Hi,
I've been finding that kmemleak reports that i915 is leaking gem buffers (although it takes about 20 minutes before the supposed leaks occur). The leaks normally occur in batches of 13 and seem to require chrome to be running looking at a page like google.com while a gnome-terminal is also present. It is important that the screensaver is postponed using something like watch "xdg-screensaver reset" .
A batch of the leaks are below:
unreferenced object 0xe9b1d640 (size 148): comm "Xorg", pid 1398, jiffies 4294740514 (age 4367.634s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe9b1d780 (size 148): comm "Xorg", pid 1398, jiffies 4294740514 (age 4367.634s) hex dump (first 32 bytes): 00 00 00 00 40 d6 b1 e9 00 00 00 00 00 00 00 00 ....@........... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xeb0db000 (size 148): comm "Xorg", pid 1398, jiffies 4294740514 (age 4367.634s) hex dump (first 32 bytes): 00 00 00 00 80 d7 b1 e9 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d37b40 (size 148): comm "Xorg", pid 1398, jiffies 4294740514 (age 4367.634s) hex dump (first 32 bytes): 00 00 00 00 00 b0 0d eb 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d37780 (size 148): comm "Xorg", pid 1398, jiffies 4294740514 (age 4367.654s) hex dump (first 32 bytes): 00 00 00 00 40 7b d3 e3 00 00 00 00 00 00 00 00 ....@{.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d373c0 (size 148): comm "Xorg", pid 1398, jiffies 4294740514 (age 4367.654s) hex dump (first 32 bytes): 00 00 00 00 80 77 d3 e3 00 00 00 00 00 00 00 00 .....w.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d37640 (size 148): comm "Xorg", pid 1398, jiffies 4294740515 (age 4367.653s) hex dump (first 32 bytes): 00 00 00 00 c0 73 d3 e3 00 00 00 00 00 00 00 00 .....s.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d37a00 (size 148): comm "Xorg", pid 1398, jiffies 4294740515 (age 4367.653s) hex dump (first 32 bytes): 00 00 00 00 40 76 d3 e3 00 00 00 00 00 00 00 00 ....@v.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d378c0 (size 148): comm "Xorg", pid 1398, jiffies 4294740515 (age 4367.653s) hex dump (first 32 bytes): 00 00 00 00 00 7a d3 e3 00 00 00 00 00 00 00 00 .....z.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe3d37500 (size 148): comm "Xorg", pid 1398, jiffies 4294740515 (age 4367.670s) hex dump (first 32 bytes): 00 00 00 00 c0 78 d3 e3 00 00 00 00 00 00 00 00 .....x.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe363c3c0 (size 148): comm "Xorg", pid 1398, jiffies 4294740515 (age 4367.670s) hex dump (first 32 bytes): 00 00 00 00 00 75 d3 e3 00 00 00 00 00 00 00 00 .....u.......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xe363cc80 (size 148): comm "Xorg", pid 1398, jiffies 4294740515 (age 4367.670s) hex dump (first 32 bytes): 00 00 00 00 c0 c3 63 e3 00 00 00 00 00 00 00 00 ......c......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff unreferenced object 0xdf14dc80 (size 148): comm "Xorg", pid 1398, jiffies 4294753046 (age 4355.140s) hex dump (first 32 bytes): 00 00 00 00 80 cc 63 e3 00 00 00 00 00 00 00 00 ......c......... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<b0553b87>] kmemleak_alloc+0x27/0x50 [<b0196435>] kmem_cache_alloc+0xc5/0x180 [<b026b264>] idr_pre_get+0x54/0x80 [<b030324c>] drm_gem_handle_create+0x3c/0xd0 [<b03294f9>] i915_gem_create+0x49/0xa0 [<b0329578>] i915_gem_create_ioctl+0x28/0x40 [<b0301716>] drm_ioctl+0x1d6/0x470 [<b01aa8de>] do_vfs_ioctl+0x7e/0x5a0 [<b01aae39>] sys_ioctl+0x39/0x70 [<b055ff17>] sysenter_do_call+0x12/0x36 [<ffffffff>] 0xffffffff