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[PATCH OLK-6.6] libceph: reset sparse-read state in osd_fault()
by Jinjiang Tu 05 Mar '26

05 Mar '26

From: Sam Edwards <cfsworks(a)gmail.com> stable inclusion from stable-v6.6.121 commit 90a60fe61908afa0eaf7f8fcf1421b9b50e5f7ff category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13688 CVE: CVE-2026-23136 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 11194b416ef95012c2cfe5f546d71af07b639e93 upstream. When a fault occurs, the connection is abandoned, reestablished, and any pending operations are retried. The OSD client tracks the progress of a sparse-read reply using a separate state machine, largely independent of the messenger's state. If a connection is lost mid-payload or the sparse-read state machine returns an error, the sparse-read state is not reset. The OSD client will then interpret the beginning of a new reply as the continuation of the old one. If this makes the sparse-read machinery enter a failure state, it may never recover, producing loops like: libceph: [0] got 0 extents libceph: data len 142248331 != extent len 0 libceph: osd0 (1)...:6801 socket error on read libceph: data len 142248331 != extent len 0 libceph: osd0 (1)...:6801 socket error on read Therefore, reset the sparse-read state in osd_fault(), ensuring retries start from a clean state. Cc: stable(a)vger.kernel.org Fixes: f628d7999727 ("libceph: add sparse read support to OSD client") Signed-off-by: Sam Edwards <CFSworks(a)gmail.com> Reviewed-by: Ilya Dryomov <idryomov(a)gmail.com> Signed-off-by: Ilya Dryomov <idryomov(a)gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yuan can <yuancan(a)huawei.com> Signed-off-by: Jinjiang Tu <tujinjiang(a)huawei.com> --- net/ceph/osd_client.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 866cef26ce2a..a86ba8b78575 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -4313,6 +4313,9 @@ static void osd_fault(struct ceph_connection *con) goto out_unlock; } + osd->o_sparse_op_idx = -1; + ceph_init_sparse_read(&osd->o_sparse_read); + if (!reopen_osd(osd)) kick_osd_requests(osd); maybe_request_map(osdc); -- 2.43.0

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[PATCH OLK-5.10 0/2] bpf selftest cross compile fixes
by Pu Lehui 05 Mar '26

05 Mar '26

Björn Töpel (1): selftests/bpf: Pass target triple to get_sys_includes macro Jean-Philippe Brucker (1): selftests/bpf: Enable cross-building tools/testing/selftests/bpf/Makefile | 58 +++++++++++++++++++++------- 1 file changed, 43 insertions(+), 15 deletions(-) -- 2.34.1

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[PATCH OLK-6.6 0/2] CVE-2026-23177
by Fanhua Li 05 Mar '26

05 Mar '26

*** BLURB HERE *** Kairui Song (2): mm/shmem, swap: fix race of truncate and swap entry split mm, shmem: prevent infinite loop on truncate race mm/shmem.c | 54 +++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 41 insertions(+), 13 deletions(-) -- 2.43.0

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[PATCH OLK-5.10 0/2] bpf selftest cross compile fixes
by Pu Lehui 05 Mar '26

05 Mar '26

Björn Töpel (1): selftests/bpf: Pass target triple to get_sys_includes macro Jean-Philippe Brucker (1): selftests/bpf: Enable cross-building tools/testing/selftests/bpf/Makefile | 58 +++++++++++++++++++++------- 1 file changed, 43 insertions(+), 15 deletions(-) -- 2.34.1

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[PATCH openEuler-1.0-LTS] net/sched: Reserve TC_H_INGRESS (TC_H_CLSACT) for ingress (clsact) Qdiscs
by Dong Chenchen 05 Mar '26

