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FAILED: patch "[PATCH] xfs: don't lose solo dquot update transactions" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 07137e925fa951646325762bda6bd2503dfe64c6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121513-porcupine-corporate-5dfe@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 07137e925fa951646325762bda6bd2503dfe64c6 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:36 -0800 Subject: [PATCH] xfs: don't lose solo dquot update transactions Quota counter updates are tracked via incore objects which hang off the xfs_trans object. These changes are then turned into dirty log items in xfs_trans_apply_dquot_deltas just prior to commiting the log items to the CIL. However, updating the incore deltas do not cause XFS_TRANS_DIRTY to be set on the transaction. In other words, a pure quota counter update will be silently discarded if there are no other dirty log items attached to the transaction. This is currently not the case anywhere in the filesystem because quota updates always dirty at least one other metadata item, but a subsequent bug fix will add dquot log item precommits, so we actually need a dirty dquot log item prior to xfs_trans_run_precommits. Also let's not leave a logic bomb. Cc: <stable(a)vger.kernel.org> # v2.6.35 Fixes: 0924378a689ccb ("xfs: split out iclog writing from xfs_trans_commit()") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index fa1317cc396c..d7565462af3d 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -101,7 +101,8 @@ extern void xfs_trans_free_dqinfo(struct xfs_trans *); extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *, uint, int64_t); extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *); -extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *); +void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *tp, + bool already_locked); int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip, int64_t dblocks, int64_t rblocks, bool force); extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, @@ -173,7 +174,7 @@ static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp, { } #define xfs_trans_apply_dquot_deltas(tp) -#define xfs_trans_unreserve_and_mod_dquots(tp) +#define xfs_trans_unreserve_and_mod_dquots(tp, a) static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip, int64_t dblocks, int64_t rblocks, bool force) diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 427a8ba0ab99..4cd25717c9d1 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -866,6 +866,7 @@ __xfs_trans_commit( */ if (tp->t_flags & XFS_TRANS_SB_DIRTY) xfs_trans_apply_sb_deltas(tp); + xfs_trans_apply_dquot_deltas(tp); error = xfs_trans_run_precommits(tp); if (error) @@ -894,11 +895,6 @@ __xfs_trans_commit( ASSERT(tp->t_ticket != NULL); - /* - * If we need to update the superblock, then do it now. - */ - xfs_trans_apply_dquot_deltas(tp); - xlog_cil_commit(log, tp, &commit_seq, regrant); xfs_trans_free(tp); @@ -924,7 +920,7 @@ __xfs_trans_commit( * the dqinfo portion to be. All that means is that we have some * (non-persistent) quota reservations that need to be unreserved. */ - xfs_trans_unreserve_and_mod_dquots(tp); + xfs_trans_unreserve_and_mod_dquots(tp, true); if (tp->t_ticket) { if (regrant && !xlog_is_shutdown(log)) xfs_log_ticket_regrant(log, tp->t_ticket); @@ -1018,7 +1014,7 @@ xfs_trans_cancel( } #endif xfs_trans_unreserve_and_mod_sb(tp); - xfs_trans_unreserve_and_mod_dquots(tp); + xfs_trans_unreserve_and_mod_dquots(tp, false); if (tp->t_ticket) { xfs_log_ticket_ungrant(log, tp->t_ticket); diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c index 481ba3dc9f19..713b6d243e56 100644 --- a/fs/xfs/xfs_trans_dquot.c +++ b/fs/xfs/xfs_trans_dquot.c @@ -606,6 +606,24 @@ xfs_trans_apply_dquot_deltas( ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count); ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count); ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count); + + /* + * We've applied the count changes and given back + * whatever reservation we didn't use. Zero out the + * dqtrx fields. + */ + qtrx->qt_blk_res = 0; + qtrx->qt_bcount_delta = 0; + qtrx->qt_delbcnt_delta = 0; + + qtrx->qt_rtblk_res = 0; + qtrx->qt_rtblk_res_used = 0; + qtrx->qt_rtbcount_delta = 0; + qtrx->qt_delrtb_delta = 0; + + qtrx->qt_ino_res = 0; + qtrx->qt_ino_res_used = 0; + qtrx->qt_icount_delta = 0; } } } @@ -642,7 +660,8 @@ xfs_trans_unreserve_and_mod_dquots_hook( */ void xfs_trans_unreserve_and_mod_dquots( - struct xfs_trans *tp) + struct xfs_trans *tp, + bool already_locked) { int i, j; struct xfs_dquot *dqp; @@ -671,10 +690,12 @@ xfs_trans_unreserve_and_mod_dquots( * about the number of blocks used field, or deltas. * Also we don't bother to zero the fields. */ - locked = false; + locked = already_locked; if (qtrx->qt_blk_res) { - xfs_dqlock(dqp); - locked = true; + if (!locked) { + xfs_dqlock(dqp); + locked = true; + } dqp->q_blk.reserved -= (xfs_qcnt_t)qtrx->qt_blk_res; } @@ -695,7 +716,7 @@ xfs_trans_unreserve_and_mod_dquots( dqp->q_rtb.reserved -= (xfs_qcnt_t)qtrx->qt_rtblk_res; } - if (locked) + if (locked && !already_locked) xfs_dqunlock(dqp); }

