- 21 Jan, 2022 6 commits
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Paolo Abeni authored
The MPTCP endpoint list is under RCU protection, guarded by the pernet spinlock. mptcp_nl_cmd_set_flags() traverses the list without acquiring the spin-lock nor under the RCU critical section. This change addresses the issue performing the lookup and the endpoint update under the pernet spinlock. Fixes: 0f9f696a ("mptcp: add set_flags command in PM netlink") Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfJakub Kicinski authored
Pablo Neira Ayuso says: ==================== Netfilter fixes for net 1) Incorrect helper module alias in netbios_ns, from Florian Westphal. 2) Remove unused variable in nf_tables. 3) Uninitialized last expression in nf_tables register tracking. 4) Memleak in nft_connlimit after moving stateful data out of the expression data area. 5) Bogus invalid stats update when NF_REPEAT is returned, from Florian. * git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf: netfilter: conntrack: don't increment invalid counter on NF_REPEAT netfilter: nft_connlimit: memleak if nf_ct_netns_get() fails netfilter: nf_tables: set last expression in register tracking area netfilter: nf_tables: remove unused variable netfilter: nf_conntrack_netbios_ns: fix helper module alias ==================== Link: https://lore.kernel.org/r/20220120125212.991271-1-pablo@netfilter.orgSigned-off-by:
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Eric Dumazet authored
struct fib6_node's fn_sernum field can be read while other threads change it. Add READ_ONCE()/WRITE_ONCE() annotations. Do not change existing smp barriers in fib6_get_cookie_safe() and __fib6_update_sernum_upto_root() syzbot reported: BUG: KCSAN: data-race in fib6_clean_node / inet6_csk_route_socket write to 0xffff88813df62e2c of 4 bytes by task 1920 on cpu 1: fib6_clean_node+0xc2/0x260 net/ipv6/ip6_fib.c:2178 fib6_walk_continue+0x38e/0x430 net/ipv6/ip6_fib.c:2112 fib6_walk net/ipv6/ip6_fib.c:2160 [inline] fib6_clean_tree net/ipv6/ip6_fib.c:2240 [inline] __fib6_clean_all+0x1a9/0x2e0 net/ipv6/ip6_fib.c:2256 fib6_flush_trees+0x6c/0x80 net/ipv6/ip6_fib.c:2281 rt_genid_bump_ipv6 include/net/net_namespace.h:488 [inline] addrconf_dad_completed+0x57f/0x870 net/ipv6/addrconf.c:4230 addrconf_dad_work+0x908/0x1170 process_one_work+0x3f6/0x960 kernel/workqueue.c:2307 worker_thread+0x616/0xa70 kernel/workqueue.c:2454 kthread+0x1bf/0x1e0 kernel/kthread.c:359 ret_from_fork+0x1f/0x30 read to 0xffff88813df62e2c of 4 bytes by task 15701 on cpu 0: fib6_get_cookie_safe include/net/ip6_fib.h:285 [inline] rt6_get_cookie include/net/ip6_fib.h:306 [inline] ip6_dst_store include/net/ip6_route.h:234 [inline] inet6_csk_route_socket+0x352/0x3c0 net/ipv6/inet6_connection_sock.c:109 inet6_csk_xmit+0x91/0x1e0 net/ipv6/inet6_connection_sock.c:121 __tcp_transmit_skb+0x1323/0x1840 net/ipv4/tcp_output.c:1402 tcp_transmit_skb net/ipv4/tcp_output.c:1420 [inline] tcp_write_xmit+0x1450/0x4460 net/ipv4/tcp_output.c:2680 __tcp_push_pending_frames+0x68/0x1c0 net/ipv4/tcp_output.c:2864 tcp_push+0x2d9/0x2f0 net/ipv4/tcp.c:725 mptcp_push_release net/mptcp/protocol.c:1491 [inline] __mptcp_push_pending+0x46c/0x490 net/mptcp/protocol.c:1578 mptcp_sendmsg+0x9ec/0xa50 net/mptcp/protocol.c:1764 inet6_sendmsg+0x5f/0x80 net/ipv6/af_inet6.c:643 sock_sendmsg_nosec net/socket.c:705 [inline] sock_sendmsg net/socket.c:725 [inline] kernel_sendmsg+0x97/0xd0 net/socket.c:745 sock_no_sendpage+0x84/0xb0 net/core/sock.c:3086 inet_sendpage+0x9d/0xc0 net/ipv4/af_inet.c:834 kernel_sendpage+0x187/0x200 net/socket.c:3492 sock_sendpage+0x5a/0x70 net/socket.c:1007 pipe_to_sendpage+0x128/0x160 fs/splice.c:364 splice_from_pipe_feed fs/splice.c:418 [inline] __splice_from_pipe+0x207/0x500 fs/splice.c:562 splice_from_pipe fs/splice.c:597 [inline] generic_splice_sendpage+0x94/0xd0 fs/splice.c:746 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x80/0xa0 fs/splice.c:936 splice_direct_to_actor+0x345/0x650 fs/splice.c:891 do_splice_direct+0x106/0x190 fs/splice.c:979 do_sendfile+0x675/0xc40 fs/read_write.c:1245 __do_sys_sendfile64 fs/read_write.c:1310 [inline] __se_sys_sendfile64 fs/read_write.c:1296 [inline] __x64_sys_sendfile64+0x102/0x140 fs/read_write.c:1296 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x0000026f -> 0x00000271 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15701 Comm: syz-executor.2 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 The Fixes tag I chose is probably arbitrary, I do not think we need to backport this patch to older kernels. Fixes: c5cff856 ("ipv6: add rcu grace period before freeing fib6_node") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Link: https://lore.kernel.org/r/20220120174112.1126644-1-eric.dumazet@gmail.comSigned-off-by:
