Re: [RFC][PATCH] XFS: memory leak in xfs_inactive() - is xfs_trans_free() enough or do we need xfs_trans_cancel() ?
Any chance the patches below that fix two mem leaks in XFS will make it in in time for 2.6.22? I believe they should... On 18/05/07, Jesper Juhl <[EMAIL PROTECTED]> wrote: On Thursday 17 May 2007 04:40:24 David Chinner wrote: > On Wed, May 16, 2007 at 11:31:16PM +0200, Jesper Juhl wrote: > > Hi, > > > > The Coverity checker found a memory leak in xfs_inactive(). > > > So, the code allocates a transaction, but in the case where 'truncate' is > > !=0 and xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); happens to return > > an error, we'll just return from the function without dealing with the > > memory allocated byxfs_trans_alloc() and assigned to 'tp', thus it'll be > > orphaned/leaked - not good. > > Yeah, introduced by: > > http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3cf209476b72c83907a412b6708c5e498410aa7 > > Thanks for reporting the problem, Jesper. > You are welcome. That commit introduces the same problem in xfs_inactive_free_eofblocks(). Patch to fix it below. > > What I'm wondering is this; is it enough, at this point, to call > > xfs_trans_free(tp); (it would seem to me that would be OK, but I'm not > > intimite with this code) or do we need a full xfs_trans_cancel(tp, 0); ??? > > xfs_trans_free() is not supposed to be called by anything but the transaction > code (it's static). So a xfs_trans_cancel() would need to be issued. > Makes sense. Thanks. I completely missed the static nature :-/ Fix XFS memory leak; allocated transaction not freed in xfs_inactive_free_eofblocks() in failure case. Signed-off-by: Jesper Juhl <[EMAIL PROTECTED]> --- fs/xfs/xfs_vnodeops.c |1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index de17aed..32519cf 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1260,6 +1260,7 @@ xfs_inactive_free_eofblocks( error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, ip->i_size); if (error) { + xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return error; } -- Jesper Juhl <[EMAIL PROTECTED]> Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html - 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/
Re: [RFC][PATCH] XFS: memory leak in xfs_inactive() - is xfs_trans_free() enough or do we need xfs_trans_cancel() ?
Any chance the patches below that fix two mem leaks in XFS will make it in in time for 2.6.22? I believe they should... On 18/05/07, Jesper Juhl [EMAIL PROTECTED] wrote: On Thursday 17 May 2007 04:40:24 David Chinner wrote: On Wed, May 16, 2007 at 11:31:16PM +0200, Jesper Juhl wrote: Hi, The Coverity checker found a memory leak in xfs_inactive(). So, the code allocates a transaction, but in the case where 'truncate' is !=0 and xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); happens to return an error, we'll just return from the function without dealing with the memory allocated byxfs_trans_alloc() and assigned to 'tp', thus it'll be orphaned/leaked - not good. Yeah, introduced by: http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3cf209476b72c83907a412b6708c5e498410aa7 Thanks for reporting the problem, Jesper. You are welcome. That commit introduces the same problem in xfs_inactive_free_eofblocks(). Patch to fix it below. What I'm wondering is this; is it enough, at this point, to call xfs_trans_free(tp); (it would seem to me that would be OK, but I'm not intimite with this code) or do we need a full xfs_trans_cancel(tp, 0); ??? xfs_trans_free() is not supposed to be called by anything but the transaction code (it's static). So a xfs_trans_cancel() would need to be issued. Makes sense. Thanks. I completely missed the static nature :-/ Fix XFS memory leak; allocated transaction not freed in xfs_inactive_free_eofblocks() in failure case. Signed-off-by: Jesper Juhl [EMAIL PROTECTED] --- fs/xfs/xfs_vnodeops.c |1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index de17aed..32519cf 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1260,6 +1260,7 @@ xfs_inactive_free_eofblocks( error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, ip-i_size); if (error) { + xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return error; } -- Jesper Juhl [EMAIL PROTECTED] Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html Plain text mails only, please http://www.expita.com/nomime.html - 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/
Re: [RFC][PATCH] XFS: memory leak in xfs_inactive() - is xfs_trans_free() enough or do we need xfs_trans_cancel() ?
On Thursday 17 May 2007 04:40:24 David Chinner wrote: > On Wed, May 16, 2007 at 11:31:16PM +0200, Jesper Juhl wrote: > > Hi, > > > > The Coverity checker found a memory leak in xfs_inactive(). > > > So, the code allocates a transaction, but in the case where 'truncate' is > > !=0 and xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); happens to return > > an error, we'll just return from the function without dealing with the > > memory allocated byxfs_trans_alloc() and assigned to 'tp', thus it'll be > > orphaned/leaked - not good. > > Yeah, introduced by: > > http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3cf209476b72c83907a412b6708c5e498410aa7 > > Thanks for reporting the problem, Jesper. > You are welcome. That commit introduces the same problem in xfs_inactive_free_eofblocks(). Patch to fix it below. > > What I'm wondering is this; is it enough, at this point, to call > > xfs_trans_free(tp); (it would seem to me that would be OK, but I'm not > > intimite with this code) or do we need a full xfs_trans_cancel(tp, 0); ??? > > xfs_trans_free() is not supposed to be called by anything but the transaction > code (it's static). So a xfs_trans_cancel() would need to be issued. > Makes sense. Thanks. I completely missed the static nature :-/ Fix XFS memory leak; allocated transaction not freed in xfs_inactive_free_eofblocks() in failure case. Signed-off-by: Jesper Juhl <[EMAIL PROTECTED]> --- fs/xfs/xfs_vnodeops.c |1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index de17aed..32519cf 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1260,6 +1260,7 @@ xfs_inactive_free_eofblocks( error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, ip->i_size); if (error) { + xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return error; } - 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/
Re: [RFC][PATCH] XFS: memory leak in xfs_inactive() - is xfs_trans_free() enough or do we need xfs_trans_cancel() ?