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: don't lose solo dquot update transactions" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 07137e925fa951646325762bda6bd2503dfe64c6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121512-nimbly-playlist-a34e@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 07137e925fa951646325762bda6bd2503dfe64c6 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:36 -0800 Subject: [PATCH] xfs: don't lose solo dquot update transactions Quota counter updates are tracked via incore objects which hang off the xfs_trans object. These changes are then turned into dirty log items in xfs_trans_apply_dquot_deltas just prior to commiting the log items to the CIL. However, updating the incore deltas do not cause XFS_TRANS_DIRTY to be set on the transaction. In other words, a pure quota counter update will be silently discarded if there are no other dirty log items attached to the transaction. This is currently not the case anywhere in the filesystem because quota updates always dirty at least one other metadata item, but a subsequent bug fix will add dquot log item precommits, so we actually need a dirty dquot log item prior to xfs_trans_run_precommits. Also let's not leave a logic bomb. Cc: <stable(a)vger.kernel.org> # v2.6.35 Fixes: 0924378a689ccb ("xfs: split out iclog writing from xfs_trans_commit()") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index fa1317cc396c..d7565462af3d 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -101,7 +101,8 @@ extern void xfs_trans_free_dqinfo(struct xfs_trans *); extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *, uint, int64_t); extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *); -extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *); +void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *tp, + bool already_locked); int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip, int64_t dblocks, int64_t rblocks, bool force); extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, @@ -173,7 +174,7 @@ static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp, { } #define xfs_trans_apply_dquot_deltas(tp) -#define xfs_trans_unreserve_and_mod_dquots(tp) +#define xfs_trans_unreserve_and_mod_dquots(tp, a) static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip, int64_t dblocks, int64_t rblocks, bool force) diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 427a8ba0ab99..4cd25717c9d1 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -866,6 +866,7 @@ __xfs_trans_commit( */ if (tp->t_flags & XFS_TRANS_SB_DIRTY) xfs_trans_apply_sb_deltas(tp); + xfs_trans_apply_dquot_deltas(tp); error = xfs_trans_run_precommits(tp); if (error) @@ -894,11 +895,6 @@ __xfs_trans_commit( ASSERT(tp->t_ticket != NULL); - /* - * If we need to update the superblock, then do it now. - */ - xfs_trans_apply_dquot_deltas(tp); - xlog_cil_commit(log, tp, &commit_seq, regrant); xfs_trans_free(tp); @@ -924,7 +920,7 @@ __xfs_trans_commit( * the dqinfo portion to be. All that means is that we have some * (non-persistent) quota reservations that need to be unreserved. */ - xfs_trans_unreserve_and_mod_dquots(tp); + xfs_trans_unreserve_and_mod_dquots(tp, true); if (tp->t_ticket) { if (regrant && !xlog_is_shutdown(log)) xfs_log_ticket_regrant(log, tp->t_ticket); @@ -1018,7 +1014,7 @@ xfs_trans_cancel( } #endif xfs_trans_unreserve_and_mod_sb(tp); - xfs_trans_unreserve_and_mod_dquots(tp); + xfs_trans_unreserve_and_mod_dquots(tp, false); if (tp->t_ticket) { xfs_log_ticket_ungrant(log, tp->t_ticket); diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c index 481ba3dc9f19..713b6d243e56 100644 --- a/fs/xfs/xfs_trans_dquot.c +++ b/fs/xfs/xfs_trans_dquot.c @@ -606,6 +606,24 @@ xfs_trans_apply_dquot_deltas( ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count); ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count); ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count); + + /* + * We've applied the count changes and given back + * whatever reservation we didn't use. Zero out the + * dqtrx fields. + */ + qtrx->qt_blk_res = 0; + qtrx->qt_bcount_delta = 0; + qtrx->qt_delbcnt_delta = 0; + + qtrx->qt_rtblk_res = 0; + qtrx->qt_rtblk_res_used = 0; + qtrx->qt_rtbcount_delta = 0; + qtrx->qt_delrtb_delta = 0; + + qtrx->qt_ino_res = 0; + qtrx->qt_ino_res_used = 0; + qtrx->qt_icount_delta = 0; } } } @@ -642,7 +660,8 @@ xfs_trans_unreserve_and_mod_dquots_hook( */ void xfs_trans_unreserve_and_mod_dquots( - struct xfs_trans *tp) + struct xfs_trans *tp, + bool already_locked) { int i, j; struct xfs_dquot *dqp; @@ -671,10 +690,12 @@ xfs_trans_unreserve_and_mod_dquots( * about the number of blocks used field, or deltas. * Also we don't bother to zero the fields. */ - locked = false; + locked = already_locked; if (qtrx->qt_blk_res) { - xfs_dqlock(dqp); - locked = true; + if (!locked) { + xfs_dqlock(dqp); + locked = true; + } dqp->q_blk.reserved -= (xfs_qcnt_t)qtrx->qt_blk_res; } @@ -695,7 +716,7 @@ xfs_trans_unreserve_and_mod_dquots( dqp->q_rtb.reserved -= (xfs_qcnt_t)qtrx->qt_rtblk_res; } - if (locked) + if (locked && !already_locked) xfs_dqunlock(dqp); }

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: don't lose solo dquot update transactions" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 07137e925fa951646325762bda6bd2503dfe64c6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121511-savings-proactive-9581@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 07137e925fa951646325762bda6bd2503dfe64c6 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:36 -0800 Subject: [PATCH] xfs: don't lose solo dquot update transactions Quota counter updates are tracked via incore objects which hang off the xfs_trans object. These changes are then turned into dirty log items in xfs_trans_apply_dquot_deltas just prior to commiting the log items to the CIL. However, updating the incore deltas do not cause XFS_TRANS_DIRTY to be set on the transaction. In other words, a pure quota counter update will be silently discarded if there are no other dirty log items attached to the transaction. This is currently not the case anywhere in the filesystem because quota updates always dirty at least one other metadata item, but a subsequent bug fix will add dquot log item precommits, so we actually need a dirty dquot log item prior to xfs_trans_run_precommits. Also let's not leave a logic bomb. Cc: <stable(a)vger.kernel.org> # v2.6.35 Fixes: 0924378a689ccb ("xfs: split out iclog writing from xfs_trans_commit()") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h index fa1317cc396c..d7565462af3d 100644 --- a/fs/xfs/xfs_quota.h +++ b/fs/xfs/xfs_quota.h @@ -101,7 +101,8 @@ extern void xfs_trans_free_dqinfo(struct xfs_trans *); extern void xfs_trans_mod_dquot_byino(struct xfs_trans *, struct xfs_inode *, uint, int64_t); extern void xfs_trans_apply_dquot_deltas(struct xfs_trans *); -extern void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *); +void xfs_trans_unreserve_and_mod_dquots(struct xfs_trans *tp, + bool already_locked); int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip, int64_t dblocks, int64_t rblocks, bool force); extern int xfs_trans_reserve_quota_bydquots(struct xfs_trans *, @@ -173,7 +174,7 @@ static inline void xfs_trans_mod_dquot_byino(struct xfs_trans *tp, { } #define xfs_trans_apply_dquot_deltas(tp) -#define xfs_trans_unreserve_and_mod_dquots(tp) +#define xfs_trans_unreserve_and_mod_dquots(tp, a) static inline int xfs_trans_reserve_quota_nblks(struct xfs_trans *tp, struct xfs_inode *ip, int64_t dblocks, int64_t rblocks, bool force) diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c index 427a8ba0ab99..4cd25717c9d1 100644 --- a/fs/xfs/xfs_trans.c +++ b/fs/xfs/xfs_trans.c @@ -866,6 +866,7 @@ __xfs_trans_commit( */ if (tp->t_flags & XFS_TRANS_SB_DIRTY) xfs_trans_apply_sb_deltas(tp); + xfs_trans_apply_dquot_deltas(tp); error = xfs_trans_run_precommits(tp); if (error) @@ -894,11 +895,6 @@ __xfs_trans_commit( ASSERT(tp->t_ticket != NULL); - /* - * If we need to update the superblock, then do it now. - */ - xfs_trans_apply_dquot_deltas(tp); - xlog_cil_commit(log, tp, &commit_seq, regrant); xfs_trans_free(tp); @@ -924,7 +920,7 @@ __xfs_trans_commit( * the dqinfo portion to be. All that means is that we have some * (non-persistent) quota reservations that need to be unreserved. */ - xfs_trans_unreserve_and_mod_dquots(tp); + xfs_trans_unreserve_and_mod_dquots(tp, true); if (tp->t_ticket) { if (regrant && !xlog_is_shutdown(log)) xfs_log_ticket_regrant(log, tp->t_ticket); @@ -1018,7 +1014,7 @@ xfs_trans_cancel( } #endif xfs_trans_unreserve_and_mod_sb(tp); - xfs_trans_unreserve_and_mod_dquots(tp); + xfs_trans_unreserve_and_mod_dquots(tp, false); if (tp->t_ticket) { xfs_log_ticket_ungrant(log, tp->t_ticket); diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c index 481ba3dc9f19..713b6d243e56 100644 --- a/fs/xfs/xfs_trans_dquot.c +++ b/fs/xfs/xfs_trans_dquot.c @@ -606,6 +606,24 @@ xfs_trans_apply_dquot_deltas( ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count); ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count); ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count); + + /* + * We've applied the count changes and given back + * whatever reservation we didn't use. Zero out the + * dqtrx fields. + */ + qtrx->qt_blk_res = 0; + qtrx->qt_bcount_delta = 0; + qtrx->qt_delbcnt_delta = 0; + + qtrx->qt_rtblk_res = 0; + qtrx->qt_rtblk_res_used = 0; + qtrx->qt_rtbcount_delta = 0; + qtrx->qt_delrtb_delta = 0; + + qtrx->qt_ino_res = 0; + qtrx->qt_ino_res_used = 0; + qtrx->qt_icount_delta = 0; } } } @@ -642,7 +660,8 @@ xfs_trans_unreserve_and_mod_dquots_hook( */ void xfs_trans_unreserve_and_mod_dquots( - struct xfs_trans *tp) + struct xfs_trans *tp, + bool already_locked) { int i, j; struct xfs_dquot *dqp; @@ -671,10 +690,12 @@ xfs_trans_unreserve_and_mod_dquots( * about the number of blocks used field, or deltas. * Also we don't bother to zero the fields. */ - locked = false; + locked = already_locked; if (qtrx->qt_blk_res) { - xfs_dqlock(dqp); - locked = true; + if (!locked) { + xfs_dqlock(dqp); + locked = true; + } dqp->q_blk.reserved -= (xfs_qcnt_t)qtrx->qt_blk_res; } @@ -695,7 +716,7 @@ xfs_trans_unreserve_and_mod_dquots( dqp->q_rtb.reserved -= (xfs_qcnt_t)qtrx->qt_rtblk_res; } - if (locked) + if (locked && !already_locked) xfs_dqunlock(dqp); }

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: convert quotacheck to attach dquot buffers" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x ca378189fdfa890a4f0622f85ee41b710bbac271 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121557-herring-copartner-3013@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From ca378189fdfa890a4f0622f85ee41b710bbac271 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:39 -0800 Subject: [PATCH] xfs: convert quotacheck to attach dquot buffers Now that we've converted the dquot logging machinery to attach the dquot buffer to the li_buf pointer so that the AIL dqflush doesn't have to allocate or read buffers in a reclaim path, do the same for the quotacheck code so that the reclaim shrinker dqflush call doesn't have to do that either. Cc: <stable(a)vger.kernel.org> # v6.12 Fixes: 903edea6c53f09 ("mm: warn about illegal __GFP_NOFAIL usage in a more appropriate location and manner") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 708fd3358375..f11d475898f2 100644 --- a/fs/xfs/xfs_dquot.c +++ b/fs/xfs/xfs_dquot.c @@ -1285,11 +1285,10 @@ xfs_qm_dqflush_check( * Requires dquot flush lock, will clear the dirty flag, delete the quota log * item from the AIL, and shut down the system if something goes wrong. */ -int +static int xfs_dquot_read_buf( struct xfs_trans *tp, struct xfs_dquot *dqp, - xfs_buf_flags_t xbf_flags, struct xfs_buf **bpp) { struct xfs_mount *mp = dqp->q_mount; @@ -1297,10 +1296,8 @@ xfs_dquot_read_buf( int error; error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp, dqp->q_blkno, - mp->m_quotainfo->qi_dqchunklen, xbf_flags, + mp->m_quotainfo->qi_dqchunklen, 0, &bp, &xfs_dquot_buf_ops); - if (error == -EAGAIN) - return error; if (xfs_metadata_is_sick(error)) xfs_dquot_mark_sick(dqp); if (error) @@ -1334,7 +1331,7 @@ xfs_dquot_attach_buf( struct xfs_buf *bp = NULL; spin_unlock(&qlip->qli_lock); - error = xfs_dquot_read_buf(tp, dqp, 0, &bp); + error = xfs_dquot_read_buf(tp, dqp, &bp); if (error) return error; diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h index c7e80fc90823..c617bac75361 100644 --- a/fs/xfs/xfs_dquot.h +++ b/fs/xfs/xfs_dquot.h @@ -214,8 +214,6 @@ void xfs_dquot_to_disk(struct xfs_disk_dquot *ddqp, struct xfs_dquot *dqp); #define XFS_DQ_IS_DIRTY(dqp) ((dqp)->q_flags & XFS_DQFLAG_DIRTY) void xfs_qm_dqdestroy(struct xfs_dquot *dqp); -int xfs_dquot_read_buf(struct xfs_trans *tp, struct xfs_dquot *dqp, - xfs_buf_flags_t flags, struct xfs_buf **bpp); int xfs_qm_dqflush(struct xfs_dquot *dqp, struct xfs_buf *bp); void xfs_qm_dqunpin_wait(struct xfs_dquot *dqp); void xfs_qm_adjust_dqtimers(struct xfs_dquot *d); diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 7d07d4b5c339..69b70c3e999d 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -148,13 +148,13 @@ xfs_qm_dqpurge( * We don't care about getting disk errors here. We need * to purge this dquot anyway, so we go ahead regardless. */ - error = xfs_dquot_read_buf(NULL, dqp, XBF_TRYLOCK, &bp); + error = xfs_dquot_use_attached_buf(dqp, &bp); if (error == -EAGAIN) { xfs_dqfunlock(dqp); dqp->q_flags &= ~XFS_DQFLAG_FREEING; goto out_unlock; } - if (error) + if (!bp) goto out_funlock; /* @@ -506,8 +506,8 @@ xfs_qm_dquot_isolate( /* we have to drop the LRU lock to flush the dquot */ spin_unlock(&lru->lock); - error = xfs_dquot_read_buf(NULL, dqp, XBF_TRYLOCK, &bp); - if (error) { + error = xfs_dquot_use_attached_buf(dqp, &bp); + if (!bp || error == -EAGAIN) { xfs_dqfunlock(dqp); goto out_unlock_dirty; } @@ -1331,6 +1331,10 @@ xfs_qm_quotacheck_dqadjust( return error; } + error = xfs_dquot_attach_buf(NULL, dqp); + if (error) + return error; + trace_xfs_dqadjust(dqp); /* @@ -1513,9 +1517,13 @@ xfs_qm_flush_one( goto out_unlock; } - error = xfs_dquot_read_buf(NULL, dqp, XBF_TRYLOCK, &bp); + error = xfs_dquot_use_attached_buf(dqp, &bp); if (error) goto out_unlock; + if (!bp) { + error = -EFSCORRUPTED; + goto out_unlock; + } error = xfs_qm_dqflush(dqp, bp); if (!error)

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: fix zero byte checking in the superblock scrubber" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x c004a793e0ec34047c3bd423bcd8966f5fac88dc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121523-ought-imminent-d0a7@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c004a793e0ec34047c3bd423bcd8966f5fac88dc Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:42 -0800 Subject: [PATCH] xfs: fix zero byte checking in the superblock scrubber The logic to check that the region past the end of the superblock is all zeroes is wrong -- we don't want to check only the bytes past the end of the maximally sized ondisk superblock structure as currently defined in xfs_format.h; we want to check the bytes beyond the end of the ondisk as defined by the feature bits. Port the superblock size logic from xfs_repair and then put it to use in xfs_scrub. Cc: <stable(a)vger.kernel.org> # v4.15 Fixes: 21fb4cb1981ef7 ("xfs: scrub the secondary superblocks") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 88063d67cb5f..9f8c312dfd3c 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -59,6 +59,32 @@ xchk_superblock_xref( /* scrub teardown will take care of sc->sa for us */ } +/* + * Calculate the ondisk superblock size in bytes given the feature set of the + * mounted filesystem (aka the primary sb). This is subtlely different from + * the logic in xfs_repair, which computes the size of a secondary sb given the + * featureset listed in the secondary sb. + */ +STATIC size_t +xchk_superblock_ondisk_size( + struct xfs_mount *mp) +{ + if (xfs_has_metadir(mp)) + return offsetofend(struct xfs_dsb, sb_pad); + if (xfs_has_metauuid(mp)) + return offsetofend(struct xfs_dsb, sb_meta_uuid); + if (xfs_has_crc(mp)) + return offsetofend(struct xfs_dsb, sb_lsn); + if (xfs_sb_version_hasmorebits(&mp->m_sb)) + return offsetofend(struct xfs_dsb, sb_bad_features2); + if (xfs_has_logv2(mp)) + return offsetofend(struct xfs_dsb, sb_logsunit); + if (xfs_has_sector(mp)) + return offsetofend(struct xfs_dsb, sb_logsectsize); + /* only support dirv2 or more recent */ + return offsetofend(struct xfs_dsb, sb_dirblklog); +} + /* * Scrub the filesystem superblock. * @@ -75,6 +101,7 @@ xchk_superblock( struct xfs_buf *bp; struct xfs_dsb *sb; struct xfs_perag *pag; + size_t sblen; xfs_agnumber_t agno; uint32_t v2_ok; __be32 features_mask; @@ -388,8 +415,8 @@ xchk_superblock( } /* Everything else must be zero. */ - if (memchr_inv(sb + 1, 0, - BBTOB(bp->b_length) - sizeof(struct xfs_dsb))) + sblen = xchk_superblock_ondisk_size(mp); + if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen)) xchk_block_set_corrupt(sc, bp); xchk_superblock_xref(sc, bp);

