June 2023 - Kernel - mailweb.openeuler.org

[PATCH OLK-5.10] tcp: prohibit TCP_REPAIR_OPTIONS if data was already sent
by Lu Wei 06 Jun '23

06 Jun '23

stable inclusion from stable-v5.10.155 commit 02f8dfee7580b65449a67baa65cc2da4e5ffc473 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5ZG7O Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 0c175da7b0378445f5ef53904247cfbfb87e0b78 ] If setsockopt with option name of TCP_REPAIR_OPTIONS and opt_code of TCPOPT_SACK_PERM is called to enable sack after data is sent and dupacks are received , it will trigger a warning in function tcp_verify_left_out() as follows: ============================================ WARNING: CPU: 8 PID: 0 at net/ipv4/tcp_input.c:2132 tcp_timeout_mark_lost+0x154/0x160 tcp_enter_loss+0x2b/0x290 tcp_retransmit_timer+0x50b/0x640 tcp_write_timer_handler+0x1c8/0x340 tcp_write_timer+0xe5/0x140 call_timer_fn+0x3a/0x1b0 __run_timers.part.0+0x1bf/0x2d0 run_timer_softirq+0x43/0xb0 __do_softirq+0xfd/0x373 __irq_exit_rcu+0xf6/0x140 The warning is caused in the following steps: 1. a socket named socketA is created 2. socketA enters repair mode without build a connection 3. socketA calls connect() and its state is changed to TCP_ESTABLISHED directly 4. socketA leaves repair mode 5. socketA calls sendmsg() to send data, packets_out and sack_outs(dup ack receives) increase 6. socketA enters repair mode again 7. socketA calls setsockopt with TCPOPT_SACK_PERM to enable sack 8. retransmit timer expires, it calls tcp_timeout_mark_lost(), lost_out increases 9. sack_outs + lost_out > packets_out triggers since lost_out and sack_outs increase repeatly In function tcp_timeout_mark_lost(), tp->sacked_out will be cleared if Step7 not happen and the warning will not be triggered. As suggested by Denis and Eric, TCP_REPAIR_OPTIONS should be prohibited if data was already sent. socket-tcp tests in CRIU has been tested as follows: $ sudo ./test/zdtm.py run -t zdtm/static/socket-tcp* --keep-going \ --ignore-taint socket-tcp* represent all socket-tcp tests in test/zdtm/static/. Fixes: b139ba4e90dc ("tcp: Repair connection-time negotiated parameters") Signed-off-by: Lu Wei <luwei32(a)huawei.com> Reviewed-by: Eric Dumazet <edumazet(a)google.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Lu Wei <luwei32(a)huawei.com> --- net/ipv4/tcp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index e7ac3555d798..f009d78460b4 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3295,7 +3295,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level, int optname, case TCP_REPAIR_OPTIONS: if (!tp->repair) err = -EINVAL; - else if (sk->sk_state == TCP_ESTABLISHED) + else if (sk->sk_state == TCP_ESTABLISHED && !tp->bytes_sent) err = tcp_repair_options_est(sk, optval, optlen); else err = -EPERM; -- 2.31.1

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[PATCH OLK-5.10 1/2] mtd: ubi: wl: Fix a couple of kernel-doc issues
by ZhaoLong Wang 06 Jun '23

06 Jun '23

From: Lee Jones <lee.jones(a)linaro.org> mainline inclusion from mainline-v5.11-rc1 commit ab4e4de9fd8b469823a645f05f2c142e9270b012 category: bugfix bugzilla: 188441 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Fixes the following W=1 kernel build warning(s): drivers/mtd/ubi/wl.c:584: warning: Function parameter or member 'nested' not described in 'schedule_erase' drivers/mtd/ubi/wl.c:1075: warning: Excess function parameter 'shutdown' description in '__erase_worker' Cc: Richard Weinberger <richard(a)nod.at> Cc: Miquel Raynal <miquel.raynal(a)bootlin.com> Cc: Vignesh Raghavendra <vigneshr(a)ti.com> Cc: linux-mtd(a)lists.infradead.org Signed-off-by: Lee Jones <lee.jones(a)linaro.org> Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-13-lee.jones@linar… Signed-off-by: ZhaoLong Wang <wangzhaolong1(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> --- drivers/mtd/ubi/wl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 6da09263e0b9..2ee0e60c43c2 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -575,6 +575,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk, * @vol_id: the volume ID that last used this PEB * @lnum: the last used logical eraseblock number for the PEB * @torture: if the physical eraseblock has to be tortured + * @nested: denotes whether the work_sem is already held in read mode * * This function returns zero in case of success and a %-ENOMEM in case of * failure. @@ -1066,8 +1067,6 @@ static int ensure_wear_leveling(struct ubi_device *ubi, int nested) * __erase_worker - physical eraseblock erase worker function. * @ubi: UBI device description object * @wl_wrk: the work object - * @shutdown: non-zero if the worker has to free memory and exit - * because the WL sub-system is shutting down * * This function erases a physical eraseblock and perform torture testing if * needed. It also takes care about marking the physical eraseblock bad if -- 2.31.1