05 Mar '26

From: Peilin Ye <peilin.ye(a)bytedance.com> mainline inclusion from mainline-v6.4-rc5 commit f85fa45d4a9408d98c46c8fa45ba2e3b2f4bf219 category: bugfix bugzilla: https://atomgit.com/openeuler/kernel/issues/7193 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Currently it is possible to add e.g. an HTB Qdisc under ffff:fff1 (TC_H_INGRESS, TC_H_CLSACT): $ ip link add name ifb0 type ifb $ tc qdisc add dev ifb0 parent ffff:fff1 htb $ tc qdisc add dev ifb0 clsact Error: Exclusivity flag on, cannot modify. $ drgn ... >>> ifb0 = netdev_get_by_name(prog, "ifb0") >>> qdisc = ifb0.ingress_queue.qdisc_sleeping >>> print(qdisc.ops.id.string_().decode()) htb >>> qdisc.flags.value_() # TCQ_F_INGRESS 2 Only allow ingress and clsact Qdiscs under ffff:fff1. Return -EINVAL for everything else. Make TCQ_F_INGRESS a static flag of ingress and clsact Qdiscs. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Fixes: 1f211a1b929c ("net, sched: add clsact qdisc") Tested-by: Pedro Tammela <pctammela(a)mojatatu.com> Acked-by: Jamal Hadi Salim <jhs(a)mojatatu.com> Reviewed-by: Jamal Hadi Salim <jhs(a)mojatatu.com> Reviewed-by: Vlad Buslov <vladbu(a)nvidia.com> Signed-off-by: Peilin Ye <peilin.ye(a)bytedance.com> Signed-off-by: Jakub Kicinski <kuba(a)kernel.org> Conflicts: net/sched/sch_api.c [commit 8ecc7c8a1c16 is not backport] Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- net/sched/sch_api.c | 7 ++++++- net/sched/sch_ingress.c | 4 ++-- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 2ea9e7753cb0..51f987df0ac7 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -1145,7 +1145,12 @@ static struct Qdisc *qdisc_create(struct net_device *dev, sch->parent = parent; if (handle == TC_H_INGRESS) { - sch->flags |= TCQ_F_INGRESS; + if (!(sch->flags & TCQ_F_INGRESS)) { + NL_SET_ERR_MSG(extack, + "Specified parent ID is reserved for ingress and clsact Qdiscs"); + err = -EINVAL; + goto err_out3; + } handle = TC_H_MAKE(TC_H_INGRESS, 0); lockdep_set_class(qdisc_lock(sch), &qdisc_rx_lock); } else { diff --git a/net/sched/sch_ingress.c b/net/sched/sch_ingress.c index ce3f55259d0d..238dacf41c22 100644 --- a/net/sched/sch_ingress.c +++ b/net/sched/sch_ingress.c @@ -130,7 +130,7 @@ static struct Qdisc_ops ingress_qdisc_ops __read_mostly = { .cl_ops = &ingress_class_ops, .id = "ingress", .priv_size = sizeof(struct ingress_sched_data), - .static_flags = TCQ_F_CPUSTATS, + .static_flags = TCQ_F_INGRESS | TCQ_F_CPUSTATS, .init = ingress_init, .destroy = ingress_destroy, .dump = ingress_dump, @@ -262,7 +262,7 @@ static struct Qdisc_ops clsact_qdisc_ops __read_mostly = { .cl_ops = &clsact_class_ops, .id = "clsact", .priv_size = sizeof(struct clsact_sched_data), - .static_flags = TCQ_F_CPUSTATS, + .static_flags = TCQ_F_INGRESS | TCQ_F_CPUSTATS, .init = clsact_init, .destroy = clsact_destroy, .dump = ingress_dump, -- 2.25.1

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[PATCH OLK-6.6] bonding: fix use-after-free due to enslave fail after slave array update
by Dong Chenchen 05 Mar '26

