Application freeze with kernel "BUG:" and stall logs

[masaruueki]

Dear All,

I use i.mx6solo with kernel 3.10.53.

My QML(Qt5.4.3) application (with playing movie) sometime freeze with kernel "BUG:" and stall logs.

Can anyone offer any suggestions on how to avoid this issue.

dmesg log:

------------[ cut here ]------------

WARNING: at mm/page_alloc.c:6047 dma_release_from_contiguous+0x98/0xc4()

338 pages are still in use!

Modules linked in: ov5640_camera_mipi

CPU: 0 PID: 606 Comm: myapp Not tainted 3.10.53-1.1.1 #1

[<80015700>] (unwind_backtrace+0x0/0xec) from [<80011b74>] (show_stack+0x10/0x14)

[<80011b74>] (show_stack+0x10/0x14) from [<8002de28>] (warn_slowpath_common+0x54/0x6c)

[<8002de28>] (warn_slowpath_common+0x54/0x6c) from [<8002de70>] (warn_slowpath_fmt+0x30/0x40)

[<8002de70>] (warn_slowpath_fmt+0x30/0x40) from [<8030e9a4>] (dma_release_from_contiguous+0x98/0xc4)

[<8030e9a4>] (dma_release_from_contiguous+0x98/0xc4) from [<804a6c80>] (vpu_free_dma_buffer+0x44/0x4c)

[<804a6c80>] (vpu_free_dma_buffer+0x44/0x4c) from [<804a731c>] (vpu_ioctl+0x4e8/0x920)

[<804a731c>] (vpu_ioctl+0x4e8/0x920) from [<800df824>] (do_vfs_ioctl+0x3ec/0x5ac)

[<800df824>] (do_vfs_ioctl+0x3ec/0x5ac) from [<800dfa1c>] (SyS_ioctl+0x38/0x60)

[<800dfa1c>] (SyS_ioctl+0x38/0x60) from [<8000e080>] (ret_fast_syscall+0x0/0x30)

---[ end trace b4f567490c02222d ]---

BUG: Bad page state in process myapp  pfn:26a40

page:80c50800 count:0 mapcount:0 mapping:8206d87c index:0xc

page flags: 0x8020c(referenced|uptodate|arch_1|swapbacked)

Modules linked in: ov5640_camera_mipi

CPU: 0 PID: 606 Comm: myapp Tainted: G        W    3.10.53-1.1.1 #1

[<80015700>] (unwind_backtrace+0x0/0xec) from [<80011b74>] (show_stack+0x10/0x14)

[<80011b74>] (show_stack+0x10/0x14) from [<8009d7a8>] (bad_page+0xc0/0x110)

[<8009d7a8>] (bad_page+0xc0/0x110) from [<8009d8a4>] (free_pages_prepare+0xac/0x104)

[<8009d8a4>] (free_pages_prepare+0xac/0x104) from [<8009f2d8>] (free_hot_cold_page+0x18/0x150)

[<8009f2d8>] (free_hot_cold_page+0x18/0x150) from [<8009fb70>] (free_hot_cold_page_list+0x2c/0x48)

[<8009fb70>] (free_hot_cold_page_list+0x2c/0x48) from [<800a3164>] (release_pages+0x1cc/0x1d4)

[<800a3164>] (release_pages+0x1cc/0x1d4) from [<800c58d8>] (free_pages_and_swap_cache+0x70/0xa4)

[<800c58d8>] (free_pages_and_swap_cache+0x70/0xa4) from [<800b9684>] (unmap_region+0x108/0x178)

[<800b9684>] (unmap_region+0x108/0x178) from [<800bb1f4>] (do_munmap+0x23c/0x41c)

[<800bb1f4>] (do_munmap+0x23c/0x41c) from [<8022a430>] (SyS_shmdt+0xa0/0x158)

[<8022a430>] (SyS_shmdt+0xa0/0x158) from [<8000e080>] (ret_fast_syscall+0x0/0x30)

Disabling lock debugging due to kernel taint

BUG: Bad page state in process myapp  pfn:26a36

page:80c506c0 count:0 mapcount:0 mapping:8206d87c index:0xb

page flags: 0x8020c(referenced|uptodate|arch_1|swapbacked)