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Eric Dumazet authored
Without it, splice users can hit the warning added in commit 79074a72 ("net: Flush deferred skb free on socket destroy") Fixes: f35f8219 ("tcp: defer skb freeing after socket lock is released") Fixes: 79074a72 ("net: Flush deferred skb free on socket destroy") Suggested-by:
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Gal Pressman authored
When compiling the kernel with CONFIG_INET disabled, the sk_defer_free_flush() should be defined as a nop. This resolves the following compilation error: ld: net/core/sock.o: in function `sk_defer_free_flush': ./include/net/tcp.h:1378: undefined reference to `__sk_defer_free_flush' Fixes: 79074a72 ("net: Flush deferred skb free on socket destroy") Reported-by:
kernel test robot <lkp@intel.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Signed-off-by:
Gal Pressman <gal@nvidia.com> Reviewed-by:
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Marek Behún authored
Commit bafbdd52 ("phylib: Add device reset GPIO support") added call to phy_device_reset(phydev) after the put_device() call in phy_detach(). The comment before the put_device() call says that the phydev might go away with put_device(). Fix potential use-after-free by calling phy_device_reset() before put_device(). Fixes: bafbdd52 ("phylib: Add device reset GPIO support") Signed-off-by:
Marek Behún <kabel@kernel.org> Reviewed-by:
Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20220119162748.32418-1-kabel@kernel.orgSigned-off-by:
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- 20 Jan, 2022 34 commits
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David S. Miller authored
Yuji Ishikawa says: ==================== net: stmmac: dwmac-visconti: Fix bit definitions and clock configuration for RMII mode This series is a fix for RMII/MII operation mode of the dwmac-visconti driver. It is composed of two parts: * 1/2: fix constant definitions for cleared bits in ETHER_CLK_SEL register * 2/2: fix configuration of ETHER_CLK_SEL register for running in RMII operation mode. net: stmmac: dwmac-visconti: Fix bit definitions for ETHER_CLK_SEL v1 -> v2: - added Fixes tag to commit message net: stmmac: dwmac-visconti: Fix clock configuration for RMII mode v1 -> v2: - added Fixes tag to commit message ==================== Signed-off-by:David S. Miller <davem@davemloft.net>
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Yuji Ishikawa authored
Bit pattern of the ETHER_CLOCK_SEL register for RMII/MII mode should be fixed. Also, some control bits should be modified with a specific sequence. Fixes: b38dd98f ("net: stmmac: Add Toshiba Visconti SoCs glue driver") Signed-off-by:
Yuji Ishikawa <yuji2.ishikawa@toshiba.co.jp> Reviewed-by:
Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp> Signed-off-by:
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Yuji Ishikawa authored
just 0 should be used to represent cleared bits * ETHER_CLK_SEL_DIV_SEL_20 * ETHER_CLK_SEL_TX_CLK_EXT_SEL_IN * ETHER_CLK_SEL_RX_CLK_EXT_SEL_IN * ETHER_CLK_SEL_TX_CLK_O_TX_I * ETHER_CLK_SEL_RMII_CLK_SEL_IN Fixes: b38dd98f ("net: stmmac: Add Toshiba Visconti SoCs glue driver") Signed-off-by:
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Ido Schimmel authored
The warning messages can be invoked from the data path for every packet transmitted through an ip6gre netdev, leading to high CPU utilization. Fix that by rate limiting the messages. Fixes: 09c6bbf0 ("[IPV6]: Do mandatory IPv6 tunnel endpoint checks in realtime") Reported-by:
