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[PATCH openEuler-1.0-LTS 1/2] lightnvm: disable the subsystem
by Yongqiang Liu 06 Sep '22

06 Sep '22

From: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> stable inclusion from stable-v5.10.114 commit 549209caabc89f2877ad5f62d11fca5c052e0e8f category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I5O6A9 CVE: CVE-2022-2991 --------------------------- In commit 9ea9b9c48387 ("remove the lightnvm subsystem") the lightnvm subsystem was removed as there is no hardware in the wild for it, and the code is known to have problems. This should also be disabled for older LTS kernels as well to prevent anyone from accidentally using it. Cc: Christoph Hellwig <hch(a)lst.de> Cc: Matias Bjørling <mb(a)lightnvm.io> Cc: Javier González <javier(a)javigon.com> Cc: Jens Axboe <axboe(a)kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Guo Mengqi <guomengqi3(a)huawei.com> Reviewed-by: Weilong Chen <chenweilong(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yongqiang Liu <liuyongqiang13(a)huawei.com> --- drivers/lightnvm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig index 439bf90d084d..1db33cb28859 100644 --- a/drivers/lightnvm/Kconfig +++ b/drivers/lightnvm/Kconfig @@ -4,7 +4,7 @@ menuconfig NVM bool "Open-Channel SSD target support" - depends on BLOCK && PCI + depends on BLOCK && PCI && BROKEN select BLK_DEV_NVME help Say Y here to get to enable Open-channel SSDs. -- 2.25.1

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[PATCH openEuler-1.0-LTS 1/6] configfs: return -ENAMETOOLONG earlier in configfs_lookup
by Yongqiang Liu 06 Sep '22

06 Sep '22

From: Christoph Hellwig <hch(a)lst.de> mainline inclusion from mainline-v5.15-rc1 commit 417b962ddeca2b70eb72d28c87541bdad4e234f8 category: bugfix bugzilla: 187567, https://gitee.com/openeuler/kernel/issues/I5PK1G CVE: NA -------------------------------- Just like most other file systems: get the simple checks out of the way first. Signed-off-by: Christoph Hellwig <hch(a)lst.de> Signed-off-by: Zhihao Cheng <chengzhihao1(a)huawei.com> Reviewed-by: Zhang Yi <yi.zhang(a)huawei.com> Signed-off-by: Yongqiang Liu <liuyongqiang13(a)huawei.com> --- fs/configfs/dir.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c index 9b43611e1bb3..ff298a9baa0a 100644 --- a/fs/configfs/dir.c +++ b/fs/configfs/dir.c @@ -483,6 +483,9 @@ static struct dentry * configfs_lookup(struct inode *dir, int found = 0; int err; + if (dentry->d_name.len > NAME_MAX) + return ERR_PTR(-ENAMETOOLONG); + /* * Fake invisibility if dir belongs to a group/default groups hierarchy * being attached @@ -513,8 +516,6 @@ static struct dentry * configfs_lookup(struct inode *dir, * If it doesn't exist and it isn't a NOT_PINNED item, * it must be negative. */ - if (dentry->d_name.len > NAME_MAX) - return ERR_PTR(-ENAMETOOLONG); d_add(dentry, NULL); return NULL; } -- 2.25.1

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[PATCH openEuler-5.10-LTS 01/12] tty: drivers/tty/, stop using tty_schedule_flip()
by Zheng Zengkai 06 Sep '22

