Messages in this thread | | | Date | Tue, 14 Feb 2006 14:24:28 -0500 (EST) | From | "Ian E. Morgan" <> | Subject | Process D-stated in generic_unplug_device |
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After a recent kernel upgrade (essentially 2.6.15.4 + a selection of other patches from -git and -mm), we've had problems with proftpd getting stuck in D-state when being shut down. There is no hot-pluging involved here (so I'm confused about the call to generic_unplug_device).
# /cat/proc/6012/wchan sync_page
A task dump shows:
Feb 14 13:45:12 guru kernel: proftpd D 00000005 0 6012 1 29519 9328 (NOTLB) Feb 14 13:45:12 guru kernel: da507c50 dd83b520 c03db380 00000005 c152a580 dfc74284 c15a8fc c01e84c2 Feb 14 13:45:12 guru kernel: c15af8fc da506000 c01e84f4 c15af8fc 00004a32 9ae11a4 0000cd50 dd83b520 Feb 14 13:45:12 guru kernel: dd83b648 da507ca8 da507cb0 c1400e20 da507c58 c03041b 00000000 c013bd28 Feb 14 13:45:12 guru kernel: Call Trace: Feb 14 13:45:12 guru kernel: [<c01e84c2>] __generic_unplug_device+0x1a/0x30 Feb 14 13:45:13 guru kernel: [<c01e84f4>] generic_unplug_device+0x1c/0x36 Feb 14 13:45:13 guru kernel: [<c030419b>] io_schedule+0xe/0x16 Feb 14 13:45:13 guru kernel: [<c013bd28>] sync_page+0x3e/0x4b Feb 14 13:45:13 guru kernel: [<c0304450>] __wait_on_bit_lock+0x41/0x61 Feb 14 13:45:13 guru kernel: [<c013bcea>] sync_page+0x0/0x4b Feb 14 13:45:13 guru kernel: [<c013c530>] __lock_page+0x91/0x99 Feb 14 13:45:13 guru kernel: [<c012ee49>] wake_bit_function+0x0/0x34 Feb 14 13:45:13 guru kernel: [<c012ee49>] wake_bit_function+0x0/0x34 Feb 14 13:45:13 guru kernel: [<c013d765>] filemap_nopage+0x29a/0x377 Feb 14 13:45:13 guru kernel: [<c014c467>] do_no_page+0x65/0x243 Feb 14 13:45:13 guru kernel: [<c014c8ee>] __handle_mm_fault+0x229/0x24d Feb 14 13:45:13 guru kernel: [<c01128ee>] do_page_fault+0x1c2/0x5a5 Feb 14 13:45:13 guru kernel: [<c01f8d1e>] __copy_from_user_ll+0x40/0x6c Feb 14 13:45:13 guru kernel: [<c010371c>] apic_timer_interrupt+0x1c/0x24 Feb 14 13:45:13 guru kernel: [<c011272c>] do_page_fault+0x0/0x5a5 Feb 14 13:45:13 guru kernel: [<c01037e7>] error_code+0x4f/0x54 Feb 14 13:45:13 guru kernel: [<c01a83bb>] reiserfs_copy_from_user_to_file_region+0x4d/xd8 Feb 14 13:45:13 guru kernel: [<c01a975e>] reiserfs_file_write+0x419/0x6ac Feb 14 13:45:13 guru kernel: [<c01d0efa>] inode_has_perm+0x49/0x6b Feb 14 13:45:13 guru kernel: [<c01f595a>] prio_tree_insert+0xf3/0x187 Feb 14 13:45:13 guru kernel: [<c01d3131>] selinux_file_permission+0x113/0x159 Feb 14 13:45:13 guru kernel: [<c015abbb>] vfs_write+0xcc/0x18f Feb 14 13:45:13 guru kernel: [<c015ad3d>] sys_write+0x4b/0x74 Feb 14 13:45:13 guru kernel: [<c0102cb5>] syscall_call+0x7/0xb
Obviously this process is non-killable and requires a reboot to get us back into working order.
Any help is appreciated.
Regards, Ian Morgan
-- ------------------------------------------------------------------- Ian E. Morgan Vice President & C.O.O. Webcon, Inc. imorgan at webcon dot ca PGP: #2DA40D07 www.webcon.ca * Customized Linux Network Solutions for your Business * ------------------------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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