05 Mar '26

From: Nikolay Aleksandrov <razor(a)blackwall.org> mainline inclusion from mainline-v6.19-rc8 commit e9acda52fd2ee0cdca332f996da7a95c5fd25294 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13721 CVE: CVE-2026-23171 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- Fix a use-after-free which happens due to enslave failure after the new slave has been added to the array. Since the new slave can be used for Tx immediately, we can use it after it has been freed by the enslave error cleanup path which frees the allocated slave memory. Slave update array is supposed to be called last when further enslave failures are not expected. Move it after xdp setup to avoid any problems. It is very easy to reproduce the problem with a simple xdp_pass prog: ip l add bond1 type bond mode balance-xor ip l set bond1 up ip l set dev bond1 xdp object xdp_pass.o sec xdp_pass ip l add dumdum type dummy Then run in parallel: while :; do ip l set dumdum master bond1 1>/dev/null 2>&1; done; mausezahn bond1 -a own -b rand -A rand -B 1.1.1.1 -c 0 -t tcp "dp=1-1023, flags=syn" The crash happens almost immediately: [ 605.602850] Oops: general protection fault, probably for non-canonical address 0xe0e6fc2460000137: 0000 [#1] SMP KASAN NOPTI [ 605.602916] KASAN: maybe wild-memory-access in range [0x07380123000009b8-0x07380123000009bf] [ 605.602946] CPU: 0 UID: 0 PID: 2445 Comm: mausezahn Kdump: loaded Tainted: G B 6.19.0-rc6+ #21 PREEMPT(voluntary) [ 605.602979] Tainted: [B]=BAD_PAGE [ 605.602998] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 605.603032] RIP: 0010:netdev_core_pick_tx+0xcd/0x210 [ 605.603063] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 3e 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 30 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 25 01 00 00 49 8b 45 30 4c 89 e2 48 89 ee 48 89 [ 605.603111] RSP: 0018:ffff88817b9af348 EFLAGS: 00010213 [ 605.603145] RAX: dffffc0000000000 RBX: ffff88817d28b420 RCX: 0000000000000000 [ 605.603172] RDX: 00e7002460000137 RSI: 0000000000000008 RDI: 07380123000009be [ 605.603199] RBP: ffff88817b541a00 R08: 0000000000000001 R09: fffffbfff3ed8c0c [ 605.603226] R10: ffffffff9f6c6067 R11: 0000000000000001 R12: 0000000000000000 [ 605.603253] R13: 073801230000098e R14: ffff88817d28b448 R15: ffff88817b541a84 [ 605.603286] FS: 00007f6570ef67c0(0000) GS:ffff888221dfa000(0000) knlGS:0000000000000000 [ 605.603319] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 605.603343] CR2: 00007f65712fae40 CR3: 000000011371b000 CR4: 0000000000350ef0 [ 605.603373] Call Trace: [ 605.603392] <TASK> [ 605.603410] __dev_queue_xmit+0x448/0x32a0 [ 605.603434] ? __pfx_vprintk_emit+0x10/0x10 [ 605.603461] ? __pfx_vprintk_emit+0x10/0x10 [ 605.603484] ? __pfx___dev_queue_xmit+0x10/0x10 [ 605.603507] ? bond_start_xmit+0xbfb/0xc20 [bonding] [ 605.603546] ? _printk+0xcb/0x100 [ 605.603566] ? __pfx__printk+0x10/0x10 [ 605.603589] ? bond_start_xmit+0xbfb/0xc20 [bonding] [ 605.603627] ? add_taint+0x5e/0x70 [ 605.603648] ? add_taint+0x2a/0x70 [ 605.603670] ? end_report.cold+0x51/0x75 [ 605.603693] ? bond_start_xmit+0xbfb/0xc20 [bonding] [ 605.603731] bond_start_xmit+0x623/0xc20 [bonding] Fixes: 9e2ee5c7e7c3 ("net, bonding: Add XDP support to the bonding driver") Signed-off-by: Nikolay Aleksandrov <razor(a)blackwall.org> Reported-by: Chen Zhen <chenzhen126(a)huawei.com> Closes: https://lore.kernel.org/netdev/fae17c21-4940-5605-85b2-1d5e17342358@huawei.… CC: Jussi Maki <joamaki(a)gmail.com> CC: Daniel Borkmann <daniel(a)iogearbox.net> Acked-by: Daniel Borkmann <daniel(a)iogearbox.net> Link: https://patch.msgid.link/20260123120659.571187-1-razor@blackwall.org Signed-off-by: Paolo Abeni <pabeni(a)redhat.com> Conflicts: drivers/net/bonding/bond_main.c [commit e0caeb24f538 is not backport] Signed-off-by: Dong Chenchen <dongchenchen2(a)huawei.com> --- drivers/net/bonding/bond_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 6dcb4e963044..172fdca5ce80 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2296,9 +2296,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, unblock_netpoll_tx(); } - if (bond_mode_can_use_xmit_hash(bond)) - bond_update_slave_arr(bond, NULL); - if (!slave_dev->netdev_ops->ndo_bpf || !slave_dev->netdev_ops->ndo_xdp_xmit) { if (bond->xdp_prog) { @@ -2332,6 +2329,9 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, bpf_prog_inc(bond->xdp_prog); } + if (bond_mode_can_use_xmit_hash(bond)) + bond_update_slave_arr(bond, NULL); + bond_xdp_set_features(bond_dev); slave_info(bond_dev, slave_dev, "Enslaving as %s interface with %s link\n", -- 2.25.1