Maksym Yaremchuk <maksymy@nvidia.com> Tested-by:
Ido Schimmel <idosch@nvidia.com> Reviewed-by:
Amit Cohen <amcohen@nvidia.com> Signed-off-by:
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Moshe Tal authored
The link extended sub-states are assigned as enum that is an integer size but read from a union as u8, this is working for small values on little endian systems but for big endian this always give 0. Fix the variable in the union to match the enum size. Fixes: ecc31c60 ("ethtool: Add link extended state") Signed-off-by:
Moshe Tal <moshet@nvidia.com> Reviewed-by:
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Robert Hancock authored
A problem was encountered with the Bel-Fuse 1GBT-SFP05 SFP module (which is a 1 Gbps copper module operating in SGMII mode with an internal BCM54616S PHY device) using the Xilinx AXI Ethernet MAC core, where the module would work properly on the initial insertion or boot of the device, but after the device was rebooted, the link would either only come up at 100 Mbps speeds or go up and down erratically. I found no meaningful changes in the PHY configuration registers between the working and non-working boots, but the status registers seemed to have a lot of error indications set on the SERDES side of the device on the non-working boot. I suspect the problem is that whatever happens on the SGMII link when the device is rebooted and the FPGA logic gets reloaded ends up putting the module's onboard PHY into a bad state. Since commit 6e2d85ec ("net: phy: Stop with excessive soft reset") the genphy_soft_reset call is not made automatically by the PHY core unless the callback is explicitly specified in the driver structure. For most of these Broadcom devices, there is probably a hardware reset that gets asserted to reset the PHY during boot, however for SFP modules (where the BCM54616S is commonly found) no such reset line exists, so if the board keeps the SFP cage powered up across a reboot, it will end up with no reset occurring during reboots. Hook up the genphy_soft_reset callback for BCM54616S to ensure that a PHY reset is performed before the device is initialized. This appears to fix the issue with erratic operation after a reboot with this SFP module. Fixes: 6e2d85ec ("net: phy: Stop with excessive soft reset") Signed-off-by:
Robert Hancock <robert.hancock@calian.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Victor Nogueira authored
When adding a tc rule with a qdisc kind that is not supported or not compiled into the kernel, the kernel emits the following error: "Error: Specified qdisc not found.". Found via tdc testing when ETS qdisc was not compiled in and it was not obvious right away what the message meant without looking at the kernel code. Change the error message to be more explicit and say the qdisc kind is unknown. Signed-off-by:
Victor Nogueira <victor@mojatatu.com> Signed-off-by:
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Congyu Liu authored
In one net namespace, after creating a packet socket without binding it to a device, users in other net namespaces can observe the new `packet_type` added by this packet socket by reading `/proc/net/ptype` file. This is minor information leakage as packet socket is namespace aware. Add a net pointer in `packet_type` to keep the net namespace of of corresponding packet socket. In `ptype_seq_show`, this net pointer must be checked when it is not NULL. Fixes: 2feb27db ("[NETNS]: Minor information leak via /proc/net/ptype file.") Signed-off-by:
Congyu Liu <liu3101@purdue.edu> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from Jakub Kicinski: "Including fixes from netfilter, bpf. Quite a handful of old regression fixes but most of those are pre-5.16. Current release - regressions: - fix memory leaks in the skb free deferral scheme if upper layer protocols are used, i.e. in-kernel TCP readers like TLS Current release - new code bugs: - nf_tables: fix NULL check typo in _clone() functions - change the default to y for Vertexcom vendor Kconfig - a couple of fixes to incorrect uses of ref tracking - two fixes for constifying netdev->dev_addr Previous releases - regressions: - bpf: - various verifier fixes mainly around register offset handling when passed to helper functions - fix mount source displayed for bpffs (none -> bpffs) - bonding: - fix extraction of ports for connection hash calculation - fix bond_xmit_broadcast return value when some devices are down - phy: marvell: add Marvell specific PHY loopback - sch_api: don't skip qdisc attach on ingress, prevent ref leak - htb: restore minimal packet size handling in rate control - sfp: fix high power modules without diagnostic monitoring - mscc: ocelot: - don't let phylink re-enable TX PAUSE on the NPI port - don't dereference NULL pointers with shared tc filters - smsc95xx: correct reset handling for LAN9514 - cpsw: avoid alignment faults by taking NET_IP_ALIGN into account - phy: micrel: use kszphy_suspend/_resume for irq aware devices, avoid races with the interrupt Previous releases - always broken: - xdp: check prog type before updating BPF link - smc: resolve various races around abnormal connection termination - sit: allow encapsulated IPv6 traffic to be delivered locally - axienet: fix init/reset handling, add missing barriers, read the right status words, stop queues correctly - add missing dev_put() in sock_timestamping_bind_phc() Misc: - ipv4: prevent accidentally passing RTO_ONLINK to ip_route_output_key_hash() by sanitizing flags - ipv4: avoid quadratic behavior in netns dismantle - stmmac: dwmac-oxnas: add support for OX810SE - fsl: xgmac_mdio: add workaround for erratum A-009885" * tag 'net-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (92 commits) ipv4: add net_hash_mix() dispersion to fib_info_laddrhash keys ipv4: avoid quadratic behavior in netns dismantle net/fsl: xgmac_mdio: Fix incorrect iounmap when removing module powerpc/fsl/dts: Enable WA for erratum A-009885 on fman3l MDIO buses dt-bindings: net: Document fsl,erratum-a009885 net/fsl: xgmac_mdio: Add workaround for erratum A-009885 net: mscc: ocelot: fix using match before it is set net: phy: micrel: use kszphy_suspend()/kszphy_resume for irq aware devices net: cpsw: avoid alignment faults by taking NET_IP_ALIGN into account nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind() net: axienet: increase default TX ring size to 128 net: axienet: fix for TX busy handling net: axienet: fix number of TX ring slots for available check net: axienet: Fix TX ring slot available check net: axienet: limit minimum TX ring size net: axienet: add missing memory barriers net: axienet: reset core on initialization prior to MDIO access net: axienet: Wait for PhyRstCmplt after core reset net: axienet: increase reset timeout bpf, selftests: Add ringbuf memory type confusion test ... -
Linus Torvalds authored
Merge more updates from Andrew Morton: "55 patches. Subsystems affected by this patch series: percpu, procfs, sysctl, misc, core-kernel, get_maintainer, lib, checkpatch, binfmt, nilfs2, hfs, fat, adfs, panic, delayacct, kconfig, kcov, and ubsan" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (55 commits) lib: remove redundant assignment to variable ret ubsan: remove CONFIG_UBSAN_OBJECT_SIZE kcov: fix generic Kconfig dependencies if ARCH_WANTS_NO_INSTR lib/Kconfig.debug: make TEST_KMOD depend on PAGE_SIZE_LESS_THAN_256KB btrfs: use generic Kconfig option for 256kB page size limit arch/Kconfig: split PAGE_SIZE_LESS_THAN_256KB from PAGE_SIZE_LESS_THAN_64KB configs: introduce debug.config for CI-like setup delayacct: track delays from memory compact Documentation/accounting/delay-accounting.rst: add thrashing page cache and direct compact delayacct: cleanup flags in struct task_delay_info and functions use it delayacct: fix incomplete disable operation when switch enable to disable delayacct: support swapin delay accounting for swapping without blkio panic: remove oops_id panic: use error_report_end tracepoint on warnings fs/adfs: remove unneeded variable make code cleaner FAT: use io_schedule_timeout() instead of congestion_wait() hfsplus: use struct_group_attr() for memcpy() region nilfs2: remove redundant pointer sbufs fs/binfmt_elf: use PT_LOAD p_align values for static PIE const_structs.checkpatch: add frequently used ops structs ...