On Thursday 17 May 2007 04:40:24 David Chinner wrote: On Wed, May 16, 2007 at 11:31:16PM +0200, Jesper Juhl wrote: Hi, The Coverity checker found a memory leak in xfs_inactive(). So, the code allocates a transaction, but in the case where 'truncate' is !=0 and xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); happens to return an error, we'll just return from the function without dealing with the memory allocated byxfs_trans_alloc() and assigned to 'tp', thus it'll be orphaned/leaked - not good. Yeah, introduced by: http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3cf209476b72c83907a412b6708c5e498410aa7 Thanks for reporting the problem, Jesper. You are welcome. That commit introduces the same problem in xfs_inactive_free_eofblocks(). Patch to fix it below. What I'm wondering is this; is it enough, at this point, to call xfs_trans_free(tp); (it would seem to me that would be OK, but I'm not intimite with this code) or do we need a full xfs_trans_cancel(tp, 0); ??? xfs_trans_free() is not supposed to be called by anything but the transaction code (it's static). So a xfs_trans_cancel() would need to be issued. Makes sense. Thanks. I completely missed the static nature :-/ Fix XFS memory leak; allocated transaction not freed in xfs_inactive_free_eofblocks() in failure case. Signed-off-by: Jesper Juhl [EMAIL PROTECTED] --- fs/xfs/xfs_vnodeops.c |1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c index de17aed..32519cf 100644 --- a/fs/xfs/xfs_vnodeops.c +++ b/fs/xfs/xfs_vnodeops.c @@ -1260,6 +1260,7 @@ xfs_inactive_free_eofblocks( error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, ip-i_size); if (error) { + xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return error; } - 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/
Re: [RFC][PATCH] XFS: memory leak in xfs_inactive() - is xfs_trans_free() enough or do we need xfs_trans_cancel() ?
On Wed, May 16, 2007 at 11:31:16PM +0200, Jesper Juhl wrote: > Hi, > > The Coverity checker found a memory leak in xfs_inactive(). > So, the code allocates a transaction, but in the case where 'truncate' is > !=0 and xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); happens to return > an error, we'll just return from the function without dealing with the > memory allocated byxfs_trans_alloc() and assigned to 'tp', thus it'll be > orphaned/leaked - not good. Yeah, introduced by: http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3cf209476b72c83907a412b6708c5e498410aa7 Thanks for reporting the problem, Jesper. > What I'm wondering is this; is it enough, at this point, to call > xfs_trans_free(tp); (it would seem to me that would be OK, but I'm not > intimite with this code) or do we need a full xfs_trans_cancel(tp, 0); ??? xfs_trans_free() is not supposed to be called by anything but the transaction code (it's static). So a xfs_trans_cancel() would need to be issued. > In case I'm right and xfs_trans_free(tp); is all we need, then please > consider the patch below. Otherwise please NACK the patch and I'll cook up > another one :-) NACK ;) xfs_trans_cancel() is needed. Patch below. Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group --- fs/xfs/xfs_vnodeops.c |1 + 1 file changed, 1 insertion(+) Index: 2.6.x-xfs-new/fs/xfs/xfs_vnodeops.c === --- 2.6.x-xfs-new.orig/fs/xfs/xfs_vnodeops.c2007-05-11 16:04:03.0 +1000 +++ 2.6.x-xfs-new/fs/xfs/xfs_vnodeops.c 2007-05-17 12:37:25.671399078 +1000 @@ -1710,6 +1710,7 @@ xfs_inactive( error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); if (error) { + xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return VN_INACTIVE_CACHE; } - 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/
Re: [RFC][PATCH] XFS: memory leak in xfs_inactive() - is xfs_trans_free() enough or do we need xfs_trans_cancel() ?
On Wed, May 16, 2007 at 11:31:16PM +0200, Jesper Juhl wrote: Hi, The Coverity checker found a memory leak in xfs_inactive(). So, the code allocates a transaction, but in the case where 'truncate' is !=0 and xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); happens to return an error, we'll just return from the function without dealing with the memory allocated byxfs_trans_alloc() and assigned to 'tp', thus it'll be orphaned/leaked - not good. Yeah, introduced by: http://git2.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d3cf209476b72c83907a412b6708c5e498410aa7 Thanks for reporting the problem, Jesper. What I'm wondering is this; is it enough, at this point, to call xfs_trans_free(tp); (it would seem to me that would be OK, but I'm not intimite with this code) or do we need a full xfs_trans_cancel(tp, 0); ??? xfs_trans_free() is not supposed to be called by anything but the transaction code (it's static). So a xfs_trans_cancel() would need to be issued. In case I'm right and xfs_trans_free(tp); is all we need, then please consider the patch below. Otherwise please NACK the patch and I'll cook up another one :-) NACK ;) xfs_trans_cancel() is needed. Patch below. Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group --- fs/xfs/xfs_vnodeops.c |1 + 1 file changed, 1 insertion(+) Index: 2.6.x-xfs-new/fs/xfs/xfs_vnodeops.c === --- 2.6.x-xfs-new.orig/fs/xfs/xfs_vnodeops.c2007-05-11 16:04:03.0 +1000 +++ 2.6.x-xfs-new/fs/xfs/xfs_vnodeops.c 2007-05-17 12:37:25.671399078 +1000 @@ -1710,6 +1710,7 @@ xfs_inactive( error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, 0); if (error) { + xfs_trans_cancel(tp, 0); xfs_iunlock(ip, XFS_IOLOCK_EXCL); return VN_INACTIVE_CACHE; } - 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/