06 Sep '22

From: Jiri Slaby <jslaby(a)suse.cz> stable inclusion from stable-v5.10.134 commit 6a81848252869d929354a879e08807c932444929 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I5A5Y1 CVE: CVE-2022-1462 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id… -------------------------------- commit 5f6a85158ccacc3f09744b3aafe8b11ab3b6c6f6 upstream. Since commit a9c3f68f3cd8d (tty: Fix low_latency BUG) in 2014, tty_flip_buffer_push() is only a wrapper to tty_schedule_flip(). We are going to remove the latter (as it is used less), so call the former in drivers/tty/. Cc: Vladimir Zapolskiy <vz(a)mleia.com> Reviewed-by: Johan Hovold <johan(a)kernel.org> Signed-off-by: Jiri Slaby <jslaby(a)suse.cz> Link: https://lore.kernel.org/r/20211122111648.30379-2-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Signed-off-by: Yi Yang <yiyang13(a)huawei.com> Reviewed-by: Wang Weiyang <wangweiyang2(a)huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- drivers/tty/cyclades.c | 6 +++--- drivers/tty/goldfish.c | 2 +- drivers/tty/moxa.c | 4 ++-- drivers/tty/serial/lpc32xx_hs.c | 2 +- drivers/tty/vt/keyboard.c | 6 +++--- drivers/tty/vt/vt.c | 2 +- 6 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c index 097266342e5e..4bcaab250676 100644 --- a/drivers/tty/cyclades.c +++ b/drivers/tty/cyclades.c @@ -556,7 +556,7 @@ static void cyy_chip_rx(struct cyclades_card *cinfo, int chip, } info->idle_stats.recv_idle = jiffies; } - tty_schedule_flip(port); + tty_flip_buffer_push(port); /* end of service */ cyy_writeb(info, CyRIR, save_xir & 0x3f); @@ -996,7 +996,7 @@ static void cyz_handle_rx(struct cyclades_port *info) mod_timer(&info->rx_full_timer, jiffies + 1); #endif info->idle_stats.recv_idle = jiffies; - tty_schedule_flip(&info->port); + tty_flip_buffer_push(&info->port); /* Update rx_get */ cy_writel(&buf_ctrl->rx_get, new_rx_get); @@ -1172,7 +1172,7 @@ static void cyz_handle_cmd(struct cyclades_card *cinfo) if (delta_count) wake_up_interruptible(&info->port.delta_msr_wait); if (special_count) - tty_schedule_flip(&info->port); + tty_flip_buffer_push(&info->port); } } diff --git a/drivers/tty/goldfish.c b/drivers/tty/goldfish.c index c8c5cdfc5e19..ed0f3a7b8fe5 100644 --- a/drivers/tty/goldfish.c +++ b/drivers/tty/goldfish.c @@ -151,7 +151,7 @@ static irqreturn_t goldfish_tty_interrupt(int irq, void *dev_id) address = (unsigned long)(void *)buf; goldfish_tty_rw(qtty, address, count, 0); - tty_schedule_flip(&qtty->port); + tty_flip_buffer_push(&qtty->port); return IRQ_HANDLED; } diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c index f9f14104bd2c..d6528f3bb9b9 100644 --- a/drivers/tty/moxa.c +++ b/drivers/tty/moxa.c @@ -1385,7 +1385,7 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle, if (inited && !tty_throttled(tty) && MoxaPortRxQueue(p) > 0) { /* RX */ MoxaPortReadData(p); - tty_schedule_flip(&p->port); + tty_flip_buffer_push(&p->port); } } else { clear_bit(EMPTYWAIT, &p->statusflags); @@ -1410,7 +1410,7 @@ static int moxa_poll_port(struct moxa_port *p, unsigned int handle, if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ tty_insert_flip_char(&p->port, 0, TTY_BREAK); - tty_schedule_flip(&p->port); + tty_flip_buffer_push(&p->port); } if (intr & IntrLine) diff --git a/drivers/tty/serial/lpc32xx_hs.c b/drivers/tty/serial/lpc32xx_hs.c index b5898c932036..a9802308ff60 100644 --- a/drivers/tty/serial/lpc32xx_hs.c +++ b/drivers/tty/serial/lpc32xx_hs.c @@ -344,7 +344,7 @@ static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id) LPC32XX_HSUART_IIR(port->membase)); port->icount.overrun++; tty_insert_flip_char(tport, 0, TTY_OVERRUN); - tty_schedule_flip(tport); + tty_flip_buffer_push(tport); } /* Data received? */ diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c index 78acc270e39a..aa0026a9839c 100644 --- a/drivers/tty/vt/keyboard.c +++ b/drivers/tty/vt/keyboard.c @@ -311,7 +311,7 @@ int kbd_rate(struct kbd_repeat *rpt) static void put_queue(struct vc_data *vc, int ch) { tty_insert_flip_char(&vc->port, ch, 0); - tty_schedule_flip(&vc->port); + tty_flip_buffer_push(&vc->port); } static void puts_queue(struct vc_data *vc, char *cp) @@ -320,7 +320,7 @@ static void puts_queue(struct vc_data *vc, char *cp) tty_insert_flip_char(&vc->port, *cp, 0); cp++; } - tty_schedule_flip(&vc->port); + tty_flip_buffer_push(&vc->port); } static void applkey(struct vc_data *vc, int key, char mode) @@ -565,7 +565,7 @@ static void fn_inc_console(struct vc_data *vc) static void fn_send_intr(struct vc_data *vc) { tty_insert_flip_char(&vc->port, 0, TTY_BREAK); - tty_schedule_flip(&vc->port); + tty_flip_buffer_push(&vc->port); } static void fn_scroll_forw(struct vc_data *vc) diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index 0a6336d54a65..30fc2a60c352 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -1834,7 +1834,7 @@ static void csi_m(struct vc_data *vc) static void respond_string(const char *p, size_t len, struct tty_port *port) { tty_insert_flip_string(port, p, len); - tty_schedule_flip(port); + tty_flip_buffer_push(port); } static void cursor_report(struct vc_data *vc, struct tty_struct *tty) -- 2.20.1