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: fix zero byte checking in the superblock scrubber" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x c004a793e0ec34047c3bd423bcd8966f5fac88dc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121523-campus-alike-0706@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c004a793e0ec34047c3bd423bcd8966f5fac88dc Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:42 -0800 Subject: [PATCH] xfs: fix zero byte checking in the superblock scrubber The logic to check that the region past the end of the superblock is all zeroes is wrong -- we don't want to check only the bytes past the end of the maximally sized ondisk superblock structure as currently defined in xfs_format.h; we want to check the bytes beyond the end of the ondisk as defined by the feature bits. Port the superblock size logic from xfs_repair and then put it to use in xfs_scrub. Cc: <stable(a)vger.kernel.org> # v4.15 Fixes: 21fb4cb1981ef7 ("xfs: scrub the secondary superblocks") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 88063d67cb5f..9f8c312dfd3c 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -59,6 +59,32 @@ xchk_superblock_xref( /* scrub teardown will take care of sc->sa for us */ } +/* + * Calculate the ondisk superblock size in bytes given the feature set of the + * mounted filesystem (aka the primary sb). This is subtlely different from + * the logic in xfs_repair, which computes the size of a secondary sb given the + * featureset listed in the secondary sb. + */ +STATIC size_t +xchk_superblock_ondisk_size( + struct xfs_mount *mp) +{ + if (xfs_has_metadir(mp)) + return offsetofend(struct xfs_dsb, sb_pad); + if (xfs_has_metauuid(mp)) + return offsetofend(struct xfs_dsb, sb_meta_uuid); + if (xfs_has_crc(mp)) + return offsetofend(struct xfs_dsb, sb_lsn); + if (xfs_sb_version_hasmorebits(&mp->m_sb)) + return offsetofend(struct xfs_dsb, sb_bad_features2); + if (xfs_has_logv2(mp)) + return offsetofend(struct xfs_dsb, sb_logsunit); + if (xfs_has_sector(mp)) + return offsetofend(struct xfs_dsb, sb_logsectsize); + /* only support dirv2 or more recent */ + return offsetofend(struct xfs_dsb, sb_dirblklog); +} + /* * Scrub the filesystem superblock. * @@ -75,6 +101,7 @@ xchk_superblock( struct xfs_buf *bp; struct xfs_dsb *sb; struct xfs_perag *pag; + size_t sblen; xfs_agnumber_t agno; uint32_t v2_ok; __be32 features_mask; @@ -388,8 +415,8 @@ xchk_superblock( } /* Everything else must be zero. */ - if (memchr_inv(sb + 1, 0, - BBTOB(bp->b_length) - sizeof(struct xfs_dsb))) + sblen = xchk_superblock_ondisk_size(mp); + if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen)) xchk_block_set_corrupt(sc, bp); xchk_superblock_xref(sc, bp);

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: fix zero byte checking in the superblock scrubber" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x c004a793e0ec34047c3bd423bcd8966f5fac88dc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121521-unrefined-numerate-45fa@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c004a793e0ec34047c3bd423bcd8966f5fac88dc Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:42 -0800 Subject: [PATCH] xfs: fix zero byte checking in the superblock scrubber The logic to check that the region past the end of the superblock is all zeroes is wrong -- we don't want to check only the bytes past the end of the maximally sized ondisk superblock structure as currently defined in xfs_format.h; we want to check the bytes beyond the end of the ondisk as defined by the feature bits. Port the superblock size logic from xfs_repair and then put it to use in xfs_scrub. Cc: <stable(a)vger.kernel.org> # v4.15 Fixes: 21fb4cb1981ef7 ("xfs: scrub the secondary superblocks") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 88063d67cb5f..9f8c312dfd3c 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -59,6 +59,32 @@ xchk_superblock_xref( /* scrub teardown will take care of sc->sa for us */ } +/* + * Calculate the ondisk superblock size in bytes given the feature set of the + * mounted filesystem (aka the primary sb). This is subtlely different from + * the logic in xfs_repair, which computes the size of a secondary sb given the + * featureset listed in the secondary sb. + */ +STATIC size_t +xchk_superblock_ondisk_size( + struct xfs_mount *mp) +{ + if (xfs_has_metadir(mp)) + return offsetofend(struct xfs_dsb, sb_pad); + if (xfs_has_metauuid(mp)) + return offsetofend(struct xfs_dsb, sb_meta_uuid); + if (xfs_has_crc(mp)) + return offsetofend(struct xfs_dsb, sb_lsn); + if (xfs_sb_version_hasmorebits(&mp->m_sb)) + return offsetofend(struct xfs_dsb, sb_bad_features2); + if (xfs_has_logv2(mp)) + return offsetofend(struct xfs_dsb, sb_logsunit); + if (xfs_has_sector(mp)) + return offsetofend(struct xfs_dsb, sb_logsectsize); + /* only support dirv2 or more recent */ + return offsetofend(struct xfs_dsb, sb_dirblklog); +} + /* * Scrub the filesystem superblock. * @@ -75,6 +101,7 @@ xchk_superblock( struct xfs_buf *bp; struct xfs_dsb *sb; struct xfs_perag *pag; + size_t sblen; xfs_agnumber_t agno; uint32_t v2_ok; __be32 features_mask; @@ -388,8 +415,8 @@ xchk_superblock( } /* Everything else must be zero. */ - if (memchr_inv(sb + 1, 0, - BBTOB(bp->b_length) - sizeof(struct xfs_dsb))) + sblen = xchk_superblock_ondisk_size(mp); + if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen)) xchk_block_set_corrupt(sc, bp); xchk_superblock_xref(sc, bp);