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[PATCH OLK-6.6 0/2] net: Fix CVE-2026-23204
by Dong Chenchen 05 Mar '26

05 Mar '26

Fix CVE-2026-23204 Eric Dumazet (2): net: add skb_header_pointer_careful() helper net/sched: cls_u32: use skb_header_pointer_careful() include/linux/skbuff.h | 12 ++++++++++++ net/sched/cls_u32.c | 13 ++++++------- 2 files changed, 18 insertions(+), 7 deletions(-) -- 2.25.1

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[PATCH v3 openEuler-26.09 0/4] Introduce xsched dmem
by Liu Kai 05 Mar '26

05 Mar '26

Introduce xsched dmem Alexander Pavlenko (4): xsched/dmem: set max region size of xsched dmem root group to physical XPU memory size xsched/dmem: init xsched dmem region xsched/dmem: introduce xsched_dmem_alloc() xsched/dmem: introduce xsched_dmem_free() include/linux/xsched.h | 16 ++++ include/uapi/linux/xcu_vstream.h | 8 ++ kernel/cgroup/dmem.c | 5 ++ kernel/xsched/Makefile | 1 + kernel/xsched/core.c | 4 + kernel/xsched/dmem.c | 135 +++++++++++++++++++++++++++++++ kernel/xsched/vstream.c | 42 ++++++++++ 7 files changed, 211 insertions(+) create mode 100644 kernel/xsched/dmem.c -- 2.34.1

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[PATCH OLK-6.6] regmap: Fix race condition in hwspinlock irqsave routine
by Lin Ruifeng 05 Mar '26

05 Mar '26

From: Cheng-Yu Lee <cylee12(a)realtek.com> stable inclusion from stable-v6.6.122 commit 24f31be6ad70537fd7706269d99c92cade465a09 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13604 CVE: CVE-2026-23071 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- [ Upstream commit 4b58aac989c1e3fafb1c68a733811859df388250 ] Previously, the address of the shared member '&map->spinlock_flags' was passed directly to 'hwspin_lock_timeout_irqsave'. This creates a race condition where multiple contexts contending for the lock could overwrite the shared flags variable, potentially corrupting the state for the current lock owner. Fix this by using a local stack variable 'flags' to store the IRQ state temporarily. Fixes: 8698b9364710 ("regmap: Add hardware spinlock support") Signed-off-by: Cheng-Yu Lee <cylee12(a)realtek.com> Co-developed-by: Yu-Chun Lin <eleanor.lin(a)realtek.com> Signed-off-by: Yu-Chun Lin <eleanor.lin(a)realtek.com> Link: https://patch.msgid.link/20260109032633.8732-1-eleanor.lin@realtek.com Signed-off-by: Mark Brown <broonie(a)kernel.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> Signed-off-by: Lin Ruifeng <linruifeng4(a)huawei.com> --- drivers/base/regmap/regmap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 1209e01f8c7f..17c0c4412270 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -408,9 +408,11 @@ static void regmap_lock_hwlock_irq(void *__map) static void regmap_lock_hwlock_irqsave(void *__map) { struct regmap *map = __map; + unsigned long flags = 0; hwspin_lock_timeout_irqsave(map->hwlock, UINT_MAX, - &map->spinlock_flags); + &flags); + map->spinlock_flags = flags; } static void regmap_unlock_hwlock(void *__map) -- 2.43.0

