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7e5f3d3086
In function dispatch_workload(), if it fail before calling intel_gvt_scan_and_shadow_wa_ctx(), the indirect ctx will not be shadowed so no cleaup need. wa_ctx->indirect_ctx.obj indicate whether indirect_ctx is shadowed. The obj is null if it is unshadowed. BUG: unable to handle kernel NULL pointer dereference at 00000000000001a0 IP: complete_execlist_workload+0x2c9/0x3e0 [i915] Oops: 0002 [#1] SMP task: ffff939546d2d880 task.stack: ffffbd9b82ac4000 RIP: 0010:complete_execlist_workload+0x2c9/0x3e0 [i915] RSP: 0018:ffffbd9b82ac7dd8 EFLAGS: 00010202 RAX: 0000000000000000 RBX: ffff9393c725b540 RCX: 0000000000000006 RDX: 0000000000000007 RSI: 0000000000000202 RDI: ffff939559c8dd00 RBP: ffffbd9b82ac7e18 R08: 0000000000000001 R09: 000000000120dd8f R10: 0000000000000000 R11: 000000000120dd8f R12: ffff9393c725b540 R13: ffff9393c725b618 R14: ffffbd9b81f0d000 R15: ffff939520e0e000 FS: 0000000000000000(0000) GS:ffff939559c80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000001a0 CR3: 000000043d664000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: workload_thread+0x312/0xd70 [i915] ? __wake_up_sync+0x20/0x20 ? wake_atomic_t_function+0x60/0x60 kthread+0x101/0x140 Signed-off-by: Changbin Du <changbin.du@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.