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Colin Ian King authored
The variable ret is being assigned a value that is never read. If the for-loop is entered then ret is immediately re-assigned a new value. If the for-loop is not executed ret is never read. The assignment is redundant and can be removed. Link: https://lkml.kernel.org/r/20211230134557.83633-1-colin.i.king@gmail.comSigned-off-by:
Colin Ian King <colin.i.king@gmail.com> Reviewed-by:
Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Kees Cook authored
The object-size sanitizer is redundant to -Warray-bounds, and inappropriately performs its checks at run-time when all information needed for the evaluation is available at compile-time, making it quite difficult to use: https://bugzilla.kernel.org/show_bug.cgi?id=214861 With -Warray-bounds almost enabled globally, it doesn't make sense to keep this around. Link: https://lkml.kernel.org/r/20211203235346.110809-1-keescook@chromium.orgSigned-off-by:
Kees Cook <keescook@chromium.org> Reviewed-by:
Marco Elver <elver@google.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Michal Marek <michal.lkml@markovi.net> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Marco Elver authored
Until recent versions of GCC and Clang, it was not possible to disable KCOV instrumentation via a function attribute. The relevant function attribute was introduced in 540540d0 ("kcov: add __no_sanitize_coverage to fix noinstr for all architectures"). x86 was the first architecture to want a working noinstr, and at the time no compiler support for the attribute existed yet. Therefore, commit 0f1441b4 ("objtool: Fix noinstr vs KCOV") introduced the ability to NOP __sanitizer_cov_*() calls in .noinstr.text. However, this doesn't work for other architectures like arm64 and s390 that want a working noinstr per ARCH_WANTS_NO_INSTR. At the time of 0f1441b4, we didn't yet have ARCH_WANTS_NO_INSTR, but now we can move the Kconfig dependency checks to the generic KCOV option. KCOV will be available if: - architecture does not care about noinstr, OR - we have objtool support (like on x86), OR - GCC is 12.0 or newer, OR - Clang is 13.0 or newer. Link: https://lkml.kernel.org/r/20211201152604.3984495-1-elver@google.comSigned-off-by:
Nathan Chancellor <nathan@kernel.org> Acked-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by:
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Nathan Chancellor authored
Commit b05fbcc3 ("btrfs: disable build on platforms having page size 256K") disabled btrfs for configurations that used a 256kB page size. However, it did not fully solve the problem because CONFIG_TEST_KMOD selects CONFIG_BTRFS, which does not account for the dependency. This results in a Kconfig warning and the failed BUILD_BUG_ON error returning. WARNING: unmet direct dependencies detected for BTRFS_FS Depends on [n]: BLOCK [=y] && !PPC_256K_PAGES && !PAGE_SIZE_256KB [=y] Selected by [m]: - TEST_KMOD [=m] && RUNTIME_TESTING_MENU [=y] && m && MODULES [=y] && NETDEVICES [=y] && NET_CORE [=y] && INET [=y] && BLOCK [=y] To resolve this, add CONFIG_PAGE_SIZE_LESS_THAN_256KB as a dependency of CONFIG_TEST_KMOD so there is no more invalid configuration or build errors. Link: https://lkml.kernel.org/r/20211129230141.228085-4-nathan@kernel.org Fixes: b05fbcc3 ("btrfs: disable build on platforms having page size 256K") Signed-off-by:
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Nathan Chancellor authored
Use the newly introduced CONFIG_PAGE_SIZE_LESS_THAN_256KB to describe the dependency introduced by commit b05fbcc3 ("btrfs: disable build on platforms having page size 256K"). Link: https://lkml.kernel.org/r/20211129230141.228085-3-nathan@kernel.orgSigned-off-by:
David Sterba <dsterba@suse.com> Cc: Chris Mason <clm@fb.com> Cc: Josef Bacik <josef@toxicpanda.com> Cc: kernel test robot <lkp@intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
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Nathan Chancellor authored
