [ 191.738770] ? asm_exc_invalid_op+0x1b/0x20
+ [ 191.738777] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
+ [ 191.738834] ? ret_from_fork_asm+0x1a/0x30
+ [ 191.738849] bind_op_prepare+0x105/0x7b0 [xe]
+ [ 191.738906] ? dma_resv_reserve_fences+0x301/0x380
+ [ 191.738912] xe_pt_update_ops_prepare+0x28c/0x4b0 [xe]
+ [ 191.738966] ? kmemleak_alloc+0x4b/0x80
+ [ 191.738973] ops_execute+0x188/0x9d0 [xe]
+ [ 191.739036] xe_vm_rebind+0x4ce/0x5a0 [xe]
+ [ 191.739098] ? trace_hardirqs_on+0x4d/0x60
+ [ 191.739112] preempt_rebind_work_func+0x76f/0xd00 [xe]
[ Fix ]
- * upstream fix :
+ * upstream fix :
6b93cb98910c drm/xe/userptr: fix EFAULT handling
[ Test Plan ]
- * Built.
+ * Compiled.
[ Where problems could occur ]
- * Regression in error handling mechanism in BMG
+ * Regression in error handling mechanism in BMG driver.
[ Other Info ]
-
- * Pointed by intel as missing.
+
+ * Pointed by intel as missing.
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https://bugs.launchpad.net/bugs/2102657
Title:
BMG: fix EFAULT handling
Status in linux package in Ubuntu:
New
Status in linux source package in Oracular:
New
Bug description:
[ Impact ]
* EFAULT is handled as a non-fatal error that can trigger more issues
due to bad handling such as
[ 191.738349] WARNING: CPU: 1 PID: 157 at
drivers/gpu/drm/xe/xe_res_cursor.h:158 xe_pt_stage_bind.constprop.0+0x60a/0x6b0
[xe]
[ 191.738551] Workqueue: xe-ordered-wq preempt_rebind_work_func [xe]
[ 191.738616] RIP: 0010:xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
[ 191.738690] Call Trace:
[ 191.738692] <TASK>
[ 191.738694] ? show_regs+0x69/0x80
[ 191.738698] ? __warn+0x93/0x1a0
[ 191.738703] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
[ 191.738759] ? report_bug+0x18f/0x1a0
[ 191.738764] ? handle_bug+0x63/0xa0
[ 191.738767] ? exc_invalid_op+0x19/0x70
[ 191.738770] ? asm_exc_invalid_op+0x1b/0x20
[ 191.738777] ? xe_pt_stage_bind.constprop.0+0x60a/0x6b0 [xe]
[ 191.738834] ? ret_from_fork_asm+0x1a/0x30
[ 191.738849] bind_op_prepare+0x105/0x7b0 [xe]
[ 191.738906] ? dma_resv_reserve_fences+0x301/0x380
[ 191.738912] xe_pt_update_ops_prepare+0x28c/0x4b0 [xe]
[ 191.738966] ? kmemleak_alloc+0x4b/0x80
[ 191.738973] ops_execute+0x188/0x9d0 [xe]
[ 191.739036] xe_vm_rebind+0x4ce/0x5a0 [xe]
[ 191.739098] ? trace_hardirqs_on+0x4d/0x60
[ 191.739112] preempt_rebind_work_func+0x76f/0xd00 [xe]
[ Fix ]
* upstream fix :
6b93cb98910c drm/xe/userptr: fix EFAULT handling
[ Test Plan ]
* Compiled.
[ Where problems could occur ]
* Regression in error handling mechanism in BMG driver.
[ Other Info ]
* Pointed by intel as missing.
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