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[PATCH openEuler-5.10-LTS 00/44] Backport 5.10.120 LTS
by Zheng Zengkai 06 Sep '22

06 Sep '22

Backport 5.10.120 LTS patches from upstream. git cherry-pick v5.10.119..v5.10.120~1 -s Already merged(-8): ea62d169b6e7 netfilter: nf_tables: disallow non-stateful expression in sets earlier 57d01bcae704 io_uring: don't re-import iovecs from callbacks 8adb751d294e io_uring: fix using under-expanded iters 72464fd2b4b7 xfs: fix the forward progress assertion in xfs_iwalk_run_callbacks a9e7f19a5577 xfs: fix an ABBA deadlock in xfs_renam 2728d95c6c95 xfs: Fix CIL throttle hang when CIL space used going backwards c0aff1faf66b netfilter: nf_tables: sanitize nft_set_desc_concat_parse() 3d8fc6e28f32 KVM: x86: avoid calling x86 emulator without a decoded instruction Skiped(-1)： 45d97f70da4d xfs: show the proper user quota options Context conflict: 630192aa4523 lib/crypto: add prompts back to crypto libraries 8df42bcd364c dm verity: set DM_TARGET_IMMUTABLE feature flag KABI fixed(+1): pipe: fix kabi for poll_usage in struct pipe_inode_info Total patches: 52 - 8 - 1 + 1= 44 Akira Yokosawa (1): docs: submitting-patches: Fix crossref to 'The canonical patch format' Al Viro (1): percpu_ref_init(): clean ->percpu_count_ref on failure Alex Elder (1): net: ipa: compute proper aggregation limit Chuck Lever (1): NFSD: Fix possible sleep during nfsd4_release_lockowner() Dan Carpenter (1): dm integrity: fix error code in dm_integrity_ctr() Darrick J. Wong (1): xfs: detect overflows in bmbt records David Howells (1): pipe: Fix missing lock in pipe_resize_ring() Fabio Estevam (1): crypto: caam - fix i.MX6SX entropy delay value Florian Westphal (1): netfilter: conntrack: re-fetch conntrack after insertion Gustavo A. R. Silva (1): drm/i915: Fix -Wstringop-overflow warning in call to intel_read_wm_latency() IotaHydrae (1): pinctrl: sunxi: fix f1c100s uart2 function Joel Stanley (1): net: ftgmac100: Disable hardware checksum on AST2600 Jonathan Bakker (1): ARM: dts: s5pv210: Correct interrupt name for bluetooth in Aries Justin M. Forbes (1): lib/crypto: add prompts back to crypto libraries Kuniyuki Iwashima (1): pipe: make poll_usage boolean and annotate its access Lin Ma (1): nfc: pn533: Fix buggy cleanup order Liu Jian (1): bpf: Enlarge offset check value to INT_MAX in bpf_skb_{load,store}_bytes Marek Maślanka (1): HID: multitouch: Add support for Google Whiskers Touchpad Mariusz Tkaczyk (1): raid5: introduce MD_BROKEN Mika Westerberg (1): i2c: ismt: Provide a DMA buffer for Interrupt Cause Logging Mikulas Patocka (2): dm crypt: make printing of the key constant-time dm stats: add cond_resched when looping over entries Miri Korenblit (1): cfg80211: set custom regdomain after wiphy registration Nicolai Stange (4): crypto: drbg - prepare for more fine-grained tracking of seeding state crypto: drbg - track whether DRBG was seeded with !rng_is_initialized() crypto: drbg - move dynamic ->reseed_threshold