Patch series "Fix CONFIG_TEST_KMOD with 256kB page size". The kernel test robot reported a build error [1] from a failed assertion in fs/btrfs/inode.c with a hexagon randconfig that includes CONFIG_PAGE_SIZE_256KB. This error is the same one that was addressed by commit b05fbcc3 ("btrfs: disable build on platforms having page size 256K") but CONFIG_TEST_KMOD selects CONFIG_BTRFS without having the "page size less than 256kB dependency", which results in the error reappearing. The first patch introduces CONFIG_PAGE_SIZE_LESS_THAN_256KB by splitting it off from CONFIG_PAGE_SIZE_LESS_THAN_64KB, which was introduced in commit 1f0e290c ("arch: Add generic Kconfig option indicating page size smaller than 64k") for a similar reason in 5.16-rc3. The second patch uses that configuration option for CONFIG_BTRFS to reduce duplication. The third patch resolves the build error by adding CONFIG_PAGE_SIZE_LESS_THAN_256KB as a dependency to CONFIG_TEST_KMOD so that CONFIG_BTRFS does not get enabled under that invalid configuration. [1]: https://lore.kernel.org/r/202111270255.UYOoN5VN-lkp@intel.com/ This patch (of 3): btrfs requires a page size smaller than 256kB. To use that dependency in other places, introduce CONFIG_PAGE_SIZE_LESS_THAN_256KB and reuse that dependency in CONFIG_PAGE_SIZE_LESS_THAN_64KB. Link: https://lkml.kernel.org/r/20211129230141.228085-1-nathan@kernel.org Link: https://lkml.kernel.org/r/20211129230141.228085-2-nathan@kernel.orgSigned-off-by:
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Qian Cai authored
Some general debugging features like kmemleak, KASAN, lockdep, UBSAN etc help fix many viruses like a microscope. On the other hand, those features are scatter around and mixed up with more situational debugging options making them difficult to consume properly. This cold help amplify the general debugging/testing efforts and help establish sensitive default values for those options across the broad. This could also help different distros to collaborate on maintaining debug-flavored kernels. The config is based on years' experiences running daily CI inside the largest enterprise Linux distro company to seek regressions on linux-next builds on different bare-metal and virtual platforms. It can be used for example, $ make ARCH=arm64 defconfig debug.config Since KASAN and KCSAN can't be enabled together, we will need to create a separate one for KCSAN later as well. Link: https://lkml.kernel.org/r/20211115134754.7334-1-quic_qiancai@quicinc.comSigned-off-by:
Qian Cai <quic_qiancai@quicinc.com> Acked-by:
Paul E. McKenney <paulmck@kernel.org> Cc: Marco Elver <elver@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Naresh Kamboju <naresh.kamboju@linaro.org> Cc: "Stephen Rothwell" <sfr@canb.auug.org.au> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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wangyong authored
Delay accounting does not track the delay of memory compact. When there is not enough free memory, tasks can spend a amount of their time waiting for compact. To get the impact of tasks in direct memory compact, measure the delay when allocating memory through memory compact. Also update tools/accounting/getdelays.c: / # ./getdelays_next -di -p 304 print delayacct stats ON printing IO accounting PID 304 CPU count real total virtual total delay total delay average 277 780000000 849039485 18877296 0.068ms IO count delay total delay average 0 0 0ms SWAP count delay total delay average 0 0 0ms RECLAIM count delay total delay average 5 11088812685 2217ms THRASHING count delay total delay average 0 0 0ms COMPACT count delay total delay average 3 72758 0ms watch: read=0, write=0, cancelled_write=0 Link: https://lkml.kernel.org/r/1638619795-71451-1-git-send-email-wang.yong12@zte.com.cnSigned-off-by:wangyong <wang.yong12@zte.com.cn> Reviewed-by:
Jiang Xuexin <jiang.xuexin@zte.com.cn> Reviewed-by:
Zhang Wenya <zhang.wenya1@zte.com.cn> Reviewed-by:
Yang Yang <yang.yang29@zte.com.cn> Reviewed-by:
Balbir Singh <bsingharora@gmail.com> Signed-off-by:
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wangyong authored
Add thrashing page cache and direct compact related descriptions and update the usage of getdelays userspace utility. The following patches modifications have been updated: https://lore.kernel.org/all/20190312102002.31737-4-jinpuwang@gmail.com/ https://lore.kernel.org/all/1638619795-71451-1-git-send-email- wang.yong12@zte.com.cn/ Link: https://lkml.kernel.org/r/1639583021-92977-1-git-send-email-wang.yong12@zte.com.cnSigned-off-by:
Zeal Robot <zealci@zte.com.cn> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Yang Yang authored
