https://bugzilla.kernel.org/show_bug.cgi?id=71791 Bug ID: 71791 Summary: Unlinking a file that was moved to another folder but still open by other process blocks either process (not always reproducible) Product: File System Version: 2.5 Kernel Version: 3.12.9 Hardware: All OS: Linux Tree: PREEMPT_RT Status: NEW Severity: normal Priority: P1 Component: ext4 Assignee: fs_ext4@xxxxxxxxxxxxxxxxxxxx Reporter: edpeur@xxxxxxxxx Regression: No Either the rm process or more rarely the process that has the file open will block when a file that was moved to other folder is unlinked while still open by other process. This is not always reproducible, but like 20% reproducible. Here is the most common trace: [27600.716129] INFO: task rm:28925 blocked for more than 120 seconds. [27600.716139] Tainted: G W 3.12-1-rt-amd64 #1 [27600.716142] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [27600.716147] rm D ffff88007eb8a5f0 0 28925 28924 0x00000004 [27600.716159] ffff88007eb8a280 0000000000000086 ffff88004542bfd8 ffff88004542bfd8 [27600.716162] ffff88004542bfd8 ffff88004542bfd8 ffff88007eb8a280 ffff88007eb8a280 [27600.716165] 0000000000000002 ffffffff81123410 ffff88004542bd50 ffff88004542bdb8 [27600.716172] Call Trace: [27600.716185] [<ffffffff81123410>] ? wait_on_page_read+0x60/0x60 [27600.716190] [<ffffffff814aecb1>] ? schedule+0x21/0x90 [27600.716194] [<ffffffff814aeda3>] ? io_schedule+0x83/0xd0 [27600.716197] [<ffffffff81123415>] ? sleep_on_page+0x5/0x10 [27600.716201] [<ffffffff814ad594>] ? __wait_on_bit+0x54/0x80 [27600.716204] [<ffffffff8112322f>] ? wait_on_page_bit+0x7f/0x90 [27600.716209] [<ffffffff81082050>] ? wake_atomic_t_function+0x30/0x30 [27600.716213] [<ffffffff81130795>] ? pagevec_lookup+0x15/0x20 [27600.716217] [<ffffffff8113284b>] ? truncate_inode_pages_range+0x26b/0x490 [27600.716265] [<ffffffffa02f944d>] ? ext4_evict_inode+0x13d/0x540 [ext4] [27600.716270] [<ffffffff8119e055>] ? evict+0xb5/0x1b0 [27600.716279] [<ffffffff8119180b>] ? do_unlinkat+0x19b/0x250 [27600.716282] [<ffffffff81090140>] ? migrate_enable+0xa0/0x1e0 [27600.716286] [<ffffffff811c3795>] ? fsnotify_find_inode_mark+0x65/0x90 [27600.716288] [<ffffffff811c4d64>] ? dnotify_flush+0x34/0x110 [27600.716291] [<ffffffff814b7ab9>] ? system_call_fastpath+0x16/0x1b And this trace has only happened once: [49440.736350] INFO: task mplayer:30035 blocked for more than 120 seconds. [49440.736360] Tainted: G W 3.12-1-rt-amd64 #1 [49440.736362] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [49440.736365] mplayer D ffff88001d4dd9b0 0 30035 23580 0x00000000 [49440.736375] ffff88001d4dd640 0000000000000086 ffff88003e31bfd8 ffff88003e31bfd8 [49440.736377] ffff88003e31bfd8 ffff88003e31bfd8 ffff88001d4dd640 ffff88001d4dd640 [49440.736379] 0000000000000002 ffffffff81123410 ffff88003e31bd40 ffff88003e31bda0 [49440.736383] Call Trace: [49440.736396] [<ffffffff81123410>] ? wait_on_page_read+0x60/0x60 [49440.736400] [<ffffffff814aecb1>] ? schedule+0x21/0x90 [49440.736403] [<ffffffff814aeda3>] ? io_schedule+0x83/0xd0 [49440.736405] [<ffffffff81123415>] ? sleep_on_page+0x5/0x10 [49440.736407] [<ffffffff814ad594>] ? __wait_on_bit+0x54/0x80 [49440.736409] [<ffffffff8112322f>] ? wait_on_page_bit+0x7f/0x90 [49440.736412] [<ffffffff81082050>] ? wake_atomic_t_function+0x30/0x30 [49440.736416] [<ffffffff81130795>] ? pagevec_lookup+0x15/0x20 [49440.736419] [<ffffffff8113284b>] ? truncate_inode_pages_range+0x26b/0x490 [49440.736491] [<ffffffffa031944d>] ? ext4_evict_inode+0x13d/0x540 [ext4] [49440.736495] [<ffffffff8119e055>] ? evict+0xb5/0x1b0 [49440.736497] [<ffffffff8119a2b8>] ? dentry_kill+0x218/0x270 [49440.736499] [<ffffffff8119a374>] ? dput+0x64/0x110 [49440.736502] [<ffffffff811857fb>] ? __fput+0x13b/0x200 [49440.736505] [<ffffffff8107e077>] ? task_work_run+0x97/0xd0 [49440.736510] [<ffffffff810149e1>] ? do_notify_resume+0x81/0xe0 [49440.736513] [<ffffffff814b7d76>] ? int_signal+0x12/0x17 This is the kernel used: http://ftp.debian.org/debian/pool/main/l/linux/linux-image-3.12-1-rt-amd64_3.12.9-1_amd64.deb -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