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: fix zero byte checking in the superblock scrubber" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x c004a793e0ec34047c3bd423bcd8966f5fac88dc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121522-parcel-pebble-9775@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c004a793e0ec34047c3bd423bcd8966f5fac88dc Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:42 -0800 Subject: [PATCH] xfs: fix zero byte checking in the superblock scrubber The logic to check that the region past the end of the superblock is all zeroes is wrong -- we don't want to check only the bytes past the end of the maximally sized ondisk superblock structure as currently defined in xfs_format.h; we want to check the bytes beyond the end of the ondisk as defined by the feature bits. Port the superblock size logic from xfs_repair and then put it to use in xfs_scrub. Cc: <stable(a)vger.kernel.org> # v4.15 Fixes: 21fb4cb1981ef7 ("xfs: scrub the secondary superblocks") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 88063d67cb5f..9f8c312dfd3c 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -59,6 +59,32 @@ xchk_superblock_xref( /* scrub teardown will take care of sc->sa for us */ } +/* + * Calculate the ondisk superblock size in bytes given the feature set of the + * mounted filesystem (aka the primary sb). This is subtlely different from + * the logic in xfs_repair, which computes the size of a secondary sb given the + * featureset listed in the secondary sb. + */ +STATIC size_t +xchk_superblock_ondisk_size( + struct xfs_mount *mp) +{ + if (xfs_has_metadir(mp)) + return offsetofend(struct xfs_dsb, sb_pad); + if (xfs_has_metauuid(mp)) + return offsetofend(struct xfs_dsb, sb_meta_uuid); + if (xfs_has_crc(mp)) + return offsetofend(struct xfs_dsb, sb_lsn); + if (xfs_sb_version_hasmorebits(&mp->m_sb)) + return offsetofend(struct xfs_dsb, sb_bad_features2); + if (xfs_has_logv2(mp)) + return offsetofend(struct xfs_dsb, sb_logsunit); + if (xfs_has_sector(mp)) + return offsetofend(struct xfs_dsb, sb_logsectsize); + /* only support dirv2 or more recent */ + return offsetofend(struct xfs_dsb, sb_dirblklog); +} + /* * Scrub the filesystem superblock. * @@ -75,6 +101,7 @@ xchk_superblock( struct xfs_buf *bp; struct xfs_dsb *sb; struct xfs_perag *pag; + size_t sblen; xfs_agnumber_t agno; uint32_t v2_ok; __be32 features_mask; @@ -388,8 +415,8 @@ xchk_superblock( } /* Everything else must be zero. */ - if (memchr_inv(sb + 1, 0, - BBTOB(bp->b_length) - sizeof(struct xfs_dsb))) + sblen = xchk_superblock_ondisk_size(mp); + if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen)) xchk_block_set_corrupt(sc, bp); xchk_superblock_xref(sc, bp);

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: fix zero byte checking in the superblock scrubber" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x c004a793e0ec34047c3bd423bcd8966f5fac88dc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121521-squeegee-certified-9462@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c004a793e0ec34047c3bd423bcd8966f5fac88dc Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:42 -0800 Subject: [PATCH] xfs: fix zero byte checking in the superblock scrubber The logic to check that the region past the end of the superblock is all zeroes is wrong -- we don't want to check only the bytes past the end of the maximally sized ondisk superblock structure as currently defined in xfs_format.h; we want to check the bytes beyond the end of the ondisk as defined by the feature bits. Port the superblock size logic from xfs_repair and then put it to use in xfs_scrub. Cc: <stable(a)vger.kernel.org> # v4.15 Fixes: 21fb4cb1981ef7 ("xfs: scrub the secondary superblocks") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 88063d67cb5f..9f8c312dfd3c 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -59,6 +59,32 @@ xchk_superblock_xref( /* scrub teardown will take