ZRAM: scheduling while atomic 3.10.62
From: Yingchun Li
Date: Tue Jan 06 2015 - 03:05:06 EST
I encountered a BUG when use zram on my board, following is the message:
[ 120.351196] BUG: scheduling while atomic: Binder_3/230/0x00000003
[ 120.351806] Modules linked in: rdawfmac rda_cam_sensor(O) rda_ls(O)
rda_gs(O) rda_ts(O) voc(O) vpu(O) galcore(O) rda_headset(O)
[ 120.353210] CPU: 0 PID: 230 Comm: Binder_3 Tainted: G W O
3.10.62-01224-gcfffb36 #1
[ 120.354248] [<c001047d>] (unwind_backtrace+0x1/0x98) from
[<c000ee93>] (show_stack+0xb/0xc)
[ 120.355285] [<c000ee93>] (show_stack+0xb/0xc) from [<c036c275>]
(__schedule_bug+0x31/0x48)
[ 120.356323] [<c036c275>] (__schedule_bug+0x31/0x48) from
[<c036f9c9>] (__schedule+0x275/0x2c8)
[ 120.357360] [<c036f9c9>] (__schedule+0x275/0x2c8) from [<c037044d>]
(__down_write_nested+0x51/0xa4)
[ 120.358459] [<c037044d>] (__down_write_nested+0x51/0xa4) from
[<c025ed2f>] (zram_slot_free_notify+0x13/0x2c)
[ 120.359680] [<c025ed2f>] (zram_slot_free_notify+0x13/0x2c) from
[<c007a06d>] (swap_entry_free+0xd9/0x124)
[ 120.360900] [<c007a06d>] (swap_entry_free+0xd9/0x124) from
[<c007ac5f>] (free_swap_and_cache+0x1f/0xc8)
[ 120.362060] [<c007ac5f>] (free_swap_and_cache+0x1f/0xc8) from
[<c006ebe9>] (unmap_single_vma+0x1fd/0x45c)
[ 120.363220] [<c006ebe9>] (unmap_single_vma+0x1fd/0x45c) from
[<c006f4e3>] (unmap_vmas+0x33/0x40)
[ 120.364318] [<c006f4e3>] (unmap_vmas+0x33/0x40) from [<c00716c7>]
(unmap_region+0x73/0xfc)
[ 120.365356] [<c00716c7>] (unmap_region+0x73/0xfc) from [<c00728e7>]
(do_munmap+0x177/0x244)
[ 120.366394] [<c00728e7>] (do_munmap+0x177/0x244) from [<c00729df>]
(vm_munmap+0x2b/0x38)
[ 120.367370] [<c00729df>] (vm_munmap+0x2b/0x38) from [<c000cc41>]
(ret_fast_syscall+0x1/0x46)
And I notice there is a similar post here:
https://lkml.org/lkml/2013/8/17/27
And it has been fixed by mainline(by Commit a0c516cbfc74),and there is some
other patches to optimize the patch(Commit f614a9f48ded).
I just want to know is there any plan to back port the patchs to 3.10.y?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/