adjustments to __drbg_seed() crypto: drbg - make reseeding from get_random_bytes() synchronous Paolo Bonzini (1): x86, kvm: use correct GFP flags for preemption disabled Piyush Malgujar (1): drivers: i2c: thunderx: Allow driver to work with ACPI defined TWSI controllers Sarthak Kukreti (1): dm verity: set DM_TARGET_IMMUTABLE feature flag Sean Christopherson (1): x86/kvm: Alloc dummy async #PF token outside of raw spinlock Stefan Mahnke-Hartmann (1): tpm: Fix buffer access in tpm2_get_tpm_pt() Stephen Brennan (1): assoc_array: Fix BUG_ON during garbage collect Steven Rostedt (1): Bluetooth: hci_qca: Use del_timer_sync() before freeing Sultan Alsawaf (1): zsmalloc: fix races between asynchronous zspage free and page migration Tadeusz Struk (1): exfat: check if cluster num is valid Tao Jin (1): HID: multitouch: add quirks to enable Lenovo X12 trackpoint Thomas Bartschies (1): net: af_key: check encryption module availability consistency Trond Myklebust (1): NFS: Memory allocation failures are not server fatal errors Vitaly Chikunov (1): crypto: ecrdsa - Fix incorrect use of vli_cmp Xiaomeng Tong (1): KVM: PPC: Book3S HV: fix incorrect NULL check on list iterator Xiu Jianfeng (1): tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm_probe() Yuntao Wang (1): bpf: Fix potential array overflow in bpf_trampoline_get_progs() Zheng Zengkai (1): pipe: fix kabi for poll_usage in struct pipe_inode_info Documentation/process/submitting-patches.rst | 2 +- arch/arm/boot/dts/s5pv210-aries.dtsi | 2 +- arch/powerpc/kvm/book3s_hv_uvmem.c | 8 +- arch/x86/kernel/kvm.c | 41 ++++--- crypto/Kconfig | 2 - crypto/drbg.c | 110 +++++++----------- crypto/ecrdsa.c | 8 +- drivers/bluetooth/hci_qca.c | 4 +- drivers/char/random.c | 2 - drivers/char/tpm/tpm2-cmd.c | 11 +- drivers/char/tpm/tpm_ibmvtpm.c | 1 + drivers/crypto/caam/ctrl.c | 18 +++ drivers/gpu/drm/i915/intel_pm.c | 2 +- drivers/hid/hid-ids.h | 1 + drivers/hid/hid-multitouch.c | 9 ++ drivers/i2c/busses/i2c-ismt.c | 14 +++ drivers/i2c/busses/i2c-thunderx-pcidrv.c | 1 + drivers/md/dm-crypt.c | 14 ++- drivers/md/dm-integrity.c | 2 - drivers/md/dm-stats.c | 8 ++ drivers/md/dm-verity-target.c | 1 + drivers/md/raid5.c | 47 ++++---- drivers/net/ethernet/faraday/ftgmac100.c | 5 + drivers/net/ipa/ipa_endpoint.c | 4 +- drivers/nfc/pn533/pn533.c | 5 +- drivers/pinctrl/sunxi/pinctrl-suniv-f1c100s.c | 2 +- fs/exfat/balloc.c | 8 +- fs/exfat/exfat_fs.h | 8 ++ fs/exfat/fatent.c | 8 -- fs/nfs/internal.h | 1 + fs/nfsd/nfs4state.c | 12 +- fs/pipe.c | 33 +++--- fs/xfs/libxfs/xfs_bmap.c | 5 + include/crypto/drbg.h | 10 +- include/linux/pipe_fs_i.h | 2 +- include/net/netfilter/nf_conntrack_core.h | 7 +- kernel/bpf/trampoline.c | 18 ++- lib/Kconfig | 2 + lib/assoc_array.c | 8 ++ lib/crypto/Kconfig | 17 ++- lib/percpu-refcount.c | 1 + mm/zsmalloc.c | 37 +++++- net/core/filter.c | 4 +- net/key/af_key.c | 6 +- net/wireless/core.c | 8 +- net/wireless/reg.c | 1 + 46 files changed, 328 insertions(+), 192 deletions(-) -- 2.20.1

