On 01/12/2015 12:19 PM, Kirill A. Shutemov wrote: > On Mon, Jan 12, 2015 at 02:26:29PM +1100, Stephen Rothwell wrote: >> [Just cc'ing Andrew as this patch is in his tree] >> >> On Mon, 12 Jan 2015 11:19:01 +0800 Huang Ying <[email protected]> wrote: >> > >> > FYI, we noticed the below changes on >> > >> > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master >> > commit 974bb1d5d44f008d7f207437d63d46658ff41dff ("mm: replace >> > remap_file_pages() syscall with emulation") >> > >> > That is, trinity can be used to test some aspect of remap_file_pages.
Well, yeah :) I think the number of bugs trinity has already found in this area during the last year, was one of the reasons behind its deprecation and eventually removal. >> > >> > +---------------------------------------------------+------------+------------+ >> > | | d96eeaf2cb | >> > 974bb1d5d4 | >> > +---------------------------------------------------+------------+------------+ >> > | boot_successes | 0 | 0 >> > | >> > | boot_failures | 10 | 10 >> > | >> > | WARNING:at_net/netlink/genetlink.c:#genl_unbind() | 10 | 5 >> > | >> > | backtrace:netlink_setsockopt | 3 | 2 >> > | >> > | backtrace:SyS_setsockopt | 3 | 2 >> > | >> > | backtrace:SyS_socketcall | 3 | 2 >> > | >> > | backtrace:do_group_exit | 10 | 5 >> > | >> > | backtrace:SyS_exit_group | 10 | 5 >> > | >> > | page_allocation_failure:order:#,mode | 0 | 5 >> > | >> > | backtrace:btrfs_test_extent_io | 0 | 5 >> > | >> > | backtrace:init_btrfs_fs | 0 | 5 >> > | >> > | backtrace:kernel_init_freeable | 0 | 5 >> > | >> > +---------------------------------------------------+------------+------------+ >> > >> > >> > [ 29.665081] Bits 55-60 of /proc/PID/pagemap entries are about to stop >> > being page-shift some time soon. See the >> > linux/Documentation/vm/pagemap.txt for details. >> > [ 29.675960] mmap: trinity-c0 (873) uses deprecated remap_file_pages() >> > syscall. See Documentation/vm/remap_file_pages.txt. Is the warning above even related to the warning below, or just coincidence? The remap_file_pages() deprecation warning doesn't generate stacktrace AFAICS. >> > [ 29.681044] ------------[ cut here ]------------ >> > [ 29.681841] WARNING: CPU: 0 PID: 870 at net/netlink/genetlink.c:1037 >> > genl_unbind+0x96/0xaa() >> > [ 29.683610] warning: process `trinity-c0' used the obsolete bdflush >> > system call >> > [ 29.684911] Fix your initscripts? >> > [ 29.685683] VFS: Warning: trinity-c0 using old stat() call. Recompile >> > your binary. >> > [ 29.686963] CPU: 0 PID: 870 Comm: trinity-main Not tainted >> > 3.19.0-rc3-next-20150109-g06f367d #290 >> > [ 29.688399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 >> > [ 29.689349] 00000000 00000000 d34f3ea4 >> > [ 29.694083] ------------[ cut here ]------------ >> > [ 29.695096] WARNING: CPU: 0 PID: 872 at net/netlink/genetlink.c:1037 >> > genl_unbind+0x96/0xaa() >> > [ 29.696724] c15933f7 d34f3ec0 c103c7ff 0000040d c1581310 >> > [ 29.698051] 00000001 00000001 00000000 d34f3ed0 c103c89c 00000009 >> > 00000000 d34f3ee8 >> > [ 29.699904] CPU: 0 PID: 872 Comm: trinity-main Not tainted >> > 3.19.0-rc3-next-20150109-g06f367d #290 >> > [ 29.701406] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 >> > [ 29.702291] 00000000 00000000 d34d9ea4 c15933f7 d34d9ec0 >> > [ 29.703253] c1581310 c18836fc 00000001 d341f840 00000000 d34f3f0c >> > c157f810 d15b0b40 >> > [ 29.705361] Call Trace: >> > [ 29.705868] [<c15933f7>] dump_stack+0x16/0x18 >> > [ 29.706652] [<c103c7ff>] warn_slowpath_common+0x79/0x90 >> > [ 29.707496] [<c1581310>] ? genl_unbind+0x96/0xaa >> > [ 29.708295] [<c103c89c>] warn_slowpath_null+0xf/0x13 >> > [ 29.709142] [<c1581310>] genl_unbind+0x96/0xaa >> > [ 29.709943] [<c157f810>] netlink_release+0x2d7/0x2ed >> > [ 29.710776] [<c1553efd>] sock_release+0x10/0x5a >> > [ 29.711531] [<c1553f52>] sock_close+0xb/0xf >> > [ 29.712286] [<c1109a69>] __fput+0xf7/0x1f0 >> > [ 29.713044] [<c1109b88>] ____fput+0x8/0xa >> > [ 29.713794] [<c1052412>] task_work_run+0x4e/0x70 >> > [ 29.714566] [<c103e771>] do_exit+0x43a/0x9c7 >> > [ 29.715300] [<c103ed6f>] do_group_exit+0x4a/0xd6 >> > [ 29.716111] [<c103ee0c>] SyS_exit_group+0x11/0x11 >> > [ 29.716975] [<c1598cfd>] syscall_call+0x7/0x7 >> > [ 29.717722] [<c1590000>] ? io_submit_one+0x5b3/0x72a >> > [ 29.719207] c103c7ff 0000040d c1581310 >> > [ 29.720122] 00000001 00000001 00000000 d34d9ed0 c103c89c 00000009 >> > 00000000 d34d9ee8 >> > [ 29.721973] c1581310 c18836fc 00000004 d0ebb840 00000000 d34d9f0c >> > c157f810 >> > [ 29.723252] ---[ end trace 28426633f87b780a ]--- >> > [ 29.724282] ------------[ cut here ]------------ > > > It doesn't make much sense to me. I don't see anything > remap_file_pages()-related here. Or even VMA related. > > And why now? The commit is in Andrew's tree for few release cycles. > > Could you elaborate on what you observe? And what the table above means? > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
