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* [PATCH] fuse: check O_DIRECTMiklos Szeredi2005-09-30
| | | | | | | | | | | | | Check O_DIRECT and return -EINVAL error in open. dentry_open() also checks this but only after the open method is called. This patch optimizes away the unnecessary upcalls in this case. It could be a correctness issue too: if filesystem has open() with side effect, then it should fail before doing the open, not after. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] uml: remove empty hostfs_truncate methodPaolo 'Blaisorblade' Giarrusso2005-09-30
| | | | | | | | | | | | | | | | | | | | Calling truncate() on hostfs spits a kernel warning "Something isn't implemented here", but it still works fine. Indeed, hostfs i_op->truncate doesn't do anything. But hostfs_setattr() -> set_attr() correctly detects ATTR_SIZE and calls truncate() on the host. So we should be safe (using ftruncate() may be better, in case the file is unlinked on the host, but we aren't sure to have the file open for writing, and reopening it would cause the same races; plus nobody should expect UML to be so careful). So, the warning is wrong, because the current implementation is working. Al, am I correct, and can the warning be therefore dropped? CC: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] aio: avoid extra aio_{read,write} call when ki_left == 0Zach Brown2005-09-30
| | | | | | | | | | | | Recently aio_p{read,write} changed to perform retries internally rather than returning -EIOCBRETRY. This inadvertantly resulted in always calling aio_{read,write} with ki_left at 0 which would in turn immediately return 0. Harmless, but we can avoid this call by checking in the caller. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] aio: remove unlocked task_list test and resulting raceZach Brown2005-09-30
| | | | | | | | | | | | | | | | | | | | | | Only one of the run or kick path is supposed to put an iocb on the run list. If both of them do it than one of them can end up referencing a freed iocb. The kick path could delete the task_list item from the wait queue before getting the ctx_lock and putting the iocb on the run list. The run path was testing the task_list item outside the lock so that it could catch ki_retry methods that return -EIOCBRETRY *without* putting the iocb on a wait queue and promising to call kick_iocb. This unlocked check could then race with the kick path to cause both to try and put the iocb on the run list. The patch stops the run path from testing task_list by requring that any ki_retry that returns -EIOCBRETRY *must* guarantee that kick_iocb() will be called in the future. aio_p{read,write}, the only in-tree -EIOCBRETRY users, are updated. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] aio: lock around kiocbTryKick()Zach Brown2005-09-30
| | | | | | | | | | | | | | | | | | Only one of the run or kick path is supposed to put an iocb on the run list. If both of them do it than one of them can end up referencing a freed iocb. The kick patch could set the Kicked bit before acquiring the ctx_lock and putting the iocb on the run list. The run path, while holding the ctx_lock, could see this partial kick and mistake it for a kick that was deferred while it was doing work with the run_list NULLed out. It would then race with the kick thread to add the iocb to the run list. This patch moves the kick setting under the ctx_lock so that only one of the kick or run path queues the iocb on the run list, as intended. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] missing ERR_PTR in 9fsAl Viro2005-09-30
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] readv/writev syscalls are not checked by lsmKostik Belousov2005-09-29
| | | | | | | | | | | | | | it seems that readv(2)/writev(2) syscalls do not call file_permission callback. Looks like this is overlook. I have filled the issue into redhat bugzilla as https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169433 and got the recommendation to post this on lsm mailing list. The following trivial patch solves the problem. Signed-off-by: Kostik Belousov <kostikbel@gmail.com> Signed-off-by: Chris Wright <chrisw@osdl.org>
* [PATCH] epoll: handle timeout overflowDavide Libenzi2005-09-28
| | | | | | | | Handle the timeout upper boundary for epoll. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] v9fs: fix races in fid allocationLatchesar Ionkov2005-09-28
| | | | | | | | | | | | | | | | | | | | Fid management cleanup. The patch attempts to fix the races in dentry's fid management. Dentries don't keep the opened fids anymore, they are moved to the file structs. Ideally there should be no more than one fid with fidcreate equal to zero in the dentry's list of fids. v9fs_fid_create initializes the important fields (fid, fidcreated) before v9fs_fid is added to the list. v9fs_fid_lookup returns only fids that are not created by v9fs_create. v9fs_fid_get_created returns the fid created by the same process by v9fs_create (if any) and removes it from dentry's list Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix ext3_new_inode() failure pathsChris Sykes2005-09-28
