From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 76261] ext4_da_writepages err -30 after remount ro during
shutdown
Date: Wed, 03 Aug 2016 02:10:02 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=76261
yongjun xiao changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |yongjun.xiao@spreadtrum.com
--- Comment #15 from yongjun xiao ---
Hi all,
I meet the same bug with kernel3.10.65 as the following:
>[26287.698059] c1 EXT4-fs (mmcblk0p24): ext4_da_writepages: jbd2_start: 2048 pages, ino 59319; err -30
[26287.698089] c1 EXT4-fs (mmcblk0p24): ext4_da_writepages: jbd2_start: 2048
pages, ino 59319; err -30
[26287.698089] c1 EXT4-fs (mmcblk0p24): ext4_da_writepages: jbd2_start: 2048
pages, ino 59319; err -30
[26287.698120] c1 EXT4-fs (mmcblk0p24): ext4_da_writepages: jbd2_start: 2048
pages, ino 59319; err -30
[26287.510345] c1 EXT4-fs (mmcblk0p24): ext4_da_writepages: jbd2_start: 1024
pages, ino 59319; err -30
......
And at last caused kernel crash.
you can see many threads blocked:
crash> ps | grep UN
1 0 0 dc054000 UN 0.1 1168 508 init
25 2 3 dc08b300 UN 0.0 0 0 [kworker/3:0]
88 2 0 dc9e1980 UN 0.0 0 0 [sprd_tb_thread]
89 2 2 dc9e1dc0 UN 0.0 0 0 [sprd_hotplug]
194 1 0 dd2c1100 UN 0.2 2208 840 perfprofd
210 1 0 dd2c3300 UN 0.0 376 84 batterysrv
300 1 0 dd60f740 UN 0.2 6876 1160 collect_apr
1465 256 2 d803c000 UN 14.9 820188 78000 system_server
1478 256 3 d825e640 UN 14.9 820188 78000 android.bg
1479 256 3 d803d980 UN 14.9 820188 78000 ActivityManager
1489 256 1 dd293b80 UN 14.9 820188 78000 CpuTracker
1532 256 0 dd67b300 UN 14.9 820188 78000 InputReader
1552 256 1 d8031980 UN 14.9 820188 78000 UEventObserver
1615 256 2 d8046ec0 UN 9.6 598176 50240 ndroid.systemui
2034 256 2 d9713b80 UN 3.7 529732 19416 .android.dialer
2145 256 0 d9100880 UN 14.9 820188 78000 watchdog
2592 256 3 d7a10440 UN 14.9 820188 78000 Thread-164
2616 256 2 d97b9100 UN 14.9 820188 78000 Error dump: sys
2638 1 0 d61b8440 UN 0.4 243412 2116 ylog
crash>
crash> bt 1
PID: 1 TASK: dc054000 CPU: 0 COMMAND: "init"
#0 [] (__schedule) from []
#1 [] (schedule_timeout) from []
#2 [] (__down) from []
#3 [] (down) from []
#4 [] (_mmc_blk_suspend) from []
#5 [] (mmc_bus_shutdown) from []
#6 [] (device_shutdown) from []
#7 [] (kernel_restart) from []
#8 [] (sys_reboot) from []
pc : [<0005c4c0>] lr : [<00016071>] psr: 200e0010
sp : be8f79b8 ip : be8f79c8 fp : 0007c657
r10: 0007adb9 r9 : 0007beb8 r8 : 0007c64a
r7 : 00000058 r6 : 00000000 r5 : 00000000 r4 : 00000000
r3 : be8f7a07 r2 : a1b2c3d4 r1 : 28121969 r0 : fee1dead
Flags: nzCv IRQs on FIQs on Mode USER_32 ISA ARM
crash>
>when reboot,init thread was blocked.
crash> bt 25
PID: 25 TASK: dc08b300 CPU: 3 COMMAND: "kworker/3:0"
#0 [] (__schedule) from []
#1 [] (io_schedule) from []
#2 [] (sleep_on_buffer) from []
#3 [] (__wait_on_bit) from []
#4 [] (out_of_line_wait_on_bit) from []
#5 [] (__sync_dirty_buffer) from []
#6 [] (ext4_commit_super) from []
#7 [] (ext4_mark_recovery_complete) from []
#8 [] (ext4_remount) from []
#9 [] (do_remount_sb) from []
#10 [] (do_emergency_remount) from []
#11 [] (process_one_work) from []
#12 [] (worker_thread) from []
#13 [] (kthread) from []
crash>
Is this bug fixed?
Thanks!
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