Messages in this thread | | | Date | Wed, 9 Mar 2016 13:37:52 +0100 | From | Pavel Machek <> | Subject | 4.5-rc4: pool: segfault, systemd-udevd blocked for more than 120 seconds |
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Hi!
I realized ttyUSB0 is no longer detected, then I found this in the logs:
[25428.048405] r8169 0000:03:00.0 eth0: link up [27996.669945] sd 4:0:0:0: [sdc] 7744512 512-byte logical blocks: (3.97 GB/3.69 GiB) [27996.686679] sdc: sdc1 sdc2 sdc3 sdc4 [27997.850843] pool[3086]: segfault at 0 ip 000000000807ab34 sp 00000000f42fbbf0 error 4 in udisksd[8048000+62000] [29280.148056] INFO: task systemd-udevd:2094 blocked for more than 120 seconds. [29280.148061] Not tainted 4.5.0-rc4 #37 [29280.148063] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [29280.148065] systemd-udevd D ffff8800b7d0fb30 0 2094 1 0x20020000 [29280.148071] ffff8800b7d0fb30 ffff880000000001 0000000000000000 ffff8800b891c1c0 [29280.148077] ffff8800b891c960 0000000000000292 ffff8800b7d10000 ffff8800b5fe8b20 [29280.148081] ffff8800b891c1c0 00000000ffffffff 0000000000000246 ffff8800b7d0fb48 [29280.148086] Call Trace: [29280.148095] [<ffffffff8494e050>] schedule+0x30/0x80 [29280.148099] [<ffffffff8494e319>] schedule_preempt_disabled+0x9/0x10 [29280.148102] [<ffffffff8494fac5>] mutex_lock_nested+0x105/0x2e0 [29280.148106] [<ffffffff8414f9f1>] ? __blkdev_get+0x41/0x3f0 [29280.148110] [<ffffffff842d90af>] ? disk_block_events+0x5f/0x80 [29280.148113] [<ffffffff8414f9f1>] __blkdev_get+0x41/0x3f0 [29280.148116] [<ffffffff8414fddc>] blkdev_get+0x3c/0x390 [29280.148119] [<ffffffff84951f62>] ? _raw_spin_unlock+0x22/0x30 [29280.148122] [<ffffffff84150180>] ? blkdev_get_by_dev+0x50/0x50 [29280.148125] [<ffffffff841501d6>] blkdev_open+0x56/0x70 [29280.148129] [<ffffffff8411abf9>] do_dentry_open.isra.16+0x149/0x2d0 [29280.148132] [<ffffffff8411b9dd>] vfs_open+0x4d/0x50 [29280.148135] [<ffffffff8412a81a>] path_openat+0x47a/0xf80 [29280.148139] [<ffffffff8412c199>] do_filp_open+0x79/0xd0 [29280.148143] [<ffffffff84138b57>] ? __alloc_fd+0xb7/0x170 [29280.148146] [<ffffffff84951f62>] ? _raw_spin_unlock+0x22/0x30 [29280.148148] [<ffffffff84138b57>] ? __alloc_fd+0xb7/0x170 [29280.148151] [<ffffffff8411bd05>] do_sys_open+0x115/0x1e0 [29280.148155] [<ffffffff841655d6>] compat_SyS_open+0x16/0x20 [29280.148159] [<ffffffff8400241e>] do_syscall_32_irqs_off+0x4e/0xa0 [29280.148163] [<ffffffff8495413a>] entry_INT80_compat+0x2a/0x40 [29280.148166] 1 lock held by systemd-udevd/2094: [29280.148167] #0: (&bdev->bd_mutex){......}, at: [<ffffffff8414f9f1>] __blkdev_get+0x41/0x3f0 [29322.817302] sdc: sdc1 sdc2 sdc3 sdc4 [39510.918856] liferea[12340]: segfault at c ip 00000000080862ad sp 00000000fff5acd8 error 4 in liferea[8048000+89000] [43259.795891] nf_conntrack: automatic helper assignment is deprecated and it will be removed soon. Use the iptables CT target to attach helpers instead. [49435.300297] PM: Syncing filesystems ... done. [49435.403970] PM: Preparing system for sleep (mem) [49435.404385] Freezing user space processes ... (elapsed 0.039 seconds) done. [49435.444222] Freezing remaining freezable tasks ... (elapsed 0.004 seconds) done.
I'll try to update to newer -rc, and see if it happens again, but if you have some other hints, let me know.
Best regards, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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