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[PATCH openEuler-1.0-LTS 1/3] af_key: Do not call xfrm_probe_algs in parallel
by Yongqiang Liu 05 Sep '22

05 Sep '22

From: Herbert Xu <herbert(a)gondor.apana.org.au> mainline inclusion from mainline-v6.0-rc3 commit ba953a9d89a00c078b85f4b190bc1dde66fe16b5 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I5OPA4 CVE: CVE-2022-3028 -------------------------------- When namespace support was added to xfrm/afkey, it caused the previously single-threaded call to xfrm_probe_algs to become multi-threaded. This is buggy and needs to be fixed with a mutex. Reported-by: Abhishek Shah <abhishek.shah(a)columbia.edu> Fixes: 283bc9f35bbb ("xfrm: Namespacify xfrm state/policy locks") Signed-off-by: Herbert Xu <herbert(a)gondor.apana.org.au> Signed-off-by: Steffen Klassert <steffen.klassert(a)secunet.com> Signed-off-by: Xu Jia <xujia39(a)huawei.com> Reviewed-by: Wei Yongjun <weiyongjun1(a)huawei.com> Reviewed-by: Wang Weiyang <wangweiyang2(a)huawei.com> Signed-off-by: Yongqiang Liu <liuyongqiang13(a)huawei.com> --- net/key/af_key.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/key/af_key.c b/net/key/af_key.c index 0107cc10c4a2..23470b0d84aa 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -1707,9 +1707,12 @@ static int pfkey_register(struct sock *sk, struct sk_buff *skb, const struct sad pfk->registered |= (1<<hdr->sadb_msg_satype); } + mutex_lock(&pfkey_mutex); xfrm_probe_algs(); supp_skb = compose_sadb_supported(hdr, GFP_KERNEL | __GFP_ZERO); + mutex_unlock(&pfkey_mutex); + if (!supp_skb) { if (hdr->sadb_msg_satype != SADB_SATYPE_UNSPEC) pfk->registered &= ~(1<<hdr->sadb_msg_satype); -- 2.25.1

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[PATCH openEuler-5.10 01/10] Revert "NFS: Use of mapping_set_error() results in spurious errors"
by Zheng Zengkai 01 Sep '22

01 Sep '22

From: Luo Meng <luomeng12(a)huawei.com> hulk inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5KK4D CVE: NA -------------------------------- This reverts commit f4f117026d586db38c025cd95b6094ff8de326df. 7f3945b4aab5 (NFS: Use of mapping_set_error() results in spurious errors) delete mappint->flags because of 67dd23f9e6fb (nfs: ensure correct writeback errors are returned on close()). However 67dd23f9e6fb has been reverted, use mappint->flags to return error. Signed-off-by: Luo Meng <luomeng12(a)huawei.com> Reviewed-by: Zhang Xiaoxu <zhangxiaoxu5(a)huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai(a)huawei.com> --- fs/nfs/write.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 5d07799513a6..e8f6ce88b1fb 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -310,10 +310,7 @@ static void nfs_mapping_set_error(struct page *page, int error) struct address_space *mapping = page_file_mapping(page); SetPageError(page); - filemap_set_wb_err(mapping, error); - if (mapping->host) - errseq_set(&mapping->host->i_sb->s_wb_err, - error == -ENOSPC ? -ENOSPC : -EIO); + mapping_set_error(mapping, error); nfs_set_pageerror(mapping); } -- 2.20.1

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openEuler Kernel SIG例会
by openEuler conference 01 Sep '22