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退订
by 嚄薅鋽 06 Jun '23

06 Jun '23

退订

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[PATCH OLK-5.10 0/4] icost bugfix
by linan666＠huaweicloud.com 06 Jun '23

06 Jun '23

From: Li Nan <linan122(a)huawei.com> This patch series fix iocost bug. Li Nan (1): blk-iocost: fix UAF in ioc_pd_free Yu Kuai (3): blk-iocost: track whether iocg is still online blk-iocost: don't throttle bio if iocg is offlined blk-iocost: dispatch all throttled bio in ioc_pd_offline block/blk-iocost.c | 57 ++++++++++++++++++++++++++++++++++++---------- 1 file changed, 45 insertions(+), 12 deletions(-) -- 2.39.2

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[PATCH OLK-5.10] hikey9xx: Fixed incorrect use of kfree to free sreg
by ZhaoLong Wang 06 Jun '23

06 Jun '23

hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6GS86 CVE: NA -------------------------------- When memory allocated by using the devm_kmalloc(). the matching release function should use the devm_kfree() function instead of the kfree() function. @sreg allocated: hi6421_spmi_regulator_probe hi6421_spmi_regulator_probe_ldo @sreg freed: hi6421_spmi_regulator_remove Signed-off-by: ZhaoLong Wang <wangzhaolong1(a)huawei.com> --- drivers/staging/hikey9xx/hi6421v600-regulator.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/hikey9xx/hi6421v600-regulator.c b/drivers/staging/hikey9xx/hi6421v600-regulator.c index 614b03c9ddfb..63204e460f53 100644 --- a/drivers/staging/hikey9xx/hi6421v600-regulator.c +++ b/drivers/staging/hikey9xx/hi6421v600-regulator.c @@ -452,7 +452,7 @@ static int hi6421_spmi_regulator_remove(struct platform_device *pdev) if (rdev->desc->volt_table) devm_kfree(&pdev->dev, (unsigned int *)rdev->desc->volt_table); - kfree(sreg); + devm_kfree(&pdev->dev, sreg); return 0; } -- 2.31.1

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[PATCH OLK-5.10 1/2] mtd: ubi: wl: Fix a couple of kernel-doc issues
by ZhaoLong Wang 06 Jun '23

06 Jun '23

From: Lee Jones <lee.jones(a)linaro.org> mainline inclusion from mainline-v5.11-rc1 commit ab4e4de9fd8b469823a645f05f2c142e9270b012 category: bugfix bugzilla: 188441 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Fixes the following W=1 kernel build warning(s): drivers/mtd/ubi/wl.c:584: warning: Function parameter or member 'nested' not described in 'schedule_erase' drivers/mtd/ubi/wl.c:1075: warning: Excess function parameter 'shutdown' description in '__erase_worker' Cc: Richard Weinberger <richard(a)nod.at> Cc: Miquel Raynal <miquel.raynal(a)bootlin.com> Cc: Vignesh Raghavendra <vigneshr(a)ti.com> Cc: linux-mtd(a)lists.infradead.org Signed-off-by: Lee Jones <lee.jones(a)linaro.org> Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com> Link: https://lore.kernel.org/linux-mtd/20201109182206.3037326-13-lee.jones@linar… Signed-off-by: ZhaoLong Wang <wangzhaolong1(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> --- drivers/mtd/ubi/wl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 6da09263e0b9..2ee0e60c43c2 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c @@ -575,6 +575,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk, * @vol_id: the volume ID that last used this PEB * @lnum: the last used logical eraseblock number for the PEB * @torture: if the physical eraseblock has to be tortured + * @nested: denotes whether the work_sem is already held in read mode * * This function returns zero in case of success and a %-ENOMEM in case of * failure. @@ -1066,8 +1067,6 @@ static int ensure_wear_leveling(struct ubi_device *ubi, int nested) * __erase_worker - physical eraseblock erase worker function. * @ubi: UBI device description object * @wl_wrk: the work object - * @shutdown: non-zero if the worker has to free memory and exit - * because the WL sub-system is shutting down * * This function erases a physical eraseblock and perform torture testing if * needed. It also takes care about marking the physical eraseblock bad if -- 2.31.1

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[PATCH openEuler-22.03-LTS 1/2] xfs: reorder iunlink remove operation in xfs_ifree
by Long Li 06 Jun '23