Flags in struct task_delay_info is used to distinguish the difference between swapin and blkio delay acountings. But after patch "delayacct: support swapin delay accounting for swapping without blkio", there is no need to do that since swapin and blkio delay accounting use their own functions. Link: https://lkml.kernel.org/r/20211124065958.36703-1-yang.yang29@zte.com.cnSigned-off-by:
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Yang Yang authored
When a task is created after delayacct is enabled, kernel will do all the delay accountings for that task. The problems is if user disables delayacct by set /proc/sys/kernel/task_delayacct to zero, only blkio delay accounting is disabled. Now disable all the kinds of delay accountings when /proc/sys/kernel/task_delayacct sets to zero. Link: https://lkml.kernel.org/r/20211123140342.32962-1-ran.xiaokai@zte.com.cnSigned-off-by:
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Yang Yang authored
Currently delayacct accounts swapin delay only for swapping that cause blkio. If we use zram for swapping, tools/accounting/getdelays can't get any SWAP delay. It's useful to get zram swapin delay information, for example to adjust compress algorithm or /proc/sys/vm/swappiness. Reference to PSI, it accounts any kind of swapping by doing its work in swap_readpage(), no matter whether swapping causes blkio. Let delayacct do the similar work. Link: https://lkml.kernel.org/r/20211112083813.8559-1-yang.yang29@zte.com.cnSigned-off-by:
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Sebastian Andrzej Siewior authored
The oops id has been added as part of the end of trace marker for the kerneloops.org project. The id is used to automatically identify duplicate submissions of the same report. Identical looking reports with different a id can be considered as the same oops occurred again. The early initialisation of the oops_id can create a warning if the random core is not yet fully initialized. On PREEMPT_RT it is problematic if the id is initialized on demand from non preemptible context. The kernel oops project is not available since 2017. Remove the oops_id and use 0 in the output in case parser rely on it. Link: https://bugs.debian.org/953172 Link: https://lkml.kernel.org/r/Ybdi16aP2NEugWHq@linutronix.deSigned-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by:
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Marco Elver authored
Introduce the error detector "warning" to the error_report event and use the error_report_end tracepoint at the end of a warning report. This allows in-kernel tests but also userspace to more easily determine if a warning occurred without polling kernel logs. [akpm@linux-foundation.org: add comma to enum list, per Andy] Link: https://lkml.kernel.org/r/20211115085630.1756817-1-elver@google.comSigned-off-by:
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Minghao Chi authored
Return value directly instead of taking this in a variable. Link: https://lkml.kernel.org/r/20211210023211.424609-1-chi.minghao@zte.com.cnSigned-off-by:
Minghao Chi <chi.minghao@zte.com.cn> Reported-by:
Zeal Robot <zealci@zte.com.cm> Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Jan Kara <jack@suse.cz> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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NeilBrown authored
congestion_wait() in this context is just a sleep - block devices do not support congestion signalling any more. The goal for this wait, which was introduced in commit ae78bf9c ("[PATCH] add -o flush for fat") is to wait for any recently written data to get to storage. We currently have no direct mechanism to do this, so a simple wait that behaves identically to the current congestion_wait() is the best we can do. This is a step towards removing congestion_wait() Link: https://lkml.kernel.org/r/163936544519.22433.13400436295732112065@noble.neil.brown.nameSigned-off-by:
NeilBrown <neilb@suse.de> Acked-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
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Kees Cook authored
In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memset(), avoid intentionally writing across neighboring fields. Add struct_group() to mark the "info" region (containing struct DInfo and struct DXInfo structs) in struct hfsplus_cat_folder and struct hfsplus_cat_file that are written into directly, so the compiler can correctly reason about the expected size of the writes. "pahole" shows no size nor member offset changes to struct hfsplus_cat_folder nor struct hfsplus_cat_file. "objdump -d" shows no object code changes. Link: https://lkml.kernel.org/r/20211119192851.1046717-1-keescook@chromium.orgSigned-off-by:
Christian Brauner <christian.brauner@ubuntu.com> Cc: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by:
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Colin Ian King authored
Pointer sbufs is being assigned a value but it's not being used later on. The pointer is redundant and can be removed. Cleans up scan-build static analysis warning: fs/nilfs2/page.c:203:8: warning: Although the value stored to 'sbufs' is used in the enclosing expression, the value is never actually read from 'sbufs' [deadcode.DeadStores] sbh = sbufs = page_buffers(src); Link: https://lkml.kernel.org/r/20211211180955.550380-1-colin.i.king@gmail.com Link: https://lkml.kernel.org/r/1640712476-15136-1-git-send-email-konishi.ryusuke@gmail.comSigned-off-by:Ryusuke Konishi <konishi.ryusuke@gmail.com> Signed-off-by:
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H.J. Lu authored
Extend commit ce81bb25 ("fs/binfmt_elf: use PT_LOAD p_align values for suitable start address") which fixed PIE binaries built with -Wl,-z,max-page-size=0x200000, to cover static PIE binaries. This fixes: https://bugzilla.kernel.org/show_bug.cgi?id=215275 Tested by verifying static PIE binaries with -Wl,-z,max-page-size=0x200000 loading. Link: https://lkml.kernel.org/r/20211209174052.370537-1-hjl.tools@gmail.comSigned-off-by:
H.J. Lu <hjl.tools@gmail.com> Cc: Chris Kennelly <ckennelly@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Song Liu <songliubraving@fb.com> Cc: David Rientjes <rientjes@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Sandeep Patil <sspatil@google.com> Cc: Fangrui Song <maskray@google.com> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by:
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Rikard Falkeborn authored
Add commonly used structs (>50 instances) which are always or almost always const. Link: https://lkml.kernel.org/r/20211127101134.33101-1-rikard.falkeborn@gmail.comSigned-off-by:
Rikard Falkeborn <rikard.falkeborn@gmail.com> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Joe Perches authored
The Kconfig help test erroneously counts patch context lines as part of the help text. Fix that and improve the message block output. Link: https://lkml.kernel.org/r/06c0cdc157ae1502e8e9eb3624b9ea995cf11e7a.camel@perches.comSigned-off-by:
Joe Perches <joe@perches.com> Tested-by:
Randy Dunlap <rdunlap@infradead.org> Acked-by:
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Jerome Forissier authored
One exceptions to the COMMIT_LOG_LONG_LINE rule is a file path followed by ':'. That is typically some sort diagnostic message from a compiler or a build tool, in which case we don't want to wrap the lines but keep the message unmodified. The regular expression used to match this pattern currently doesn't accept absolute paths or + characters. This can result in false positives as in the following (out-of-tree) example: ... /home/jerome/work/optee_repo_qemu/build/../toolchains/aarch32/bin/arm-linux-gnueabihf-ld.bfd: /home/jerome/work/toolchains-gcc10.2/aarch32/bin/../lib/gcc/arm-none-linux-gnueabihf/10.2.1/../../../../arm-none-linux-gnueabihf/lib/libstdc++.a(eh_alloc.o): in function `__cxa_allocate_exception': /tmp/dgboter/bbs/build03--cen7x86_64/buildbot/cen7x86_64--arm-none-linux-gnueabihf/build/src/gcc/libstdc++-v3/libsupc++/eh_alloc.cc:284: undefined reference to `malloc' ... Update the regular expression to match the above paths. Link: https://lkml.kernel.org/r/20210923143842.2837983-1-jerome@forissier.orgSigned-off-by:
Jerome Forissier <jerome@forissier.org> Acked-by:
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Andrey Konovalov authored
Make do_kmem_cache_size_bulk() destroy the cache it creates. Link: https://lkml.kernel.org/r/aced20a94bf04159a139f0846e41d38a1537debb.1640018297.git.andreyknvl@google.com Fixes: 03a9349a ("lib/test_meminit: add a kmem_cache_alloc_bulk() test") Signed-off-by:
Andrey Konovalov <andreyknvl@google.com> Reviewed-by:
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Andy Shevchenko authored
Remove licence boilerplate text from the UAPI header. Link: https://lkml.kernel.org/r/20211216113552.81199-2-andriy.shevchenko@linux.intel.comSigned-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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