Home » Mailing list archives » linux-kernel » 2008 » June » 17

Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6.26-rc5-mm3

!MAILaRCHIVE_VOTE_RePLACE
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
[view in full thread]
From: Hugh Dickins <hugh@...>
To: Lee Schermerhorn <Lee.Schermerhorn@...>
Cc: Daisuke Nishimura <nishimura@...>, Andrew Morton <akpm@...>, Rik van Riel <riel@...>, Kosaki Motohiro <kosaki.motohiro@...>, Nick Piggin <npiggin@...>, <linux-mm@...>, <linux-kernel@...>, <kernel-testers@...>
Subject: Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6.26-rc5-mm3
Date: Tuesday, June 17, 2008 - 2:33 pm

On Tue, 17 Jun 2008, Lee Schermerhorn wrote:

Disagree: IIRC, excellent example of the kind of assumption
that becomes invalid with Nick's speculative page references.

Someone interested in the previous use of the page may have
incremented the refcount, and in due course will find that
it's got reused for something else, and will then back off.

Hugh
--
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
Messages in current thread:
2.6.26-rc5-mm3, Andrew Morton, (Thu Jun 12, 1:59 am)
Re: 2.6.26-rc5-mm3: BUG large value for HugePages_Rsvd, Jon Tollefson, (Thu Jun 19, 12:27 pm)
[RFC] hugetlb reservations -- MAP_PRIVATE fixes for split vm..., Andy Whitcroft, (Mon Jun 23, 1:35 pm)
Re: [RFC] hugetlb reservations -- MAP_PRIVATE fixes for spli..., Jon Tollefson, (Wed Jun 25, 5:22 pm)
[PATCH 2/2] hugetlb reservations: fix hugetlb MAP_PRIVATE re..., Andy Whitcroft, (Mon Jun 23, 1:35 pm)
Re: [PATCH 2/2] hugetlb reservations: fix hugetlb MAP_PRIVAT..., Mel Gorman, (Mon Jun 23, 7:08 pm)
[PATCH 1/2] hugetlb reservations: move region tracking earlier, Andy Whitcroft, (Mon Jun 23, 1:35 pm)
Re: [PATCH 1/2] hugetlb reservations: move region tracking e..., Mel Gorman, (Mon Jun 23, 7:05 pm)
[RFC] hugetlb reservations -- MAP_PRIVATE fixes for split vmas, Andy Whitcroft, (Fri Jun 20, 3:17 pm)
Re: [RFC] hugetlb reservations -- MAP_PRIVATE fixes for spli..., Jon Tollefson, (Mon Jun 23, 12:04 pm)
[PATCH 1/2] hugetlb reservations: move region tracking earlier, Andy Whitcroft, (Fri Jun 20, 3:17 pm)
[PATCH 2/2] hugetlb reservations: fix hugetlb MAP_PRIVATE re..., Andy Whitcroft, (Fri Jun 20, 3:17 pm)
Re: [PATCH 2/2] hugetlb reservations: fix hugetlb MAP_PRIVAT..., Mel Gorman, (Mon Jun 23, 4:00 am)
Re: [PATCH 2/2] hugetlb reservations: fix hugetlb MAP_PRIVAT..., Andy Whitcroft, (Mon Jun 23, 5:53 am)
Re: [PATCH 2/2] hugetlb reservations: fix hugetlb MAP_PRIVAT..., Mel Gorman, (Mon Jun 23, 3:33 am)
Re: 2.6.26-rc5-mm3: BUG large value for HugePages_Rsvd, Andy Whitcroft, (Thu Jun 19, 1:16 pm)
Re: 2.6.26-rc5-mm3: BUG large value for HugePages_Rsvd, Jon Tollefson, (Thu Jun 19, 11:18 pm)
[BUG][PATCH -mm] avoid BUG() in __stop_machine_run(), Hidehiro Kawai, (Thu Jun 19, 2:59 am)
Re: [BUG][PATCH -mm] avoid BUG() in __stop_machine_run(), Rusty Russell, (Thu Jun 19, 6:12 am)
Re: [BUG][PATCH -mm] avoid BUG() in __stop_machine_run(), Jeremy Fitzhardinge, (Thu Jun 19, 11:51 am)
Re: [BUG][PATCH -mm] avoid BUG() in __stop_machine_run(), Ingo Molnar, (Fri Jun 20, 9:21 am)
Re: [BUG][PATCH -mm] avoid BUG() in __stop_machine_run(), Rusty Russell, (Sun Jun 22, 11:55 pm)
Re: [BUG][PATCH -mm] avoid BUG() in __stop_machine_run(), Ingo Molnar, (Mon Jun 23, 5:01 pm)
[PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6.26-r..., Daisuke Nishimura, (Tue Jun 17, 3:35 am)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., KAMEZAWA Hiroyuki, (Tue Jun 17, 9:13 pm)
[PATCH] migration_entry_wait fix., KAMEZAWA Hiroyuki, (Tue Jun 17, 9:54 pm)
Re: [PATCH] migration_entry_wait fix., Nick Piggin, (Wed Jun 18, 1:35 am)
Re: [PATCH] migration_entry_wait fix., KAMEZAWA Hiroyuki, (Wed Jun 18, 2:04 am)
Re: [PATCH] migration_entry_wait fix., Nick Piggin, (Wed Jun 18, 2:42 am)
Re: [PATCH] migration_entry_wait fix., KAMEZAWA Hiroyuki, (Wed Jun 18, 2:52 am)
[PATCH -mm][BUGFIX] migration_entry_wait fix. v2, KAMEZAWA Hiroyuki, (Wed Jun 18, 3:29 am)
Re: [PATCH -mm][BUGFIX] migration_entry_wait fix. v2, Nick Piggin, (Wed Jun 18, 3:40 am)
Re: [PATCH -mm][BUGFIX] migration_entry_wait fix. v2, KOSAKI Motohiro, (Wed Jun 18, 3:26 am)
Re: [PATCH] migration_entry_wait fix., KOSAKI Motohiro, (Wed Jun 18, 1:26 am)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Daisuke Nishimura, (Tue Jun 17, 9:26 pm)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Lee Schermerhorn, (Tue Jun 17, 1:46 pm)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Daisuke Nishimura, (Tue Jun 17, 10:59 pm)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Hugh Dickins, (Tue Jun 17, 2:33 pm)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Lee Schermerhorn, (Tue Jun 17, 3:28 pm)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Nick Piggin, (Wed Jun 18, 1:19 am)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., KOSAKI Motohiro, (Tue Jun 17, 11:33 am)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Daisuke Nishimura, (Tue Jun 17, 9:54 pm)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., Daisuke Nishimura, (Wed Jun 18, 12:41 am)
[PATCH][-mm] remove redundant page-&gt;mapping check, KOSAKI Motohiro, (Wed Jun 18, 3:54 am)
Re: [PATCH][RFC] fix kernel BUG at mm/migrate.c:719! in 2.6...., KAMEZAWA Hiroyuki, (Wed Jun 18, 12:59 am)
[Bad page] trying to free locked page? (Re: [PATCH][RFC] fix..., Daisuke Nishimura, (Tue Jun 17, 3:47 am)
[Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Wed Jun 18, 5:40 am)
Re: [Experimental][PATCH] putback_lru_page rework, Lee Schermerhorn, (Wed Jun 18, 2:21 pm)
Re: [Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Wed Jun 18, 8:22 pm)
Re: [Experimental][PATCH] putback_lru_page rework, Lee Schermerhorn, (Thu Jun 19, 10:45 am)
Re: [Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Thu Jun 19, 9:13 pm)
Re: [Experimental][PATCH] putback_lru_page rework, KOSAKI Motohiro, (Sat Jun 21, 4:39 am)
Re: [Experimental][PATCH] putback_lru_page rework, Lee Schermerhorn, (Fri Jun 20, 1:10 pm)
Re: [Experimental][PATCH] putback_lru_page rework, KOSAKI Motohiro, (Sat Jun 21, 4:41 am)
Re: [Experimental][PATCH] putback_lru_page rework, Lee Schermerhorn, (Fri Jun 20, 4:41 pm)
Re: [Experimental][PATCH] putback_lru_page rework, KOSAKI Motohiro, (Sat Jun 21, 4:56 am)
Re: [Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Sun Jun 22, 8:30 pm)
Re: [Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Thu Jun 19, 8:47 pm)
Re: Re: [Experimental][PATCH] putback_lru_page rework, , (Thu Jun 19, 11:32 am)
Re: Re: [Experimental][PATCH] putback_lru_page rework, Lee Schermerhorn, (Fri Jun 20, 12:24 pm)
Re: [Experimental][PATCH] putback_lru_page rework, Daisuke Nishimura, (Wed Jun 18, 10:50 am)
Re: [Experimental][PATCH] putback_lru_page rework, KOSAKI Motohiro, (Wed Jun 18, 7:36 am)