06 Jun '23

From: Dave Chinner <dchinner(a)redhat.com> stable inclusion from stable-v5.10.145 commit a6bfdc157f853004c47e93357303f3626afaa872 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I685FC CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=… -------------------------------- commit 9a5280b312e2e7898b6397b2ca3cfd03f67d7be1 upstream. [backport for 5.10.y] The O_TMPFILE creation implementation creates a specific order of operations for inode allocation/freeing and unlinked list modification. Currently both are serialised by the AGI, so the order doesn't strictly matter as long as the are both in the same transaction. However, if we want to move the unlinked list insertions largely out from under the AGI lock, then we have to be concerned about the order in which we do unlinked list modification operations. O_TMPFILE creation tells us this order is inode allocation/free, then unlinked list modification. Change xfs_ifree() to use this same ordering on unlinked list removal. This way we always guarantee that when we enter the iunlinked list removal code from this path, we already have the AGI locked and we don't have to worry about lock nesting AGI reads inside unlink list locks because it's already locked and attached to the transaction. We can do this safely as the inode freeing and unlinked list removal are done in the same transaction and hence are atomic operations with respect to log recovery. Reported-by: Frank Hofmann <fhofmann(a)cloudflare.com> Fixes: 298f7bec503f ("xfs: pin inode backing buffer to the inode log item") Signed-off-by: Dave Chinner <dchinner(a)redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong(a)oracle.com> Signed-off-by: Dave Chinner <david(a)fromorbit.com> Signed-off-by: Amir Goldstein <amir73il(a)gmail.com> Acked-by: Darrick J. Wong <djwong(a)kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Long Li <leo.lilong(a)huawei.com> --- fs/xfs/xfs_inode.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c index bbf6def9429e..cd8409044b9d 100644 --- a/fs/xfs/xfs_inode.c +++ b/fs/xfs/xfs_inode.c @@ -2725,14 +2725,13 @@ xfs_ifree_cluster( } /* - * This is called to return an inode to the inode free list. - * The inode should already be truncated to 0 length and have - * no pages associated with it. This routine also assumes that - * the inode is already a part of the transaction. + * This is called to return an inode to the inode free list. The inode should + * already be truncated to 0 length and have no pages associated with it. This + * routine also assumes that the inode is already a part of the transaction. * - * The on-disk copy of the inode will have been added to the list - * of unlinked inodes in the AGI. We need to remove the inode from - * that list atomically with respect to freeing it here. + * The on-disk copy of the inode will have been added to the list of unlinked + * inodes in the AGI. We need to remove the inode from that list atomically with + * respect to freeing it here. */ int xfs_ifree( @@ -2750,13 +2749,16 @@ xfs_ifree( ASSERT(ip->i_d.di_nblocks == 0); /* - * Pull the on-disk inode from the AGI unlinked list. + * Free the inode first so that we guarantee that the AGI lock is going + * to be taken before we remove the inode from the unlinked list. This + * makes the AGI lock -> unlinked list modification order the same as + * used in O_TMPFILE creation. */ - error = xfs_iunlink_remove(tp, ip); + error = xfs_difree(tp, ip->i_ino, &xic); if (error) return error; - error = xfs_difree(tp, ip->i_ino, &xic); + error = xfs_iunlink_remove(tp, ip); if (error) return error; -- 2.31.1

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[PATCH OLK-5.10] dm: add disk before alloc dax
by Li Lingfeng 06 Jun '23

06 Jun '23

Offering: HULK hulk inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I78SWJ CVE: NA ------------------------------- In dm_create(), alloc_dev() may trigger panic if alloc_dax() fail since del_gendisk() will be called with add_disk() wasn't called before. Call add_disk() before alloc_dax() to avoid it. Signed-off-by: Li Lingfeng <lilingfeng3(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> --- drivers/md/dm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 335eef5c3c05..1cb2a84f2403 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1883,6 +1883,8 @@ static struct mapped_device *alloc_dev(int minor) md->disk->private_data = md; sprintf(md->disk->disk_name, "dm-%d", minor); + add_disk_no_queue_reg(md->disk); + if (IS_ENABLED(CONFIG_DAX_DRIVER)) { md->dax_dev = alloc_dax(md, md->disk->disk_name, &dm_dax_ops, 0); @@ -1892,7 +1894,6 @@ static struct mapped_device *alloc_dev(int minor) } } - add_disk_no_queue_reg(md->disk); format_dev_t(md->name, MKDEV(_major, minor)); md->wq = alloc_workqueue("kdmflush", WQ_MEM_RECLAIM, 0); -- 2.31.1

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[PATCH OLK-5.10 00/18] xfs: rework feature flags
by Long Li 06 Jun '23

06 Jun '23

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[PATCH OLK-5.10 1/3] xfs: fix the problem of mount failure caused by not refreshing mp->m_sb
by Zhihao Cheng 06 Jun '23