Modules linked in: ov5640_camera_mipi

CPU: 0 PID: 606 Comm: myapp Tainted: G

B   W

3.10.53-1.1.1 #1

[<80015700>] (unwind_backtrace+0x0/0xec) from [<80011b74>] (show_stack+0x10/0x14)

[<80011b74>] (show_stack+0x10/0x14) from [<8009d7a8>] (bad_page+0xc0/0x110)

[<8009d7a8>] (bad_page+0xc0/0x110) from [<8009d8a4>] (free_pages_prepare+0xac/0x104)

[<8009d8a4>] (free_pages_prepare+0xac/0x104) from [<8009f2d8>] (free_hot_cold_page+0x18/0x150)

[<8009f2d8>] (free_hot_cold_page+0x18/0x150) from [<8009fb70>] (free_hot_cold_page_list+0x2c/0x48)

[<8009fb70>] (free_hot_cold_page_list+0x2c/0x48) from [<800a3164>] (release_pages+0x1cc/0x1d4)

[<800a3164>] (release_pages+0x1cc/0x1d4) from [<800c58d8>] (free_pages_and_swap_cache+0x70/0xa4)

[<800c58d8>] (free_pages_and_swap_cache+0x70/0xa4) from [<800b9684>] (unmap_region+0x108/0x178)

[<800b9684>] (unmap_region+0x108/0x178) from [<800bb1f4>] (do_munmap+0x23c/0x41c)

[<800bb1f4>] (do_munmap+0x23c/0x41c) from [<8022a430>] (SyS_shmdt+0xa0/0x158)

[<8022a430>] (SyS_shmdt+0xa0/0x158) from [<8000e080>] (ret_fast_syscall+0x0/0x30)

BUG: Bad page state in process myapp  pfn:26a3e

page:80c507c0 count:0 mapcount:0 mapping:8206d87c index:0xf

page flags: 0x8020c(referenced|uptodate|arch_1|swapbacked)

Modules linked in: ov5640_camera_mipi

CPU: 0 PID: 606 Comm: myapp Tainted: G

B   W

3.10.53-1.1.1 #1

[<80015700>] (unwind_backtrace+0x0/0xec) from [<80011b74>] (show_stack+0x10/0x14)

[<80011b74>] (show_stack+0x10/0x14) from [<8009d7a8>] (bad_page+0xc0/0x110)

[<8009d7a8>] (bad_page+0xc0/0x110) from [<8009d8a4>] (free_pages_prepare+0xac/0x104)

[<8009d8a4>] (free_pages_prepare+0xac/0x104) from [<8009f2d8>] (free_hot_cold_page+0x18/0x150)

[<8009f2d8>] (free_hot_cold_page+0x18/0x150) from [<8009fb70>] (free_hot_cold_page_list+0x2c/0x48)

[<8009fb70>] (free_hot_cold_page_list+0x2c/0x48) from [<800a3164>] (release_pages+0x1cc/0x1d4)

[<800a3164>] (release_pages+0x1cc/0x1d4) from [<800c58d8>] (free_pages_and_swap_cache+0x70/0xa4)

[<800c58d8>] (free_pages_and_swap_cache+0x70/0xa4) from [<800b9684>] (unmap_region+0x108/0x178)

[<800b9684>] (unmap_region+0x108/0x178) from [<800bb1f4>] (do_munmap+0x23c/0x41c)

[<800bb1f4>] (do_munmap+0x23c/0x41c) from [<8022a430>] (SyS_shmdt+0xa0/0x158)

[<8022a430>] (SyS_shmdt+0xa0/0x158) from [<8000e080>] (ret_fast_syscall+0x0/0x30)

INFO: rcu_preempt detected stalls on CPUs/tasks: {} (detected by 0, t=2102 jiffies, g=329503, c=329502, q=53)

INFO: Stall ended before state dump start

(following many stall log)

Regards,

Masaru

[igorpadykov]

Hi Masaru

one can try run ddr test and update image with new ddr calibration coefficients

i.MX6/7 DDR Stress Test Tool V2.40

also recommended to build with new gpu driver, included in recent 3.14.52 release

Board Support Packages (29)

L3.14.52_1.1.0_MX6QDLSOLO (REV L3.14.52_1.1.0)

http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/i.mx-applications-process...

Best regards

igor

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