01 Sep '22

您好！ Kernel SIG 邀请您参加 2022-09-02 14:00 召开的Zoom会议(自动录制) 会议主题：openEuler Kernel SIG例会会议内容： 1.AMD EPYC Gen4 Genoa平台openEuler-22.09支持简介 2.申威openEuler-22.09内核特性介绍会议链接：https://us06web.zoom.us/j/85985675927?pwd=ZXl4K3hzZWRpTUIvUWR6RkJJalpPdz09 会议纪要：https://etherpad.openeuler.org/p/Kernel-meetings 温馨提醒：建议接入会议后修改参会人的姓名，也可以使用您在gitee.com的ID 更多资讯尽在：https://openeuler.org/zh/ Hello! openEuler Kernel SIG invites you to attend the Zoom conference(auto recording) will be held at 2022-09-02 14:00, The subject of the conference is openEuler Kernel SIG例会, Summary: 1.AMD EPYC Gen4 Genoa平台openEuler-22.09支持简介 2.申威openEuler-22.09内核特性介绍 You can join the meeting at https://us06web.zoom.us/j/85985675927?pwd=ZXl4K3hzZWRpTUIvUWR6RkJJalpPdz09. Add topics at https://etherpad.openeuler.org/p/Kernel-meetings. Note: You are advised to change the participant name after joining the conference or use your ID at gitee.com. More information: https://openeuler.org/en/

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[PATCH openEuler-1.0-LTS 1/3] net: usb: ax88179_178a: fix packet alignment padding
by Yongqiang Liu 01 Sep '22

01 Sep '22

From: Jeremy Kerr <jk(a)ozlabs.org> stable inclusion from stable-v4.19.131 commit c191f7cf369c0090fdbeff0b6782d5eaa3a179d2 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I5NYS6 CVE: CVE-2022-2964 --------------------------- [ Upstream commit e869e7a17798d85829fa7d4f9bbe1eebd4b2d3f6 ] Using a AX88179 device (0b95:1790), I see two bytes of appended data on every RX packet. For example, this 48-byte ping, using 0xff as a payload byte: 04:20:22.528472 IP 192.168.1.1 > 192.168.1.2: ICMP echo request, id 2447, seq 1, length 64 0x0000: 000a cd35 ea50 000a cd35 ea4f 0800 4500 0x0010: 0054 c116 4000 4001 f63e c0a8 0101 c0a8 0x0020: 0102 0800 b633 098f 0001 87ea cd5e 0000 0x0030: 0000 dcf2 0600 0000 0000 ffff ffff ffff 0x0040: ffff ffff ffff ffff ffff ffff ffff ffff 0x0050: ffff ffff ffff ffff ffff ffff ffff ffff 0x0060: ffff 961f Those last two bytes - 96 1f - aren't part of the original packet. In the ax88179 RX path, the usbnet rx_fixup function trims a 2-byte 'alignment pseudo header' from the start of the packet, and sets the length from a per-packet field populated by hardware. It looks like that length field *includes* the 2-byte header; the current driver assumes that it's excluded. This change trims the 2-byte alignment header after we've set the packet length, so the resulting packet length is correct. While we're moving the comment around, this also fixes the spelling of 'pseudo'. Signed-off-by: Jeremy Kerr <jk(a)ozlabs.org> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> (cherry picked from commit c191f7cf369c0090fdbeff0b6782d5eaa3a179d2) Signed-off-by: Liu Jian <liujian56(a)huawei.com> Reviewed-by: Wei Yongjun <weiyongjun1(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yongqiang Liu <liuyongqiang13(a)huawei.com> --- drivers/net/usb/ax88179_178a.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c index 2207f7a7d1ff..8455f72007b9 100644 --- a/drivers/net/usb/ax88179_178a.c +++ b/drivers/net/usb/ax88179_178a.c @@ -1400,10 +1400,10 @@ static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb) } if (pkt_cnt == 0) { - /* Skip IP alignment psudo header */ - skb_pull(skb, 2); skb->len = pkt_len; - skb_set_tail_pointer(skb, pkt_len); + /* Skip IP alignment pseudo header */ + skb_pull(skb, 2); + skb_set_tail_pointer(skb, skb->len); skb->truesize = pkt_len + sizeof(struct sk_buff); ax88179_rx_checksum(skb, pkt_hdr); return 1; @@ -1412,8 +1412,9 @@ static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb) ax_skb = skb_clone(skb, GFP_ATOMIC); if (ax_skb) { ax_skb->len = pkt_len; - ax_skb->data = skb->data + 2; - skb_set_tail_pointer(ax_skb, pkt_len); + /* Skip IP alignment pseudo header */ + skb_pull(ax_skb, 2); + skb_set_tail_pointer(ax_skb, ax_skb->len); ax_skb->truesize = pkt_len + sizeof(struct sk_buff); ax88179_rx_checksum(ax_skb, pkt_hdr); usbnet_skb_return(dev, ax_skb); -- 2.25.1

