kernel 3.4.0 (i686): pagevec_lookup_tag+0x21/0x30

From: Justin Piszcz
Date: Fri Sep 14 2012 - 09:01:20 EST


Hi,

Was curious why this occurs with postfix's cleanup every so often?

[562320.275125] INFO: task cleanup:5921 blocked for more than 120 seconds.
[562320.275127] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[562320.275129] cleanup D 0000000d 0 5921 2437 0x00000000
[562320.275132] f2986080 00000086 ca379ed4 0000000d 00000001 c16ca000
c1078521 0000000e
[562320.275137] ca379edc ffffffff c106f3c6 00000001 0000000e 00000001
ce0a965c 00000000
[562320.275141] f5a84070 00000003 00000001 f5a8406c 00000292 00000000
f5a84014 c1043c5e
[562320.275146] Call Trace:
[562320.275148] [<c1078521>] ? pagevec_lookup_tag+0x21/0x30
[562320.275151] [<c106f3c6>] ? filemap_fdatawait_range+0x86/0x140
[562320.275154] [<c1043c5e>] ? __wake_up+0x3e/0x60
[562320.275156] [<c103cead>] ? prepare_to_wait+0x1d/0x70
[562320.275159] [<c113b6e5>] ? jbd2_log_wait_commit+0x95/0x100
[562320.275162] [<c103d080>] ? abort_exclusive_wait+0x90/0x90
[562320.275164] [<c11033cc>] ? ext4_sync_file+0x13c/0x2c0
[562320.275167] [<c1097574>] ? chmod_common+0x74/0x90
[562320.275169] [<c1099706>] ? vfs_write+0x106/0x140
[562320.275172] [<c1103290>] ? ext4_flush_completed_IO+0x90/0x90
[562320.275175] [<c10bae6b>] ? vfs_fsync+0x2b/0x40
[562320.275177] [<c10bb190>] ? sys_fsync+0x20/0x40
[562320.275180] [<c14de410>] ? sysenter_do_call+0x12/0x26

Justin.

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