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Message-ID: <05424a5351a847786377a548dba0759917d8046c.camel@linux.intel.com>
Date: Tue, 20 Dec 2022 07:22:36 -0800
From: srinivas pandruvada <srinivas.pandruvada@...ux.intel.com>
To: Mirsad Todorovac <mirsad.todorovac@....unizg.hr>,
LKML <linux-kernel@...r.kernel.org>, jani.nikula@...ux.intel.com,
joonas.lahtinen@...ux.intel.com,
Rodrigo Vivi <rodrigo.vivi@...el.com>,
tvrtko.ursulin@...ux.intel.com
Cc: Thorsten Leemhuis <regressions@...mhuis.info>,
intel-gfx@...ts.freedesktop.org
Subject: Re: Possible regression in drm/i915 driver: memleak
+Added DRM mailing list and maintainers
On Tue, 2022-12-20 at 15:33 +0100, Mirsad Todorovac wrote:
> Hi all,
>
> I have been unsuccessful to find any particular Intel i915 maintainer
> emails, so my best bet is to post here, as you will must assuredly
> already know them.
>
> The problem is a kernel memory leak that is repeatedly occurring
> triggered during the execution of Chrome browser under the latest
> 6.1.0+
> kernel of this morning and Almalinux 8.6 on a Lenovo desktop box
> with Intel(R) Core(TM) i5-8400 CPU @ 2.80GHz CPU.
>
> The build is with KMEMLEAK, KASAN and MGLRU turned on during the
> build,
> on a vanilla mainline kernel from Mr. Torvalds' tree.
>
> The leaks look like this one:
>
> unreferenced object 0xffff888131754880 (size 64):
> comm "chrome", pid 13058, jiffies 4298568878 (age 3708.084s)
> hex dump (first 32 bytes):
> 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> ................
> 00 00 00 00 00 00 00 00 00 80 1e 3e 83 88 ff ff
> ...........>....
> backtrace:
> [<ffffffff9e9b5542>] slab_post_alloc_hook+0xb2/0x340
> [<ffffffff9e9bbf5f>] __kmem_cache_alloc_node+0x1bf/0x2c0
> [<ffffffff9e8f767a>] kmalloc_trace+0x2a/0xb0
> [<ffffffffc08dfde5>] drm_vma_node_allow+0x45/0x150 [drm]
> [<ffffffffc0b33315>] __assign_mmap_offset_handle+0x615/0x820
> [i915]
> [<ffffffffc0b34057>] i915_gem_mmap_offset_ioctl+0x77/0x110
> [i915]
> [<ffffffffc08bc5e1>] drm_ioctl_kernel+0x181/0x280 [drm]
> [<ffffffffc08bc9cd>] drm_ioctl+0x2dd/0x6a0 [drm]
> [<ffffffff9ea54744>] __x64_sys_ioctl+0xc4/0x100
> [<ffffffff9fbc0178>] do_syscall_64+0x58/0x80
> [<ffffffff9fc000aa>] entry_SYSCALL_64_after_hwframe+0x72/0xdc
>
> The complete list of leaks in attachment, but they seem similar or
> the same.
>
> Please find attached lshw and kernel build config file.
>
> I will probably check the same parms on my laptop at home, which is
> also
> Lenovo, but a different hw config and Ubuntu 22.10.
>
> Thanks,
> Mirsad
>
> --
> Mirsad Goran Todorovac
> Sistem inženjer
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