06 Jun '23

From: Wu Guanghao <wuguanghao3(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I77NBB -------------------------------- After testing xfs_growfs + fsstress + fault injection, the following stack appeared when mounting the filesystem: [ 149.902032] XFS (loop0): xfs_buf_map_verify: daddr 0x200001 out of range, EOFS 0x200000 [ 149.902072] WARNING: CPU: 12 PID: 3045 at fs/xfs/xfs_buf.c:535 xfs_buf_get_map+0x5ae/0x650 [xfs] ... [ 149.902473] xfs_buf_read_map+0x59/0x330 [xfs] [ 149.902621] ? xlog_recover_items_pass2+0x55/0xd0 [xfs] [ 149.902809] xlog_recover_buf_commit_pass2+0xff/0x640 [xfs] [ 149.902959] ? xlog_recover_items_pass2+0x55/0xd0 [xfs] [ 149.903104] xlog_recover_items_pass2+0x55/0xd0 [xfs] [ 149.903247] xlog_recover_commit_trans+0x2e0/0x330 [xfs] [ 149.903390] xlog_recovery_process_trans+0x8e/0xf0 [xfs] [ 149.903531] xlog_recover_process_data+0x9c/0x130 [xfs] [ 149.903687] xlog_do_recovery_pass+0x3cc/0x5d0 [xfs] [ 149.903843] xlog_do_log_recovery+0x5c/0x80 [xfs] [ 149.903984] xlog_do_recover+0x33/0x1c0 [xfs] [ 149.904125] xlog_recover+0xdd/0x190 [xfs] [ 149.904265] xfs_log_mount+0x125/0x2f0 [xfs] [ 149.904410] xfs_mountfs+0x41a/0x910 [xfs] [ 149.904558] ? __pfx_xfs_fstrm_free_func+0x10/0x10 [xfs] [ 149.904725] xfs_fs_fill_super+0x4b7/0x940 [xfs] [ 149.904873] ? __pfx_xfs_fs_fill_super+0x10/0x10 [xfs] [ 149.905016] get_tree_bdev+0x19a/0x280 [ 149.905020] vfs_get_tree+0x29/0xd0 [ 149.905023] path_mount+0x69e/0x9b0 [ 149.905026] do_mount+0x7d/0xa0 [ 149.905029] __x64_sys_mount+0xdc/0x100 [ 149.905032] do_syscall_64+0x3e/0x90 [ 149.905035] entry_SYSCALL_64_after_hwframe+0x72/0xdc The trigger process is as follows: 1. Growfs size from 0x200000 to 0x300000 2. Using the space range of 0x200000~0x300000 3. The above operations have only been written to the log area on disk 4. Fault injection and shutdown filesystem 5. Mount the filesystem and replay the log about growfs, but only modify the superblock buffer without modifying the mp->m_sb structure in memory 6. Continuing the log replay, at this point we are replaying operation 2, then it was discovered that the blocks used more than mp->m_sb.sb_dblocks Therefore, during log replay, if there are any modifications made to the superblock, we should refresh the information recorded in the mp->m_sb. Signed-off-by: Wu Guanghao <wuguanghao3(a)huawei.com> Signed-off-by: Zhihao Cheng <chengzhihao1(a)huawei.com> --- fs/xfs/xfs_buf_item_recover.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/fs/xfs/xfs_buf_item_recover.c b/fs/xfs/xfs_buf_item_recover.c index d892125eb022..d78060a262bd 100644 --- a/fs/xfs/xfs_buf_item_recover.c +++ b/fs/xfs/xfs_buf_item_recover.c @@ -22,6 +22,8 @@ #include "xfs_inode.h" #include "xfs_dir2.h" #include "xfs_quota.h" +#include "xfs_sb.h" +#include "xfs_ag.h" /* * This is the number of entries in the l_buf_cancel_table used during @@ -969,6 +971,28 @@ xlog_recover_buf_commit_pass2( goto out_release; } else { xlog_recover_do_reg_buffer(mp, item, bp, buf_f, current_lsn); + /* + * If the superblock buffer is modified, we also need to modify the + * content of the mp. + */ + if (bp->b_maps[0].bm_bn == XFS_SB_DADDR && bp->b_ops) { + struct xfs_dsb *sb = bp->b_addr; + + bp->b_ops->verify_write(bp); + error = bp->b_error; + if (error) + goto out_release; + + if (be32_to_cpu(sb->sb_agcount) > mp->m_sb.sb_agcount) { + error = xfs_initialize_perag(mp, + be32_to_cpu(sb->sb_agcount), + &mp->m_maxagi); + if (error) + goto out_release; + } + + xfs_sb_from_disk(&mp->m_sb, sb); + } } /* -- 2.31.1

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