Re: [Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Wed Jun 18, 7:55 am)
Re: [Experimental][PATCH] putback_lru_page rework, Daisuke Nishimura, (Thu Jun 19, 4:00 am)
Re: [Experimental][PATCH] putback_lru_page rework, KAMEZAWA Hiroyuki, (Thu Jun 19, 4:24 am)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., KOSAKI Motohiro, (Tue Jun 17, 11:34 am)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., Daisuke Nishimura, (Tue Jun 17, 10:32 pm)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., KOSAKI Motohiro, (Wed Jun 18, 6:20 am)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., KAMEZAWA Hiroyuki, (Tue Jun 17, 5:03 am)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., Daisuke Nishimura, (Tue Jun 17, 5:15 am)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., Lee Schermerhorn, (Tue Jun 17, 2:29 pm)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., Daisuke Nishimura, (Tue Jun 17, 10:40 pm)
[PATCH] unevictable mlocked pages: initialize mm member of ..., Lee Schermerhorn, (Tue Jun 17, 4:00 pm)
Re: [PATCH] unevictable mlocked pages: initialize mm member..., KOSAKI Motohiro, (Tue Jun 17, 11:33 pm)
Re: [Bad page] trying to free locked page? (Re: [PATCH][RFC]..., KOSAKI Motohiro, (Tue Jun 17, 5:14 am)
Re: 2.6.26-rc5-mm3, Byron Bradley, (Thu Jun 12, 7:32 pm)
Re: 2.6.26-rc5-mm3, Daniel Walker, (Wed Jun 18, 1:55 pm)
Re: 2.6.26-rc5-mm3, Ingo Molnar, (Thu Jun 19, 5:13 am)
Re: 2.6.26-rc5-mm3, Daniel Walker, (Thu Jun 19, 10:39 am)
Re: 2.6.26-rc5-mm3, Daniel Walker, (Thu Jun 12, 7:55 pm)
Re: 2.6.26-rc5-mm3, Byron Bradley, (Thu Jun 12, 8:04 pm)
[BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, Kamalesh Babulal, (Thu Jun 12, 4:44 am)
Re: [BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, , (Fri Jun 13, 12:18 am)
Re: [BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, Andrew Morton, (Fri Jun 13, 3:16 am)
Re: [BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, Andrew Morton, (Thu Jun 12, 4:57 am)
Re: [BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, Nick Piggin, (Thu Jun 12, 7:38 am)
Re: [BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, KAMEZAWA Hiroyuki, (Thu Jun 12, 8:25 pm)
Re: [BUG] 2.6.26-rc5-mm3 kernel BUG at mm/filemap.c:575!, KAMEZAWA Hiroyuki, (Thu Jun 12, 7:20 am)
[PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kernel BU..., KAMEZAWA Hiroyuki, (Thu Jun 12, 9:44 pm)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., Kamalesh Babulal, (Sat Jun 14, 9:32 am)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., , (Fri Jun 13, 12:34 am)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., Andrew Morton, (Thu Jun 12, 10:13 pm)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., Lee Schermerhorn, (Fri Jun 13, 11:30 am)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., KAMEZAWA Hiroyuki, (Mon Jun 16, 10:32 pm)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., Lee Schermerhorn, (Tue Jun 17, 11:26 am)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., Lee Schermerhorn, (Mon Jun 16, 10:49 am)
Re: [PATCH] fix double unlock_page() in 2.6.26-rc5-mm3 kerne..., Kamalesh Babulal, (Sat Jun 14, 11:59 pm)
2.6.26-rc5-mm3: kernel BUG at mm/vmscan.c:510, Alexey Dobriyan, (Thu Jun 12, 3:58 am)
Re: 2.6.26-rc5-mm3: kernel BUG at mm/vmscan.c:510, Andrew Morton, (Thu Jun 12, 4:22 am)
Re: 2.6.26-rc5-mm3: kernel BUG at mm/vmscan.c:510, Alexey Dobriyan, (Thu Jun 12, 4:23 am)