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| Filename | Latest commit message | Latest commit date |
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df91fe834b
[ Upstream commit 3cbdc8d8b7f39a7af3ea7b8dfa75caaebfda4e56 ] Adding an msm_gem_object object to the inactive_list before completing its initialization is a bad idea because shrinker may pick it up from the inactive_list. Fix this by making sure that the initialization is complete before moving the msm_obj object to the inactive list. This patch fixes the below error: [10027.553044] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000068 [10027.573305] Mem abort info: [10027.590160] ESR = 0x96000006 [10027.597905] EC = 0x25: DABT (current EL), IL = 32 bits [10027.614430] SET = 0, FnV = 0 [10027.624427] EA = 0, S1PTW = 0 [10027.632722] Data abort info: [10027.638039] ISV = 0, ISS = 0x00000006 [10027.647459] CM = 0, WnR = 0 [10027.654345] user pgtable: 4k pages, 39-bit VAs, pgdp=00000001e3a6a000 [10027.672681] [0000000000000068] pgd=0000000198c31003, pud=0000000198c31003, pmd=0000000000000000 [10027.693900] Internal error: Oops: 96000006 [#1] PREEMPT SMP [10027.738261] CPU: 3 PID: 214 Comm: kswapd0 Tainted: G S 5.4.40 #1 [10027.745766] Hardware name: Qualcomm Technologies, Inc. SC7180 IDP (DT) [10027.752472] pstate: 80c00009 (Nzcv daif +PAN +UAO) [10027.757409] pc : mutex_is_locked+0x14/0x2c [10027.761626] lr : msm_gem_shrinker_count+0x70/0xec [10027.766454] sp : ffffffc011323ad0 [10027.769867] x29: ffffffc011323ad0 x28: ffffffe677e4b878 [10027.775324] x27: 0000000000000cc0 x26: 0000000000000000 [10027.780783] x25: ffffff817114a708 x24: 0000000000000008 [10027.786242] x23: ffffff8023ab7170 x22: 0000000000000001 [10027.791701] x21: ffffff817114a080 x20: 0000000000000119 [10027.797160] x19: 0000000000000068 x18: 00000000000003bc [10027.802621] x17: 0000000004a34210 x16: 00000000000000c0 [10027.808083] x15: 0000000000000000 x14: 0000000000000000 [10027.813542] x13: ffffffe677e0a3c0 x12: 0000000000000000 [10027.819000] x11: 0000000000000000 x10: ffffff8174b94340 [10027.824461] x9 : 0000000000000000 x8 : 0000000000000000 [10027.829919] x7 : 00000000000001fc x6 : ffffffc011323c88 [10027.835373] x5 : 0000000000000001 x4 : ffffffc011323d80 [10027.840832] x3 : ffffffff0477b348 x2 : 0000000000000000 [10027.846290] x1 : ffffffc011323b68 x0 : 0000000000000068 [10027.851748] Call trace: [10027.854264] mutex_is_locked+0x14/0x2c [10027.858121] msm_gem_shrinker_count+0x70/0xec [10027.862603] shrink_slab+0xc0/0x4b4 [10027.866187] shrink_node+0x4a8/0x818 [10027.869860] kswapd+0x624/0x890 [10027.873097] kthread+0x11c/0x12c [10027.876424] ret_from_fork+0x10/0x18 [10027.880102] Code: f9000bf3 910003fd aa0003f3 d503201f (f9400268) [10027.886362] ---[ end trace df5849a1a3543251 ]--- [10027.891518] Kernel panic - not syncing: Fatal exception Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org> Signed-off-by: Rob Clark <robdclark@chromium.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
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.