| | | | | | | | | | | Fix failure paths in ext3_new_inode() and clean up duplicated code: - DQUOT_DROP() was not being called if ext3_init_security() failed. Signed-off-by: Chris Sykes <chris@sigsegv.plus.com> Cc: Stephen Smalley <sds@epoch.ncsc.mil> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix ext2_new_inode() failure pathsChris Sykes2005-09-28
| | | | | | | | | | | Fix failure paths in ext2_new_inode() and clean up duplicated code: - DQUOT_DROP() was not being called if ext2_init_security() failed. Signed-off-by: Chris Sykes <chris@sigsegv.plus.com> Cc: Stephen Smalley <sds@epoch.ncsc.mil> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: check reserved node ID valuesMiklos Szeredi2005-09-28
| | | | | | | | | This patch checks reserved node ID values returned by lookup and creation operations. In case one of the reserved values is sent, return -EIO. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fuse: add required version infoMiklos Szeredi2005-09-28
| | | | | | | | | | | | Add information about required version of the userspace library/utilities to Documentation/Changes. Also add pointer to this and to FUSE documentation from Kconfig. Thanks to Anton Altaparmakov for the reminder. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* NTFS: Re-fix sparse warnings in a more correct way, i.e. don't use an enum withAnton Altaparmakov2005-09-26
| | | | | | different types in it but #define the two constants instead. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* Merge branch 'master' of /home/src/linux-2.6/Anton Altaparmakov2005-09-26
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| * [PATCH] cifs: Add support for suspendSteve French2005-09-23
| | | | | | | | | | | | | | | | cifsd had been preventing software suspend from completing. Signed-off-by: pavel@suse.de Signed-off-by: Steve French <sfrench@us.ibm.com> lightly modified Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Merge branch 'for-linus' of ↵Linus Torvalds2005-09-23
| |\ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/shaggy/jfs-2.6
| | * JFS: don't dereference tlck->ip from txUpdateMapDave Kleikamp2005-09-20
| | | | | | | | | | | | | | | | | | The inode pointer may no longer be valid Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| | * JFS: Fix sparse warnings, including endian errorDave Kleikamp2005-09-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | The fix in inode.c is a real bug. It could result in undeleted, yet unconnected files on big-endian hardware. The others are trivial. Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
| * | [PATCH] NFS: fix client oops when debugging is onNick Wilson2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | nfs_readpage_release() causes an oops while accessing a file with NFS debugging turned on (echo 32767 > /proc/sys/sunrpc/nfs_debug) and a kernel built with CONFIG_DEBUG_SLAB. This patch moves the debugging statement above nfs_release_request() to avoid accessing freed memory. Signed-off-by: Nick Wilson <njw@osdl.org> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] ext3: EXT3_DEBUG build fixesGlauber de Oliveira Costa2005-09-23
| | | | | | | | | | | | | | | | | | | | | Fix some warnings and a build error when EXT3_DEBUG is enabled. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] ext3: ext3_show_options fixOGAWA Hirofumi2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | EXT3_MOUNT_DATA_FLAGS is not a boolean. This fixes it. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] v9fs: don't free root dentry & inode if error occurs in v9fs_get_sbLatchesar Ionkov2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If error occurs while in v9fs_get_sb after it calles sget, the dentry object of the root and its inode may be freed twice -- once while handling the error in v9fs_get_sb, and second time when v9fs_get_sb calles deactivate_super (which in turn calls v9fs_kill_super) The patch removes the unnecessary code that frees the root dentry and its inode. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] v9fs: replace strlen on newly allocated by __getname buffers to PATH_MAXLatchesar Ionkov2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | v9fs_vfs_readlink allocates space for the link using __getname and errorneously uses strlen on the newly allocated buffer to check if the buffer passed by the user is bigger than the one returned by __getname. The patch replaces the strlen usage to PATH_MAX, which is the actual size of the buffers returned by __getname. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] v9fs: make copy of the transport prototype instead of using it directlyLatchesar Ionkov2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a new session is created it uses a template object of the specified transport type to instantiate its own copy. The code for the making a copy of the template object was lost, and the object itself is attached to the v9fs session. This leads to many sessions using the same transport instead of having their own copy. The patch puts back the code that makes a copy of the template object. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] v9fs: allocate the Rwalk qid array from the right conv bufferLatchesar Ionkov2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When v9fs_deserealize_fcall deserializes a Rwalk message, it incorrectly allocates space for the qid array in the source instead of the destination buffer. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] v9fs: make conv functions to check for conv buffer overflowLatchesar Ionkov2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | buf_check_size function checks if the conv buffer has enough space for the performed operation, but it doesn't return the result back to the calling function, only logs an error in the log. The report-back-error functionality was lost when buf_check_size was converted from macro to inline function. The return in the macro used to exit from the functions that include it, after the conversion it just exits from the inline function itself. The patch makes buf_check_size to return flag and all functions that use it check if they should perform the operation, or exit. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] proc_task_root_link c99 fixAndrew Morton2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | fs/proc/base.c: In function `proc_task_root_link': fs/proc/base.c:364: warning: ISO C90 forbids mixed declarations and code Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | NTFS: More $LogFile handling fixes: when chkdsk has been run, it can leave theAnton Altaparmakov2005-09-26
| | | | | | | | | | | | | | | | | | | | | | | | restart pages in the journal without multi sector transfer protection fixups (i.e. the update sequence array is empty and in fact does not exist). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | | NTFS: Fix the definition of the CHKD ntfs record magic. It had an off byAnton Altaparmakov2005-09-26
| | | | | | | | | | | | | | | | | | two error causing it to be CHKB instead of CHKD. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | | NTFS: Change ntfs_cluster_free() to require a write locked runlist on entryAnton Altaparmakov2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | since we otherwise get into a lock reversal deadlock if a read locked runlist is passed in. In the process also change it to take an ntfs inode instead of a vfs inode as parameter. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | | NTFS: Fix sparse warnings that have crept in over time.Anton Altaparmakov2005-09-22
|/ / | | | | | | Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | [PATCH] fat: fix adateStephane Kardas2005-09-21
| | | | | | | | | | | | | | | | | | | | | | | | | | During a forensic analysis on the fat file system, I found than the result for the last access date on this file system was different between the stat command and the istat command (package tct-utils). The istat command display a true date (the right windows date) but the stat primitive (so stat, find, ls command) displays a wrong date. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix invisible threads problemSripathi Kodi2005-09-21
| | | | | | | | | | | | | | | | | | | | | | | | When the main thread of a thread group has done pthread_exit() and died, the other threads are still happily running, but will not be visible under /proc because their leader is no longer accessible. This fixes the access control so that we can see the sub-threads again. Signed-off-by: Sripathi Kodi <sripathik@in.ibm.com> Acked-by: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | NTFS: More runlist handling fixes from Richard Russon and myself.Anton Altaparmakov2005-09-20
| | | | | | | | Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | Make fsnotify possibly work better for the inode removal caseLinus Torvalds2005-09-19
| | | | | | | | | | | | | | Checking i_nlink is dubious, but the alternatives look even less appetizing. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'master' of /home/src/linux-2.6/Anton Altaparmakov2005-09-19
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| * | [PATCH] FAT: miss-sync issues on sync mount (miss-sync on write)OGAWA Hirofumi2005-09-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes miss-sync issue on write() system call. This updates inode attrs flags, mtime and ctime on every comit_write call, due to locking. Signed-off-by: Hiroyuki Machida <machida@sm.sony.co.jp> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] files: fix preemption issuesDipankar Sarma2005-09-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With the new fdtable locking rules, you have to protect fdtable with either ->file_lock or rcu_read_lock/unlock(). There are some places where we aren't doing either. This patch fixes those places. Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] Add smp_mb__after_clear_bit() to unlock_kiocb()Zach Brown2005-09-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add smp_mb__after_clear_bit() to unlock_kiocb() AIO's use of wait_on_bit_lock()/wake_up_bit() forgot to add a barrier between clearing its lock bit and calling wake_up_bit() so wake_up_bit()'s unlocked waitqueue_active() can race. This puts AIO's use in line with the others and the comment above wake_up_bit(). Signed-off-by: Zach Brown <zach.brown@oracle.com> Acked-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | [PATCH] epoll: fix delayed initialization bugDavide Libenzi2005-09-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Al found a potential problem in epoll_create(), where the file->private_data member was set after fd_install(). This is obviously wrong since another thread might do a close() on that fd# before we set the file->private_data member. This goes over 2.6.13 and passes a few basic tests I've done here. (akpm: snuck in a kzalloc() cleanup too) Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | | NTFS: Fix ntfs_{read,write}page() to cope with concurrent truncates better.Anton Altaparmakov2005-09-19
| | | | | | | | | | | | Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | | NTFS: Fix handling of compressed directories that I broke in earlier changeset.Anton Altaparmakov2005-09-19
| | | | | | | | | | | | Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | | NTFS: Fix various bugs in the runlist merging code. (Based on libntfsAnton Altaparmakov2005-09-19
|/ / | | | | | | | | | | changes by Richard Russon.) Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
* | [COMPAT]: Fixup compat_do_execve()David S. Miller2005-09-15
| | | | | | | | | | | | | | Missing acct_update_integrals() and update_mem_hiwater() calls compared to it's native counterpart. Signed-off-by: David S. Miller <davem@davemloft.net>
* | [PATCH] Fix the fdtable freeing in the case of vmalloced fdset/arraysDipankar Sarma2005-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Noted by David Miller: "The bug is that free_fd_array() takes a "num" argument, but when calling it from __free_fdtable() we're instead passing in the size in bytes (ie. "num * sizeof(struct file *)")." Yes it is a bug. I think I messed it up while merging newer changes with an older version where I was using size in bytes to optimize. Signed-off-by: Dipankar Sarma <dipankar@in.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] error path in setup_arg_pages() misses vm_unacct_memory()Hugh Dickins2005-09-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pavel Emelianov and Kirill Korotaev observe that fs and arch users of security_vm_enough_memory tend to forget to vm_unacct_memory when a failure occurs further down (typically in setup_arg_pages variants). These are all users of insert_vm_struct, and that reservation will only be unaccounted on exit if the vma is marked VM_ACCOUNT: which in some cases it is (hidden inside VM_STACK_FLAGS) and in some cases it isn't. So x86_64 32-bit and ppc64 vDSO ELFs have been leaking memory into Committed_AS each time they're run. But don't add VM_ACCOUNT to them, it's inappropriate to reserve against the very unlikely case that gdb be used to COW a vDSO page - we ought to do something about that in do_wp_page, but there are yet other inconsistencies to be resolved. The safe and economical way to fix this is to let insert_vm_struct do the security_vm_enough_memory check when it finds VM_ACCOUNT is set. And the MIPS irix_brk has been calling security_vm_enough_memory before calling do_brk which repeats it, doubly accounting and so also leaking. Remove that, and all the fs and arch calls to security_vm_enough_memory: give it a less misleading name later on. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-Off-By: Kirill Korotaev <dev@sw.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] Fix fs/exec.c:788 (de_thread()) BUG_ONAlexander Nyberg2005-09-14
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It turns out that the BUG_ON() in fs/exec.c: de_thread() is unreliable and can trigger due to the test itself being racy. de_thread() does while (atomic_read(&sig->count) > count) { } ..... ..... BUG_ON(!thread_group_empty(current)); but release_task does write_lock_irq(&tasklist_lock) __exit_signal (this is where atomic_dec(&sig->count) is run) __exit_sighand __unhash_process takes write lock on tasklist_lock remove itself out of PIDTYPE_TGID list write_unlock_irq(&tasklist_lock) so there's a clear (although small) window between the atomic_dec(&sig->count) and the actual PIDTYPE_TGID unhashing of the thread. And actually there is no need for all threads to have exited at this point, so we simply kill the BUG_ON. Big thanks to Marc Lehmann who provided the test-case. Fixes Bug 5170 (http://bugme.osdl.org/show_bug.cgi?id=5170) Signed-off-by: Alexander Nyberg <alexn@telia.com> Cc: Roland McGrath <roland@redhat.com> Cc: Andrew Morton <akpm@osdl.org> Cc: Ingo Molnar <mingo@elte.hu> Acked-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/dwmw2/audit-2.6 Linus Torvalds2005-09-13
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| * Merge with master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6.gitDavid Woodhouse2005-08-27
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