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[PATCH OLK-6.6] ceph: fix oops due to invalid pointer for kfree() in parse_longname()
by Pan Taixi 05 Mar '26

05 Mar '26

From: Daniel Vogelbacher <daniel(a)chaospixel.com> mainline inclusion from mainline-v6.19 commit bc8dedae022ce3058659c3addef3ec4b41d15e00 category: bugfix bugzilla: https://atomgit.com/src-openeuler/kernel/issues/13836/ CVE: CVE-2026-23201 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… -------------------------------- This fixes a kernel oops when reading ceph snapshot directories (.snap), for example by simply running `ls /mnt/my_ceph/.snap`. The variable str is guarded by __free(kfree), but advanced by one for skipping the initial '_' in snapshot names. Thus, kfree() is called with an invalid pointer. This patch removes the need for advancing the pointer so kfree() is called with correct memory pointer. Steps to reproduce: 1. Create snapshots on a cephfs volume (I've 63 snaps in my testcase) 2. Add cephfs mount to fstab $ echo "samba-fileserver@.files=/volumes/datapool/stuff/3461082b-ecc9-4e82-8549-3fd2590d3fb6 /mnt/test/stuff ceph acl,noatime,_netdev 0 0" >> /etc/fstab 3. Reboot the system $ systemctl reboot 4. Check if it's really mounted $ mount | grep stuff 5. List snapshots (expected 63 snapshots on my system) $ ls /mnt/test/stuff/.snap Now ls hangs forever and the kernel log shows the oops. Cc: stable(a)vger.kernel.org Fixes: 101841c38346 ("[ceph] parse_longname(): strrchr() expects NUL-terminated string") Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220807 Suggested-by: Helge Deller <deller(a)gmx.de> Signed-off-by: Daniel Vogelbacher <daniel(a)chaospixel.com> Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko(a)ibm.com> Signed-off-by: Ilya Dryomov <idryomov(a)gmail.com> Conflicts: fs/ceph/crypto.c [Context conflicts due to unmmerged commit 38d46409c463 ("ceph: print cluster fsid and client global_id in all debug logs")] Signed-off-by: Pan Taixi <pantaixi1(a)huawei.com> --- fs/ceph/crypto.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/ceph/crypto.c b/fs/ceph/crypto.c index fa2aaf1d30f8..b0337c4b1bd7 100644 --- a/fs/ceph/crypto.c +++ b/fs/ceph/crypto.c @@ -215,12 +215,13 @@ static struct inode *parse_longname(const struct inode *parent, struct ceph_vino vino = { .snap = CEPH_NOSNAP }; char *name_end, *inode_number; int ret = -EIO; - /* NUL-terminate */ - char *str __free(kfree) = kmemdup_nul(name, *name_len, GFP_KERNEL); + /* Snapshot name must start with an underscore */ + if (*name_len <= 0 || name[0] != '_') + return ERR_PTR(-EIO); + /* Skip initial '_' and NUL-terminate */ + char *str __free(kfree) = kmemdup_nul(name + 1, *name_len - 1, GFP_KERNEL); if (!str) return ERR_PTR(-ENOMEM); - /* Skip initial '_' */ - str++; name_end = strrchr(str, '_'); if (!name_end) { dout("Failed to parse long snapshot name: %s\n", str); -- 2.34.1

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