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[PATCH openEuler-22.09 v5 0/3] samples: bpf: Add sample BMC for Redis
by Zheng Zengkai 31 Aug '22

31 Aug '22

BMC is an in-kernel key-value cache implemented in BPF and proposed by paper [1]. The paper discussed BMC for memcached, obtaining at least 6x performance speedup. This patch implements a sample BMC for Redis. Paper [1] implements BMC in XDP, bypassing the kernel network stack totally. Since Redis is based on TCP protocol, and it's almost impossible to fully process TCP traffic in XDP, so this patch implements BMC in sockmap, which locates at the top of kernel network stack. Since kernel network stack is not bypassed, the speedup is not significant. Any way, this is only a sample implementation, and performance improvements can be continuously optimized. See [2] for details on how to build samples/bpf. Output files: samples/bpf/bmctool samples/bpf/bmc/bpf.o Sample usage: bmctool prog load -p 6379 ./bmc/bpf.o # load bmc bpf prog and attach it # to sockets with listen port 6379 bmctool stat # dump bmc status bmctool prog unload # detach and unload bmc prog [1] https://www.usenix.org/conference/nsdi21/presentation/ghigoff [2] https://www.kernel.org/doc/readme/samples-bpf-README.rst Xu Kuohai (3): bpf: Add helper bpf_tcp_udpate_seq to synchronize tcp seq/ack bpf: Add xdp load and store helpers samples: bpf: Add sample BMC for Redis include/uapi/linux/bpf.h | 27 ++ net/core/filter.c | 98 +++++ samples/bpf/Makefile | 3 + samples/bpf/bmc/bpf.c | 485 +++++++++++++++++++++ samples/bpf/bmc/common.h | 21 + samples/bpf/bmc/tool.c | 763 +++++++++++++++++++++++++++++++++ tools/include/uapi/linux/bpf.h | 27 ++ 7 files changed, 1424 insertions(+) create mode 100644 samples/bpf/bmc/bpf.c create mode 100644 samples/bpf/bmc/common.h create mode 100644 samples/bpf/bmc/tool.c -- 2.20.1

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[BUG] [openEuler-1.0-LTS] "CPU features: enabling workaround for Mismatched cache type"
by Zenghui Yu 30 Aug '22

30 Aug '22

I've seen the following kernel log when booting openEuler-1.0-LTS on my kunpeng-920: "CPU features: enabling workaround for Mismatched cache type" whilst all the CPUs in the system actually expose the *same* CTR_EL0 values, i.e., 0x0000000084448004. The following piece of code looks quite broken because ... |static bool |has_mismatched_cache_type(const struct arm64_cpu_capabilities *entry, | int scope) |{ | u64 mask = arm64_ftr_reg_ctrel0.strict_mask; | | /* Skip matching the min line sizes for cache type check */ | if (entry->capability == ARM64_MISMATCHED_CACHE_TYPE) | mask ^= arm64_ftr_reg_ctrel0.strict_mask; ... 'mask' is always set to 0 during the detection of "Mismatched cache type" but we actually want to check the whole *strict_mask*. If I understand it correctly, backporting upstream commit 880f7cc47265 ("arm64: cpu_errata: Remove ARM64_MISMATCHED_CACHE_LINE_SIZE") is the right thing to do here. But please have a look. Zenghui

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