care of sc->sa for us */ } +/* + * Calculate the ondisk superblock size in bytes given the feature set of the + * mounted filesystem (aka the primary sb). This is subtlely different from + * the logic in xfs_repair, which computes the size of a secondary sb given the + * featureset listed in the secondary sb. + */ +STATIC size_t +xchk_superblock_ondisk_size( + struct xfs_mount *mp) +{ + if (xfs_has_metadir(mp)) + return offsetofend(struct xfs_dsb, sb_pad); + if (xfs_has_metauuid(mp)) + return offsetofend(struct xfs_dsb, sb_meta_uuid); + if (xfs_has_crc(mp)) + return offsetofend(struct xfs_dsb, sb_lsn); + if (xfs_sb_version_hasmorebits(&mp->m_sb)) + return offsetofend(struct xfs_dsb, sb_bad_features2); + if (xfs_has_logv2(mp)) + return offsetofend(struct xfs_dsb, sb_logsunit); + if (xfs_has_sector(mp)) + return offsetofend(struct xfs_dsb, sb_logsectsize); + /* only support dirv2 or more recent */ + return offsetofend(struct xfs_dsb, sb_dirblklog); +} + /* * Scrub the filesystem superblock. * @@ -75,6 +101,7 @@ xchk_superblock( struct xfs_buf *bp; struct xfs_dsb *sb; struct xfs_perag *pag; + size_t sblen; xfs_agnumber_t agno; uint32_t v2_ok; __be32 features_mask; @@ -388,8 +415,8 @@ xchk_superblock( } /* Everything else must be zero. */ - if (memchr_inv(sb + 1, 0, - BBTOB(bp->b_length) - sizeof(struct xfs_dsb))) + sblen = xchk_superblock_ondisk_size(mp); + if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen)) xchk_block_set_corrupt(sc, bp); xchk_superblock_xref(sc, bp);

1 month, 3 weeks

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FAILED: patch "[PATCH] xfs: fix zero byte checking in the superblock scrubber" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x c004a793e0ec34047c3bd423bcd8966f5fac88dc # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2024121520-distract-perish-f190@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c004a793e0ec34047c3bd423bcd8966f5fac88dc Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" <djwong(a)kernel.org> Date: Mon, 2 Dec 2024 10:57:42 -0800 Subject: [PATCH] xfs: fix zero byte checking in the superblock scrubber The logic to check that the region past the end of the superblock is all zeroes is wrong -- we don't want to check only the bytes past the end of the maximally sized ondisk superblock structure as currently defined in xfs_format.h; we want to check the bytes beyond the end of the ondisk as defined by the feature bits. Port the superblock size logic from xfs_repair and then put it to use in xfs_scrub. Cc: <stable(a)vger.kernel.org> # v4.15 Fixes: 21fb4cb1981ef7 ("xfs: scrub the secondary superblocks") Signed-off-by: "Darrick J. Wong" <djwong(a)kernel.org> Reviewed-by: Christoph Hellwig <hch(a)lst.de> diff --git a/fs/xfs/scrub/agheader.c b/fs/xfs/scrub/agheader.c index 88063d67cb5f..9f8c312dfd3c 100644 --- a/fs/xfs/scrub/agheader.c +++ b/fs/xfs/scrub/agheader.c @@ -59,6 +59,32 @@ xchk_superblock_xref( /* scrub teardown will take care of sc->sa for us */ } +/* + * Calculate the ondisk superblock size in bytes given the feature set of the + * mounted filesystem (aka the primary sb). This is subtlely different from + * the logic in xfs_repair, which computes the size of a secondary sb given the + * featureset listed in the secondary sb. + */ +STATIC size_t +xchk_superblock_ondisk_size( + struct xfs_mount *mp) +{ + if (xfs_has_metadir(mp)) + return offsetofend(struct xfs_dsb, sb_pad); + if (xfs_has_metauuid(mp)) + return offsetofend(struct xfs_dsb, sb_meta_uuid); + if (xfs_has_crc(mp)) + return offsetofend(struct xfs_dsb, sb_lsn); + if (xfs_sb_version_hasmorebits(&mp->m_sb)) + return offsetofend(struct xfs_dsb, sb_bad_features2); + if (xfs_has_logv2(mp)) + return offsetofend(struct xfs_dsb, sb_logsunit); + if (xfs_has_sector(mp)) + return offsetofend(struct xfs_dsb, sb_logsectsize); + /* only support dirv2 or more recent */ + return offsetofend(struct xfs_dsb, sb_dirblklog); +} + /* * Scrub the filesystem superblock. * @@ -75,6 +101,7 @@ xchk_superblock( struct xfs_buf *bp; struct xfs_dsb *sb; struct xfs_perag *pag; + size_t sblen; xfs_agnumber_t agno; uint32_t v2_ok; __be32 features_mask; @@ -388,8 +415,8 @@ xchk_superblock( } /* Everything else must be zero. */ - if (memchr_inv(sb + 1, 0, - BBTOB(bp->b_length) - sizeof(struct xfs_dsb))) + sblen = xchk_superblock_ondisk_size(mp); + if (memchr_inv((char *)sb + sblen, 0, BBTOB(bp->b_length) - sblen)) xchk_block_set_corrupt(sc, bp); xchk_superblock_xref(sc, bp);

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